ProSens with
PSP, PSM and PSR
modules
ProSens with
PSP, PSM and PSR
modules
Opsens inc
2014 Cyrille-Duquet, Suite 125
Québec, QC
G1N 4N6, Canada
Tel. : +418-682-9996
Fax: +418-682-9939
[email protected]
www.opsens.com
© Opsens Inc.
IMP0041 ProSens with PSP, PSM, PSR modules rev1.1.doc
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© Opsens Inc.
IMP0041 ProSens with PSP, PSM, PSR modules rev1.1.doc
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WARRANTY
All signal conditioner manufactured by Opsens inc. are warranted to be free of defects in
workmanship and materials for a period of one year from the date of shipment. No other
express warranty is given, and no affirmation of Seller, by words or actions, shall
constitute a warranty. SELLER DISCLAIMS ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSES
WHATSOEVER. If any defect in workmanship or material should develop under
conditions of normal use and service within the warranty period, repairs will be made at
no charge to the original purchaser, upon delivery of the product(s) to the factory,
shipping charges prepaid. If inspection by Opsens or its authorized representative
reveals that the product was damaged by accident, alteration, misuse, abuse, faulty
installation or other causes beyond the control of Opsens, this warranty does not apply.
Service, repairs or disassembly of the product in any manner, performed without specific
factory permission, voids this warranty.
OPSENS MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MANUAL,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Opsens shall
not be liable for errors contained herein or for incidental or consequential damages in
connection with the furnishing, performance, or use of this material.
This warranty does not apply to the transducers sold for use with Opsens’ signal
conditioners.
IMPORTANT NOTICE
The product specifications and other information contained in this manual are subject to
change without notice.
Opsens has made a concerted effort to provide complete and current information for the
proper use of the equipment. If there are questions regarding this manual or the proper
use of the equipment, contact Opsens inc at:
TEL
FAX
+ 418-682-9996
+ 418-682-9939
WEB SITE
E-MAIL
www.opsens.com
[email protected]
PACKAGING FOR SHIPMENT
If the product must be shipped to a different location or returned to Opsens for any
reason through a common carrier it must be properly packaged to minimize risks of
damage.
SOFTWARE LICENSE AGREEMENT
This product contains intellectual property, i.e. software programs, that are licensed for
use by the end user/customer (hereinafter “end user”).
This is not a sale of such intellectual property.
The end user shall not copy, disassemble or reverse compile the software program.
The software programs are provided to the end user “as is” without warranty of any kind,
either express or implied, including, but not limited to, warranties of merchantability and
fitness for a particular purpose. The entire risk of the quality and performance of the
software program is with the end user.
© Opsens Inc.
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WARNINGS
WARNING: HIGH PRESSURE!
High pressure gases and liquids are potentially hazardous. Energy
stored in these gases or liquids can be released suddenly and with
extreme force. High pressure systems should be assembled and
operated only by personnel who have been trained in proper safety
practices.
WARNING : HIGH STRAIN!
Highly strained materials and parts are potentially hazardous. Energy
stored in these materials or parts can be released suddenly and with
extreme force. Highly strained systems should be assembled and
operated only by personnel who have been trained in proper safety
practices.
WARNING: NOT EXPLOSION PROOF!
Installation of this instrument in an area requiring devices rated as
intrinsically safe is not recommended.
WARNING: VOLTAGE SUPPLY!
Use only the wall plug-in power supply delivered with your PicoSens and
verifies that the input voltage and frequency are compatible with the
power outlet.
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Table of content
Table of content ................................................................................................................ 5
1.
Instrument overview ............................................................................................. 7
2.
Installation ............................................................................................................. 8
2.1
2.2
Power Connection ............................................................................................................................................... 8
Cooling and installation ...................................................................................................................................... 8
3.
4.
5.
Sensor connection................................................................................................ 9
Quick Start Guide................................................................................................ 11
PSP, PSR and PSM modules ............................................................................. 12
5.1
5.2
5.3
PSP module description ................................................................................................................................... 12
PSM module description................................................................................................................................... 12
PSR module description ................................................................................................................................... 12
6.
Instrument setup................................................................................................. 13
6.1
6.1.1
6.1.2
6.2
6.2.1
6.2.2
General menu: communication and local time setup .................................................................................... 13
Client/server network ........................................................................................................................................... 13
Peer-to-Peer network........................................................................................................................................... 14
Configure menu: instrument and sensor configuration ................................................................................ 15
System submenu ................................................................................................................................................. 15
Sensor submenu (module specific) ..................................................................................................................... 15
6.2.2.1
PSP module (list of sensors available)................................................. 16
6.2.4
6.2.5
6.3
6.3.1
6.3.2
6.3.3
6.4
6.4.1
6.4.2
6.4.3
6.2.2.2
PSM module (list of sensors available).......................................................................................... 17
6.2.2.3
PSR module (list of sensors available) .......................................................................................... 17
6.2.2.4
Sensor list: adding, copying, modifying and deleting sensors ....................................................... 17
Channel submenu................................................................................................................................................ 18
6.2.3.1
Enabling/disabling modules ........................................................................................................... 18
6.2.3.2
Sensor assignment ........................................................................................................................ 19
6.2.3.3
Diagnostic (module specific) .......................................................................................................... 20
6.2.3.3.1
PSP and PSM Modules Diagnostic ......................................................................................... 20
6.2.3.3.2
PSR Module Diagnostic .......................................................................................................... 22
6.2.3.4
Channel configuration: digital noise reduction filters...................................................................... 23
6.2.3.5
Channel configuration: zeroing and offsetting................................................................................ 25
6.2.3.6
Channel configuration: analog output settings............................................................................... 26
6.2.3.7
Channel configuration: Config All................................................................................................... 27
Slot submenu....................................................................................................................................................... 27
I-source submenu (optional) ................................................................................................................................ 28
Measure menu.................................................................................................................................................... 29
Numeric submenu................................................................................................................................................ 29
Line Graph ........................................................................................................................................................... 30
Bar Graph ............................................................................................................................................................ 33
Memory menu .................................................................................................................................................... 35
Select Folder dialog ............................................................................................................................................. 37
File data acquisition ............................................................................................................................................. 37
Data acquisition file structure .............................................................................................................................. 39
7.
Remote operation and data acquisition ........................................................... 42
7.1
Remote and Local modes ................................................................................................................................. 42
6.2.3
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© Opsens Inc.
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1. Instrument overview
The ProSens instrument is a fiber optic signal conditioner based on Opsens’
interferometric (WPLI) fiber optic technology and/or GaAs (SCBG) fiber optic technology.
It is composed of the ProSens chassis including an on-board computer and touchscreen display for real time data acquisition and transfer and mix combination of PSP,
PSM and PSR plug-in measurement modules. Each module has one measuring channel
and one analog output. Up to eight modules can be plug into the ProSens chassis. The
data output rate of each module is adjustable from 100 to 1000 Hz. Data measurements
of all plugged modules can be simultaneously retrieved at the Ethernet 10/100 Base-T
interface located at the rear panel of the chassis or on the analog output interface of
each of the modules.
Optical Plug-In Module
FRONT PANEL
Green LED Indicator
Red LED Indicator
Analog Output BNC Connector
Fiber Optic Connector
Color TFT touch-screen display
Ethernet/LAN (RJ45)
REAR PANEL
Cooling fan axhaust
Power Switch
Fuse Compartment
(Slow blow fuses 250V – 2A, 5 x 20 mm)
Power Connector
Reserved for internal and future use
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2. Installation
2.1 Power Connection
The ProSens instrument is configured for line voltages of 85 to 265 VAC at line
frequency of 47 Hz to 66 Hz. The power rating is 100 W nominal (for eight modules).
Verify that the line operating voltage in your area is conforming to the above
specifications. Before plugging in the power cord, make sure that the power switch is in
the off (0) position. Connect the female end of the supplied power cord to the power
connector on the rear panel. Connect the other end of the power cord to a grounded AC
outlet
CAUTION:
Operating the instrument on an incorrect line voltage or frequency
may cause damage to the instrument, possibly voiding the warranty.
WARNING:
The power cord supplied with the ProSens contains a separate
ground wire for use with grounded outlets. When proper
connections are made, instrument chassis is connected to power
line ground through the ground wire in the power cord. Failure to
use grounded outlet may result in personal injury or death due to
electrical shock.
Turn on the instrument by pressing the rear panel power switch to the on (1) position. At
power on, the green LED indicator of each module turns ON (unless the module has
been disabled by the user; see section 6.2.3.1). The red LED indicator turns ON only if
there is no sensor connected to the module or in case of module malfunction. In the later
unlikely case, contact factory.
2.2 Cooling and installation
The ProSens is cooled by forced convection. An exhaust fan located on the rear allows
ambient air to flow inside the casing of the instrument. The ambient air is draw inside
the casing through the ventilation louvers located on the top cover (near the front).
CAUTION:
The ProSens casing must be installed in area where ambient
temperature does not exceed 50°C. Enough space must be allowed
for exhaust fan and ventilation louvers so they are not obstructed
and sufficient ventilation is provided. Operating the instrument with
improper cooling may cause damage to the instrument, possibly
voiding the warranty
© Opsens Inc.
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3. Sensor connection
Opsens fiber-optic sensors or transducers must me mated to the ProSens output
connectors (Figures below). The optical connectors provided with the ProSens are
usually a square push-pull SC-type mating. Remove the protective cap of the mating,
engage the sensor connector with the orientation key properly oriented and push until it
clicks into its place. Always clean the sensor connector prior to connect it to the signal
conditioner with the included connector cleaner. Use a fresh section of cleaning cloth
every time.
NOTE: Always clean the connector ferrule endface with the include connector
cleaner before each connection. Failure to do so will result in permanent
damage to the connector caused by hard particles trapped between the
fiber optic endfaces.
NOTE: Always replace the protective dust cap on the mating when there is no
sensor connected and always replace the protective dust cap on the
sensor fiber-optic connector when not in used.
Figure 1 :
Figure 2 :
Remove the protective cap before connecting
Always clean the end of the connector ferrule before each
connection
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Figure 3 :
Engage the sensor connector with the orientation key properly
oriented and push until it clicks into place To disconnect, grab the square
connector body and just pull
Ask for Opsens Fiber-Optic Cleaning Guide for further information on how to clean fiberoptic connectors. As a reminder, Opsens provides you the good practice rules for
handling and using fiber optic sensors:
9 Keep the fiber optic connector surface clean – adopt the habit of cleaning
the connector at each use.
9 When the sensor is not in use, always put a protective cap over the
connector.
9 Avoid dropping the connector or scraping it on hard surfaces.
9 Avoid sharp bending radius in the fiber-optic cable (radius less than
10mm).
9 Avoid tension or twisting of the fiber-optic cable.
9 Avoid pinch points and “scissors” when setting in place the sensor.
9 Avoid pulling on the fiber optic cable to clear tangles; carefully untwine it
instead.
9 When spooling the fiber optic cable, verify that the tie wraps or other sort
of ties remain loose.
9 When installing the sensor, avoid bending or shear force on the probe tip.
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4. Quick Start Guide
Step 1: Sensor with Gage Factors must be defined and saved into internal ProSens
memory (Sensor submenu (module specific)).
Step 2: Module must be associated with one sensor defined into the ProSens (Sensor
assignment).
Step 3: Sensor must be initialized (select appropriate filtering method and parameters
(Channel configuration: digital noise reduction filters), nulling sensor when
required (Channel configuration: zeroing and offsetting), adjusting voltage output
is needed (Channel configuration: analog output settings)
Step 4: System is ready to measure (Measure menu)
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5. PSP, PSR and PSM modules
The ProSens can be populated with up to 8 modules of either the same type or of
different types of modules. Although most functionalities and menus related to each
module are similar, there are some differences. Instructions described in section 5 that
are module specific are highlighted as follow (module specific). Since the ProSens
automatically recognizes which module is inserted into each slot, menus are
automatically adapted to each module.
5.1 PSP module description
The PSP module is an interferometric module compatible with all WLPI sensors
available from Opsens. Opsens can provide a wide variety of WLPI sensors for
measuring temperature, pressure, strain and displacement. The PSP module is then a
multi parameter module.
Because WLPI sensors mated to the PSP can measure a variety of parameters, the user
must instruct the system of which type of sensor is connected, as well as sensor specific
calibration as provided by Opsens and attached nearby the sensor connector. This task
is achieved by the user by entering the gage factor specific to the sensor being used.
5.2 PSM module description
The PSM module is an interferometric module compatible with some specific sensors,
but mainly with the medical pressure sensors (OTP-M). This module is a variation of the
PSP module, where 1) the range of measurements was reduced to accommodate the
medical limited range of pressure; 2) the power consumption is decreased and lamp life
expectancy is increased; and 3) the system comes with an internal manometer for
correcting against atmospheric pressure variation. The PSM used along with an OTP-M
sensor then output a pressure relative to atmospheric pressure.
The user must instruct the system of which type of sensor is connected, as well as
sensor specific calibration provided by Opsens and attached nearby the sensor
connector. This task is achieved by the user by entering the gage factor specific to the
sensor being used.
5.3 PSR module description
The PSR module is a spectrophotometric (GaAs) module compatible with GaAs OTG-R
sensors available at Opsens. This module along with the OTG-R sensors does not
require any calibration factors since all sensors exhibit the same optical behaviour. This
module is well adapted for high speed temperature measurements such as for HERO
(EED) applications.
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6. Instrument setup
After the instrument has booted, the screen presents a mostly grey display. At the left is
the main menu bar showing the different options for configuring the instrument, the
sensors and the measurements.
6.1 General menu: communication and local time setup
The General menu is used for setting the remote communication parameters of the
ProSens instrument. The only option for communication with the ProSens is through the
Ethernet port. The first step is to configure the general parameters of the instrument for
communication. This is done by pressing on the General button (Figure 4) and
thereafter the Ethernet submenu button. The ProSens instrument can be connected to
a Local Area Network (LAN) - either to Client/server configuration network or to Peer-toPeer configuration network.
6.1.1 Client/server network
You can connect the ProSens instrument to the same network as the computer with a
standard LAN cable. The ProSens can be configured either with an automatic IP
address obtained through the DHCP server of the network or with a fixed IP address.
Ask your network manager for the required configuration and addresses to use.
Figure 3
The Auto negotiation, Full duplex and 100 Mbps boxes are mainly used as indicators,
but, in case of troubleshooting the internet connection, those can be modified. In normal
case, it is recommended to leave those values to the system default ones.
If the DHCP configuration is selected and a network cable is plugged to the computer
but no DHCP server is available, then the following error message will appears. This is a
Windows CE error message. Get rid of it by pressing the OK button, then you may set a
static IP address to fix the problem.
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If a DHCP server is not available or if a direct connection must be established, the
system must be configured to use a static IP address. In many case, only the IP address
should be updated. By default, subnet mask is the one shown below. Default gateway,
DNS server and WINS server should be left blank, unless an advanced user must know
what to enter in those fields. After setting those values properly, press the Apply button
which is now in a different color.
Figure 4
Then a dialog will ask you to reboot, press on Yes button to make this new parameters
effective.
6.1.2 Peer-to-Peer network
In a Peer-to-Peer network configuration, the ProSens Instrument is directly connected to
a remote computer using a crossover LAN cable. In this case, the ProSens
instrument must be set to a fixed IP address. NOTE: make sure the Subnet mask
address is the same than the remote computer.
NOTE:
IT IS STRONGLY RECOMMENDED TO SET THE INSTRUMENT IN
REMOTE MODE DURING REMOTE COMMUNICATION OPERATION.
SEE SECTION 0 FOR MORE INFORMATION.
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6.2 Configure menu: instrument and sensor configuration
The Configure menu has five different submenus accessible by pressing on their
respective button in the submenu bar at the top level of the screen.
6.2.1 System submenu
Use the System submenu functions to set the instrument sampling rate and the
measurement units for each sensor type. NOTE: these settings affect all modules,
i.e. it is not possible to adjust these settings differently for each module.
Figure 5
The measurement unit for each type of sensor is set by pressing on the drop down list at
the right top of the screen. Note: some sensor types are relevant only for the modules
they can be mated to. For instance, sensor types Tr and Tf are irrelevant for PSP or
PSM modules. There are four different sampling rates and possible settings (Figure 5).
6.2.2 Sensor submenu (module specific)
By default, PSP and PSM modules output data measurements in nanometer units, while
the PSR output data measurements in Celsius. However if further functionalities are
needed, such as zeroing, offsetting, scaling, calibration, etc, then one must first defines
one or more sensors in the sensor list of the Sensor submenu (Figure 6) and thereafter
select and assign one of these defined sensors to a particular module (see Channel
submenu for sensor selection and assignment).
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Figure 6
6.2.2.1 PSP module (list of sensors available)
There is a list of sensor types available with the PSP module. This includes sensor type
for pressure, distance, strain and temperature measurement
The T1 sensor is a general purpose temperature sensor. Sensor does not need to be
zeroed and display the actual temperature after the gage factors are properly entered.
T1 sensor can nonetheless be zeroed and offset.
The D1 sensor is a sensor that can measure a displacement in a certain range. It can be
offset only in mm or inches.
The Pa, Pr, Pv, P1 and P2 sensors are sensors for measuring pressure either relative or
absolute. Relative measurement does not refer to a differential against atmospheric or
other reference pressure, but refers to the need to zero the sensor at one point.
Measurement units vary from psi, bar, torr and/or mmHg.
The S1 sensor is a sensor that measure strain in microstrains (µe) unit. Strain sensor
must be zeroed at one point.
The Gauge Factors (GF0, GF1, GF2, GF3) are the calibration parameters that allow the
user to set the output of the sensor in physical unit. All sensor value for PSP modules,
either for debugging or advanced application purposes, could be expressed in
nanometer.
Sensor Type
T1
Pm
Pa
Pr
P1,P2
Pv
S1
D1
Measurement
Temperature
Pressure
Pressure
Pressure
Pressure
Pressure
Strain
Displacement
© Opsens Inc.
IMP0041 ProSens with PSP, PSM, PSR modules rev1.1.doc
Computation unit
°C
mmHg
Psi
Psi
Psi
mbar
µe
mm
Alternative Unit
°F
Mbar
Bar
Bar
Bar
Torr
In
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6.2.2.2 PSM module (list of sensors available)
The PSM module is a variation of the PSM module that is mainly devoted to medical
pressure sensing (OTP-M). After connecting the sensor, it should be zeroed while still at
atmospheric pressure. Because the OTP-M is an absolute pressure sensor, the PSM will
subtract any atmospheric pressure change from the pressure read by the optical
pressure sensors hence, resulting in an equivalent atmospheric relative pressure sensor.
6.2.2.3 PSR module (list of sensors available)
There are two types of sensors available with the PSR, that is the Tf and Tr sensors. Tf
is a general purpose sensors, while the Tf is dedicated to bridgewire (electro-explosive
device) applications. For more information on this module, user is referred to RadSens
manual and system.
6.2.2.4 Sensor list: adding, copying, modifying and deleting sensors
Press on the Add button to access to the Add sensor menu (Figure 7). A sensor ID
number is automatically assigned but the user can change that number (0 to 99) by
simply pressing in the No box. Then select which type of sensor to add by pressing on
the Type drop down list. Then enter the appropriate Gauge Factors if necessary (see
next section). Up to 100 sensors can be defined in the sensor list.
Figure 7
To copy a sensor, select it from the list and press on the Copy button. The sensor is
added to the end of the list (Figure 8)
Figure 8
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To modify a sensor, select it from the list and press in the desired GFx box (top of the
menu page) to modify its value. Once finished, press on the Apply button to validate the
modifications (Figure 9).
Figure 9
To delete a sensor, select it from the list and press on the Delete button. The whole
sensor list can be deleted by pressing on the Delete All button. In all cases, a dialog
box will ask you to confirm your choice ( Figure 10).
Figure 10
6.2.3 Channel submenu
The Channel submenu is used to enable or disabled modules, to assign a sensor to a
module, to select between running average and adaptive filters and setup filter
parameters, to zero and offset an assigned sensor, to setup the analog output and to
obtain the diagnostic parameters of the module.
6.2.3.1 Enabling/disabling modules
Each module has an ID # which is given by their respective slot position number, from 1
to 8 (1 is the left most slot position) in the ProSens chassis.
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Module # :
1
2
3
4
5
6
7
8
Figure 11
By default all the plugged modules are enabled. To disable a specific module, in the
Channel submenu, select the module no (# column) and press on the Enable box
(Figure 12). The later will toggle to Disable. Once disabled, the green LED indicator of
the module will goes off. It is recommended to turn off all modules that are not in
use.
Figure 12
6.2.3.2 Sensor assignment
By default, the modules have no sensor selected (i.e. None). However, a default sensor
is always mapped in the internal memory of the module. The default sensor for the PSP
and PSM modules is N1, while Tf is the default sensor for the PSR. To select and
assign to a module a specific sensor previously defined in the sensor list, from the
Channel menu first select a specific module number (# column). Next select the
appropriate sensor definition in the Sensor dropdown sensor list as shown in Figure 13.
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Figure 13
6.2.3.3 Diagnostic (module specific)
The user has access to different internal parameters for diagnosing potential problem
with the modules or with the sensor connected to it. The available diagnostics
parameters are shown below. First select the module # in the module list and then press
the Diagnostic button to refresh to diagnostic parameter values.
6.2.3.3.1
PSP and PSM Modules Diagnostic
Parameter and unit values
Description
Lamp %
Lamp driving level
Light Volts
Light level
Visibility %
Visibility level
Gain
Gain level
Vraw V
Raw voltage
Table 3
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Figure 14
The following table shows diagnostic values with good signal, poor signal, or with a fault
condition such as broken sensor or improper communication with a given PSP or PSM
module. A fault condition results in a “NO SIG” (no signal) or “S. LOST” (slot lost)
message being displayed in the Measure-numeric submenu windows (see Figure 23).
Parameter
Good signal
Poor Signal
Fault
> 2.2
< 2.2
—
Lamp
Light
Visibility
Gain
Vraw
NOTE: Without a sensor connected to a module, the instrument shows the
message “NO SIG” in the Measure-numeric submenu window. To get rid
of this message, disable the corresponding module.
In the unlikely situation that the “NO SIG” message appears while a sensor is connected
to the module, take note of the diagnostic parameters and contact Opsens technical
support. If “S. LOST” message appears, turn the instrument OFF and ON again. If the
problem still persists, please contact Opsens technical support. During a no signal or slot
lost condition, the different outputs of the instrument take the following states or values:
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6.2.3.3.2
Output
No Signal
Analog
0 Volt
Slot lost
Unpredictable
Ethernet port
65 535
65 534
Numeric display
NO SIG
S. LOST
Line graph display
(Not plotted)
(Not plotted)
Bar Graph display
(Not plotted)
(Not plotted)
(within ±5 V)
PSR Module Diagnostic
Parameter and unit values
Description
Lm %
Lamp driving level
Lg Volts
Light level
Sg (no units)
Signal amplitude
Table 3
Figure 15
The following table shows diagnostic values with good signal, poor signal, or with a fault
condition such as broken sensor or improper communication with a given PSR module.
A fault condition results in a “NO SIG” (no signal) or “S. LOST” (slot lost) message being
displayed in the Measure-numeric submenu windows (see Figure 23).
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Parameter
Good signal
Lm
Poor Signal
Fault
(reserved for internal use)
Lg
> 2.2
< 2.2
—
Sg
> 8 000
< 8 000
< 6 000
NOTE: Without a sensor connected to a PSR module, the instrument shows the
message “NO SIG” in the Measure-numeric submenu window. To get rid
of this message, disable the corresponding module.
In the unlikely situation that the “NO SIG” message appears while a sensor is connected
to the PSR module, take note of the diagnostic parameters and contact Opsens
technical support. If “S. LOST” message appears, turn the instrument OFF and ON
again. If the problem still persists, please contact Opsens technical support. During a no
signal or slot lost condition, the different outputs of the instrument take the following
states or values:
Output
No Signal
Analog
0 Volt
Slot lost
Unpredictable
Ethernet port
65 535
65 534
Numeric display
NO SIG
S. LOST
Line graph display
(Not plotted)
(Not plotted)
Bar Graph display
(Not plotted)
(Not plotted)
(within ±5 V)
6.2.3.4 Channel configuration: digital noise reduction filters
The ProSens instrument offers two types of digital noise reduction filters which are the
running average filter and the adaptive filter. Press on the Config. Button and select the
Filters tab to access to the Filters submenu as shown in Figure 16. Click on the
respective radio button to select one of the two filter types and adjust their parameters
accordingly as explained next. The default filter is the Running average for the PSP and
PSM, and Adaptive filter for the PSR.
Moving average filter
The moving average filter is the most common method to reduce the noise components
of the measured signal. The output of this filter is the average of the N most recent
measurement values. To adjust the average length parameter N, click on the Average
dropdown list and select the desired value (Figure 16).
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Figure 16
The running average filter is a very good filter for noise reduction; however this filter
comes with two major drawbacks. The first one is that this filter is not causal and
therefore it always introduce a delay (= N / 2 sampling period) into the signal. The
second drawback is that the filter attenuates the high frequency components of the
signal; in other word the filter is unable to track rapid signal variations. As explained
next, the Opsens’ Adaptive filter eliminates these drawbacks.
Opsens Adaptive filter
Opsens has designed and implemented in the ProSens signal conditioner a proprietary
high performance noise reduction adaptive filter. The term adaptive means the filter is
able to adapt itself in real time to the various signal conditions and select the optimal
filtering parameters. The Opsens’ Adaptive filter is a real causal filter that does not
introduce additional delay in the signal. While the filter is able to reduce the noise by
orders of magnitude, it is still able to respond to fast signal variations with a minimum of
attenuation of the signal high frequency components.
The Opsens’ adaptive filter can be tough as a discrete first-order low-pass filter with selfadjusting filter time constant. The adjustment range of the filter time constant is bonded
between the Tc Low and Tc High parameters (Figure 16). These two user-adjustable
parameters take multiple integer values of the sampling period of the instrument. For
example, at 1 kHz sampling rate, Tc Low = 1 and Tc High = 430 means a low filter time
constant of 1 ms and a high filter time constant of 430 ms respectively. The Threshold
parameter defines the minimum absolute signal variations (in °C for PSR and in
nanometer for PSP and PSM)* above which the self-adjusting process of the filter time
constant is engaged. Therefore any absolute signal variation below the Threshold set
value keeps the filter time constant to its highest value, i.e. to the set value of Tc High.
The Proportional Bandwidth (P.BW) parameter defines the maximum absolute signal
variations (in °C or nanometer)* below which the self-adjusting process of the filter time
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constant remains engaged. Any absolute signal variation above the P.BW set value
keeps the filter time constant to its lowest value, i.e. to the set value of Tc Low. For
absolute signal variations bonded between Threshold and P.BW set values, the filter
calculates and selects the optimal time constant within Tc Low and Tc High set values.
The default values must be computed and tested for every sensor type. If those values
were not computed and tested yet, the choice is simply not available. However, if it is
applicable, the user can experiment with different values to find out better values for its
particular application.
*IMPORTANT: the Threshold and P.BW parameters must be entered in Celsius for
PSR module, and in nanometer for the PSP and PSM modules.
NOTE: to disable signal filtering, select the Running Average filter and set the
Average parameter to 1
6.2.3.5 Channel configuration: zeroing and offsetting
Not all sensor type definitions assigned to specific module # can be zeroed and/or offset
at any time. But for those who can, press on the Config. Button to access to the
Channel configuration submenu as shown in Figure 178. The upper half of Channel
configuration window shows the current values of the Physical and the Internal Offset
parameters. The later parameter corresponds to the Tzero value.
Figure 17
Zeroing a sensor assigned to a module means to force the data measurements of that
selected module to be equal to zero immediately after it is activated and to set the
module output in relative temperature measurement. Automatic zeroing is performed by
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pressing on the Null button. Immediately after pressing the Null button, the selected
module takes an averaged (100 samples) reading of the assigned sensor and calculate
a new GF0 value so the output measurement is now merely equal to zero. This new
GF0 value replaces the previous value in the defined sensor of the list. The actual zero
value (Tzero) is displayed in the Internal Offset box. Manual zeroing can be done by
entering a zero value in Internal Offset box. This value must be in physical unit. To
remove the zero value and to come back in absolute temperature measurement, enter
zero in that box.
Offsetting a sensor assigned to a module means to offset the data measurements of that
selected module by a specific value (Output data = Tabs or Trel minus the offset value).
Unlike zeroing, the offset does not affect the Gauge Factors. To offset an assigned
sensor by a given value, enter that value into the Physical Offset box. This value must
be in physical unit. The offset value does not affect the zero value, i.e. zeroing a sensor
with an offset value (>0) in place makes no difference. To remove the offset, enter zero
value into the Physical Offset box
Sensor Type
T1
Pm
Pa
Pr
P1,P2
Pv
S1
D1
Internal offset support
No
Yes
No
Yes
Yes
No
Yes
No
Tf
Tr
Yes
Yes
Physical offset support
Yes
Yes
No
No
Yes
No
Yes
Yes (can be configured
using Null function)
Yes
Yes
6.2.3.6 Channel configuration: analog output settings
The ± 5 V analog output is configured independently for each of the modules. In the
Channel menu, select the appropriate module # and press on the Config. button. The
bottom half of Channel configuration window shows the current values of the analog
output Scale and Offset parameters. The value of these parameters can be changed by
simply pressing in the Scale and/or Offset box (see Figure 17).
The Scale factor or parameter corresponds to the analog output linear response in
Physical unit / Volt, while the Offset corresponds to the temperature value in Physical
unit which the analog output is set to be at zero volt. The measurement as a function of
the analog output voltage is thus given by:
Analog output = [Physical unit] x Scale (Base Unit / Volt) + Offset Base Unit .
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6.2.3.7 Channel configuration: Config All
Use the Config All / Filter tab submenu to select and set for all the channels the
running average filter (See Figure 18).
Figure 18
Use the Config All - Offsets/Analog Ouput tab submenu to assign the Internal Offset,
the Physical Offset, the Analog Scale, or the Analog Offset parameter with the same
value for all the modules plugged in the ProSens chassis (See Figure 19).
Figure 19
6.2.4 Slot submenu
The Slot submenu (Figure 20) shows the hardware and firmware information on each of
the modules. The Scan slots button pings all modules to verify if they are still running
properly. This functionality can be use, for example, as sanity check after a module
firmware upgrade. In case of communication problem with a slot, press the Reinitialize
button for reinitializing the slots. NOTE: reinitializing the slots may reset some of the
instrument configuration parameters to their default values
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Figure 20
The information shown in Figure 20 has the following meaning:
# : This label represents the physical slot number and the module number as well;
Model: This represents the model type name of the module.
SN: The serial number.
HRN: Hardware revision number. This revision number is changed only when the
module is physically updated.
FRN: Firmware revision number. This number is modified after a firmware upgrade.
6.2.5
I-source submenu (optional)
An optional current source can be ordered with the ProSens instrument. This current
source is useful for calibrating bridge-wire electro-explosive devices. The I-Source
submenu includes basic commands for controlling the current source (Figure 21).
Figure 21
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Initialisation: Perform the initialisation procedure of the current device. Also, this reset
back the current to its default value (0 mA).
Current:
This indicates the current that is currently set. To modify it, press in the
text box and a numeric pad window will open. Modify the value and press
Apply. Press the Set Current button to program the new value.
Set Current: When enabled, press this button to activate the new value indicated in the
Current text field.
Start:
This starts a current steps sequence loop as shown in Figure 22. The
user adjustable sequence parameters are Min and Max current (mA), the
Step (mA) and the duration (second). The loop runs in the background
even if the user switch to another menu
Stop:
Stop the current steps sequence loop
Current
Max
Duration
Step
Min
Time
Figure 22
6.3 Measure menu
The Measure menu allows the user to turn ON the data display so the data
measurements can be visualized on the color TFT screen of the ProSens instrument.
The data measurements can be displayed in three different graphical forms: numeric,
line graph and bar graph form.
6.3.1 Numeric submenu
To have data measurements displayed in numerical form on the screen, select Numeric
on the top menu bar and then press on the Start button if not already ON. Depending of
the instrument/module configuration and state, the numeric screen will appears
differently. Figure 23 shows all possible combinations.
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Figure 23
Each slot # is displayed on the screen and it can show different information:
XXX.XX yy The numeric data measurement value (XXX.XX) and the associated unit
(yy)
---
Slot is empty or the module is disabled.
NO SIG.
No Signal. No sensor is connected to the module, sensor measures
values out of range, sensor is faulty, or module is faulty. If the problem
persists, contact Opsens technical support
S. LOST:
Slots Lost. Hardware or software fault prevent the module from sending
the data or prevent the ProSens inboard computer to receive the data.
Turn OFF and ON the instrument. If the problem persists, contact
Opsens technical support.
The numeric display is refreshed every 0.3 second. The numeric display can be turned
ON (default) and OFF with the START and STOP button.
NOTE
If the instrument is connected to the LAN and the numeric display is
turned ON, the measurement data are output to the Ethernet port as well.
Turning OFF the numerical display or going out of the Measure window
immediately stop the measurement output at the Ethernet port.
6.3.2 Line Graph
To have data measurements displayed in line graph form on the screen, select Line
Graph on the top menu bar and then press on the Start button if not already ON (Figure
24). The line graph displays data like an electrocardiogram waveform (EKG display) that
is for each new value, the line graph plots the value to the right of the last value. When
the plot reaches the right border of the plotting area, it begins plotting again from the left
border with the old data on the right and the new data on the left separated by a white
vertical band.
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Figure 24
Each module has its own color line plot as indicated in the next table. The graph color
legend can be viewed (but cannot be changed) by pressing anywhere in the plot area of
the graph (Figure 25)
Module #
Color
1
DarkSlateBlue
2
Orange
3
Black
4
DarkSeaGreen
5
Brown
6
DarkViolet
7
BurlyWood
8
Red
Figure 25
The scaling of the graph is not adjusted automatically. Press on Settings button to
adjust the graph scales and to access to other graph options.
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Figure 26
Measure rate:
This is the time period between each data measurement plotted
on the line graph. The minimum time period is given by the
inverse of the sampling frequency. At sampling rate of 1 kHz,
this corresponds to 0.001 second.
Display points (X Axis): The length in second of the X-axis scale. The minimum
permitted value is 2 seconds and the maximum permitted value
is 86400 seconds (24 hours)
Y Axis min:
Minimum value of the Y-axis scale
Y Axis max:
Maximum value of the Y-axis scale
The Graph Line can be turned ON (default) and OFF with the START and STOP button.
NOTE
If the instrument is connected to the LAN and the line graph display is
turned ON, the measurement data are output to the Ethernet port as well.
Turning OFF the line graph display or going out of the Measure window
immediately stop the data measurement output at the Ethernet port.
Click on the Statistics button to display the principal statistical parameters of the signal
measured on each of the slots. These are the minimum and maximum values, the
average value and the standard deviation of the signal as well as a NO SIGNAL
condition, if any detected.
Figure 27
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These parameters are calculated using all the measurement values acquired since the
last time the Start button of the line graph display was pressed. To reset these
parameters, press on the Stop button.
6.3.3 Bar Graph
To have data measurements displayed in bar graph form on the screen, select Bar
Graph on the top menu bar and then press on the Start button if not already ON (Figure
28). Each bar number corresponds to the module number. The bar graph has a peak
level numeric indicator located at the top of each bar and an user-adjustable alarm level
indicator.
Figure 28
The scaling of the bar graph is not adjusted automatically. Press on Settings button to
adjust the graph scales and to access to other graph options such as peak level and
alarm indicator (Figure 30).
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Figure 30
Measure rate:
This is the time period between each data measurement plotted
on the bar graph. The minimum time period is given by the
inverse of the sampling frequency. At sampling rate of 1 kHz,
this corresponds to 0.001 second.
Y Axis min:
Minimum value of the Y-axis scale
Y Axis max:
Maximum value of the Y-axis scale
Threshold:
Set the alarm level. When the data measurement exceed that
value, the bar indicator turns to red (Figure 29)
Falloff time:
The time the peak indicator stays before it falls off back
(Erreur ! Source du renvoi introuvable.)
Figure 29
NOTE
If the instrument is connected to the LAN and the bar graph display is
turned ON, the measurement data are outputted to the Ethernet port as
well. Turning OFF the bar graph display or going out of the Measure
window immediately stop the data measurement output at the Ethernet
port.
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Click on the Statistics button to display the principal statistical parameters of the signal
measured on each of the slots. These are the minimum and maximum values, the
average value and the standard deviation of the signal as well as a NO SIGNAL
condition, if any detected.
Figure 30
6.4 Memory menu
The ProSens has an internal hard disk option. When enabled, the user can make stand
alone real time recording of Gbytes of measurement data. Recorded data is easily
transferred on remote computer through the Ethernet interface via a FTP server. At boot
up time, the ProSens detects the availability of the hard disk option.
The Memory menu consists of different set of functions accessible through the following
user interface.
Figure 31
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Acquire:
This button opens the data acquisition dialog box menu. Use this
menu to set up and start data acquisition and saving to the hard
disk. See section 0 for more details.
Current directory:
This text box indicates the current directory used for the data file
storage. Use the Current directory (…) button next to this box to
change the current directory. Note: the directory root name for the
internal hard disk is “\Storage Card”. See section 6.4.1 for more
details.
Free space:
This blue fill indicator shows how much free hard disk space is
remaining. The absence of blue color indicates that the drive is full.
File table:
This table shows the list of data files (.txt or .bin) existing in the
current directory. Each row of the table displays the name of the
data file, its size in bytes and the date it was created or last
modified.
Summary:
This button opens the data file summary dialog box for the
selected file in the file table. Each data file contains information
that describes the system settings that were in place when
producing the data. This includes global settings such as the
system and channel description text field (section Erreur ! Source
du renvoi introuvable.), system sampling rate and data
acquisition period, and channel setup information.
Copy:
This button opens a dialog box to select a destination folder. The
selected file in the file table is copied to the selected destination
folder.
Copy all:
This button opens a dialog box to select a destination folder. All
data files in the current directory are copied to the selected
destination folder.
Move:
This button opens a dialog box to select a destination folder. The
selected file in the file table is moved to the selected destination
folder.
Move all:
This button opens a dialog box to select a destination folder. All
data files in the current directory are moved to the selected
destination folder.
Delete:
This button deletes the selected file in the file table. A dialog box
prompts the user to confirm the action.
Delete all:
This button deletes all the files in the current directory. A dialog
box prompts the user to confirm the action.
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Remove folder:
This button deletes the current directory and all the files and
subdirectories included into it. A dialog box prompts the user prior
to confirm the action. Note: the root folder cannot be removed.
6.4.1 Select Folder dialog
Pressing on the Current directory (…) button in the Memory menu opens the Select
Folder dialog box, which shows the folder tree (Erreur ! Source du renvoi
introuvable.4). Press on the New button to create a new folder as a child of the
selected folder. Press the OK button to set the selected folder as the current directory or
press the Cancel button to leave the current directory unchanged.
Figure 32
6.4.2 File data acquisition
Pressing on the Acquire button in the Memory menu opens the File data acquisition
dialog box. The Directory text box indicates in which directory the data file will be saved.
To change the current directory, press on the Current directory (…) button next to this
box.
Figure 33
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The File name text box indicates the file name in which the measurement data will be
recorded and saved. To change the file name, touch in text box. A software
alphanumeric key pad will appear. Alternatively, press on the Auto button to generate
automatically a file name based on the current date and time of the system.
Press on one of the File format radio buttons to select the Text or Binary file format.
Data recorded in text file format are easily opened and viewed in other applications such
as MS Word or MS Excel. Binary files are more efficient for storing large amount of data
as they take up less disk space than text file. On the other hand, binary files can only be
opened and viewed in Opsens’ software applications.
Press in the Measure period box to set the file data acquisition period. This is the time
interval between each recorded data. This period of time cannot be smaller than the
inverse of the module sampling rate (the default value). NOTE: this setting does not
affect the module sampling frequency, for example with a Measure period of 0.005
second and with the module set to 1000 Hz sampling frequency (i.e. sampling period =
0.001 second), only one every five sampled data is acquired and recorded.
Press in the Acquisition time box to set the time duration of the file data acquisition.
For continuous acquisition (infinite duration), set this parameter to zero.
Press in the Maximum file size box to set the size limit (in MByte) of the data file (0 MB
means no limit). The system automatically opens a new file when the size limit value is
encountered. The acquisition continues into that new file reusing the original file name
appended with “_X” at the end of it where X is an integer number automatically
incremented by one each time a new file is created. This feature is recommended if the
data file is expected to be larger that 50 MB (Text file larger than 50 MB might be difficult
to handle with common software applications). Note: the number of files in a given
directory is limited to one thousand. The Estimated file size indicator provides an
estimation of the file size based on file format, acquisition time, measure period and
maximum file size settings.
When ready, press on the Acquire button to launch the file data acquisition process.
The display will automatically switch to the Measure \ Numeric submenu window. A
progress bar indicating the current status of the acquisition will appear if the acquisition
is set with a finite duration. The acquisition process can be terminated at any time by
pressing the Stop button in the Measure \ Numeric submenu window.
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Figure 34
Note: the Line Graph and Bar Graph displays are still available during the acquisition
process but to prevent possible display lag and inconsistency, the plotting period of
these displays is limited to a minimum of 0.1 second. User may switch from any display
at any time without affecting the current ongoing file data acquisition.
Press on Cancel button to exit the File data acquisition dialog box and return to the
Memory menu.
6.4.3 Data acquisition file structure
Binary and text format data acquisition files have a different structured type of records.
The structure of the text format file is shown the next table 1. Each file has a header
followed by the recorded data. The header is divided in two parts: first a general
description of the system and second, a detailed description of each of the enabled
channels.
The data are recorded in rows and columns where each row represents one sequence
of data records of all the enabled channels and each column represents all the data
records of a particular channel. First row corresponds to the first enabled channel (in
channel # increasing order), second row to the second enabled channel and so on. The
rows are separated by a tab character (\t) and each line ends with a Windows™ end of
line two characters (\r\n). Each data has a fixed field width of ten characters.
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Data acquisition file structure (Text format)
Created:
This is the date and time the file was created
Description:
This is the user-information entered in the
Config All / Description tab submenu. See
section Erreur ! Source du renvoi introuvable.
IDN:
This is the identification string of the system that
was used to acquire the data. The field goes as
follow: Opsens inc., Product name, Serial
number, Hardware revision number, BootLoader
revision number
Sampling rate:
The sampling rate used during acquisition
Measure period:
The data acquisition period
Channel number:
Which channel
Description:
This is the user-information entered in the
Config All / Description tab submenu. See
section Erreur ! Source du renvoi introuvable.
Module type:
The type of module used
Sensor type:
The type of sensor used
Sensor unit:
The measurement unit of the data
Gauge factors:
The Gauge factors (if it applies) of the sensor
used
Internal offset:
The internal offset (if any)
Physical offset:
The physical offset (if any)
Filter type:
The type of filter used and its settings
{General description}
Line feed (\r\n)
{Header}
{Channel description}
Line feed (\r\n)
Channel number:
Which channel
...
...
Line feed (\r\n)
Module data:
Line feed (\r\n)
{Data}
<data channel 1>
<\t>
<data channel 2>
<\t>
...
<data channel N>
<\r\n>
<data channel 1>
<\t>
<data channel 2>
<\t>
...
<data channel N>
<\r\n>
<data channel 1>
<\t>
<data channel 2>
<\t>
...
<data channel N>
<\r\n>
...
...
...
...
...
...
...
<data channel 1>
<\t>
<data channel 2>
<\t>
....
<data channel N>
<\r\n>
See also the data acquisition file example on next page
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Data acquisition file example (text format):
Created: Friday, September 21, 2007 16:12:24
Description: Test 56 – Aircraft XYZ.
IDN: Opsens inc., ProSens, SN:15-000007, HRN:5.00.10, FRN:1.18a 07Sep21, LRN:1.06
07Sep17
Sampling rate (Hz): 500
Measure period (s): 0.002
Channel number: 2
Description: Right wing
Module type: PSR-100
Sensor type: Tf
Sensor unit: Celsius
Gauge factors: 0 0 0 0
Internal offset: 0.000000
Physical offset: 0.000000
Filter type: AdaptiveFilter (1,430,0.15,3)
Channel number: 3
Description: Left wing
Module type: PSR-100
Sensor type: Tr
Sensor unit: Celsius
Gauge factors: 2893 0 0 0
Internal offset: 28.926514
Physical offset: 0.000000
Filter type: Running Average (1)
Module data:
19.4208812
19.4207630
19.4206218
19.4186687
19.4185562
…
20.8440742
20.8441581
20.8441486
20.8441200
20.8441562
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7. Remote operation and data acquisition
Remote operation of the ProSens instrument is done through its Ethernet
communication interface. The interface uses the TCP/IP protocol for communication with
the instrument. Remote control and data acquisition over the Ethernet interface is done
on a ASCII-syntax message level basis using the SCPI command set of the ProSens
instrument (SCPI: Standard Commands for Programmable Instrumentation). Therefore
the user can create its own remote control software using the various SCPI commands
available for the ProSens. But for ease of operation, Opsens provides its own control
and data acquisition software, called SoftSens Software, which gives access to all the
functionalities of the ProSens instrument. See SoftSens user manual for how to
remotely control the ProSens instrument.
For those who which to develop their own remote control software, ask for Opsens
ProSens communication user manual to get all the information about the various I/O
functions and commands to remotely controls the ProSens.
7.1 Remote and Local modes
It is strongly recommended to put the ProSens instrument in remote mode when
remotely controlling the instrument. In remote mode, the touch-screen display menus are
disabled except for the LOCAL button. Failure to do so may results in conflicting
situations between remote and local users. To put the instrument in remote mode, press
on the Remote button (this mode can also be set remotely using the corresponding
SCPI command). To return to local mode and enable the touch-screen display menus,
press on the Local button.
In remote control situation, do not leave the data display ON (see Measure menu) as in
this case, the instrument continuously output data measurements at the Ethernet port.
Failure to do so may result in conflicting situations between the instrument and the
remote control software. To turn OFF the data display, press the OFF button in either,
the Numeric, Line Graph or Bar Graph menu or simply select a Menu other than
Measure. Note: putting the instrument in remote mode automatically disables the data
display.
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