Measurement-computing USB-1208LS Manuel d'utilisateur Page 1

USB-1208LS Analog and Digital I/O Document Revision 3 March 2013 © Copyright 2013 User's Guide

USB-1208LS User's Guide Functional Details 10 USB connector The USB connector is on the right side of the USB-1208LS housing. This connector pro

USB-1208LS User's Guide Functional Details 11 The differential mode pinout is shown in Figure 4. Figure 4. Differential mode pinout Signal conn

USB-1208LS User's Guide Functional Details 12 In differential mode, the following two requirements must be met for linear operation:  Any ana

USB-1208LS User's Guide Functional Details 13 Since the analog inputs are restricted to a −10 V to +20 V signal swing with respect to ground, al

USB-1208LS User's Guide Functional Details 14 Refer to the schematic shown in Figure 8. If the switch is set to the +5 V input, Port A0 reads TR

USB-1208LS User's Guide Functional Details 15 Accuracy The overall accuracy of any instrument is limited by the error components within the syst

USB-1208LS User's Guide Functional Details 16 The accuracy plots in Figure 10 are drawn for clarity and are not drawn to scale. Figure 10. ADC

USB-1208LS User's Guide Functional Details 17 Combining these two error sources in Figure 12, we have a plot of the error band of the USB-1208LS

USB-1208LS User's Guide Functional Details 18 Mechanical drawings Figure 13. Circuit board (top) and enclosure dimensions

19 Chapter 4 Specifications All specifications are subject to change without notice. Typical for 25°C unless otherwise specified. Specifications in

2 HM USB-1208LS.docx Your new Measurement Computing product comes with a fantastic extra — Management committed to your satisfaction! Thank you for c

USB-1208LS User's Guide Specifications 20 Table 2. Accuracy, differential mode Range Accuracy (LSB) ±20 V 5.1 ±10 V 6.1 ±5 V 8.1 ±4 V 9.1 ±2.

USB-1208LS User's Guide Specifications 21 Digital input/output Table 7. DIO specifications Parameter Specification Digital type 82C55 Number of

USB-1208LS User's Guide Specifications 22 Non-volatile memory Table 10. Memory specifications Parameter Specification Memory size 8192 bytes Mem

USB-1208LS User's Guide Specifications 23 Mechanical Table 14. Mechanical specifications Parameter Specification Dimensions (L × W × H) 79 × 82

USB-1208LS User's Guide Specifications 24 8-channel single-ended mode Pin Signal Name Pin Signal Name 1 CH0 IN 21 Port A0 2 CH1 IN 22 Port A1 3

Declaration of Conformity Manufacturer: Measurement Computing Corporation Address: 10 Commerce Way Suite 1008 Norton, MA 02766 USA Category

Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton, Massachusetts 02766 (508) 946-5100 Fax: (508) 946-9500 E-mail: [email protected]

3 Table of Contents Preface About this User's Guide ...

USB-1208LS User's Guide 4 Signal connector ...

5 Preface About this User's Guide This user's guide describes the Measurement Computing USB-1208LS data acquisition device and lists device

6 Chapter 1 Introducing the USB-1208LS The USB-1208LS is a USB 1.1 low-speed device supported under popular Microsoft® Windows® operating systems. It

USB-1208LS User's Guide Introducing the USB-1208LS 7 Connecting a USB-1208LS to your computer is easy Installing a data acquisition device has n

8 Chapter 2 Installing the USB-1208LS What comes with your shipment? As you unpack your USB-1208LS, verify that the following components are included

9 Chapter 3 Functional Details Analog input acquisition modes The USB-1208LS can acquire analog input data in three different modes – software paced,