PMD-1024HLS
Personal Measurement Device™ brand
USB-based Digital I/O Module
User's Guide
© Copyright 2005, Measurement Computing Corporation™
Document Revision 4, May, 2005
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HM PMD-1024HLS.doc
ii
Trademark and Copyright Information
Personal Measurement Device brand, TracerDAQ, Universal Library, InstaCal, Harsh Environment Warranty,
Measurement Computing Corporation, and the Measurement Computing logo, are either trademarks or registered
trademarks of Measurement Computing Corporation.
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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 PMD-1024HLS......................................................................................................... 1-1
PMD-1024HLS block diagram....................................................................................................................... 1-2
Software features ............................................................................................................................................ 1-2
Connecting a PMD-1024HLS to your computer is easy................................................................................. 1-3
Chapter 2
Installing the PMD-1024HLS............................................................................................................. 2-1
What comes with your PMD-1024HLS shipment? ........................................................................................ 2-1
Hardware ....................................................................................................................................................................... 2-1
Software......................................................................................................................................................................... 2-1
Documentation............................................................................................................................................................... 2-2
Unpacking the PMD-1024HLS ...................................................................................................................... 2-2
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 guide
This user's guide explains how to install, configure, and use the PMD-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 that can also help you get the most out of your PMD-1024HLS.
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
are reading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and
others, damaging your hardware, or losing your data.
<#:#>
bold text Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check
italic text
Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those
assigned to registers, bit settings, etc.
boxes. For example:
1. Insert the disk or CD and click the OK button.
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 DAQ Software Quick Start.
Never touch the exposed pins or circuit connections on the board
Where to find more information
The following electronic documents provide information that can help you get the most out of your
Personal Measurement Device™ brand PMD-1024HLS.
MCC's Specifications: PMD-1024HLS (the PDF version of Chapter 4 in this guide) is available on
our web site at www.mccdaq.com/pdfs/PMD-1024HLS.pdf
MCC's DAQ Software Quick Start is available on our web site at
MCC's Guide to Signal Connections is available on our web site at
www.mccdaq.com/signals/signals.pdf
MCC's Universal Library User's Guide is available on our web site at
MCC's Universal Library Function Reference is available on our web site at
MCC's Universal Library for LabVIEW
.
™
User’s Guide is available on our web site at
.
.
The PMD-1024HLS User’s Guide (this document) is available on our web site at
v
Introducing the PMD-1024HLS
This user's guide contains all of the information you need to connect the PMD-1024HLS to your
computer and to the signals you want to measure. The PMD-1024HLS is part of the Personal
Measurement Device brand of USB-based data acquisition products.
Chapter 1
The PMD-1024HLS is a USB 2.0 low-speed module supported under Microsoft® Windows® 98 (2
edition), Windows ME, Windows 2000, and Window XP. 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 , "
1024HLS
The PMD-1024HLS is a high drive, 24-line digital I/O module that includes one 32-bit external event
counter. The PMD-1024HLS 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.
Each digital port can be configured for either input or output. The 74FCT244 outputs are high-drive TTL,
capable of sourcing 15 mA and sinking 64 mA.
The PMD-1024HLS is shown in Figure 1-1. All I/O connections are made to the screw terminals on each
side of the PMD-1024HLS.
," to make sure you are using the latest USB drivers.
2 Installing the PMD-
nd
Figure 1-1. PMD-1024HLS
1-1
PMD-1024HLS User's Guide Introducing the PMD-1024HLS
PMD-1024HLS block diagram
PMD-1024HLS functions are illustrated in the block diagram shown here.
USB 2.0
compliant
interface
USB
Microcontroller
8
Port A
Port B
Screw terminal I/O connector
Figure 1-2. PMD-1024HLS functional block diagram
888
Port CHIPort C
LO
4488
event counter
Discrete, low-
Discrete, lowpower drivers
power drivers
32-bit
1 channel
1
Software features
The following software ships with the PMD-1024HLS free of charge.
InstaCal installation, calibration, and test utility
TracerDAQ™ suite of virtual instruments
SoftWIRE® for Visual Studio® .NET graphical programming
MCC DAQ Components for VS .NET (installed with SoftWIRE® for VS .NET)
For information on the features of InstaCal, TracerDAQ, and SoftWIRE, refer to the DAQ Software
Quick Start booklet that shipped with the PMD-1024HLS.
1-2
PMD-1024HLS User's Guide Introducing the PMD-1024HLS
Connecting a PMD-1024HLS to your computer is easy
Installing a data acquisition device has never been easier.
The PMD-1024HLS relies upon the Microsoft Human Interface Device (HID) class drivers. The HID
class drivers 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 for your PMD-1024HLS. No third-party device driver is required.
The PMD-1024HLS is plug-and-play. There are no jumpers to position, DIP switches to set, or
interrupts to configure.
You can connect the PMD-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 and configures the necessary software. You can connect and power multiple HID
peripherals to your system using 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
Installing the PMD-1024HLS
What comes with your PMD-1024HLS shipment?
As you unpack your PMD-1024HLS, make sure that the following components are included.
Hardware
PMD-1024HLS
Chapter 2
USB cable (2 meter length)
Software
The Measurement Computing Data Acquisition Software CD contains the following software:
InstaCal installation, calibration, and test utility
TracerDAQ suite of virtual instruments
SoftWIRE for VS .NET
SoftWIRE MCC DAQ Components for .NET
2-1
PMD-1024HLS User's Guide Installing the PMD-1024HLS
Documentation
Unpacking the PMD-1024HLS
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the PMD-1024HLS from its packaging, ground yourself using a wrist strap
or by simply 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 by
phone, fax, or e-mail. For international customers, contact your local distributor where you purchased the
PMD-1024LS.
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: techsupport@measurementcomputing.com
Installing the software
Refer to the DAQ Software Quick Start for instructions on installing the software on the Measurement
Computing Data Acquisition Software CD. This booklet is available in PDF at
.
Installing the hardware
Be sure you are using the latest system software
Before you connect the PMD-1024HLS, make sure that you are using the latest versions of the USB
drivers.
Before installing the PMD-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 to address 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-b7fe-e85b688b7f86&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 PMD-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 PMD-1024HLS.
2-2
PMD-1024HLS User's Guide Installing the PMD-1024HLS
When you connect the PMD-1024HLS for the first time, a Found New Hardware popup balloon
(Windows XP) or dialog (other Windows versions) appear as the PMD-1024HLS is detected.
Another Found New Hardware balloon or dialog opens that identifies the PMD-1024HLS as a USB
Human Interface Device.
When the balloon or dialog closes, the LED on the PMD-1024HLS should flash and then remain lit. This
indicates that communication is established between the PMD-1024HLS and your computer
Caution! Do not disconnect any device from the USB bus while the computer is communicating with
the PMD-1024HLS, or you may lose data and/or your ability to communicate with the
PMD-1024HLS.
If the LED turns off
If the LED is lit but then turns off, the computer has lost communication with the PMD-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.
2-3
Functional Details
External components
The PMD-1024HLS has the following external components, as shown in Figure 3-1.
USB connector
LED
Screw terminal banks (2)
Screw terminal
LED
pins 1 to 20
Chapter 3
Screw terminal
pins 21 to 40
Figure 3-1. PMD-1024HLS external components
USB
connector/cable
USB connector
The USB connector is on the right side of the PMD-1024HLS housing. This connector provides +5 V
power and communication. 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 PMD-1024HLS. It uses up
to 5 mA of current and cannot be disabled. explains the function of the PMD-1024HLS LED. Table 3-1
Table 3-1 LED illumination
LED Illumination Indication
Steady green The PMD-1024HLS is connected to a computer or external USB hub.
Blinks continuously Data is being transferred.
Blinks three times Initial communication is established between the PMD-1024HLS and the computer.
3-1
PMD-1024HLS User's Guide Functional Details
Screw terminal wiring
The PMD-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. PMD-1024HLS screw terminal pin numbers
Screw terminal – pins 1-20
The screw terminals on the top edge of the PMD-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 C Pull-up/Pull-down)
Six ground connections (
GND)
Port A Pull-up/Pull-down, Port B Pull-up/Pull-down and
Screw terminal – pins 21-40
The screw terminals on the bottom edge of the PMD-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 Screw terminal
Wire gauge range 16 AWG to 30 AWG
3-2
PMD-1024HLS User's Guide Functional Details
Port A Pull-up / Pull-down
Port B Pull-up / Pull-down
20 CTR
19 GND
18 GND
17 GND
16 GND1514 USB +5 V1312 GND
11 Port C Pull-up / Pull-down
10 USB +5 V
9GND
8Port C7
7Port C6
6Port C5
5Port C4
4Port C3
3Port C2
2Port C1
1Port C0
GND 40
Port B7 39
Port B6 38
Port B5 37
Port B4 36
Port B3 35
GND 31
USB +5 V 30
GND 29
Port B2 34
Port B1 33
Port B0 32
Port A7 28
Port A6 27
Port A5 26
Port A4 25
Port A3 24
Port A2 23
Port A1 22
Port A0 21
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 the location of these pins. You can configure each digital port for either input or output.
When configured for input, you can use the PMD-1024HLS digital I/O terminals to detect the state of any
TTL level input. Refer to the switch shown in Figure and the schematic shown in . If you
set the switch to the +5 V input, Port A0 reads TRUE (1). If you move the switch to GND, Port A0 reads
FALSE.
3-3
Figure 3-4
Figure 3-3. Digital connection of Port A0 detecting the state of a switch
3-3
PMD-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 +5 V connection (pin 30) is on the bottom screw terminal of the PMD-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 PMD-1024HLS and possibly the computer.
Just connecting the PMD-1024HLS to your computer draws 60 mA of current from the USB +5 V
supply. Once you start running applications with the PMD-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 PMD-1024HLS, is the difference between the total current requirement of the PMD-1024HLS (based
on the application), and the allowed current draw of the computer platform.
The following power limits depend on whether you are sourcing current out of the PMD-1024HLS, or
you are sinking current into the PMD-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. For
an application running on a PC or self-powered hub, this value yields a maximum user current of 500 mA
− 60 mA = 440 mA. 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 PMD-1024HLS needs 60 mA from the USB +5 V supply, this leaves you with only 40 mA.
If you want to use 15 mA per DIO line, you can only do so with two DIO lines. 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 PMD-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 would damage the PMD-1024HLS
because the total amount of current is well over the 440 mA maximum (24 DIO × 64 mA = 1536 mA ≈
1.54 A).
3-4
PMD-1024HLS User's Guide Functional Details
If you want to sink the maximum of 64 mA per DIO line, you can only do so with up to six lines (440 mA
÷ 64 mA/line = 6.8 ≈ 6 lines). To sink current with all 24 DIO outputs at any one time, you can sink a
maximum of 18 mA per line.
Ground terminals
The nine ground (GND) connections are identical, and provide a common ground for all PMD-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 the location 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 Pull-up/Pull-down) to support a pull-up or pull-down connection. These terminals configure the
internal 47K resistors on the PMD-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
3-5
PMD-1024HLS User's Guide Functional Details
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
Wiring schematics are shown here for each pull-up/pull-down terminal. Dotted lines represent a pullup or pull-down connection.
USB +5 V
Pull-up
Pin 15
Pull-down
GND
DIO 0 (Port A0)
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)
Port A
Figure 3-7. Schematic showing Port A pull-up/pull-down wiring options
USB +5 V
Pull-up
Pin 13
Pull-down
GND
DIO 0 (Port B0)
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)
Port B
Figure 3-8. Schematic showing Port B pull-up/pull-down wiring options
USB +5 V
Pull-up
Pin 11
Pull-down
GND
DIO 0 (Port C0)
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)
Port C
Figure 3-9. Schematic showing Port C pull-up/pull-down wiring options
3-6
Specifications
Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design.
Digital input/output
Table 4-1. Digital I/O specifications
Digital input type 74ACT373
Digital output type 74FCT244
Number of I/O 24 (port A0 through port C7)
Configuration 2 banks of 8 and 2 banks of 4 or
3 banks of 8
Pull up/pull-down configuration
Input high voltage 2.0 V min, 5.5 V absolute max
Input low voltage 0.8 V max, –0.5 V absolute min
Output high voltage (IOH = -15 mA) 2.4 V min
Output low voltage (IOL=64 mA) 0.55 V max
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) Current sink max: 440 mA/ [number of outputs].
Power up/reset state Input mode (high impedance)
Note 1:
"Self-powered hub" refers to a USB hub with an external power supply. Self-powered hubs
allow a connected 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 PMD-1024HLS can source their per-pin maximum of 15 mA. This
provides a total requirement of 15 mA*24 = 360 mA. Combining this with the PMD-1024HLS
operating current of 60 mA a fully-loaded current draw of 420 mA is realized.
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.
Maximum = 15 mA per output
Per pin maximum = 40 mA/ [number of active outputs].
15 mA max source current for any single output
64 mA max sink current for any single output.
Chapter 4
Note 2:
"Bus-powered hub" refers to a USB hub that derives power directly from the USB +5 V
and does not have its own power supply. These hubs allow a connected USB device to
draw up to 100 mA. Battery-powered 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 you have two options when using a PMD-1024HLS. In order to
take advantage of the full drive capability of 15 mA per pin you will need to purchase a
self-powered hub. Otherwise the total output drive must be de-rated. When de-rated, the
total available source current for the digital outputs is the difference between the unloaded
operating current of the PMD-1024HLS (60 mA) and the 100 mA overall maximum.
Note 3:
A low-side resettable fuse protects the PMD-1024HLS. This is designed to protect the host
PC or hub from an over current condition. Assuming all
applications return via the USB cable ground signal, the maximum allowable return current
is 500 mA. Please include the PMD-1024HLS unloaded operating current (60 mA) in your
power budget.
return currents in sinking
4-1
PMD-1024HLS User's Guide Specifications
Counter section
Table 4-2. Counter specifications
Pin name (Note 4) CTR
Counter type Event counter
Number of channels 1
Input source CTR screw terminal
Resolution 32 bits
Schmidt trigger hysteresis 20 mV to 100 mV
Input leakage current ±1 µA
Maximum input frequency 1 MHz
High pulse width 500 ns min
Low pulse width 500 ns min
Input low voltage 0 V min, 1.0 V max
Input high voltage 4.0 V min, 15.0 V max
Note 4: CTR is a Schmitt trigger input
Power
Table 4-3. Power specifications
Parameter Conditions Specification
Supply current (Note 5) No Load 60 mA
Input power requirements
(Note 6)
USB +5 V power available
USB +5 V power output
current (Note 7)
USB +5 V overcurrent
protection
Note 5:
Note 6:
This is the total (no load) current requirement for the PMD-1024HLS.
Bus-powered hubs are allowed to provide downstream USB power as low as 4.4 V.
4.75 V min, 5.25 V max
Measured at “USB +5 V” screw terminals
(pins 10,14 and 30)
Connected to:
Self-powered hub
Externally-powered root port hub
Connected to
Bus-powered hub
Battery-powered root port hub.
Resettable fuse
4.4 V min, 5.25 V max
[350 mA] – [total output source
current]
[60 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
Although your PMD-1024HLS will typically function at this 4.4 V minimum, guaranteed
performance requires a minimum 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
PMD-1024HLS User's Guide Specifications
General
Table 4-4. General specifications
Parameter Conditions Specification
25 °C ±30 ppm max USB controller clock error
0 to 70 °C ±50 ppm max
Device type
Device compatibility
USB 1.1 low-speed
USB 1.1, USB 2.0
Environmental
Table 4-5. Environmental specifications
Operating temperature range
Storage temperature range -40 to 85 °C
Humidity 0 to 90% non-condensing
0 to 70 °C
Mechanical
Table 4-6. Mechanical specifications
Dimensions 79 mm (L) x 82 mm (W) x 25 mm (H)
USB cable Length 2 meters max
USB cable type
User connection length 3 meters max
A-B cable, UL type AWM 2527 or equivalent. (min 24 AWG VBUS/GND,
min 28 AWG D+/D-)
Main connector and pin out
Table 4-7. Connector specifications
Connector type Screw terminal
Wire gauge range 30-16 AWG
Table 4-8. Connector pin out
Pin Signal Name Pin Signal Name
1 Port C0 21 Port A0
2 Port C1 22 Port A1
3 Port C2 23 Port A2
4 Port C3 24 Port A3
5 Port C4 25 Port A4
6 Port C5 26 Port A5
7 Port C6 27 Port A6
8 Port C7 28 Port A7
9 GND 29 GND
10 USB +5 V 30 USB +5 V
11 Port C Pull-up / Pull-down 31 GND
12 GND 32 Port B0
13 Port B Pull-up / Pull-down 33 Port B1
14 USB +5 V 34 Port B2
15 Port A Pull-up / Pull-down 35 Port B3
16 GND 36 Port B4
17 GND 37 Port B5
18 GND 38 Port B6
19 GND 39 Port B7
20 CTR 40 GND
4-3
Declaration of Conformity
Manufacturer: Measurement Computing Corporation
Address: 16 Commerce Boulevard
Middleboro, MA 02346
USA
Category: Electrical equipment for measurement, control and laboratory use.
Measurement Computing Corporation declares under sole responsibility that the product
PMD-1024HLS
to which this declaration relates is in conformity with the relevant provisions of the following standards
or other documents:
EU EMC Directive 89/336/EEC: Electromagnetic Compatibility, EN 61326 (1997) Amendment 1
(1998)
Emissions: Group 1, Class A
EN 55011 (1998)/CISPR 11: Radiated and Conducted emissions.
Immunity: EN61326, Annex A
EN 61000-4-2 (1995): Electrostatic Discharge immunity, Criteria C.
EN 61000-4-3 (1997): Radiated Electromagnetic Field immunity Criteria A.
EN 61000-4-8 (1995): Power Frequency Magnetic Field immunity Criteria A.
Power line and I/O tests to EN61000-4-4, EN61000-4-5, EN61000-4-6, and EN61000-4-11 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, Vice-President of Design Verification
Measurement Computing Corporation
16 Commerce Boulevard,
Middleboro, Massachusetts 02346
(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com
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