6-1
6
Calibration
DAS-TC/B calibration requires setting the voltage across two of the
board’s test points, which are shown in Figure 6-1. The process requires a
5
½
digit DVM (Digital Voltmeter) or a DMM (Digital Multimeter), such
as a Keithley Instruments 196 DMM.
Figure 6-1. Test Points
Perform the DAS-TC/B calibration process as follows:
1. Referring to the diagram, connect the positive (+) lead of the meter to
TP3 (Test Point 3), the 9.9V reference.
2. Connect the negative (
−
) lead of the meter to TP2, the BGND point.
3. Adjust Potentiometer R97 for a meter reading of 9.9000 ±0.0001V.
DAS-TC/B
Test
Point 5
Test
Point 3
Test
Point 2
Test
Point 6
Potentiometer
R97
