Introducing The Usb-3105; Overview: Usb-3105 Features - Measurement Computing USB-3105 User Manual

Introducing the USB-3105

Overview: USB-3105 features

This user's guide contains all of the information you need to connect the USB-3105 to your computer and to the
signals you want to control. The USB-3105 is part of the Measurement Computing brand of USB-based data
acquisition products.
The USB-3105 is a USB 2.0 full-speed device that is supported under popular Microsoft
systems. The USB-3105 is fully compatible with both USB 1.1 and USB 2.0 ports.
The USB-3105 provides 16 channels of analog voltage output, eight digital I/O connections, and one 32-bit
event counter.
The USB-3105 has four quad (4-channel) 16-bit digital-to-analog converters (DAC). You set the voltage output
range of each DAC channel independently with software for either bipolar or unipolar. The bipolar range is
±10 V, and the unipolar range is 0 to 10 V. The analog outputs may be updated individually or simultaneously.
A bidirectional synchronization connection allows you to simultaneously update the DAC outputs on multiple
devices.
The USB-3105 features eight bidirectional digital I/O connections. You can configure the DIO lines as input or
output in one 8-bit port. All digital pins are floating by default. A screw terminal connection is provided for
pull-up (+5 V) or pull-down (0 volts) configuration.
The 32-bit counter can count TTL pulses.
The USB-3105 is powered by the +5 volt USB supply from your computer. No external power is required. All
I/O connections are made to the screw terminals located along each side of the USB-3105.
Figure 1. USB-3105
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Chapter 1
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Windows operating