User`s manual

Introduction 1
USB-1900 Series
1 Introduction
1.1 Overview
The USB-1900 Series of 16-bit 250 kS/s USB 2.0-based high-per-
formance DAQ modules includes models USB-1901/1902, featur-
ing four different voltage input ranges, and USB-1903, with
additional built-in precision current-to-voltage resistors capable of
direct measurement of current signal from 0 to 20 mA.
The series also delivers 2-CH, 16-bit analog output capable of up
to 1 MS/s update and programmable function I/O. The software
programmable function I/O supports a variety of functions includ-
ing TTL digital I/O, general-purpose timer/counter, and PWM out-
put. The USB-1900 Series’ analog input, analog output, and
function I/O are capable of functioning simultaneously at full
speed.
The modules are USB-powered and equipped with removable
screw-down terminals for easy wiring. The attached multi-func-
tional stand can be used for desktop, rail, or wall mounting.
Suitable for mixed-signal tests, laboratory research, and factory
automation, the USB-1900 Series provides a significant sin-
gle-board solution with optimum integration of multiple tasks at an
affordable price.
1.2 Features
X High-speed USB 2.0
X USB power supply
X 16-CH voltage input and 2-CH voltage output (USB-1902)
X 16-CH voltage input (USB-1901)
X 8-CH current input and 2-CH voltage output (USB-1903)
X Up to 250 kS/s analog input
X Up to 1 MS/s analog output (USB-1902/1903)
X Programmable 8-CH digital input and 4-CH digital output
X Removable screw-down terminal module
X Lockable USB cable for secure connectivity