DI-148U, DI-148U-SP, and DI–158 Series Hardware Manual
Connecting Input Signals
15
Use the following diagram to connect String Pot Channel 1 (SP1). Refer to your String Pot manual for correct wiring.
Calibrating String Pot Inputs
The String Pot Inputs
must
be calibrated before aquiring signals from the DI-148U-SP in W
IN
D
AQ
Acquisition Soft-
ware. Using the High/Low method and the full scale range of the instrument (±10V) is suggested.
1.
Enter the Low Calibration.
a
In the
Edit
menu click on
Low Calibration...
.
b
Enter
-10
for the
Input Level
and
0
(the string pot at position 0) for the
Low Cal Value
. Enter the Engr.
Units using the proper measurement quantifier (i.e., the Low Cal Value, be it inches, centimeters, etc.) based
on the length of your displacement cable.
2.
Enter the High Calibration.
Interface
Port
Voltage
Wiper
Ground
String Pot
Note: Location of wires or wire terminals will vary based on specific
model of String Pot. Refer to String Pot hardware guide for correct wiring.
