PCI-DAS1602/16
Analog and Digital I/O Board
User’s Guide

Document Revision 7A, March, 2009
© Copyright 2009, Measurement Computing Corporation

Trademark and Copyright Information
Measurement Computing Corporation, InstaCal, Universal Library, and the Measurement Computing logo areeither trademarks or registered trademarks of Measurement Computing Corporation. Refer to the Copyrights &Trademarks section on mccdaq.com/legal for more information about Measurement Computing trademarks.
Other product and company names mentioned herein are trademarks or trade names of their respective
companies.
© 2009 Measurement Computing Corporation. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic, mechanical, by
photocopying, recording, or otherwise without the prior written permission of Measurement Computing
Corporation.
NoticeMeasurement Computing Corporation does not authorize any Measurement Computing Corporation product for
use in life support systems and/or devices without prior written consent from Measurement Computing
Corporation. Life support devices/systems are devices or systems that, a) are intended for surgical implantation
into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result ininjury. Measurement Computing Corporation products are not designed with the components required, and are
not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis ofpeople.

HM PCI-DAS1602_16.doc

2

3

Table of Contents
Preface

About this User's Guide .......................................................................................................................6
What you will learn from this user's guide ......................................................................................................... 6
Conventions in this user's guide ......................................................................................................................... 6
Where to find more information ......................................................................................................................... 6
Chapter 1

Introducing the PCI-DAS1602/16 .........................................................................................................7
Overview: PCI-DAS1602/16 features ................................................................................................................ 7
Software features ................................................................................................................................................ 7
Chapter 2

Installing the PCI-DAS1602/16 .............................................................................................................8
What comes with your PCI-DAS1602/16 shipment? ......................................................................................... 8
Hardware .......................................................................................................................................................................... 8
Additional documentation ................................................................................................................................................. 8
Optional components ........................................................................................................................................................ 8

Unpacking the PCI-DAS1602/16 ....................................................................................................................... 9
Installing the software ........................................................................................................................................ 9
Installing the PCI-DAS1602/16 ......................................................................................................................... 9
Configuring the PCI-DAS1602/16 ..................................................................................................................... 9Connecting the board for I/O operations .......................................................................................................... 10
Connectors, cables – main I/O connector ........................................................................................................................10
Pinout – main I/O connector ............................................................................................................................................11
Cabling.............................................................................................................................................................................12
Field wiring and signal termination .................................................................................................................................13
Chapter 3

Functional Details ...............................................................................................................................15
PCI-DAS1602/16 block diagram ..................................................................................................................... 15
Analog inputs ................................................................................................................................................... 15
Burst mode .......................................................................................................................................................................16

Analog outputs ................................................................................................................................................. 17
Parallel digital I/O ............................................................................................................................................ 17Counter/timer I/O ............................................................................................................................................. 17
Chapter 4

Calibrating the PCI-DAS1602/16 ........................................................................................................18
Analog input calibration ................................................................................................................................... 18
Analog output calibration ................................................................................................................................. 19
Chapter 5

Specifications ......................................................................................................................................20
Analog input ..................................................................................................................................................... 20
Accuracy ..........................................................................................................................................................................21
Analog input drift ............................................................................................................................................................21
Noise performance ...........................................................................................................................................................22
Crosstalk ..........................................................................................................................................................................22

Analog output ................................................................................................................................................... 23
Accuracy ..........................................................................................................................................................................23
Analog output drift ..........................................................................................................................................................23

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PCI-DAS1602/16 User's Guide

Digital input / output ........................................................................................................................................ 24
Interrupts .......................................................................................................................................................... 24
Counter ............................................................................................................................................................. 25
Power consumption .......................................................................................................................................... 25
Environmental .................................................................................................................................................. 26
Mechanical ....................................................................................................................................................... 26
Main connector and pin out .............................................................................................................................. 26
Declaration of Conformity ..................................................................................................................29

5

Preface

About this User's Guide
What you will learn from this user's guideThis user's guide explains how to install, configure, and use the PCI-DAS1602/16 board so that you get themost out of its analog, digital, and timing I/O features.
This user's guide also refers you to related documents available on our web site, and to technical support
resources.

Conventions in this user's guide
For more information on …
Text presented in a box signifies additional information and helpful hints related to the subject matter you arereading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
< : >Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned
to registers, bit settings, etc.

bold text

Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For
example:1. Insert the disk or CD and click the OK button.

italic text

Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. For
example:The InstaCal installation procedure is explained in the Quick Start Guide.
Never touch the exposed pins or circuit connections on the board.

Where to find more information
The following electronic documents provide helpful information relevant to the operation of the PCIDAS1602/16.







MCC's Specifications: PCI-DAS1602/16 (the PDF version of the Specifications chapter in this guide) isavailable on our web site at www.mccdaq.com/pdfs/Specs/PCI-DAS1602-16-spec.pdf.
MCC's Quick Start Guide is available on our web site atwww.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
MCC's Guide to Signal Connections is available on our web site atwww.mccdaq.com/signals/signals.pdf.
MCC's Universal Library User's Guide is available on our web site atwww.mccdaq.com/PDFmanuals/sm-ul-user-guide.pdf.
MCC's Universal Library Function Reference is available on our web site atwww.mccdaq.com/PDFmanuals/sm-ul-functions.pdf.
MCC's Universal Library for LabVIEW™ User’s Guide is available on our web site atwww.mccdaq.com/PDFmanuals/SM-UL-LabVIEW.pdf.

PCI-DAS1602/16 User's Guide (this document) is also available on our web site atwww.mccdaq.com/PDFmanuals/PCI-DAS1602-16.pdf.

6

Chapter 1

Introducing the PCI-DAS1602/16
Overview: PCI-DAS1602/16 features
The PCI-DAS1602/16 multifunction analog and digital I/O board sets a new standard for high performancedata acquisition on the PCI bus. This manual explains how to install and use the PCI-DAS1602/16 board.
The PCI-DAS1602/16 is a multifunction measurement and control board designed for the PCI bus. This board
can be used for applications such as data acquisition, system timing, and industrial process control.
The PCI-DAS1602/16 board is completely plug and play, with no switches, jumpers or potentiometers to set.
All board addresses and interrupt sources are set with software. You calibrate the board with software that uses
programmable on-board digital potentiometers and trim D/A converters.
The PCI-DAS1602/16 provides the following features:







Eight differential or 16 single-ended 16-bit analog inputs
Sample rates of up to 200 kHz
24 bits of high-drive digital I/O
Three 16-bit down counters
100-pin high density I/O connector
Two FIFO buffered 16-bit analog outputs with update rates of up to 100 kHz

Analog input ranges are selectable via software as bipolar or unipolar. Bipolar input ranges are ±10 V, ±5 V,±2.5 V and ±1.25 V. Unipolar input ranges are 0 to 10 V, 0 to 5 V, 0 to 2.5 V and 0 to 1.25 V. The PCIDAS1602/16 has an analog trigger input. The trigger level and direction are software configurable.
The PCI-DAS1602/16 board has two 82C54 counter chips. Each chip contains three 16-bit down counters thatprovide clock, gate, and output connections.

Software features
For information on the features of InstaCal and the other software included with your PCI-DAS1602/16, referto the Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
Check www.mccdaq.com/download.htm for the latest software version.

7

Chapter 2

Installing the PCI-DAS1602/16
What comes with your PCI-DAS1602/16 shipment?
The following items are shipped with the PCI-DAS1602/16.

Hardware

PCI-DAS1602/16

Additional documentation
In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf). This booklet supplies a brief description of
the software you received with your PCI-DAS1602/16 and information regarding installation of that software.
Please read this booklet completely before installing any software or hardware.

Optional components


CablesC100FF-x


Signal termination and conditioning accessories
MCC provides signal conditioning and termination products for use with the PCI-DAS1602/16. Refer toField wiring and signal termination on page 13 for a complete list of compatible accessory products.

8

PCI-DAS1602/16 User's Guide

Installing the PCI-DAS1602/16

Unpacking the PCI-DAS1602/16
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the PCI-DAS1602/16 from its packaging, ground yourself using a wrist strap or bysimply touching the computer chassis or other grounded object to eliminate any stored static charge.
If any components are missing or damaged, notify Measurement Computing Corporation immediately byphone, fax, or e-mail:

Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: techsupport@mccdaq.com

Installing the software
Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data
Acquisition Software CD. This booklet is available in PDF at www.mccdaq.com/PDFmanuals/DAQ-SoftwareQuick-Start.pdf.

Installing the PCI-DAS1602/16
The PCI-DAS1602/16 board is completely plug-and-play, with no switches or jumpers to set. Configuration iscontrolled by your system's BIOS. To install your board, follow the steps below.
Install the MCC DAQ software before you install your board
The driver needed to run your board is installed with the MCC DAQ software. Therefore, you need to install
the MCC DAQ software before you install your board. Refer to the Quick Start Guide for instructions on
installing the software.
1.

Turn your computer off, open it up, and insert your board into an available PCI slot.

2.

Close your computer and turn it on.
If you are using an operating system with support for plug-and-play (such as Windows 2000 or
Windows XP), a dialog box opens as the system loads, indicating that new hardware has been detected. If
the information file for this board is not already loaded onto your PC, you are prompted for the disk
containing this file. The Measurement Computing Data Acquisition Software CD supplied with your board
contains this file. If required, insert the disk or CD and click OK.

3.

To test your installation and configure your board, run the InstaCal utility installed in the previous section.
Refer to the Quick Start Guide that came with your board for information on how to initially set up andload InstaCal.

If your board has been powered-off for more than 10 minutes, allow your computer to warm up for at least
15 minutes before acquiring data with this board. This warm-up period is required for the board to achieve its
rated accuracy. The high speed components used on the board generate heat, and it takes this amount of time
for a board to reach steady state if it has been powered off for more than 10 minutes.

Configuring the PCI-DAS1602/16
All hardware configuration options on the PCI-DAS1602/16 are software controlled. You can select some of
the configuration options using InstaCal, such as the analog input configuration (16 single-ended or eight
differential channels), the edge used for triggering when using an external pacer, and the counter source. Onceselected, any program that uses the Universal Library initializes the hardware according to these selections.

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PCI-DAS1602/16 User's Guide

Installing the PCI-DAS1602/16

Connecting the board for I/O operations
Connectors, cables – main I/O connector
The table below lists the board connectors, applicable cables, and compatible accessory products for the PCIDAS1602/16.
Board connector, cables, and accessory equipment
Connector typeCompatible cables
Compatible accessory
products with the
C100FF-x cable

100-pin high-density Robinson-Nugent
C100FF-x
ISO-RACK16/P
SCB-50
ISO-DA02/P
SSR-RACK24 (DADP-5037 adaptor required)BNC-16SE
SSR-RACK08 (DADP-5037 with TN-MC78M05CT adaptor required)BNC-16DI
CIO-ERB24 (DADP-5037 adaptor required)
CIO-MINI50
CIO-ERB08 (DADP-5037 adaptor required)
CIO-TERM100
CIO-SERB08 (DADP-5037 adaptor required)

The PCI-DAS1602/16 board's main I/O connector is a 100-pin high density connector labeled J1. All signals
pass through this connector. The pinout for eight-channel differential mode is shown on page 11. The pinout for
16-channel single ended mode is shown on page 12.
Information on signal connections
General information regarding signal connection and configuration is available in the Guide to Signal
Connections (available at www.mccdaq.com/signals/signals.pdf).
Caution! When connecting a cable to the board's I/O connector, make sure that the arrow indicating pin 1
on the board connector lines up with the arrow indicating pin 1 on the cable connector.
Connecting cables can damage the board and the I/O controller.

10

PCI-DAS1602/16 User's Guide

Installing the PCI-DAS1602/16

Pinout – main I/O connector
8-channel differential mode pin out
Signal Name
GND
EXTERNAL INTERRUPT
N/C
EXTERNAL D/A PACER GATE
D/A INTERNAL PACER OUTPUT
A/D INTERNAL PACER OUTPUT
N/C
N/C
-12 V
GND
+12 V
GND
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
FIRSTPORTC Bit 7
FIRSTPORTC Bit 6
FIRSTPORTC Bit 5
FIRSTPORTC Bit 4
FIRSTPORTC Bit 3
FIRSTPORTC Bit 2
FIRSTPORTC Bit 1
FIRSTPORTC Bit 0
FIRSTPORTB Bit 7
FIRSTPORTB Bit 6
FIRSTPORTB Bit 5
FIRSTPORTB Bit 4
FIRSTPORTB Bit 3
FIRSTPORTB Bit 2
FIRSTPORTB Bit 1
FIRSTPORTB Bit 0
FIRSTPORTA Bit 7
FIRSTPORTA Bit 6
FIRSTPORTA Bit 5
FIRSTPORTA Bit 4
FIRSTPORTA Bit 3
FIRSTPORTA Bit 2
FIRSTPORTA Bit 1
FIRSTPORTA Bit 0

Pin
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51

PCI slot

■
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■

■
■
■
■
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■
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■
■
■
■
■
■
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■
■
■
■
■
■
■
■
■
■
■

↓

11

Pin
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

Signal NameGND
SSH OUT
PC +5 V
N/C
N/C
A/D EXTERNAL TRIGGER IN
D/A EXTERNAL PACER IN
ANALOG TRIGGER IN
A/D EXTERNAL PACER
CTR 4 OUT
CTR 4 GATECTR 4 CLK
D/A OUT 1
D/A GND 1
D/A OUT 0
D/A GND 0
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
LLGND
CH7 LOCH7 HI
CH6 LOCH6 HI
CH5 LOCH5 HI
CH4 LOCH4 HI
CH3 LOCH3 HI
CH2 LOCH2 HI
CH1 LOCH1 HI
CH0 LO
CH0 HILLGND

PCI-DAS1602/16 User's Guide

Installing the PCI-DAS1602/16

16-channel single-ended mode pin out
Signal Name
GND
EXTERNAL INTERRUPT
N/C
EXTERNAL D/A PACER GATE
D/A INTERNAL PACER OUTPUT
A/D INTERNAL PACER OUTPUT
N/C
N/C
-12 V
GND
+12 V
GND
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
FIRSTPORTC Bit 7
FIRSTPORTC Bit 6
FIRSTPORTC Bit 5
FIRSTPORTC Bit 4
FIRSTPORTC Bit 3
FIRSTPORTC Bit 2
FIRSTPORTC Bit 1
FIRSTPORTC Bit 0
FIRSTPORTB Bit 7
FIRSTPORTB Bit 6
FIRSTPORTB Bit 5
FIRSTPORTB Bit 4
FIRSTPORTB Bit 3
FIRSTPORTB Bit 2
FIRSTPORTB Bit 1
FIRSTPORTB Bit 0
FIRSTPORTA Bit 7
FIRSTPORTA Bit 6
FIRSTPORTA Bit 5
FIRSTPORTA Bit 4
FIRSTPORTA Bit 3
FIRSTPORTA Bit 2
FIRSTPORTA Bit 1
FIRSTPORTA Bit 0

Pin
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51

PCI slot

■
■
■
■
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■

■
■
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■
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■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■

Pin
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

Signal NameGND
SSH OUT
PC +5 V
N/C
N/C
A/D EXTERNAL TRIGGER IN
D/A EXTERNAL PACER IN
ANALOG TRIGGER IN
A/D EXTERNAL PACER
CTR 4 OUT
CTR 4 GATECTR 4 CLK
D/A OUT 1
D/A GND 1
D/A OUT 0
D/A GND 0
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
LLGND
CH15 HI
CH7 HI
CH14 HICH6 HI
CH13 HICH5 HI
CH12 HI
CH4 HI
CH11 HI
CH3 HI
CH10 HICH2 HI
CH9 HICH1 HI
CH8 HI
CH0 HI
LLGND↓The signal names for pins 2 to 17 define the functions for both single-ended modes and also for differential
input modes. For example, if you are using eight differential inputs, pin 2 is the high side of channel 0 (CH0
HI) and pin 3 is the low side (CH0 LO) of channel 0. If you are using single-ended inputs, pin 2 is channel 0(CH0 HI), but pin 3 is now channel 8 (CH8 HI). When you use single-ended inputs, use LLGND (and notGND) for analog signal returns.

Cabling
You can use a C100FF-x cable to connect signals to the PCI-DAS1602/16 board. The C100FF-x cable is madeup of two 50-pin ribbon cables that are joined at one end with a 100-pin connector. The two 50-pin cables
diverge and are terminated at the other end with standard 50-pin header connectors.

12

PCI-DAS1602/16 User's Guide

Installing the PCI-DAS1602/16

Cable is labeled“Pins 1-50”

49

50

1

2

Key
50

100

The red stripe
identifies pin # 1

99 100Field Wiring connections:
SCB-50
CIO-MINI50
CIO-MINI50/DST
CIO-TERM100/DST
BNC-16DI or BNC-16SE
ISO-RACK16/P or ISO-DA02/P
with the DADP-5037 adaptor board:
CIO-ERB08 or CIO-ERB24
SSR-RACK08 or SSR-RACK24

1

51

Key

Connect to the board’s
100-pin I/O connector.
Pin 1 is indicated by anarrow  on the connector.

51

52

Cable is labeled“Pins 51-100”
The red stripe
identifies pin # 51

Figure 1. C100FF-x cable

The first 50-pin connector is used primarily for analog signals (pins 1-50 on the 100-pin connector). The
second 50-pin connector is used primarily for digital signals (pins 51-100 on the 100-pin connector). Thisconfiguration minimizes noise in the analog signal lines, and greatly simplifies field wiring and connections toexternal devices. You can purchase C100FF-x series cables from our web site atwww.mccdaq.com/products/accessories.aspx.

Field wiring and signal termination
You can use the following MCC screw terminal boards to terminate field signals and route them into the PCIDAS1602/16 board using the C100FF-x cable:
Screw terminal boards

CIO-TERM100 – 100 pin, 16 x 4 screw terminal board.
CIO-MINI50 – 50-pin universal screw terminal accessory. Two boards are required.
SCB-50 – 50-conductor, shielded signal connection/screw terminal box providing two independent 50-pin
connections. One box is required.

Details on these products are available at www.mccdaq.com/products/screw_terminal_bnc.aspx.
BNC connector interface boxes

BNC-16SE – 16-channel single-ended BNC connector box.
BNC-16DI – Eight-channel differential BNC connector box.

Details on these products are available at www.mccdaq.com/products/screw_terminal_bnc.aspx.

13

PCI-DAS1602/16 User's Guide

Installing the PCI-DAS1602/16

Analog signal conditioning and expansion


ISO-RACK16/P – 16-channel isolation module mounting rack.
ISO-DA02/P – Two-channel, 5B module rack.

Details on these products are available at www.mccdaq.com/products/signal_conditioning.aspx.
Digital signal conditioning
The following digital signal conditioning products have 37-pin connectors. Use the DADP-5037 adaptor board
for connections to the C100FF-x cable's 50-pin connectors.
SSR-RACK24 – 24-position solid state relay rack. The DADP-5037 adaptor board is required.
SSR-RACK08 – Eight-channel solid state relay rack. The DADP-5037 with TN-MC78M05CT adaptor
board is required.
CIO-ERB24 – 24-channel electromechanical relay accessory for digital I/O boards. The DADP-5037
adaptor board is required.
CIO-ERB08 – Eight-channel electromechanical relay accessory for digital I/O boards. The DADP-5037
adaptor board is required.

Details on digital signal conditioning products are available atwww.mccdaq.com/products/signal_conditioning.aspx. Details on the DADP-5037 adapter board are availableat www.mccdaq.com/products/accessories.aspx.
Caution! Before connecting signals to the PCI-DAS1602/16, measure the voltage between ground at thesignal source and ground at the PC. If you measure >10 volts, do not connect the board to thissignal source, as you are beyond the usable input range of the board. Either adjust your grounding
system or add isolation signal conditioning to take useful measurements. A ground offset voltageof more than 30 volts may damage the board and possibly your computer. An offset voltage muchgreater than 30 volts will damage your electronics, and may be hazardous to your health.
To terminate signals and route them into the PCI-DAS1602/16, use the SCB-50 signal connection box,
CIO-TERM100 screw terminal board, or two CIO-MINI50 screw terminal boards.

PCI-DAS1602/16
100-pin I/O connector

C100FF-x

Analog I/O pins
1 to 50IN
SCB-50, CIO-MINI50,
CIO-TERM100 or
analog signal conditioning
Digital I/O pins
51 to 100IN
SCB-50, CIO-MINI50,
CIO-TERM100 ordigital signal conditioning

Figure 2. Sample wiring configuration using the C100FF-x cable14Chapter 3

Functional Details
PCI-DAS1602/16 block diagram
The PCI-DAS1602/16 provides the following features:

16 single-ended or eight fully differential 16-bit analog inputs
Two 16-bit analog outputs
24-bits, high current digital I/O
Three 16-bit down counters

PCI-DAS1602/16 functions are illustrated in the block diagram shown here.
Gain and Offset Autocal

Gain and Offset Autocal

DAC0
Analog In
16 CH S.E.
8 CH DIFF.

Mux
&
Gain

16-Bit, 200KHz
Start EOC

512 x 16
FIFO

512 X 16
FIFO

INT

INT

DAC
Data
Control

D/A 0

16-Bit, 100KHz
DAC1
D/A 1

Burst/Scan
16-Bit, 100KHz

Control

ADC
Pacer
CTR 2
CTR 1
SampleCounter
CTR0

CONTROLLER
FPGA

INT

XTRIG
TRIG_HI
Analog
Trigger
TRIG_LO

Analog
Trigger
Logic

Scan
&
Burst
Logic

Trigger
Control

HS
DAC
Control

DAC PacerControl

Decode/Status

Int
Ctl

DAC
Pacer
CTR2
CTR1

EXT
PCR

INT
XTRIG

10MHz
INT
XINT

Time BaseBus
TimingFIRSTPORTB (7:0)

FIRSTPORTBFIRSTPORTCH (3:0)
FIRSTPORTCL (3:0)

FIRSTPORTCH

8

Control

FIRSTPORTA

GATE
CLK
OUT

LOCAL BUS

High-Drive DIO
FIRSTPORTA (7:0)

10MHz

ADC
Index
Counter
User
CTR 0Control

ADC
Pacer
Control

Boot
EEPROM

PCI
CONTROLLER

BADR1
BADR2
BADR3
BADR4
Interrupt

FIRSTPORTCL

PCI BUS (5V, 32-BIT, 33MHZ)

Figure 3. PCI-DAS1602/16 functional block diagram

Analog inputs
The analog input mode is software-selectable for eight differential or 16 single-ended analog inputs. The board
offers a 200 kHz maximum sample rate in single and multichannel scans at any gain setting. A 512 sample
FIFO assures that data taken from the board is transferred into computer memory without the possibility of
missed samples. The board has an analog trigger input with software-selectable trigger levels and direction.

15

PCI-DAS1602/16 User's Guide

Functional Details

Software selects the bipolar/unipolar input configuration and input range. The table below lists the analog input
ranges and resolutions for the available input configurations and gains.
Input range and resolution
Bipolar Range

Resolution

Unipolar Range

Resolution

±10 V
±5 V
±2.5 V±1.25 V305 µV
153 µV
76.3 µV
38.1 µV

0 to 10 V
0 to 5 V
0 to 2.5 V
0 to 1.25 V

153 µV
76.3 µV
38.1 µV
19.1 µV

Burst mode
Channel-to-channel skew results from multiplexing the A/D inputs. It is defined as the time between
consecutive samples. For example, if four channels are sampled at a rate of 1 kHz per channel, the channel
skew is 250 µs (1 ms/4).
Burst mode minimizes channel-to-channel skew by clocking the A/D at the maximum rate between successive
channels. Burst mode timing is illustrated in Figure 4. At the 1-ms pulse, channel 0 is sampled. After 5 µs,channel 2 is sampled. Channel 3 is sampled 5 µs after channel 2 is sampled. No samples are then taken until thenext 1-ms pulse, when channel 0 is sampled again. In this mode, the rate for all channels is 1 kHz, but thechannel-to-channel skew (delay) is now 5 µs, or 20 µs total. The minimum burst mode skew/delay on the PCIDAS1602/16 is 5 µs.
CH0

CH1 CH2 CH3CH0 CH1 CH2

CH3

5µS
Delay

Burst mode pacer isfixed at 5.0 µS

The length of the delay between bursts is
set by one of the internal counters, or may
be controlled via the external trigger.
Figure 4. Burst mode timing

16

PCI-DAS1602/16 User's Guide

Functional Details

Analog outputs
The two high-speed 16-bit dual analog outputs are updated via an on-board FIFO and REP OUTSW
commands, and provide a 100 kHz maximum update rate. Output ranges are individually configurable with
software for ±10 V and ±5 V, 0 to 10 V and 0 to 5 V. The D/A outputs provide rated accuracy to ±5 mA, andare short circuit protected (25 mA limit). The analog outputs are cleared to 0 V on power up or reset.

Parallel digital I/O
The 24 bits of TTL-compatible, high-current (64 mA sink, 15 mA source) digital I/O are available as two eightbit ports and two four-bit ports. This digital capability is an 82C55 mode 0 chip emulation, which allows eachport to be configured independently as either input or output. The digital I/O ports default to the input state(high impedance) on power up or reset.

Counter/timer I/O
The PCI-DAS1602/16 provides two counter 82C54 counter chips. Each chip contains three 16-bit down
counters that provide clock, gate, and output connections. You can connect the counter clock to the on-board
10 MHz crystal oscillator, or leave unconnected for user input.

17Chapter 4

Calibrating the PCI-DAS1602/16
The PCI-DAS1602/16 is equipped with software auto calibration. The InstaCal software makes gain and offset
corrections to the board using on-board digital potentiometers and trim D/A converters. No user intervention or
external equipment is required. The PCI-DAS1602/16 is shipped fully-calibrated from the factory.
All adjustments are made via 8-bit calibration DACs or 7-bit digital potentiometers that are referenced to an onboard factory calibrated standard. Calibration factors are stored on the serial nvRAM. At run time, thesecalibration factors can be loaded into system memory and can be automatically retrieved when a different
DAC/ADC range is specified
You can recalibrate with respect to the factory-measured voltage standards at any time by selecting theCalibrate menu in InstaCal. Full calibration requires less than two minutes and requires no external equipment
or user adjustments.
The standard calibration involves calibrating one channel with 0 volts input (offset), and then with a known
input voltage (gain). The PCI-DAS1602/16's on board circuitry first shorts the inputs for offset calibration, thenconnects the inputs to the ultra-stable precision voltage reference for the gain calibration.

Analog input calibration
Analog inputs are calibrated for offset and gain. Offset calibration is performed directly on the input amplifier
with trim DACs acting on the amplifier. Input gain calibration is performed with the precision voltage
reference.
Front-end offset corrections are typically performed at the gain stage and/or the ADC input. Offset calibrationis performed in the instrumentation amplifier gain stage. Front-end gain adjustment is only performed via the
ADC reference, since the gain tolerance of the in-amp circuit is quite good, and there is adequate gain tuning
range using only the ADC.
The analog input calibration system is shown in Figure 5.

Analog In
ADC

Calibration
Reference

OffsetAdjustOffsetAdjustRef.

Unipolar/
Bipolar
Digital Offset
Pot.

Trim DAC

Figure 5. Analog input calibration

18

Digital Gain
Pot.

PCI-DAS1602/16 User's Guide

Calibrating the PCI-DAS1602/16

Analog output calibration
The analog output circuits are calibrated for both gain and offset. Offset adjustments for the analog outputs are
made in the output buffer section. The tuning range of this adjustment allows for maximum DAC and output
buffer offsets. Gain calibration of the analog outputs is performed via DAC reference adjustments.
The analog output calibration system is shown in Figure 6. This circuit is duplicated for both DAC0 and DAC1.

Analog Out

D/A
Ref

Trim DAC
CoarseTrim DAC
Fine

Gain
AdjustTrim DAC
CoarseOffsetAdjustTrim DAC
Fine

Figure 6. Analog output calibration

19

Chapter 5

Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
All specifications are subject to change without notice.

Analog input
Table 1. Analog input specifications
A/D converter type
Resolution
Number of channels
Input ranges, software
selectable
Polarity
A/D pacing(software programmable)
Burst mode
A/D trigger sources
A/D triggering modes

Data transfer

A/D conversion timeThroughput
Calibration
Common mode range
CMRR @ 60 Hz
Input leakage current
Input impedance
Absolute maximum input
voltage

AD976ABN
16 bits
16 single-ended / 8 differential, software selectable±10 V, ±5 V, ±2.5 V, ±1.25 V
0 to 10 V, 0 to 5 V, 0 to 2.5 V, 0 to 1.25 V
Unipolar/bipolar, software selectable
Internal counter - 82C54.
External source (A/D EXTERNAL PACER)
Software polled
Software selectable option, rate = 5 µs
External digital (A/D EXTERNAL TRIGGER)
External analog (ANALOG TRIGGER IN)
External digital: Software configurable for:
 Edge (triggered) Level-activated (gated) Programmable polarity (rising/falling edge trigger, high/low gate)
External analog: software-configurable for:
 Positive or negative slope.
 Above or below reference Positive or negative hysteresis
 In or out of window
Trigger levels set by DAC0 and/or DAC1, 4.88 mV resolution.
Unlimited pre- and post-trigger samples. Total # of samples must be > 256. Compatible
with both Digital and Analog trigger options.
From 512 sample FIFO via interrupt w/ REPINSWInterrupt
Software polled
5 µs max
200 kHz
Auto-calibration, calibration factors for each range stored on board in non-volatile RAM.
±10 V min-70 dB±200 nA max
10 MΩ min
±15 V

20

PCI-DAS1602/16 User's Guide

Specifications

Accuracy
Table 2. Analog input accuracy specifications
Range

Accuracy

BIP10
BIP5
BIP2.5
BIP1.25
UNI10
UNI5
UNI2.5
UNI1.25±16 LSB±6 LSB±16 LSB±16 LSB±8 LSB±28 LSB±28 LSB±28 LSB

Accuracy Components
Gain error
Offset error
PGA linearity error
Integral linearity error
Differential linearity error

Trimmable by potentiometer to 0
Trimmable by potentiometer to 0
±1.3 LSB typ , ±10.0 LSB max±0.5 LSB typ , ±3.0 LSB max±0.5 LSB typ, ±2.0 LSB max

Total board error is a combination of gain, offset, differential linearity and integral linearity error. The
theoretical absolute accuracy of the board may be calculated by summing these component errors. Worst caseerror is realized only in the unlikely event that each of the component errors is at their maximum level, andcausing error in the same direction.

Analog input drift
Table 3. Analog input drift specifications
Range

Analog input full-scale
gain drift

Analog input zero drift

Overall analog input drift± 10.00 V± 5.000 V± 2.500 V± 1.250 V
0 - 10.00 V
0 - 5.000 V
0 - 2.500 V
0 - 1.250 V

2.2 LSB/°C max
2.2 LSB/°C max
2.2 LSB/°C max
2.2 LSB/°C max
4.1 LSB/°C max
4.1 LSB/°C max
4.1 LSB/°C max
4.1 LSB/°C max

1.8 LSB/°C max
1.9 LSB/°C max
2.0 LSB/°C max
2.3 LSB/°C max
1.9 LSB/°C max
2.1 LSB/°C max
2.4 LSB/°C max
3.0 LSB/°C max

4.0 LSB/°C max
4.1 LSB/°C max
4.2 LSB/°C max
4.5 LSB/°C max
6.0 LSB/°C max
6.2 LSB/°C max
6.5 LSB/°C max
7.1 LSB/°C max

Absolute error change per °C temperature change is a combination of the Gain and Offset drift of many
components. The theoretical worst case error of the board may be calculated by summing these component
errors. Worst case error is realized only in the unlikely event that each of the component errors is at theirmaximum level, and causing error in the same direction.

21

PCI-DAS1602/16 User's Guide

Specifications

Noise performance
The following table summarizes the worst case noise performance for the PCI-DAS1602/16. Noise distribution
is determined by gathering 50000 samples with inputs tied to ground at the PCI-DAS1602/16 main connector.
Data is for both single-ended and differential modes of operation.
Table 4. Noise specifications
Range±2 counts±1 count

Max Counts

LSBrms*± 10.00 V± 5.000 V± 2.500 V± 1.250 V
0 - 10.00 V
0 - 5.000 V
0 - 2.500 V
0 - 1.250 V

97%
97%
96%
96%
88%
88%
83%
83%

80%
80%
79%
79%
65%
65%
61%
61%

11
11
11
11
15
15
15
16

1.7
1.7
1.7
1.7
2.3
2.3
2.3
2.4

* Input noise is assumed to be Gaussian. An RMS noise value from a Gaussian distribution is calculated by
dividing the peak-to-peak bin spread by 6.6.

Crosstalk
Crosstalk is defined here as the influence of one channel upon another when scanning two channels at the
specified per channel rate for a total of 50000 samples. A full scale 100 Hz triangle wave is input on channel 1.
Channel 0 is tied to analog ground at the 100-pin user connector. Table 5 summarizes the influence of channel
1 on channel 0 and does not include the effects of noise.
Table 5. Crosstalk specifications
Range

1 kHz Crosstalk(LSB pk-pk)

10 kHz Crosstalk(LSB pk-pk)

50 kHz Crosstalk(LSB pk-pk)±10.000 V±5.000 V±2.500 V±1.250 V
0V to +10.000 V
0V to +5.000 V
0V to +2.500 V
0V to +1.250 V

4
2
2
3
4
2
2
3

13
7
5
4
8
5
4
3

24
18
16
14
23
16
16
16

22

PCI-DAS1602/16 User's Guide

Specifications

Analog output
Table 6. Analog output specifications
D/A converter type
Resolution
Number of channels
Channel typeOutput range (each channel independently
software selectable)
Data transfer
Throughput
Monotonicity
Slew rate
Settling time
Current drive
Output short-circuit duration
Output coupling
Output impedance
Output stability
CodingOutput voltage on power up and reset

AD669BR
16 bits2
Single-ended voltage output±10 V, ±5 V, 0 to 10 V, or 0 to 5 V
From 512 sample FIFO via REPOUTSW or programmed I/O. Datainterleaved for dual analog output mode.
100 kHz, 2 channels simultaneous
16 bits at 25 °C
10 V ranges: 6 V/µs
5 V ranges: 3 V/µs
13 µS max 20 V step to 0.0008%
6 µS typ 10V step to 0.0008%±5 mA minIndefinite @ 25 mA
DC
0.1 ohms max
Any passive load
Offset binary
0 V ± 10 mV

Accuracy
Table 7. Analog output accuracy specifications
Range

Accuracy

BIP10
BIP5
UNI10
UNI5

±8 LSB±8 LSB±10 LSB±10 LSB

Accuracy Components
Integral linearity error
Differential linearity error±0.5 LSB typ, ±1 LSB max±0.5 LSB typ, ±1 LSB max

Analog output drift
Table 8. Analog output drift specifications
Analog output full-scale gain drift
Analog output zero drift
Overall analog output drift±0.22 LSB/°C max±0.22 LSB/°C max±0.44 LSB/°C max

Absolute error change per °C temperature change is a combination of the gain and offset drift of many
components. The theoretical worst case error of the board may be calculated by summing these component
errors. Worst case error is realized only in the unlikely event that each of the component errors is at theirmaximum level, and causing error in the same direction.

23

PCI-DAS1602/16 User's Guide

Specifications

Digital input / output
Table 9. Digital input/output specifications
Digital type

Number of I/O
Configuration

Input highInput low
Output highOutput low
Power-up / reset state
Pull-up/pull-down resistors
Simultaneous sample and hold trigger

82C55 emulation
Input 74LS244
Output 74LS373
24
2 banks of 8 and 2 banks of 4, or
3 banks of 8, or
2 banks of 8 with handshake
2.0 volts min, 7 volts absolute max
0.8 volts max, -0.5 volts absolute min
2.4 volts min @ -15 mA
0.5 volts max @ 64 mA
Input mode (high impedance)
Provisions have been made on the board for user installed pull-up/pulldown resistor networks
TTL output (SSH OUT).
Logic 0 = Hold
Logic 1 = Sample compatible with CIO-SSH16

Interrupts
Table 10. Interrupt specifications
Interrupt
Interrupt enable
Interrupt polarity
Interrupt sources(software programmable)

INTA# - mapped to IRQn via PCI BIOS at boot-time
Programmable through PLX9052
Active high level or active low level, programmable through PLX9052
External (rising TTL edge event)
Residual counter
A/D End-of-conversion
A/D End-of-channel-scan
A/D FIFO-not-empty
A/D FIFO-half-full
D/A FIFO-not-empty
D/A FIFO-half-full24

PCI-DAS1602/16 User's Guide

Specifications

Counter*Note: Pins 21, 24, and 25 are pulled to logic high via 10K resistors.
Table 11. Counter specifications
Counter type
Configuration

82C54
Two 82C54 chips containing three 16-bit down counters each

82C54A:Counter 0 — ADC residual sample
counter.
Counter 1 — ADC pacer lower
dividerCounter 2 — ADC pacer upperdivider

Source:Gate:
Output:Source:Gate:
Output:Source:Gate:
Output:

ADC Clock.
Programmable source.
End-of-Acquisition interrupt.
10 MHz oscillator
Tied to Counter 2 gate, programmable source.
Chained to Counter 2 Clock.
Counter 1 Output.
Tied to Counter 1 gate, programmable source.
ADC Pacer clock (if software selected), available at user
connector.

Source:Gate:
Output:Source:

ADC Clock.
External trigger
End-of-Acquisition interrupt.
User input at 100pin connector or internal 10MHz (software
selectable)
User input at 100pin connector.
Available at 100pin connector.
10 MHz oscillator
Tied to Counter 2 gate, programmable source.
Chained to Counter 2 Clock.
Counter 1 Output.
Tied to Counter 1 gate, programmable source.
DAC Pacer clock, available at user connector.

82C54B:Counter 0 — pretrigger mode

Counter 0 — non-pretrigger mode:
user counter 4Counter 1 — DAC pacer lower
dividerCounter 2 — DAC pacer upperdivider
Clock input frequency
High pulse width (clock input)
Low pulse width (clock input)
Gate width highGate width low
Input highInput low
Output highOutput low
Crystal oscillator frequency
Frequency accuracy

Gate:
Output:Source:Gate:
Output:Source:Gate:
Output:10 MHz max
30 ns min
50 ns min
50 ns min
50 ns min
2.0 volts min, 5.5 volts absolute max
0.8 volts max, -0.5 volts absolute min
3.0 volts min @ -2.5 mA
0.4 volts max @ 2.5 mA
10 MHz
50 ppmPower consumption
Table 12. Power consumption specifications+5 V operating (A/D converting to FIFO)

2 A typical, 2.1 A max

25

PCI-DAS1602/16 User's Guide

Specifications

Environmental
Table 13. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 70 °C-40 to 100 °C
0 to 95% non-condensing

Mechanical
Table 14. Mechanical specifications
Card dimensions

PCI custom type card: 107 mm (H) x 18.5 mm (W) x 292 mm (L)Main connector and pin out
Table 15. Main connector specifications
Connector typeCompatible cables
Compatible accessory products(with C100FF-x cable)

100-pin high-density, Robinson-Nugent
C100FF-x
ISO-RACK16/P
ISO-DA02/P
BNC-16SE
BNC-16DI
CIO-MINI50
CIO-TERM100
SCB-50SSR-RACK24 (DADP-5037 adaptor required)
SSR-RACK08 (DADP-5037 adaptor required)
CIO-ERB24 (DADP-5037 adaptor required)
CIO-ERB08 (DADP-5037 adaptor required)26

PCI-DAS1602/16 User's Guide

Specifications

Table 16. 8-channel differential mode
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Signal Name
LLGND
CH0 HI
CH0 LOCH1 HI
CH1 LOCH2 HI
CH2 LOCH3 HI
CH3 LOCH4 HI
CH4 LOCH5 HI
CH5 LOCH6 HI
CH6 LOCH7 HI
CH7 LO
LLGND
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
D/A GND 0
D/A OUT 0
D/A GND 1
D/A OUT 1
CTR4 CLK
CTR4 GATECTR4 OUT
A/D EXTERNAL PACER
ANALOG TRIGGER IN
D/A EXTERNAL PACER IN
A/D EXTERNAL TRIGGER IN
N/C
N/C
PC +5VSSH OUT
GND

Pin
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100

27

Signal Name
FIRSTPORTA Bit 0
FIRSTPORTA Bit 1
FIRSTPORTA Bit 2
FIRSTPORTA Bit 3
FIRSTPORTA Bit 4
FIRSTPORTA Bit 5
FIRSTPORTA Bit 6
FIRSTPORTA Bit 7
FIRSTPORTB Bit 0
FIRSTPORTB Bit 1
FIRSTPORTB Bit 2
FIRSTPORTB Bit 3
FIRSTPORTB Bit 4
FIRSTPORTB Bit 5
FIRSTPORTB Bit 6
FIRSTPORTB Bit 7
FIRSTPORTC Bit 0
FIRSTPORTC Bit 1
FIRSTPORTC Bit 2
FIRSTPORTC Bit 3
FIRSTPORTC Bit 4
FIRSTPORTC Bit 5
FIRSTPORTC Bit 6
FIRSTPORTC Bit 7
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
GND
+12V
GND
-12V
N/C
N/C
A/D INTERNAL PACER OUTPUT
D/A INTERNAL PACER OUTPUT
EXTERNAL D/A PACER GATE
N/C
EXTERNAL INTERRUPT
GND

PCI-DAS1602/16 User's Guide

Specifications

Table 17. 16-channel single-ended mode
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Signal Name
LLGND
CH0 HI
CH8 HICH1 HI
CH9 HICH2 HI
CH10 HI
CH3 HI
CH11 HI
CH4 HI
CH12 HICH5 HI
CH13 HICH6 HI
CH14 HI
CH7 HI
CH15 HI
LLGND
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
D/A GND 0
D/A OUT 0
D/A GND 1
D/A OUT 1
CTR4 CLK
CTR4 GATECTR4 OUT
A/D EXTERNAL PACER
ANALOG TRIGGER IN
D/A EXTERNAL PACER IN
A/D EXTERNAL TRIGGER IN
N/C
N/C
PC +5VSSH OUT
GND

Pin
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100

28

Signal Name
FIRSTPORTA Bit 0
FIRSTPORTA Bit 1
FIRSTPORTA Bit 2
FIRSTPORTA Bit 3
FIRSTPORTA Bit 4
FIRSTPORTA Bit 5
FIRSTPORTA Bit 6
FIRSTPORTA Bit 7
FIRSTPORTB Bit 0
FIRSTPORTB Bit 1
FIRSTPORTB Bit 2
FIRSTPORTB Bit 3
FIRSTPORTB Bit 4
FIRSTPORTB Bit 5
FIRSTPORTB Bit 6
FIRSTPORTB Bit 7
FIRSTPORTC Bit 0
FIRSTPORTC Bit 1
FIRSTPORTC Bit 2
FIRSTPORTC Bit 3
FIRSTPORTC Bit 4
FIRSTPORTC Bit 5
FIRSTPORTC Bit 6
FIRSTPORTC Bit 7
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
GND
+12V
GND
-12V
N/C
N/C
A/D INTERNAL PACER OUTPUT
D/A INTERNAL PACER OUTPUT
EXTERNAL D/A PACER GATE
N/C
EXTERNAL INTERRUPT
GND

Declaration of Conformity
Manufacturer:
Address:

Category:

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, MA 02766
USA

Information technology equipment.

Measurement Computing Corporation declares under sole responsibility that the product

PCI-DAS1602/16
to which this declaration relates is in conformity with the relevant provisions of the following standards orother documents:
EC EMC Directive 2004/108/EC: Electromagnetic Compatibility, EN 61326-1:2006 (IEC 61326-1:2005)
Emissions: Group 1, Class B


EN55022 (1995)/CISPR 22: Radiated and Conducted emissions.

Immunity: EN61326-1:2006, (IEC 61326-1:2005)







EN61000-4-2 (2001): Electrostatic Discharge immunity.
EN61000-4-3 (2002): Radiated Electromagnetic Field immunity.
EN61000-4-4 (2004): Electric Fast Transient Burst immunity.
EN61000-4-5 (2001): Surge immunity.
EN61000-4-6 (2003): Radio Frequency Common Mode immunity.
EN61000-4-11 (2004): Voltage Dip and Interrupt immunity.

Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
September, 2001. Test records are outlined in Chomerics Test Report #EMI3053.01. Further testing was
conducted by Chomerics Test Services, Woburn, MA. 01801, USA in December, 2008. Test records are
outlined in Chomerics Test report #EMI5241.08.
We hereby declare that the equipment specified conforms to the above Directives and Standards.

Carl Haapaoja, Director of Quality Assurance

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com