Vanguard EZCT-2000A - Manual (Page 90)

EZCT-2000A USER’S MANUAL REV 1
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5.3 Verifying the EZCT-2000A’s I
x
Sense Circuit Using an External Meter
You can verify the excitation current (I
x
) sensed by the EZCT-2000A by using an external RMS
ampere meter. Follow the steps below to verify the EZCT-2000A’s I
x
sense circuit:
a. Connect the X cables to a power resistor and an RMS ampere meter as shown in Figure
18.
b. Select the EZCT-2000A’s Diagnostics mode (see section 5.1).
c. Press the [PAPER ∧ Contrast] key to raise the V
x
voltage.
d. Verify the I
x
voltage displayed on the EZCT-2000A’s LCD screen against the value
displayed on the external RMS ampere meter.
e. Press the
[STOP]
key to end the test.
Figure 18. EZCT-2000A I
x
Verification Test Connections