Instructions

Adjustment Procedure
CP150-OM-E Rev C 6-3
Figure 6-1. LF Accuracy Adjustment Set Up
4. Connect the Current Sense terminals of the 500 Turn Calibra-
tion Loop to the voltage inputs of DMM #2
5. Set both DMMs to measure AC Volt.
6. With the CP150 removed from any signal and the slider
returned to the LOCKED position, degauss the probe by
pressing the DEGAUSS button on the oscilloscope, (located
on the coupling menu), twice.
7. Open the CP150 jaws and position the probe input around
the 500 Turn loop. Close and LOCK the slider.
8. Adjust the Function Generator voltage until the voltage mea-
sured at the 'Current Sense' terminals (DMM #2) is 10 mV ±
0.01 mV. (This corresponds to 10 A at the probe head).
9. Adjust the center variable resistor on the probe head until the
voltage measured on DMM #1 is close to 10X the voltage
measured on DMM #2.
10. Verify that the measured voltage is between 99 mV and
101 mV.
11. Disconnect the probe from the test set-up.
DMM #2
Current Probe
Oscilloscope
DMM #1
500 Turn
Current Loop
ProBus Extender
Function Generator