Screw Terminals; Signal Connections; Analog Input; Digital I/O - Measurement Computing USB-7202 User Manual

USB-7202 User's Guide

Screw terminals

Screw terminal connections in shown in Figure 4.
Use 16 AWG to 30 AWG when making screw terminal connections.

Signal connections

Analog input

You can connect up to eight analog input connections to screw terminals
unused analog input terminals to ground terminals during operation. All AI channels are configured for
single-ended input mode. The input voltage ranges are ±10 V, ±5 V, ±2.0 V, ±1.0 V.
Each analog signal is referenced to 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.


Digital I/O

You can connect up to eight digital I/O lines to screw terminals
as either input or output. When configured for input, the digital I/O terminals can be used to detect the state of
any TTL-level input.
Pull-up/down configuration
The digital pins are configurable via jumper
On power up and reset the DIO pins are driven high.
Figure 4. Screw terminal pinout
for pull-up to USB +5 V (HI) or pull-down to ground (LO).
JP1
Figure 5. Jumper JP1 configuration
13
through
CH0 IN
to . Each digital bit is configurable
DIO0 DIO7
Functional Details
. Connect
CH7 IN