Measurement Specialties Computer Hardware PMD 1024HLS User Manual

Download from Www.Somanuals.com. All Manuals Search And Download.  
Your new Measurement Computing product comes with a fantastic extra —  
Management committed to your satisfaction!  
Refer to www.mccdaq.com/execteam.html for the names, titles, and contact information of each key executive at  
Measurement Computing.  
Thank you for choosing a Measurement Computing product—and congratulations! You own the finest, and you can now  
enjoy the protection of the most comprehensive warranties and unmatched phone tech support. It’s the embodiment of our  
two missions:  
ƒ
To offer the highest-quality, computer-based data acquisition, control, and GPIB hardware and software  
available—at the best possible price.  
ƒ
To offer our customers superior post-sale support—FREE. Whether providing unrivaled telephone technical and  
sales support on our latest product offerings, or continuing that same first-rate support on older products and  
operating systems, we’re committed to you!  
Lifetime warranty: Every hardware product manufactured by Measurement Computing Corporation is warranted  
against defects in materials or workmanship for the life of the product. Products found defective are repaired or replaced  
promptly.  
Lifetime Harsh Environment Warranty®: We will replace any product manufactured by Measurement Computing  
Corporation that is damaged (even due to misuse) for only 50% of the current list price. I/O boards face some tough  
operating conditionssome more severe than the boards are designed to withstand. When a board becomes damaged, just  
return the unit with an order for its replacement at only 50% of the current list price. We don’t need to profit from your  
misfortune. By the way, we honor this warranty for any manufacturer’s board that we have a replacement for.  
30 Day Money Back Guarantee: You may return any Measurement Computing Corporation product within 30 days  
of purchase for a full refund of the price paid for the product being returned. If you are not satisfied, or chose the wrong  
product by mistake, you do not have to keep it. Please call for an RMA number first. No credits or returns accepted  
without a copy of the original invoice. Some software products are subject to a repackaging fee.  
These warranties are in lieu of all other warranties, expressed or implied, including any implied warranty of  
merchantability or fitness for a particular application. The remedies provided herein are the buyer’s sole and exclusive  
remedies. Neither Measurement Computing Corporation, nor its employees shall be liable for any direct or indirect,  
special, incidental or consequential damage arising from the use of its products, even if Measurement Computing  
Corporation has been notified in advance of the possibility of such damages.  
HM PMD-1024HLS.doc  
ii  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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.  
SoftWIRE is a registered trademark of SoftWIRE Technology, Inc.  
Windows, Microsoft, and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation.  
LabVIEW is a trademark of National Instruments. All other trademarks are the property of their respective owners.  
Information furnished by Measurement Computing Corporation is believed to be accurate and reliable. However, no  
responsibility is assumed by Measurement Computing Corporation neither for its use; nor for any infringements of patents  
or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any  
patent or copyrights of 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.  
Notice  
Measurement Computing Corporation does not authorize any Measurement Computing Corporation product  
for use in life support systems and/or devices without the written approval of the CEO of Measurement  
Computing Corporation. Life support devices/systems are devices or systems which, 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 in injury. 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 of people.  
iii  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Table of Contents  
Chapter 1  
Chapter 2  
Chapter 3  
Chapter 4  
iv  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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.  
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:  
ƒ The InstaCal® installation procedure is explained in the DAQ Software Quick Start.  
ƒ 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.  
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
MCC's Specifications: PMD-1024HLS (the PDF version of Chapter 4 in this guide) is available on  
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  
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 LabVIEWUser’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
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Chapter 1  
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.  
The PMD-1024HLS is a USB 2.0 low-speed module supported under Microsoft® Windows® 98 (2nd  
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.  
1024HLS," to make sure you are using the latest USB drivers.  
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.  
Figure 1-1. PMD-1024HLS  
1-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
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  
32-bit  
event counter  
USB  
Microcontroller  
1 channel  
8
1
8
Port A  
8
8
Port B  
8
8
Discrete, low-  
power drivers  
Port C Port C  
HI  
LO  
4
4
Screw terminal I/O connector  
Figure 1-2. PMD-1024HLS functional block diagram  
Software features  
The following software ships with the PMD-1024HLS free of charge.  
ƒ
ƒ
ƒ
ƒ
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
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.  
ƒ
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.  
ƒ
ƒ
ƒ
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.  
ƒ
ƒ
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Chapter 2  
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  
ƒ
PMD-1024HLS  
ƒ
USB cable (2 meter length)  
Software  
The Measurement Computing Data Acquisition Software CD contains the following software:  
ƒ
ƒ
ƒ
ƒ
InstaCal installation, calibration, and test utility  
TracerDAQ suite of virtual instruments  
SoftWIRE for VS .NET  
SoftWIRE MCC DAQ Components for .NET  
2-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
PMD-1024HLS User's Guide  
Installing the PMD-1024HLS  
Documentation  
In addition to this hardware user's guide, you should also receive the DAQ Software Quick Start  
(available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf). Read this booklet  
completely before installing any software and hardware.  
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.  
ƒ
ƒ
ƒ
Phone: 508-946-5100 and follow the instructions for reaching Tech Support.  
Fax: 508-946-9500 to the attention of Tech Support  
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  
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  
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Chapter 3  
Functional Details  
External components  
The PMD-1024HLS has the following external components, as shown in Figure 3-1.  
ƒ
ƒ
ƒ
USB connector  
LED  
Screw terminal banks (2)  
Screw terminal  
pins 1 to 20  
LED  
Screw terminal  
pins 21 to 40  
USB  
connector/cable  
Figure 3-1. PMD-1024HLS external components  
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. Table 3-1 explains the function of the PMD-1024HLS LED.  
Table 3-1 LED illumination  
LED Illumination  
Indication  
Steady green  
The PMD-1024HLS is connected to a computer or external USB hub.  
Data is being transferred.  
Blinks continuously  
Blinks three times  
Initial communication is established between the PMD-1024HLS and the computer.  
3-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
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:  
ƒ
ƒ
ƒ
ƒ
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)  
ƒ
Six ground connections (GND)  
Screw terminal – pins 21-40  
The screw terminals on the bottom edge of the PMD-1024HLS (pins 21 to 40) provide the following  
connections:  
ƒ
ƒ
ƒ
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
PMD-1024HLS User's Guide  
Functional Details  
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 3-3 and the schematic shown in Figure 3-4. 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.  
Figure 3-3. Digital connection of Port A0 detecting the state of a switch  
3-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
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.  
ƒ
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
PMD-1024HLS User's Guide  
Functional Details  
ƒ
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 pull-  
up or pull-down connection.  
USB +5 V  
DIO 0 (Port A0)  
Pull-up  
DIO 1 (Port A1)  
DIO 2 (Port A2)  
Pin 15  
DIO 3 (Port A3)  
DIO 4 (Port A4)  
DIO 5 (Port A5)  
Port A  
Pull-down  
DIO 6 (Port A6)  
DIO 7 (Port A7)  
GND  
Figure 3-7. Schematic showing Port A pull-up/pull-down wiring options  
USB +5 V  
DIO 0 (Port B0)  
Pull-up  
DIO 1 (Port B1)  
DIO 2 (Port B2)  
Pin 13  
DIO 3 (Port B3)  
DIO 4 (Port B4)  
DIO 5 (Port B5)  
Port B  
Pull-down  
DIO 6 (Port B6)  
DIO 7 (Port B7)  
GND  
Figure 3-8. Schematic showing Port B pull-up/pull-down wiring options  
USB +5 V  
DIO 0 (Port C0)  
Pull-up  
DIO 1 (Port C1)  
DIO 2 (Port C2)  
Pin 11  
DIO 3 (Port C3)  
DIO 4 (Port C4)  
DIO 5 (Port C5)  
Port C  
Pull-down  
DIO 6 (Port C 6)  
DIO 7 (Port C7)  
GND  
Figure 3-9. Schematic showing Port C pull-up/pull-down wiring options  
3-6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Chapter 4  
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  
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.  
Input high voltage  
Input low voltage  
2.0 V min, 5.5 V absolute max  
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)  
Source current – (Note 1)  
ƒ Self -powered hub  
0.55 V max  
Maximum = 15 mA per output  
ƒ Externally-powered root port hub  
Source current – (Note 2)  
ƒ Bus-powered hub  
Per pin maximum = 40 mA/ [number of active outputs].  
15 mA max source current for any single output  
ƒ Battery-powered root port hub.  
Sink current - (Note 3)  
Current sink max: 440 mA/ [number of outputs].  
64 mA max sink current for any single output.  
Input mode (high impedance)  
Power up/reset state  
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.  
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 return currents in sinking  
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.  
4-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
PMD-1024HLS User's Guide  
Specifications  
Counter section  
Table 4-2. Counter specifications  
CTR  
Pin name (Note 4)  
Counter type  
Event counter  
1
Number of channels  
Input source  
CTR screw terminal  
32 bits  
Resolution  
Schmidt trigger hysteresis  
Input leakage current  
Maximum input frequency  
High pulse width  
Low pulse width  
20 mV to 100 mV  
±1 µA  
1 MHz  
500 ns min  
500 ns min  
Input low voltage  
Input high voltage  
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 4-3. Power specifications  
Parameter  
Conditions  
Specification  
Supply current (Note 5)  
No Load  
60 mA  
Input power requirements  
(Note 6)  
4.75 V min, 5.25 V max  
USB +5 V power available  
Measured at “USB +5 V” screw terminals  
(pins 10,14 and 30)  
4.4 V min, 5.25 V max  
USB +5 V power output  
current (Note 7)  
Connected to:  
ƒ Self-powered hub  
[350 mA] – [total output source  
current]  
ƒ Externally-powered root port hub  
Connected to  
[60 mA] – [total output source  
current]  
ƒ Bus-powered hub  
ƒ Battery-powered root port hub.  
Resettable fuse  
USB +5 V overcurrent  
protection  
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 PMD-1024HLS.  
Note 6: Bus-powered hubs are allowed to provide downstream USB power as low as 4.4 V.  
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
PMD-1024HLS User's Guide  
Specifications  
General  
Table 4-4. General specifications  
Parameter  
Conditions  
Specification  
USB controller clock error  
25 °C  
±30 ppm max  
0 to 70 °C  
±50 ppm max  
Device type  
USB 1.1 low-speed  
USB 1.1, USB 2.0  
Device compatibility  
Environmental  
Table 4-5. Environmental specifications  
Operating temperature range  
Storage temperature range  
Humidity  
0 to 70 °C  
-40 to 85 °C  
0 to 90% non-condensing  
Mechanical  
Table 4-6. Mechanical specifications  
Dimensions  
79 mm (L) x 82 mm (W) x 25 mm (H)  
USB cable Length  
USB cable type  
2 meters max  
A-B cable, UL type AWM 2527 or equivalent. (min 24 AWG VBUS/GND,  
min 28 AWG D+/D-)  
User connection length  
3 meters max  
Main connector and pin out  
Table 4-7. Connector specifications  
Connector type  
Screw terminal  
30-16 AWG  
Wire gauge range  
Table 4-8. Connector pin out  
Pin  
1
2
3
4
5
6
7
8
Signal Name  
Port C0  
Port C1  
Port C2  
Port C3  
Port C4  
Port C5  
Port C6  
Port C7  
GND  
USB +5 V  
Port C Pull-up / Pull-down  
Pin  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
Signal Name  
Port A0  
Port A1  
Port A2  
Port A3  
Port A4  
Port A5  
Port A6  
Port A7  
GND  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
USB +5 V  
GND  
GND  
Port B0  
Port B1  
Port B2  
Port B3  
Port B4  
Port B5  
Port B6  
Port B7  
GND  
Port B Pull-up / Pull-down  
USB +5 V  
Port A Pull-up / Pull-down  
GND  
GND  
GND  
GND  
CTR  
4-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Declaration of Conformity  
Manufacturer:  
Address:  
Measurement Computing Corporation  
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  
ƒ
EN 55011 (1998)/CISPR 11: Radiated and Conducted emissions.  
Immunity: EN61326, Annex A  
ƒ
ƒ
ƒ
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Measurement Computing Corporation  
16 Commerce Boulevard,  
Middleboro, Massachusetts 02346  
(508) 946-5100  
Fax: (508) 946-9500  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Leica Camera Lens 11602 User Manual
Leica Projection Television CM1950 User Manual
LG Electronics Cell Phone C1300 User Manual
Liebert Surge Protector Power Strips User Manual
Lightolier Work Light A E User Manual
Lincoln Electric Welding System X Tractor 1GC User Manual
Makita Air Compressor MAC2400 User Manual
Melissa Food Warmer 750 024 User Manual
Metra Electronics Automobile Accessories 99 7311 User Manual
Metra Electronics Automobile Accessories 99 7404 User Manual