Compliance Products USA, Inc
CAL-Fac-001-MP-CDT 240 Rev 2.3
Page 3 of 13
3.
Zero Volt Adjustment (P3).
3.1.
Connect the Oscilloscope to the BNC 100:1 output of the CDT-240.
3.2.
Set the CDT for the following test:
•
Trigger on POS
•
Delay Test
•
Delay: 3.0 s
•
Line to Gnd measurement
3.3.
Perform a test if necessary so that the CDT is not armed. The oscilloscope should measure 0V on the
BNC connector we expect to get same as
, adjust P3 in order to set this value.
Figure 2. Zero output on BNC connector with CDT-240 not armed.
3.4.
Disconnect the oscilloscope and connect DMM1 to the BNC connector, as it shows it in
Figure 3. BNC – Center (+) , Outside (-).
3.5.
Adjust P3 so that the output is 0.000V
DC
+/- 2mV
DC
on DMM1, in order to get an accurate
measurement.
3.6.
Record the result on section 1 of CAL-Log-001-CDT 240.
