PMD-1024HLS Personal Measurement Device™ brand USB-based Digital I/O Module User's Guide Document Revision 4, May, 2005 © Copyright 2005, Measurement Computing Corporation™
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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 ............
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.
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.
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 1 channel USB Microcontroller 8 1 8 Port A 8 Port B 8 8 8 Port C Port C HI LO 4 Discrete, lowpower drivers 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.
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.
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 PMD-1024HLS 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 .
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.
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.
Chapter 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 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.
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.
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 A5 Port 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 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CTR GND GND GND GND Port A Pull-up / Pull-down USB +5 V Port B Pull-up / Pull-down GND Port C Pull-up / Pull-down USB +5 V GND Port C7 Port C6 Port C5 Port C4 Port C3 Port C2 Port C1 Port C0 PMD-1024HLS User's Guide Digital I/O
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.
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.
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.
Chapter 4 Specifications Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Digital input/output Table 4-1.
PMD-1024HLS User's Guide Specifications Counter section Table 4-2. Counter specifications Pin name (Note 4) Counter type Number of channels Input source Resolution Schmidt trigger hysteresis Input leakage current Maximum input frequency High pulse width Low pulse width Input low voltage Input high voltage Note 4: CTR Event counter 1 CTR screw terminal 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 CTR is a Schmitt trigger input Power Table 4-3.
PMD-1024HLS User's Guide Specifications General Table 4-4. 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 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.
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 16 Commerce Boulevard, Middleboro, Massachusetts 02346 (508) 946-5100 Fax: (508) 946-9500 E-mail: info@mccdaq.com www.mccdaq.
