PMD-1208LS User's Guide - LArTPC DocDB

Introducing the PMD-1208LSChapter 1This user's guide contains all of the information you need to connect the PMD-1208LS to your computerand to the signals you want to measure. The PMD-1208LS is part of the Personal Measurement Devicebrand of USB-based data acquisition products.The PMD-1208LS is a USB 1.1 low-speed device supported under Microsoft® Windows® 98 (2 ndedition), Windows ME, Windows 2000, and Window XP. It is designed for USB 1.1 ports, and was testedfor 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 PMD-1208LS," to make sure you are using the latest USB drivers.The PMD-1208LS features eight analog inputs, two 10-bit analog outputs, 16 digital I/O connections, andone 32-bit external event counter. The PMD-1208LS is powered by the +5 volt USB supply from yourcomputer. No external power is required.The PMD-1208LS analog inputs are software configurable for either eight 11-bit single-ended inputs, orfour 12-bit differential inputs. An on-board industry standard 82C55 programmable peripheral interfacechip provides the 16 digital I/O lines in two 8-bit ports. You can configure each digital port independentlyfor either input or output.The PMD-1208LS is shown in Figure 1-1. I/O connections are made to the screw terminals located alongeach side of the PMD-1208LS.Figure 1-1. PMD-1208LS1-1