ICP DAS USA PCI-1002L User manual

PCI-1002 Series Card
User Manual
12-bit, 110 kS/s or 44 kS/s Multi-function Board Version 3.0, Jun. 2018
SUPPORTS
Board includes PCI-1002L, PCI-1002H, PCI-1002LU, PCI-1002HU, PEX-1002L and
PEX-1002H.
WARRANTY
All products manufactured by ICP DAS are warranted against defective materials
for a period of one year from the date of delivery to the original purchaser.
WARNING
ICP DAS assumes no liability for damages consequent to the use of this product.
ICP DAS reserves the right to change this manual at any time without notice. The
information furnished by ICP DAS is believed to be accurate and reliable. However,
no responsibility is assumed by ICP DAS for its use, nor for any infringements of
patents or other rights of third parties resulting from its use.
COPYRIGHT
Copyright © 2018 by ICP DAS. All rights are reserved.
TRADEMARK
Names are used for identification only and may be registered trademarks of their
respective companies.
CONTACT US
If you have any question, please feel to contact us at:
[email protected]; servic[email protected]
We will give you quick response within 2 workdays.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 1
TABLE OF CONTENTS
PACKING LIST ....................................................................................................................................................................... 3
1. INTRODUCTION ................................................................................................................................................ 4
1.1 FEATURES ............................................................................................................................................................ 5
1.2 SPECIFICATIONS.................................................................................................................................................... 6
1.2.1 PCI-1002L/1002H/1002LU/1002HU............................................................................................................ 6
1.2.2 PEX-1002L/1002H ......................................................................................................................................... 7
1.2.3 Analog Input Range........................................................................................................................................ 8
1.2.4 AD Trigger Methods ....................................................................................................................................... 8
1.2.5 Interrupt Channel........................................................................................................................................... 9
1.2.6 Programmable Timer/Counter...................................................................................................................... 9
1.3 THE BLOCK DIAGRAMS........................................................................................................................................ 10
2. HARDWARE CONFIGURATION ........................................................................................................................11
2.1BOARD LAYOUT .................................................................................................................................................. 11
2.2 JP1: AD INPUT TYPE SELECTION ......................................................................................................................... 13
2.3 VR1/VR2/VR3: AD CALIBRATION..................................................................................................................... 13
2.4 CARD ID SWITCH................................................................................................................................................ 14
2.5 JP2: DI PORT SETTINGS (PULL-HIGH/LOW)........................................................................................................ 15
2.6 SYSTEM BLOCK................................................................................................................................................... 15
2.7 AD INPUT SIGNAL CONNECTION........................................................................................................................... 16
2.8 PIN ASSIGNMENTS .............................................................................................................................................. 21
3. HARDWARE INSTALLATION............................................................................................................................23
4. SOFTWARE INSTALLATION.............................................................................................................................27
4.1 OBTAINING/INSTALLING THE DRIVER INSTALLER PACKAGE .................................................................................... 27
4.2 PNPDRIVER INSTALLATION................................................................................................................................. 30
4.3 VERIFYING THE INSTALLATION ............................................................................................................................. 32
4.3.1 Accessing Windows Device Manager............................................................................................................ 32
4.3.2 Check that the Installation ............................................................................................................................ 35
5. BOARD TESTING ..............................................................................................................................................36
5.1 SELF-TEST WIRING ............................................................................................................................................ 36
5.1.1 Digital Input/Output Test Wiring................................................................................................................... 36
5.1.2 Analog Input Test Wiring............................................................................................................................... 37
5.2 LAUNCH THE TEST PROGRAM............................................................................................................................... 38

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 2
6. I/O REGISTER ADDRESS..................................................................................................................................41
6.1 HOW TO FIND THE I/O ADDRESS ......................................................................................................................... 41
6.2 THE I/O ADDRESS MAP ...................................................................................................................................... 45
6.2.1 Section1......................................................................................................................................................... 46
6.2.2 Section2......................................................................................................................................................... 47
7. FUNCTION OPERATIONS .................................................................................................................................52
7.1 DIGITAL I/O....................................................................................................................................................... 52
7.2 THE 8254 TIMER............................................................................................................................................... 53
7.3 THE AD TIMER..................................................................................................................................................... 54
7.4 AD CONVERSION ................................................................................................................................................ 56
7.4.1 AD Conversion Trigger Modes ....................................................................................................................... 58
7.4.2 AD Transfer Modes........................................................................................................................................ 58
7.4.3Software Triggers and Polling Techniques..................................................................................................... 59
8. DEMO PROGRAMS ...........................................................................................................................................62
8.1 DEMO PROGRAM FOR WINDOWS.......................................................................................................................... 62
8.2 DEMO PROGRAM FOR DOS .................................................................................................................................. 64
8.3 DIAGNOSTIC PROGRAM........................................................................................................................................ 65
8.3.1 Power-on Plug & Play Test ............................................................................................................................ 65
8.3.2 Driver Plug & Play Test .................................................................................................................................. 65
8.3.3 DIO Te st ......................................................................................................................................................... 66
8.3.4 AD Test .......................................................................................................................................................... 66
APPENDIX: DAUGHTER BOARD...............................................................................................................................67
A1. DB-37 and DN-37 ............................................................................................................................................... 67
A2. DB-1825.............................................................................................................................................................. 67
A3. DB-8225.............................................................................................................................................................. 68
A3. DB-16P Isolated Input Board............................................................................................................................. 68
A4. DB-16R Relay Board........................................................................................................................................... 69

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 3
Packing List
The shipping package includes the following items:
One PEX/PCI-1002 series card hardware
One printed Quick Start Guide
One Software Utility CD
One CA-4002 D-Sub Connect
Note:
If any ofthese items is missing or damaged, contact thedealer from whom you purchased the product. Save
the shipping materials and carton in case you need to ship or store the product in the future.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 4
1. Introduction
The PCI-1002LU/HU and PEX-1002LU/HU cards are the new generation product that ICP DAS
provides to meet RoHS compliance requirement and is designed as completely compatible with the
PCI-1002L/H. Users can replace the PCI-1002L/H by the PCI-1002LU/HU and PEX-1002LU/HU directly
without software/driver modification.
The PCI-1002L/H supports 5 V PCI bus and PCI-1002LU/HU supports 3.3 V/5 V PCI bus, while the
PEX-1002L/H supports PCI Express bus. The PCI-1002 series is a family of AD board and features
low-gain 110 kS/s or high-gain 44 kS/s analog input. It provides 12-bit 32 single-ended analog input
channels or 16 differential analog input channels, 16 digital input channel and 16 digital output
channel.
The PCI-1002LU/HU and PEX-1002L/U provide pull-high/low jumpers allow user to predefine the DI
status instead of floating when the DI channels are unconnected or broken. The PEX-1002L/H adds a
Card ID switch for users to recognize the board by the ID via software when using two or more
PEX-1002L/H cards in one computer.
PCI-1002LU/HU (Universal PCI version) and PEX-1002L/H (PCI Express) is fully compatible with the
PCI-1002L/H (PCI version). PCI-1002LU/HU and PEX-1002L/H (new version) sell now; PCI-1002L/H
(old version) will be phase out.
These cards support various OS such as Linux, DOS, 32/64-bit Windows 10/8/7/2008/2003/XP. DLL
and Active X control together with various language sample program base on Turbo C++, Borland
c++, Microsoft C++, Visual C++, Borland Delphi, Borland C++ Builder, Visual Basic, C#.NET, Visual
Basic.NET and LabVIEW are provided in order to help users to quickly and easily develop their own
applications.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 5
1.1 Features
•Bus: 5 V PCI (Peripherals Component Interface) bus for PCI-1002L/H
•Universal PCI card, supports both 5 V and 3.3 V PCI bus for PCI-1002LU/HU
•PCI Express card, supports PCI Express x1 for PEX-1002L/H
•Card ID function for PEX-1002L/H
AD:
•The sampling rate of single channel or multiple channels is 110 kS/s. for low gain model and 44
kS/s. for high gain model.
•32 single-ended / 16 differential programmable inputs.
•Provides three different AD trigger methods.
•Provides three different external trigger methods.
•Programmable gain control, programmable offset control.
DIO:
•16 digital inputs and 16 digital outputs (TTL compatible).
•High speed data transfer rate: 2.7 M word/sec (non-burst mode).
•Digital input port can be set to pull-high or pull-low (PCI-1002 LU/HU and PEX-1002L/H only).
Timer:
•One 16-bit machine independent timer for software (Timer 2).
•Two 16-bit pacer timers for AD converter and interrupt (Timer0, Timer1).

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 6
1.2 Specifications
1.2.1 PCI-1002L/1002H/1002LU/1002HU
Model Name
PCI-1002L
(Phased-out)
PCI-1002H
(Phased-out)
PCI-1002LU
PCI-1002HU
Analog Input
Channels
32 single-ended/16 differential
AD Converter
12-bit, 8 μs Conversion time
Sampling Rate
110 kS/s.
44 kS/s.
110 kS/s.
44 kS/s.
FIFO Size
N/A
Over voltage Protection
Continuous +/-35 Vp-p
Input Impedance
10 MΩ/6 pF
Trigger Modes
Software, Internal programmable pacer, External (5 V/TTL compatible)
Data Transfer
Polling, Interrupt
Accuracy
0.01 % of FSR ±1 LSB @ 25 °C, ± 10 V
Zero Drift
+/- 4 ppm/°C of FSR
Digital Input
Channels
16
Compatibility
5 V/TTL
Input Voltage
Logic 0: 0.8 V max.; Logic 1: 2.0 V min.
Response Speed
1.0 MHz
Digital Output
Channels
16
Compatibility
5 V/TTL
Output Voltage
Logic 0: 0.4 V max.; Logic 1: 2.4 V min.
Output Capability
Sink: 2.4 mA @ 0.8 V; Source: 0.8 mA @ 2.0 V
Response Speed
1.0 MHz
Timer/Counter
Channels
3(Independent x 1/Internal pacer x 1/External pacer x 1)
Resolution
16-bit
Compatibility
5 V/TTL
Input Frequency
10 MHz max.
Reference Clock
Internal: 4 MHz
General
Bus Type
5 V PCI, 32-bit, 33 MHz
3.3 V/5 V Universal PCI, 32-bit, 33 MHz
Data Bus
16-bit
Card ID
No
I/O Connector Female DB37 x 1, 20-pin box header x 2
Dimensions (L x W x D)
175 mm x 105 mm x 22mm
188 mm x 105 mm x 22 mm
Power Consumption
960 mA@ +5 V
Operating Temperature
0 ~ 60 °C
Storage Temperature
-20 ~ 70 °C
Humidity
5 ~ 85% RH, non-condensing

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 7
1.2.2 PEX-1002L/1002H
Model Name
PEX-1002L
PEX-1002H
Analog Input
Channels
32 single-ended/16 differential
AD Converter
12-bit, 8 μs Conversion time
Sampling Rate
110 kS/s.
44 kS/s.
FIFO Size
N/A
Over voltage Protection
Continuous +/-35 Vp-p
Input Impedance
10 MΩ/6 pF
Trigger Modes
Software, Internal programmable pacer, External (5 V/TTL compatible)
Data Transfer
Polling, Interrupt
Accuracy
0.01 % of FSR ±1 LSB @ 25 °C, ± 10 V
Zero Drift
+/- 4 ppm/°C of FSR
Digital Input
Channels
16
Compatibility
5 V/TTL
Input Voltage
Logic 0: 0.8 V max.; Logic 1: 2.0 V min.
Response Speed
500 kHz
Digital Output
Channels
16
Compatibility
5 V/TTL
Output Voltage
Logic 0: 0.4 V max.; Logic 1: 2.4 V min.
Output Capability
Sink: 2.4 mA @ 0.8 V; Source: 0.8 mA @ 2.0 V
Response Speed
500 kHz
Timer/Counter
Channels
3(Independent x 1/Internal pacer x 1/External pacer x 1)
Resolution
16-bit
Compatibility
5 V/TTL
Input Frequency
10 MHz max.
Reference Clock
Internal: 4 MHz
General
Bus Type
PCI Express x 1
Data Bus
16-bit
Card ID
Yes (4-bit)
I/O Connector Female DB37 x 1, 20-pin box header x 2
Dimensions (L x W x D)
188 mm x 105 mm x 22 mm
Power Consumption 900 mA @ +3.3 V
350 mA@ +12 V
Operating Temperature
0 ~ 60 °C
Storage Temperature
-20 ~ 70 °C
Humidity
5 ~ 85% RH, non-condensing

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 8
1.2.3 Analog Input Range
Model
PCI-1002L/LU and PEX-1002L (Low-Gain)
Gain 1 2 4 8
Bipolar
±10 V
±5 V
±2.5 V
±1.25 V
Sampling Rate Max. 100 kS/s.
Model
PCI-1002H/HU and PEX-1002H (High-Gain)
Gain 1 10 100 1000
Bipolar
±10 V
±1 V
±0.1 V
±0.01 V
Sampling Rate Max. 44 kS/s. 36 kS/s. 7 kS/s. 0.8 kS/s.
1.2.4 AD Trigger Methods
Trigger methods:
Software trigger.
Pacer trigger: 16-bit programmable timer/counter.
External trigger: Pre-trigger, Post-trigger, external Pacer trigger.
Figure 1-1: Trigger methods of PCI-1002 series.
External trigger
t
Start End
Post-trigger mode
CHn
External trigger
Start End
CHn
Pre-trigger mode
t
t
Start End
Normal trigger mode
CHn
Pacer or software trigger
CHn
External trigger
EndStart
External pacer trigger mode
t

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 9
1.2.5 Interrupt Channel
Interrupt: INTA (Automatically assigned by PCI-initiator).
Enable/Disable: Via PCI control register and add-on control register.
Interrupt source: (Selected by on-board control register)
1. AD conversion interrupt.
2. Pacer 0 interrupt (Timer 0).
3. Pacer 1 interrupt (Timer 1).
4. External interrupt.
Figure 1-2: Programmable interrupt source.
1.2.6 Programmable Timer/Counter
Type: 82C54 – 8 programmable timer/counter.
Timers:
•Timer 0 for Pacer triggers and interrupts.
•Timer 1 for External trigger and interrupt.
•Timer 2for software machine independent timer.
AD busy
IRQ
End of Conversion
1.
Pacer 0
IRQ
Falling edge of Pacer 0
2.
Pacer 1
IRQ
Falling edge of Pacer 1
3.
External
Trigger
IRQ
Falling edge of
4.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 10
1.3 The Block Diagrams
Here’s the block diagram of PCI-1002 series:
Figure 1-3: The PCI-1002 series block diagram.
X86 System
PCI BUS
PCI Interface System
EPROM
Local System Controller Status
Control
16 bits DI
16 bits DO
Pacer
Generator
A/D
Data
Buffer
Analog Inputs
Digital Outputs
Digital Inputs
A/D control logic
12-bit A/D
Converter
MuxGain
4MHz
Interrupt

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 11
2. Hardware Configuration
2.1 Board Layout
Figure 2.1 and Figure 2.2 shows the layout of the PEX-1002L/H and PCI-1002LU/HU boards and the
locations of the configuration jumper and connector for signal wiring.
PEX-1002L/H
PEX-1002H
CON2
CON2
SW1
1 2 3 4
CON1
JP1
VR3VR2VR1 PEX-1002L
JP2
CON1
16-channel Digital Output
Refer to Section 2.8 “PinAssignments” for
more details.
CON2
16-channel Digital Input
CON3
The terminal for the AD and DA converters for
voltage input/output
SW1 Card ID function
Refer to Section 2.4 “Card ID Switch”for more
details.
JP1 Analog input type selection
Refer to Section 2.2 “JP1:AD Input Type
Selection”for more details.
VR1/VR2/VR3 AD Calibration
Refer to Section 2.3 “VR1/VR2/VR3:AD
Calibration”for more details.
JP2 Pull-high/pull-low jumper for DI
Refer to Section 2.5 “JP2: DIPort Settings
(Pull-High/Low)”for more details.
Figure 2-1

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 12
PCI-1002LU/HU.
PCI-1002LU/HU REV:B
CON3
CON2
CON1
JP1VR3
VR2
VR1
CON1
16-channel Digital Output
Refer to Section 2.8 “Pin Assignments”for
more details.
CON2
16-channel Digital Input
CON3
The terminal for the AD and DA converters for
voltage input/output
JP1 AD input type selection Refer to Section 2.2 “JP1: AD Input Type
Selection”for more details.
VR1/VR2/VR3 AD Calibration Refer to Section 2.3 “VR1/VR2/VR3: AD
Calibration”for more details.
Figure 2-2

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 13
VR1, VR2, VR3
2.2 JP1: AD Input Type Selection
This jumper is used to select the analog input type. For single-ended inputs, connect pin1, 3 and
pin2, 4. For differential inputs, pin3, 5 and pin4, 6 should be connected. The configuration is
illustrated in the figure below.
JP4
1
5
2
6
JP4
1
5
2
6
3 4 3 4
Single-Ended Differential
Inputs (Default)
For detailed information about the single-ended and differential input wiring, refer to Section 2.7 “AD
Input Signal Connection”.
2.3 VR1/VR2/VR3: AD Calibration
AD Calibration for PCI-1002 series card:
Step 1: Apply +10 V to channel 0.
Step 2: Apply +0 V to channel 1.
Step 3: Apply -10 V to channel 2.
Step 4: Run DEMO6.EXE of DOS.
Step 5: Adjust VR1 until channel 0 = fff or ffe
Step 6: Adjust VR2 until channel 1 = 800 or 801
Step 7: Adjust VR3 until channel 2 = 000 or 001
Step 8: Repeat Step 4, Step 5 and Step 6 until all are OK.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 14
2.4 Card ID Switch
The PEX-1002L/H has a Card ID switch (SW1) with which users can recognize the board by the ID via
software when using two or more PEX-1002L/H cards in one computer. The default Card ID is 0x0.
For detail SW1 Card ID settings, refer to Table 2-1. Note that the Card ID function is only supported by
the PEX-1002L/H.
Table 2-1 (*) Default Settings; OFF 1; ON 0
Card ID (Hex)
1
ID0
2
ID1
3
ID2
4
ID3
(*) 0x0
ON
ON
ON
ON
0x1
OFF
ON
ON
ON
0x2
ON
OFF
ON
ON
0x3
OFF
OFF
ON
ON
0x4
ON
ON
OFF
ON
0x5
OFF
ON
OFF
ON
0x6
ON
OFF
OFF
ON
0x7
OFF
OFF
OFF
ON
0x8
ON
ON
ON
OFF
0x9
OFF
ON
ON
OFF
0xA
ON
OFF
ON
OFF
0xB
OFF
OFF
ON
OFF
0xC
ON
ON
OFF
OFF
0xD
OFF
ON
OFF
OFF
0xE
ON
OFF
OFF
OFF
0xF
OFF
OFF
OFF
OFF
(Default Settings)

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 15
2.5 JP2: DI Port Settings (Pull-High/Low)
This DI ports can be pull-high or pull-low that is selected by JP2. The pull-high/low jumpers of the
card allow user to predefine the DI status instead of floating when the DI channels are unconnected
or broken. The configuration is illustrated in the figure below. Note: This function only supports
PEX-1002L/H.
JP2
+5V GND
JP2
+5V GND
Pull-High Pull-Low (Default)
2.6 System Block
PCI-1002 series card system function block.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 16
2.7 AD Input Signal Connection
The PCI-1002 series card can measure either single-ended or differential-type analog input signals.
The user must decide which mode is most suitable for measurement purposes. Please refer to the
Section 2.2 “JP1: AD Input Type Selection”to see how to configure the JP1 jumper based on your
analog input type.
In general, there are four different analog signal connection methods, as shown in Figure 2-3 to
Figure 2-7. The connection shown in Figure 2-3 is suitable for grounded analog input signals. The
connection shown in Figure 2-4 is used to measure more channels than that shown in Figure 2-3,
but is only suitable for large analog input signals. The connection shown in Figure 2-5 is suitable for
thermocouple connections and the connection shown in Figure 2-6 is suitable for floating analog
input signals.
Note: In Figure 2-5, the maximum common mode voltage between the analog input source and the
AGND is 70 Vp-p, so the user must ensure that the input signals is within this specification. If the
common mode voltage is above 70 Vp-p, the input multiplexer will be permanently damaged!
The simplest way to select your input signal connection configuration is listed below.
1. Grounding source input signal

see Figure 2-3
2. Thermocouple input signal

see Figure 2-5
3. Floating source input signal

see Figure 2-6
4. If Vin > 0.1 V, gain<=10 and more channels are needed

see Figure 2-4
5. Current source input signal

seeFigure 2-7
If you are unsure of the characteristics of your input signal, follow these test steps:
Step1: Try and record the measurement results when using Figure 2-3.
Step2: Try and record the measurement results when using Figure 2-6.
Step3: Try and record the measurement results when using Figure 2-4.
Step4: Compare the three results and select the best one.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 17
Figure 2-3: Differential input with grounded source (Right way)
A/D CH0 HI
A/D CH n HI
A/D CHn LO
A.GND n
A/D CH 0 LO
Es 1
Es n
S
S
A.GND 1
Figure 2-3: Wrong way
A/D CH0 HI
A/D CH0 LO
AGND
GND1
Es1
A/D CHn HI
A/D CHn LO
AGND
GNDn
Esn

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 18
Figure 2-4: Single-ended input with floating signal source
A/D CH0
A/D CH1
A/D CH n
AGND
Es
Figure 2-5: Differential input with floating thermocouple signal
A/D CH 0 HI
A. GND
A/D CH n LO
A/D CH n HI
A/D CH 0 LO
Do not join LO to A.GND at the computer
CAUTION: In Figure 2-5, the maximum common mode voltage between the analog input source
and the AGND is 70 Vp-p. Make sure that the input signal is under specification first! If the common
mode voltage is over 70 Vp-p, the input multiplexer will be permanently damaged.
Note: If the input signal is not
thermocouple, the user should
use an oscilloscope to
measure common mode
voltage of Vin before
connecting to PCI-1002 series
card. Don’t use a voltage
meter or multi-meter.

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 19
Figure 2-6: Differential input with floating signal source
A/D CH 0 HI
A/D CH 0 LO
A/D CH n HI
A.GND
A/D CH n LO
A.GND
Es 1
Es n
Figure 2-7: Connecting to a 4 ~ 20 mA Source
AI CHn
AGND
R
+
-
(Shunt Resistor)
Example: A 20 mA source current through a 125 Ω resistor (e.g. 125 Ω, 0.1% DIP Resistors) between
+ and – terminals and the board will read a 2.5 VDC voltage. You can use the I = V/R (Ohm’s law) to
calculate what value the source current should have.
Current (I) = Voltage (V) / Resistance (R)
= 2.5 V / 125 Ω
= 0.02 A
= 20 m