USB-1024HLSHigh Drive, 24-bit Digital I/O
Low-speed USB 2.0 device

User’s GuideUSB-1024HLS
USB-based Digital I/O Module
User's Guide

Document Revision 2A, May, 2006
© Copyright 2006, 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.
© 2006 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.

iii

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

Introducing the USB-1024HLS......................................................................................................... 1-1
USB-1024HLS block diagram........................................................................................................................ 1-2
Software features ............................................................................................................................................ 1-2
Connecting a USB-1024HLS to your computer is easy ................................................................................. 1-3
Chapter 2

Installing the USB-1024HLS ............................................................................................................. 2-1
What comes with your USB-1024HLS shipment? ......................................................................................... 2-1
Hardware ....................................................................................................................................................................... 2-1
Additional documentation.............................................................................................................................................. 2-1

Unpacking the USB-1024HLS ....................................................................................................................... 2-1
Installing the software .................................................................................................................................... 2-2
Installing the hardware ................................................................................................................................... 2-2
Chapter 3

Functional Details ............................................................................................................................. 3-1
External components ...................................................................................................................................... 3-1
USB connector............................................................................................................................................................... 3-1
LED ............................................................................................................................................................................... 3-1
Screw terminal wiring.................................................................................................................................................... 3-2
Main connector and pin out ........................................................................................................................................... 3-2
Digital I/O terminals (Port A0 to A7, Port B0 to B7, Port C0 to C7)............................................................................. 3-3
Power terminals ............................................................................................................................................................. 3-4
Ground terminals ........................................................................................................................................................... 3-5
Counter terminal ............................................................................................................................................................ 3-5
Pull-up/pull-down terminals .......................................................................................................................................... 3-5
Chapter 4

Specifications.................................................................................................................................... 4-1
Digital input/output......................................................................................................................................... 4-1
Counter section ............................................................................................................................................... 4-2
Power.............................................................................................................................................................. 4-2
General ........................................................................................................................................................... 4-3
Environmental ................................................................................................................................................ 4-3
Mechanical ..................................................................................................................................................... 4-3
Main connector and pin out ............................................................................................................................ 4-3

iv

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 USB-1024HLS so that you get the most out of
its USB digital 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
Additional information about E-1608 hardware is available on our website at www.mccdaq.com. You can also
contact Measurement Computing Corporation by phone, fax, or email with specific questions.


Knowledgebase: kb.mccdaq.com
Tech support form: www.mccdaq.com/support/support_form.aspx
Email: techsupport@mccdaq.com
Phone: 508-946-5100 and follow the instructions for reaching Tech Supportv

Chapter 1

Introducing the USB-1024HLSThis user's guide contains all of the information you need to connect the USB-1024HLS to your computer andto the signals you want to measure.
The USB-1024HLS is a USB 2.0 low-speed module supported under popular Microsoft® Windows® operating
systems. It is designed for USB 1.1 ports, and was tested for full compatibility with both USB 1.1 and USB 2.0
ports.
Refer to the "Be sure you are using the latest system software" note in Chapter 2, "Installing the USB1024HLS," to make sure you are using the latest USB drivers.
The USB-1024HLS is a high drive, 24-line digital I/O module that includes one 32-bit external event counter.
The module is powered by the +5 volt USB supply from your computer. No external power is required.
An emulation of the 82C55 in mode 0 (only) sets the direction of the 24 digital I/O lines in four ports. Eachdigital port can be configured for either input or output. The 74FCT244 outputs are high-drive TTL, capable ofsourcing 15 mA and sinking 64 mA.
The USB-1024HLS is shown in Figure 1-1. All I/O connections are made to the screw terminals on each side of
the USB-1024HLS.

Figure 1-1. USB-1024HLS

1-1

USB-1024HLS User's Guide

Introducing the USB-1024HLS

USB-1024HLS block diagram
USB-1024HLS functions are illustrated in the block diagram shown here.

USB 2.0
compliantinterface32-bitevent counter1 channel

USB
Microcontroller

8
1
8

8

8

Port APort B

Port C Port C
HI
LO

8

8

4

Discrete, lowpower drivers

4

Screw terminal I/O connector
Figure 1-2. USB-1024HLS functional block diagram

Software features
For information on the features of InstaCal and the other software included with your USB-1024HLS, refer tothe 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 or versions of the software supported
under less commonly used operating systems.

1-2

USB-1024HLS User's Guide

Introducing the USB-1024HLS

Connecting a USB-1024HLS to your computer is easy
Installing a data acquisition device has never been easier.
!

!
!

!
!
!

The USB-1024HLS relies upon the Microsoft Human Interface Device (HID) class drivers. The HID classdrivers ship with every copy of Windows that is designed to work with USB ports. We use the Microsoft
HID because it is a standard, and its performance delivers full control and maximizes data transfer rates foryour USB-1024HLS. No third-party device driver is required.
The USB-1024HLS is plug-and-play. There are no jumpers to position, DIP switches to set, or interrupts toconfigure.
You can connect the USB-1024HLS before or after you install the software, and without powering down
your computer first. When you connect an HID to your system, your computer automatically detects it andconfigures the necessary software. You can connect and power multiple HID peripherals to your systemusing a USB hub.
You can connect your system to various devices using a standard four-wire cable. The USB connector
replaces the serial and parallel port connectors with one standardized plug and port combination.
You do not need a separate power supply module. The USB automatically delivers the electrical power
required by each peripheral connected to your system.
Data can flow two ways between a computer and peripheral over USB connections.

1-3

Chapter 2

Installing the USB-1024HLS
What comes with your USB-1024HLS shipment?
The following items are shipped with the USB-1024HLS.

Hardware!

USB-1024HLS!

USB cable (2 meter length)

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 USB-1024HLS and information regarding installation of that software.
Please read this booklet completely before installing any software or hardware.

Unpacking the USB-1024HLS
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the USB-1024HLS 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 your USB-1024HLS is damaged, notify Measurement Computing Corporation immediately by phone, fax, ore-mail. For international customers, contact your local distributor where you purchased the USB-DIO24/37.
!
!
!

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

2-1

USB-1024HLS User's Guide

Installing the USB-1024HLS

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 hardware
Be sure you are using the latest system software
Before you connect the USB-1024HLS, make sure that you are using the latest versions of the USB drivers.
Before installing the USB-1024HLS, download and install the latest Microsoft Windows updates. In particular,when using Windows XP, make sure you have XP Hotfix KB822603 installed. This update is intended toaddress a serious error in Usbport.sys when you operate a USB device. You can run Windows Update or
download the update from www.microsoft.com/downloads/details.aspx?familyid=733dd867-56a0-4956-b7fee85b688b7f86&displaylang=en. For more information, refer to the Microsoft Knowledge Base article"Availability of the Windows XP SP1 USB 1.1 and 2.0 update." This article is available at
support.microsoft.com/?kbid=822603.
To connect the USB-1024HLS to your system, turn your computer on, and connect the USB cable to a USB
port on your computer or to an external USB hub that is connected to your computer. The USB cable provides
power and communication to the USB-1024HLS.
When you connect the USB-1024HLS for the first time, a Found New Hardware popup balloon (Windows XP)
or dialog (other Windows versions) appear as the USB-1024HLS is detected.

Another Found New Hardware balloon or dialog opens that identifies the USB-1024HLS as a USB Human
Interface Device.
When the balloon or dialog closes, the LED on the USB-1024HLS should flash and then remain lit. This
indicates that communication is established between the USB-1024HLS and your computer
Caution! Do not disconnect any device from the USB bus while the computer is communicating with theUSB-1024HLS, or you may lose data and/or your ability to communicate with the USB-1024HLS.
If the LED turns off
If the LED is lit but then turns off, the computer has lost communication with the USB-1024HLS. To restore
communication, disconnect the USB cable from the computer, and then reconnect it. This should restore
communication, and the LED should turn back on.

2-2

Chapter 3

Functional Details
External components
The USB-1024HLS has the following external components, as shown in Figure 3-1.
!
!
!

USB connector
LED
Screw terminal banks (2)LED

Screw terminal
Pins 1 to 20

Screw terminal
Pins 21 to 40
USBconnector / cable
Figure 3-1. USB-1024HLS external components

USB connector
The USB connector is on the right side of the USB-1024HLS housing. This connector provides +5 V power andcommunication. The voltage output is system-dependent, and may be less than +5 V. No external power supply
is required.

LED
The LED on the front of the housing indicates the communication status of the USB-1024HLS. It uses up to 5
mA of current and cannot be disabled. Table 3-1 explains the function of the USB-1024HLS LED.
Table 3-1 LED illumination
LED Illumination

Indication

Steady green
Blinks continuously
Blinks three times

The USB-1024HLS is connected to a computer or external USB hub.
Data is being transferred.
Initial communication is established between the USB-1024HLS and the computer.

3-1

USB-1024HLS User's Guide

Functional Details

Screw terminal wiring
The USB-1024HLS has two rows of screw terminals—one row on the top edge of the housing, and one row on
the bottom edge. Each row has 20 connections. Pin numbers are identified here.

Figure 3-2. USB-1024HLS screw terminal pin numbers

Screw terminal – pins 1 to 20
The screw terminals on the top edge of the USB-1024HLS (pins 1 to 20) provide the following connections:
!
!
!
!
!

Eight digital I/O connections (Port C0 to Port C7)
One counter connection (CTR)
Two power connections (USB +5 V)
Three pull-up and pull-down connections (Port A Pull-up/Pull-down, Port B Pull-up/Pull-down and Port
C Pull-up/Pull-down)
Six ground connections (GND)

Screw terminal – pins 21 to 40
The screw terminals on the bottom edge of the USB-1024HLS (pins 21 to 40) provide the following
connections:!
!
!

16 digital I/O connections (Port A0 to Port A7, and Port B0 to Port B7)
One power connection (USB +5 V)
Three ground connections (GND)

Main connector and pin out
Connector type
Wire gauge range

Screw terminal
16 AWG to 30 AWG

3-2

Functional Details

GND
Port B7
Port B6
Port B5
Port B4
Port B3
Port B2
Port B1
Port B0
GND
USB +5 V
GND
Port A7
Port A6
Port A5Port A4
Port A3
Port A2
Port A1
Port A0

40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21

20 CTR
19 GND
18 GND
17 GND
16 GND
15 Port A Pull-up / Pull-down
14 USB +5 V
13 Port B Pull-up / Pull-down
12 GND
11 Port C Pull-up / Pull-down
10 USB +5 V
9 GND
8 Port C7
7 Port C6
6 Port C5
5 Port C4
4 Port C3
3 Port C2
2 Port C1
1 Port C0

USB-1024HLS User's Guide

Digital I/O terminals (Port A0 to A7, Port B0 to B7, Port C0 to C7)Connect up to 24 digital I/O lines to the screw terminal containing pins 1 to 8 (Port C0 to Port C7), pins 21 to
28 (Port A0 to Port A7), and pins 32 to 39 (Port B0 to Port B7). Refer to the pinout diagram on page 3-2 for thelocation of these pins. You can configure each digital port for either input or output.
When configured for input, you can use the USB-1024HLS digital I/O terminals to detect the state of any TTL
level input. Refer to the switch shown in Figure 3-3 and the schematic shown in Figure 3-4. If you set theswitch to the +5 V input, Port A0 reads TRUE (1). If you move the switch to GND, Port A0 reads FALSE.

Figure 3-3. Digital connection of Port A0 detecting the state of a switch

3-3

USB-1024HLS User's Guide

Functional Details

Port A0

+GND

+5 V

Figure 3-4. Schematic showing switch detection by digital channel Port A0

For more information on digital signal connections
For more information on digital signal connections and digital I/O techniques, refer to the Guide to Signal
Connections (available on our web site at www.mccdaq.com/signals/signals.pdf).

Power terminals
The USB +5V connection (pin 30) is on the bottom screw terminal of the USB-1024HLS. Refer to the pinout
diagram on page 3-2 for the location of this terminal. This terminal draws power from the USB connector. The+5 volt screw terminal is a +5 volt output that is supplied by the connected computer.
Caution! The USB +5 V terminal is an output. Do not connect to an external power supply or you may
damage the USB-1024HLS and possibly the computer.
Once you start running applications with the USB-1024HLS, each DIO bit can draw up to 15 mA. The
maximum amount of +5 V current available for external use, over and above that required by the USB1024HLS, is the difference between the total current requirement of the USB-1024HLS (based on theapplication), and the allowed current draw of the computer platform.
The following power limits depend on whether you are sourcing current out of the USB-1024HLS, or you aresinking current into the USB-1024HLS.
Output (source) current limits: desktop computers and self-powered hubs
The maximum allowed current draw for a typical desktop computer and self-powered hub is 500 mA. You mustaccount for the supply current drawn from the USB supply for the USB-1024HLS itself, plus the current usedby each DIO line. Since each DIO line can output 15 mA maximum, 24 DIO × 15 mA = 360 mA (maximum
rating for the chips).
Output (source) current limits: notebook computers and bus-powered hubs
The maximum allowed current draw for a typical notebook computer and bus-powered hub is 100 mA. Because
the USB-1024HLS would use a significant portion of this available current, this leaves you with little or nocurrent for the DIO lines. For this reason, the USB-1024HLS is not supported for this configuration. To
overcome this limitation, an external self-powered hub can be used to supply the proper current level required
for full output capability as noted above.
Output (sink) current limits
Each USB-1024HLS DIO output can sink up to 64 mA. For an individual line, this is not a problem. But if you
were to apply this maximum load to all 24 DIO lines, you may damage the USB-1024HLS because the total
amount of current is well over the maximum for the USB supply.
If you want to sink the maximum of 64 mA per DIO line, you can only do so with up to six lines. To sinkcurrent with all 24 DIO outputs at any one time, you can sink a maximum of 18 mA per line.

3-4

USB-1024HLS User's Guide

Functional Details

Ground terminals
The nine ground (GND) connections are identical, and provide a common ground for all USB-1024HLS
functions. Refer to the pinout diagram on page 3-2 for the location of the GND terminal.

Counter terminal
Pin 20 (CTR) is the input to the 32-bit external event counter. Refer to the pinout diagram on page 3-2 for thelocation of this terminal. The internal counter increments when the TTL levels transition from low to high. The
counter can count frequencies of up to 1 MHz.

Pull-up/pull-down terminals
You can wire pin 11 (Port C Pull-up/Pull-down), pin 13 (Port B Pull-up/Pull-down), and pin 15 (Port A Pullup/Pull-down) to support a pull-up or pull-down connection. These terminals configure the internal 47K
resistors on the USB-1024HLS. Refer to the pinout diagram on page 3-2 for the location of these terminals.
These terminals are configured as open by default.
!

To configure a pull-up connection for a specific port, wire the pull-up/pull-down terminal to a USB +5 V
terminal.

Figure 3-5. Pull-up connection for Port A!

To configure a pull-down connection for a specific port, wire the pull-up/pull-down terminal to a GND
terminal.

Figure 3-6. Pull-down connection for Port A

3-5

USB-1024HLS User's Guide

Functional Details

Wiring schematics are shown here for each pull-up/pull-down terminal. Dotted lines represent a pull-up or
pull-down connection.
USB +5 V
DIO 0 (Port A0)

Pull-upPin 15

DIO 1 (Port A1)
DIO 2 (Port A2)
DIO 3 (Port A3)
DIO 4 (Port A4)
DIO 5 (Port A5)
DIO 6 (Port A6)
DIO 7 (Port A7)

Pull-down
GND

Port A

Figure 3-7. Schematic showing Port A pull-up/pull-down wiring options
USB +5 V
DIO 0 (Port B0)

Pull-upPin 13

DIO 1 (Port B1)
DIO 2 (Port B2)
DIO 3 (Port B3)
DIO 4 (Port B4)
DIO 5 (Port B5)
DIO 6 (Port B6)
DIO 7 (Port B7)

Pull-down
GND

Port B

Figure 3-8. Schematic showing Port B pull-up/pull-down wiring options
USB +5 V
DIO 0 (Port C0)

Pull-upPin 11

DIO 1 (Port C1)
DIO 2 (Port C2)
DIO 3 (Port C3)
DIO 4 (Port C4)
DIO 5 (Port C5)
DIO 6 (Port C 6)
DIO 7 (Port C7)

Pull-down
GND

Port C

Figure 3-9. Schematic showing Port C pull-up/pull-down wiring options

3-6

Chapter 4

Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Digital input/output
Table 1. Digital I/O specifications
Digital input type
Digital output type
Number of I/O
Configuration

74ACT373
74FCT244
24 (port A0 through port C7)
2 banks of 8 and 2 banks of 4 or
3 banks of 8

Pull up/pull-down configuration

Internal 47K resistors may be user configured for pull-up or pull-down via
external connection of "Port x Pull-up / Pull-down" to "USB +5 V" or “GND”.
Ports A, B, and C are independently configurable.
2.0 V min, 5.5 V absolute max
0.8 V max, –0.5 V absolute min
2.4 V min
0.55 V max
Maximum = 15 mA per output

Input high voltage
Input low voltage
Output high voltage (IOH = -15 mA)
Output low voltage (IOL= 64 mA)
Source current – (Note 1)! Self -powered hub! Externally-powered root port hub
Source current – (Note 2)! Bus-powered hub! Battery-powered root port hub.
Sink current - (Note 3)
Power up/reset state

Not supported

Current sink max: 365 mA / [number of outputs].
64 mA max sink current for any single output.
Input mode (high impedance)

Note 1: "Self-powered hub" refers to a USB hub with an external power supply. Self-powered hubs allow aconnected USB device to draw up to 500 mA. "Root port hubs" reside in the PC’s USB Host
Controller. The USB port(s) on your PC are root port hubs. All externally powered root port hubs (i.e.
desktop PC’s) provide up to 500 mA of current for a USB device. In this configuration, all 24 digital
outputs of the USB-1024HLS can source their per-pin maximum of 15 mA. This provides a totalrequirement of 15 mA*24 = 360 mA. Combining this with the USB-1024HLS operating current of 135
mA a fully-loaded current draw of 495 mA is realized.
Note 2: "Bus-powered hub" refers to a USB hub that derives power directly from the USB +5 V and does nothave its own power supply. These hubs allow a connected USB device to draw up to 100 mA. Batterypowered root port hubs provide 100 mA or 500 mA, depending upon the manufacturer. A laptop PC
that is not connected to an external power adapter is an example of a battery-powered root port hub. If
your laptop is constrained to the 100 mA maximum a USB-1024HLS is not guaranteed to work. In
order to use the product you will need to purchase a self-powered hub.
Note 3: A low-side resettable fuse protects the USB-1024HLS. This is designed to protect the host PC or hub

from an over current condition. Assuming all return currents in sinking applications return via the USB
cable ground signal, the maximum allowable return current is 500 mA. Please include the USB1024HLS unloaded operating current (135 mA) in your power budget.

4-1

USB-1024HLS User's Guide

Specifications

Counter section
Table 2. Counter specifications
Pin name (Note 4)
Counter type
Number of channels
Input source
Input type
Resolution
Schmidt trigger hysteresis
Input leakage current
Maximum input frequency
High pulse width
Low pulse width
Input low voltage
Input high voltage

CTR
Event counter1
CTR screw terminal
TTL, rising edge triggered
32 bits
20 mV to 100 mV
±1 µA
1 MHz
500 ns min
500 ns min
0 V min, 1.0 V max
4.0 V min, 15.0 V max

Note 4: CTR is a Schmitt trigger input

Power
Table 3. Power specifications
Parameter

Conditions

Specification

Supply current (Note 5)
Input power requirements (Note 6)
USB +5 V power available

No load

80mA typ, 135 mA max
4.75 V min, 5.25 V max
4.4 V min, 5.25 V max

USB +5 V power
output current (Note 7)
USB +5 V over-current protection

Measured at "USB +5 V" screw
terminals (pins 10, 14, and 30)
Connected to:! Self-powered hub! Externally-powered root port hub
Resettable fuse[350 mA] – [total output source
current]
Hold current: 350 mA, typical
Trip current: 700 mA typical
Trip/recovery time: 100 mS, max
On resistance: 1.3 Ohms max

Note 5: This is the total (no load) current requirement for the USB-1024HLS.
Note 6: Bus-powered hubs are allowed to provide downstream USB power as low as 4.4 V. Although yourUSB-1024HLS will typically function at this 4.4 V minimum, guaranteed performance requires aminimum power supply voltage of 4.75 V. All self-powered and root port hubs will meet this 4.75 V
minimum.
Note 7: See available source/sink current level in the "Digital input/output" section.

4-2

USB-1024HLS User's Guide

Specifications

GeneralTable 4. General specifications
Parameter

Conditions

Specification

USB controller clock Error

25 °C
0 to 70 °C±30 ppm max±50 ppm max
USB 1.1 low-speed
USB 1.1, USB 2.0

Device type
Device compatibility

Environmental
Table 5. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 70 °C-40 to 70 °C
0 to 90% non-condensing

Mechanical
Table 6. Mechanical specifications
Dimensions
USB cable length
USB cable type

79 mm (L) x 82 mm (W) x 25 mm (H)3 meters max
A-B cable, UL type AWM 2527 or equivalent.
(min 24 AWG VBUS/GND, min 28 AWG D+/D-)
3 meters max

User connection length

Main connector and pin out
Table 7. Connector specifications
Connector type
Wire gauge range

Screw terminal
30-16 AWG
Table 8. Connector pin out

Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Signal NamePort C0Port C1
Port C2Port C3
Port C4Port C5Port C6Port C7
GND
USB +5 V
Port C Pull-up / Pull-down
GND
Port B Pull-up / Pull-down
USB +5 V
Port A Pull-up / Pull-down
GND
GND
GND
GND
CTR

Pin
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

4-3

Signal NamePort A0
Port A1
Port A2
Port A3
Port A4
Port A5Port A6
Port A7
GND
USB +5 V
GND
Port B0
Port B1
Port B2
Port B3
Port B4
Port B5
Port B6
Port B7
GND

Declaration of Conformity
Manufacturer:
Address:

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

Measurement Computing Corporation declares under sole responsibility that the productUSB-1024HLS
to which this declaration relates is in conformity with the relevant provisions of the following standards or otherdocuments:
EU EMC Directive 89/336/EEC: Electromagnetic Compatibility, EN 61326 (1997) Amendment 1 (1998)
Emissions: Group 1, Class A!

EN 55011 (1990)/CISPR 11: Radiated and Conducted emissions.

Immunity: EN61326, Annex A!
!
!

IEC 1000-4-2 (1995): Electrostatic Discharge immunity, Criteria C.
IEC 1000-4-3 (1995): Radiated Electromagnetic Field immunity Criteria A.
IEC 1000-4-8 (1994): Power Frequency Magnetic Field immunity Criteria A.

Power line and I/O tests to IEC 1000-4-4, IEC 1000-4-5, IEC 1000-4-6, and IEC 1000-4-11 were not required.
The device is DC powered from an I/O cable which is less than three meters long.
Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
June, 2004. Test records are outlined in Chomerics Test Report #EMI3902.04.
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