Intelligent instrumentation UDAS-1001E Series, UDAS-1001E-1, UDAS-1001E-1G, UDAS-1001E-2, UDAS-1001E-2G User Manual

INNOVATIVE PC Data Acquisition Solutions

UDAS-1001E Series

Hardware User Manual

for the

Multifunction Data Acquisition System

855M495 1.0

Copyright 2000 by Intelligent Instrumentation Inc., Tucson, Arizona, USA
All rights reserved.

Warranty and Repair Policy Statement Warranty and Repair Policy Statement

General

Seller warrants that its products furnished hereunder will, at the time of delivery, be free from
defects in material and workmanship and will conform to Seller's published specifications
applicable at the time of sale. Seller's obligation or liability to Buyer for products which do not
conform to above stated warranty shall be limited to Seller, at Seller's sole discretion, either
repairing the product, replacing the product with a like or similar product, or refunding the
purchase price of the nonconforming product, provided that written notice of said nonconformance
is received by Seller within the time periods set forth below:

a. For all software products, including licensed programs, ninety (90) days from date of

initial delivery to Buyer;

b. For all hardware products, including complete systems, one year from date of initial

delivery to Buyer, subject to the additional conditions of paragraphs c) and d) below;

c. In the event that Buyer's returned product is a Discontinued product and is irrepara-

ble for any reason, Seller may elect to replace it with like or similar product that is, in
Seller's sole judgment, the closest equivalent to the returned product. Seller does not
warrant that such replacement product will be an exact functional replacement of the
returned product.

Further, all products warranted hereunder for which Seller has received timely notice of
nonconformance must be returned FOB Seller's plant no later than thirty (30) days after the
expiration of the warranty periods set forth above.

These warranties provided herein shall not apply to any products which Seller determines have
been subjected, by Buyer or others, to operating and/or environmental conditions in excess of the
limits established in Seller's published specifications or otherwise have been the subject of
mishandling, misuse, neglect, improper testing, repair, alteration or damage. THESE
WARRANTIES EXTEND TO BUYER ONLY AND NOT TO BUYER'S CUSTOMERS OR USERS
OF BUYER'S PRODUCT AND ARE IN LIEU OF ALL OTHER WARRANTIES WHETHER
EXPRESS, IMPLIED OR STATUTORY INCLUDING IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
SELLER BE LIABLE FOR INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES.
Seller's liability for any claim of any kind shall in no case exceed the obligation or liability
specified in this Warranty clause.

Technical Assistance and ServiceTechnical Assistance and Service

Seller's warranty as herein set forth shall not be enlarged, diminished or affected by, and no
obligation or liability shall arise or grow out of, Seller's rendering of technical advice, facilities or
service in connection with Buyer's order of the goods furnished hereunder. Products returned for
warranty service, but which are found to be fully functional and in conformance with
specifications may be subject to a nominal service charge and return freight charges. Periodic re­calibration of products, if required, is the responsibility of Buyer and is not provided under this
Warranty.

Online Support

If errors persist after repeatedly checking the unit as described in the UDAS-1001E Series
Hardware User Manual , check the technical support links on Intelligent Instrumentation’s 24-

hour World Wide Web site at http:// www.instrument.com. The site contains information on
Intelligent Instrumentation’s products, new developments, announcements, application notes,
application examples, and other useful information. The site and support areas continue to grow
as new products, updates, and features are added.

Email Support

Intelligent Instrumentation’s technical support can be reached via email. When sending an email
message, be sure to include complete contact information as well as a detailed description of the
products being used and the problem. Use the following addresses to contact the support group:

North American Customers International Customers

[e-mail] [e-mail]
[e-mail] [e-mail]

In France:[e-mail]
In Italy: [e-mail]
In Germany: [e-mail]

Static SensitivityStatic Sensitivity

Seller ships all static-susceptible products in anti-static packages. Seller's Warranty as herein set
forth shall not cover warranty repair or replacement for products damaged by static due to
Buyer's failure to use proper protective procedures when handling, storing, or installing products.

TrademarksTrademarks

U-LinkSoftware Libraries is a trademark of Intelligent Instrumentation Incorporated.
VisualDesigner is a registered trademark of Intelligent Instrumentation Incorporated.
LabVIEW is a registered trademark of National Instruments Corporation.
Windows 98 is a registered trademark of Microsoft Corporation in the U.S.A. and other

countries.
Other products or brand names are trademarks or registered trademarks of their respective

companies.

Use of EquipmentUse of Equipment

Intelligent Instrumentation Inc., assumes no responsibility for any direct, indirect or
consequential loss or damages resulting from misuse of the equipment or for improper or
inadequate maintenance of the equipment or for any such damage or loss resulting from the use
of other equipment, attachments, accessories, and repairs at any time made to or placed upon the
equipment or any replacement thereof. Furthermore, Intelligent Instrumentation Inc., makes no
representations or warranties, either expressed or implied, in connection with the use of the
equipment in the event it is improperly used, repaired or maintained.

FCC Radio Frequency Interference StatementFCC Radio Frequency Interference Statement

This equipment generates and uses radio frequency energy, and may cause interference to radio
or television reception.

Per FCC rules, Part 15, Subpart J, operation of this equipment is subject to the conditions that no
harmful interference is caused and that interference must be accepted that may be caused by
other incidental or restricted radiation devices, industrial, scientific or medical equipment, or
from any authorized radio user.

The operator of a computing device may be required to stop operating his device upon a finding
that the device is causing harmful interference and it is in the public interest to stop operation
until the interference problem has been corrected.

The user of this equipment is responsible for any interference to radio or television reception
caused by the equipment. It is the responsibility of the user to correct such interference.

UDAS-1001E Series User Manual

Revision History

Version Date Revision

1.0 000218 Original Release

Table of Contents

Chapter 1 UDAS-1001E Series Data Acquisition Systems

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

FIGURE 1.1 UDAS Series Block Diagram . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.2 UDAS 1001E Series Functional Description . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.2.1 Data Acquisition Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

FIGURE 1.2 UDAS-1001E-4 dimensional drawing. . . . . . . . . . . . . . . . . 1-10

1.2.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.3 Software Support and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.3.1 Software Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Chapter 2 Configuration and Installation

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Power-on Default Digital I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . 2-1

FIGURE 2.1 UDAS Switch S1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

TABLE 2.1 CJC Jumper Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.3 Connecting the UDAS Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Chapter 3 Checking the System

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Installing and Running UDAS SYSCHECK . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.3 SYSCHECK Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.3.1 Unit Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

FIGURE 3.1 Unit Info dialog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3.2 System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

FIGURE 3.2 UDAS SYSCHECK System Check dialog . . . . . . . . . . . . . 3-4

3.3.2.1 Analog Input Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

FIGURE 3.3 UDAS SYSCHECK Analog Input Test of a UDAS unit. . . . 3-5

3.3.2.2 Analog Output Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

FIGURE 3.4 UDAS SYSCHECK Analog Output Test of a UDAS unit . . 3-6

3.3.2.3 Counter Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

FIGURE 3.5 UDAS SYSCHECK Counter Test in Count Mode . . . . . . . 3-7

FIGURE 3.6 UDAS SYSCHECK Counter Test: Measure Input High Mode 3-8
FIGURE 3.7 UDAS SYSCHECK Counter Test: Measure Frequency Mode 3-9

FIGURE 3.8 UDAS SYSCHECK Digital I/O Test . . . . . . . . . . . . . . . . . . 3-10

3.3.3 Paced Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

FIGURE 3.9 UDAS SYSCHECK Paced Analog Input Window . . . . . . . 3-11

FIGURE 3.10 High-Speed Aquisition Sample. . . . . . . . . . . . . . . . . . . . . . 3-12

3.4 Troubleshooting Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

3.4.1 Basic Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

FIGURE 3.11 System Error message window . . . . . . . . . . . . . . . . . . . . . 3-13

i

Table of Contents

3.4.1.1 Verify Lower Level Drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Appendix A Specifications

A.1 UDAS-1001E Series Hardware Specifications. . . . . . . . . . . . . . . . . . . . . A-1

TABLE A.1 Hardware Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

A.2 UDAS-1001E-3, UDAS-1001E-4 Dimensions . . . . . . . . . . . . . . . . . . . . . A-4

FIGURE A.1 Dimensions of the UDAS unit (Top view) . . . . . . . . . . . . . A-4

FIGURE A.2 Dimensions of the UDAS unit (Rear panel) . . . . . . . . . . . A-4

FIGURE A.3 Dimensions of the UDAS unit (Bottom view) . . . . . . . . . . A-5

FIGURE A.4 Dimensional Drawing of the UDAS series PCB . . . . . . . . A-6

A.3 UDAS I/O Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

TABLE A.2 UDAS I/O Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

Appendix B Accessories

TABLE B.1 Accessories for the UDAS-1001E Series . . . . . . . . . . . . . . B-1

B.1 UDAS Termination Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

B.1.1 PCI-20429T-1 Multifunction Termination Panel . . . . . . . . . . . . . . . . . B-2

FIGURE B.1 Securing the PCI-20429T-1 to the UDAS unit . . . . . . . . . B-2

FIGURE B.2 PCI-20429T-1 Multifunction Termination Panel . . . . . . . . B-3

B.1.2 UDAS Termination and Signal Conditioning Options . . . . . . . . . . . . . B-4

FIGURE B.3 UDAS-1001E Termination Options. . . . . . . . . . . . . . . . . . B-4

FIGURE B.4 UDAS-1001E Termination Options (continued) . . . . . . . . B-5

FIGURE B.5 Diagram of the PCI-20430A-1’s connectors and cables . . B-6

B.1.3 Isolator Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Appendix C Analog Input and Output Calibration Procedures

C.1 UDAS Analog Input Circuit Calibration Procedures . . . . . . . . . . . . . . . . . C-1

C.1.1 Removing the UDAS Unit’s Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

FIGURE C.1 Locations of Potentiometers for Adjusting Analog Circuits C-2

C.1.2 Analog Input Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

C.2 UDAS Analog Output Circuit Calibration Procedure . . . . . . . . . . . . . . . . C-6

ii

Chapter 1Chapter 1 UDAS-1001E Series Data UDAS-1001E Series Data

Acquisition SystemsAcquisition Systems

1.11.1 IntroductionIntroduction

The UDAS-1001E Series Data Acquisition Systems are stand-alone, multifunction, plug-and-play
data acquisition systems that connect to the Universal Serial Bus and operate using power
supplied through either the USB connector or an external power supply.

All of the systems feature analog inputs (8 differential, 16 single-ended), digital I/O (Two 8-bit
ports, each port configurable to input or output), and one counter channel. Selected models
include an analog output section.

The UDAS Models include:

UDAS-1001E-1

This is a stand alone unit for use with standard termination products.

UDAS-1001E-1G

This model is similar to the UDAS-1001E-1, without the housing for use in OEM applications or
other situations where a bare board is appropriate.

UDAS-1001E-2

This is a stand alone unit for use with standard termination products. It includes a two-channel
analog output with wave form generation.

UDAS-1001E-2G

This model is similar to the UDAS-1001E-2, without the housing for use in OEM applications or
other situations where a bare board is appropriate.

UDAS-1001E-3

This model has a multifunction data acquisition system with built-in termination.

UDAS-1001E-4

This model is similar to the UDAS-1001E-3, with built-in termination and analog outputs.

1-1

UDAS-1001E Series Data Acquisition Systems

1.1.11.1.1 FeaturesFeatures

Features and basic specifications of the UDAS units are listed below. Specifications of each UDAS
unit are listed in Appendix A, Specifications. The UDAS system block diagram is shown below.

J2

DIGITAL I/O

4

USB

USB
INTERFACE
CHIP

POWER

SUPPLY

µ PROCESSOR

Dotted line indicates optional Analog Output

FIGURE 1.1 UDAS Series Block Diagram

SoftwareSupport LibrarySoftwareSupport Library

The software support library is included with the UDAS.
UDAS Support Software includes:

• UDAS SYSCHECK

• U-Link Software Libraries for Windows 98

• LabView 5.0 Support Library

• UDAS Device Driver

• Visual Designer Support Library

A/D

FIFO

RATE

GENERATOR

ANALOG OUTPUT

RATE

GENERATOR

COUNTER

ANALOG

16

FRONT-END

I/O CONNECTOR

1-2

UDAS SYSCHECK

The SYSCHECK application enables you to verify the UDAS installation is functioning properly.
SYSCHECK can also be used during the calibration procedure and for simple data acquisition.

U-Link Software Libraries for Windows 98

These function libraries allow custom application development using C/C++ and Visual Basic.

LabView 5.0 Support Library

Allows the use of UDAS with LabVIEW.

UDAS Device Driver

To use the UDAS unit, Microsoft Windows requires the UDAS device driver.

Visual Designer Support Library

The Visual Designer Support Library allows the use of the UDAS device in Visual Designer 4.0
applications.

Analog InputAnalog Input

The UDAS unit features:

• 16 Single-ended or 8 Differential Analog Inputs
(±0.05 V, ±0.1 V, ±0.5 V, ±1 V, ±5 V, ±10 V, and 0-0.1 V, 0-1.0 V, 0-10V programmable input

ranges).

• Analog Input resolution: 12-bit (1 part in 4096).

• Up to 100 kHz input sample rate (built-in timebase generator).

• Analog Trigger function to start analog-to-digital conversions.

Analog OutputAnalog Output

The UDAS unit features:

• Up to 100 kHz output rate (built-in timebase generator).

• 2 analog outputs at 12-bit resolution (±10V output range, 1 part in 4096).

• Waveform generation

1-3

UDAS-1001E Series Data Acquisition Systems

Digital Input/OutputDigital Input/Output

• 16 Programmable digital I/O channels. Groups of 8 separately programmable for input or
output.

• Digital inputs can be programmed to read digital signal status, detect a change-of-state or to
perform low speed event counting (up to 2 kHz).

• Digital outputs can drive TTL level signals.

• 8 of the 16 I/O channels can be configured for preset direction and output state levels for safe

power-up and reset situations.

CounterCounter

One 16-bit counter channel performs general purpose event counting and frequency measurement
up to 20 MHz up to 2 MHz for high-speed event counting.

TerminationTermination

The UDAS-1001E-3 and UDAS-1001E-4 units have built-in depluggable termination blocks for
connecting I/O signals. The UDAS-1001E-1 and UDAS-1001E-2 units have a 50-pin I/O connector
for attaching external termination. Information on termination panels is provided in Appendix B,
Accessories.

1.21.2 UDAS 1001E Series Functional DescriptionUDAS 1001E Series Functional Description

This section provides information on the following data acquisition functions:

• Analog input

• High-speed analog input

• Acquisition pacing and triggering

• Power supplied by the USB port or by an external power supply

1.2.11.2.1 Data Acquisition FunctionsData Acquisition Functions

Analog InputAnalog Input

The A/D converter on the UDAS device is a 12-bit converter with a throughput rate of 100 kHz.
For analog input:

• Programmable input voltage ranges are 0-10 V, ±5 V, and ±10 V.

1-4

• Programmable gains are 1, 10, and 100 which translate to a full-scale input of 0-10 V, 0-1.0 V,
0-0.1 V, ±10 V, ±1.0 V, ±0.1 V, ±5 V, ±0.5 V, and ±0.05 V.

• The analog input section has 16 single-ended or 8-differential analog input channels.

The analog input section has a first-in-first-out (FIFO) buffer for high-speed capturing of data up
to 100 kHz.

An analog trigger is also provided to initiate high-speed conversions based on a voltage transition
on a selected analog input channel, or on an external TTL level signal. A programmable crystal­based rate generator regulates high-speed conversions.

High-Speed Analog Input ModeHigh-Speed Analog Input Mode

High-speed mode uses the rate generator (described below), or an external input to start data
conversions. The use of the rate generator or an external signal to start conversions is referred to
as pacing.

On the UDAS unit, the rate generator is able to provide rates from 0.477 conversions per second
to 100,000 conversions per second. These conversions are either performed on a single input
channel, or performed on a range of input channels by using the channel scanner (described
below).

When the conversion is complete on the current channel, the channel scanner automatically
selects the next channel. The term high-speed refers to the use of pacing to automatically begin
the conversions. The speed of the actual rate of conversions can be controlled by using the rate
generator. See Rate Generator , on page 1-6.

Starting and Stopping the High-Speed Analog Input ModeStarting and Stopping the High-Speed Analog Input Mode

There are several methods to start and stop conversions available on the UDAS:

• Start with trigger, Stop with software

• Start with trigger, Stop after N samples

• Start with software, Stop N samples after trigger

• Start with software, Stop with software

• Start with software, Stop after N samples

Starting Conversions

To start the conversions, use either a trigger or a software command. The trigger can be an
external digital TTL level input, or an analog input. For an external TTL signal, the slope (rising
edge or falling edge) must be specified. Use the external input pin to provide this input.

1-5

UDAS-1001E Series Data Acquisition Systems

If an analog input is used for the trigger, specify the trigger level, analog input channel, and
slope. Use analog output channel 1 for setting the trigger level.

Note: When using analog input channel 1 for a trigger, do not use this channel

for any other purpose.

When an input signal on the selected channel of the proper slope (rising or falling voltage) crosses
the trigger level, the conversion process begins.

Stopping Conversions

To stop a conversion, use either a software command, an N samples counter, or a combination of a
trigger and an N samples counter.

Use the N samples counter to specify the number of samples that you want to capture.
When the trigger is used to stop a conversion, and the N samples counter is used, a post-

triggering function occurs. In this mode, software is used to start conversions and continue
indefinitely until a trigger event occurs. When a trigger event occurs, N additional samples are
captured.

Rate GeneratorRate Generator

The UDAS unit contains an on-board 24-bit rate generator for analog input pacing. The base clock
for the rate generator is an 8 MHz clock derived from a crystal which provides 125 ns resolution
and a frequency range of 0.4768371 Hz to 4 MHz.

The I/O connector has a rate generator output pin that is driven by either the Analog Input Rate
Generator or the Analog Output Rate Generator.

Channel ScannerChannel Scanner

When the channel scanner is enabled, immediately after the conversion on the current channel
finishes, the next analog input channel to be converted is automatically selected.

The UDAS device incorporates a 0 to N scanner. This allows analog conversions on all of the input
channels from channel 0 to channel N, where the value of N is programmable.

The scanner selects each channel for conversion, beginning with channel 0, incrementing to
channel N. After the conversion on channel N is complete, the scanner selects channel 0 and the
process repeats.

1-6

The scanner operates with the built-in analog channels, or with the optional AI-MAX. The AI­MAX allows up to 256 analog input channels to be connected to a single UDAS device.

Note: The scanner begins on the selected trigger channel and not channel 0 when the

start on trigger mode is used with an analog input trigger.

High-Speed Analog Input TriggeringHigh-Speed Analog Input Triggering

To start or stop conversions, use triggering in the High-Speed Analog Input mode in the UDAS
device. The trigger signal can be either an analog input or a digital input.

When using an analog input as the trigger, the start on trigger mode causes the scanner to start
on the trigger channel. For example, if the trigger channel is set to 5, the N channel of the 0 to N
scanner is set to 7, the return data is as follows:

channel 5
channel 6
channel 7
channel 0
channel 1
...
channel 7
channel 0
...

When using the stop on trigger mode and the trigger is from an analog input channel, the trigger
signal is sampled only when the trigger channel is the active scanner channel. Although this
allows any channel to be used for triggering, it imposes some restrictions on the characteristic of
the trigger signal.

The duration of the trigger signal must be long enough to cause the unit to trigger. Use the
following formula to calculate the length of a signal to ensure that the signal is long enough to
activate the trigger: (Total channels scanned)/(scan rate in Hz).

1-7

UDAS-1001E Series Data Acquisition Systems

Example:

If 9 channels are being scanned at a rate of 100Hz and the slope is low to high, the trigger signal
must remain below the trigger level for 9/100 of a second, and above the trigger level for 9/100 of a
second to ensure that a trigger event occurs. When using External Input as the trigger, this
restriction does not apply.

When using an analog input channel for triggering, analog output channel 1 is used to set the
trigger level.

Note: Do not use analog output channel 1 for any other purpose while analog

triggering is in use.

Due to the internal configuration of the unit, the voltage appears on the analog output 1 pin as
the negative value of the desired trigger voltage. Connecting this pin to another signal, or
shorting it out causes the trigger voltage to be incorrect.

Auto ZeroAuto Zero

When in auto zero mode, the inputs to the Analog input circuit are internally grounded, disabling
the input multiplexers. This enables a known 0 volt signal to be measured, and the value read can
be used to compensate for input offset errors.

Analog OutputAnalog Output

The UDAS device has two analog output channels. Each output channel has 12-bit resolution and
a ±10 V output range. A FIFO is available for waveform generation.

This FIFO can be used as a circular buffer for either or both analog output channels to allow
repetitive waveform generation and supports waveforms of up to 512 points (single channel) or
256 points (dual channel). The unit also supports non-repetitive wave forms.

When the unit is powered-on and the analog outputs are not enabled, the output voltage is 0 V.
This provides a known voltage when the UDAS unit is powered-up.

Analog output channel 1 is also used to support the analog trigger function for hardware-paced
analog input conversions (as described above).

Digital I/ODigital I/O

The digital data acquisition circuit consists of two 8-bit digital I/O ports providing 16 digital I/O
bits and one 32-bit counter. Output power-on states are configured for Port 1 through an internal
DIP switch. The digital I/O is configured as 2 ports (0 and 1) of eight bits each.

1-8

Digital I/O signals are TTL-compatible and perform functions such as reading digital inputs,
driving digital outputs, and detecting input change-of-state.

Digital I/O direction is programmable separately for each port through software. A nine-position
DIP switch is provided inside of the unit to select the power-up direction of Digital I/O Port 1
(input/output) and to individually set power-up output states for each bit.

CountersCounters

One counter input line is connected to a 32-bit counter for high-speed counting (up to 2 MHz).
This counter supports event counting and frequency measurement.

An event counter counts pulses occurring at its input. For frequency measurement mode, the
pulses are captured over an internally generated gate time. The frequency is calculated from the
captured count and the gate time. The gate time can be set to 1ms, 10ms, 100ms, or 1s through
software.

TerminationTermination

The UDAS unit provides the user with several options for connecting to I/O signals. You can use a
50-pin ribbon cable to connect signals directly to the UDAS unit.

There are many termination products available from Intelligent Instrumentation with a 50-pin
interface. See our catalog for a variety of termination options. For the UDAS-1001E-3 and UDAS­1001E-4 models, use the built-in termination to connect signals directly to the unit.

The built-in termination panel is directly mounted to the back plate of the UDAS unit, providing
easy access to all I/O signals (FIGURE 1.2, UDAS-1001E-4 dimensional drawing). The
connections are made using pluggable 5mm terminal strips to simplify the wiring. A cold junction
compensation circuit (CJC) is incorporated on the board to allow the use of thermocouples.

To use the CJC circuit, you must enable it by setting the jumpers. The jumpers are located on the
back side of the termination panel and require removal of the panel to gain access. For
information on the jumpers, reference Chapter 2, Configuration and Installation, and see TABLE

2.1, CJC Jumper Positions.

Note: When the CJC is enabled, differential channel 0 is used. Do not connect

anything to Analog Input 0 or Analog Input 8.

1-9

UDAS-1001E Series Data Acquisition Systems

A diagram of the termination panel for the UDAS-1001E-4 unit is shown below.

5.750

6.600

1-10

1.520

7.290

FIGURE 1.2 UDAS-1001E-4 dimensional drawing

1.2.21.2.2 PowerPower

The UDAS unit normally uses power from the host computer via the USB cable. Power can also be
obtained from an external power supply that is available (See Appendix B, Accessories). When the
UDAS unit is connected to a power source, the computer controls the power. The unit does not
have a power switch. There is an LED labeled PWR located on the front panel that indicates
power to the unit, regardless of its source.

The USB specification imposes strict requirements on power usage. If an external power supply is
used, up to 200 mA at +5 VDC is available to external termination circuits (available at pin-26
and pin-48 of the unit’s 50-pin I/O connector).

See section 1.3, Software Support and Accessories or Appendix B, Accessories for the part numbers
of the available Power Adapters. If the power is supplied from the PC through the USB port, care
must be taken to limit the load from the external termination panel to less than 20 mA.

1.31.3 Software Support and AccessoriesSoftware Support and Accessories

1.3.11.3.1 Software SupportSoftware Support

DiagnosticDiagnostic

UDAS SYSCHECK

UDAS SYSCHECK software for Windows is an easy-to-use system assurance and diagnostic
utility package. UDAS SYSCHECK is a useful tool for quickly verifying the hardware is
functioning properly. This program also performs basic data acquisition tasks. UDAS
SYSCHECK is provided on the UDAS-1001E Data Acquisition System CD, or is available to
download, free of charge, from Intelligent Instrumentation’s Web site (www.instrument.com).

DevelopmentDevelopment

Visual Designer Application Generator

Visual Designer is a powerful, easy-to-use application generator that supports all of Intelligent
Instrumentation’s data acquisition hardware and is available from Intelligent Instrumentation.
Use Visual Designer to develop custom Windows applications for collecting remote data using a
graphical block diagram development environment.

To create custom applications in a fraction of the time it takes when using a programming
language, Visual Designer is able to combine built-in professional screen displays and user
interface elements with powerful data acquisition and processing blocks.

1-11

UDAS-1001E Series Data Acquisition Systems

Visual Designer UDAS Support Library

This support package provides the block functions necessary to acquire data and output data
using the UDAS device. To use Visual Designer or the Visual Designer Evaluation Version with
an UDAS unit, the Visual Designer UDAS Support Library must be installed on the computer.

LabVIEW UDAS Support Library

This support package enables the development of customized UDAS data acquisition and control
applications under the LabVIEW environment. To use this software, National Instruments
LabVIEW software (version 5.0 or higher is supported) must be installed on the computer.

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Chapter 2Chapter 2 Configuration and Configuration and

InstallationInstallation

2.12.1 IntroductionIntroduction

This chapter contains instructions on the configuration and installation of the UDAS unit.

2.22.2 Power-on Default Digital I/O ConfigurationPower-on Default Digital I/O Configuration

In some situations, it is important to have the digital output port on a UDAS unit initialize at
power-on to a particular state. For example, if the digital output port controls a piece of
mechanical equipment, safety regulations may require the digital output port bits to have values
of 0000 0011 when power is first applied. Port 1 on the UDAS unit provides the ability to set the
power-on direction to output and the states of all of the bits. A switch block located on the main
board of the UDAS unit accomplishes this task. Since the default switch states configure the port
for input, you may not need to change the switch settings.

This section contains instructions for setting the power-on default Digital I/O configuration, if
applicable.

CAUTION:

Use proper static-sensitive device handling procedures (such as the use of grounded
wrist-strap) when opening the unit, as damage to the equipment may occur.

Removing the CoverRemoving the Cover

1. Unplug the power supply to the UDAS unit.

2. Using a Phillips head screwdriver, remove the two Phillips head screws on the front face plate

of the UDAS unit I/O cover. The front face plate contains the power and status indicators and
the USB connector.

3. Carefully separate the face plate from the cover.

4. Slide the cover towards the open end of the unit to free it from the back termination plate,

removing the cover from the UDAS unit.

2-1