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USB-1608FS User's Guide
Analog input terminals (CH0 IN - CH7 IN)
You can connect up to eight analog input connections to the screw terminal containing pins 1 to 20 (
through
.) Refer to the pinout diagram on page 3-3 for the location of these pins. We recommend that
CH7 IN
you connect unused analog input terminals to ground terminals during operation. For example, if you are not
using terminal 15 (CH7 IN), connect this terminal to terminal 16 (AGND).
Input configuration
All of the analog input channels are configured for single-ended input mode. 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.
The input voltage ranges are ±10 V, ±5 V, ±2.0 V, ±1.0 V. The following image illustrates a typical single-
ended measurement connection.
Pin 1
CH0 IN
Figure 3-3. Single-Ended measurement connection
3-4
Pin 2
AGND
Functional Details
CH0 IN
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