Digital I/O Terminals (Dio0 To Dio7) - Measurement Computing USB-1616FS User Manual

USB-1616FS User's Guide
Input configuration
All of the analog input channels are configured for single-ended input mode. Each analog signal is
referenced to a signal ground (AGND), and requires two wires:
! The wire carrying the signal to be measured connects to CH# IN.
! The second wire connects to AGND.
The input voltage ranges are ±10 V, ±5 V, ±2.0 V, and ±1.0 V. The following image illustrates a typical
single-ended measurement connection.
The following image shows the single-ended measurement data acquired by TracerDAQ's strip chart.
Figure 3-4. TracerDAQ showing single-ended measurement data
For more information on analog signal connections
For more information on single-ended inputs, refer to the Guide to Signal Connections (this document is
available on our web site at www.mccdaq.com/signals/signals.pdf).

Digital I/O terminals (DIO0 to DIO7)

You can connect up to eight digital I/O lines to the screw terminals labeled
configure each digital bit for either input or output. All digital I/O lines are pulled up to USB +5V with a 47
K resistor (default). You can request the factory to configure the resistors for pull-down to ground if
desired.
CH1 IN
AGND1
Figure 3-3. Single-Ended measurement connection
3-5
Functional Details
to . You can
DIO 0 DIO 7