Teledyne LeCroy AP015 - Manual (Page 14)

ADP015 Current Probe
10 922254-00 Rev A
18. Verify that the 30 A Accuracy is < ±2%.
19. Leave the connection set up for the remaining test.
C. Check Peak Current
CAUTION. This test increases the power dissipated inside the probe. Do
not leave the increased current turned on longer than needed to
complete the test (10 seconds.
1. Increase the power supply voltage until the voltage measured at the
'Current Sense' terminals is > 500 mV. (This corresponds to > 50 A at the
probe head.)
2. Note the probe output voltage. Verify that the voltage remains stable
without significant decrease for 10 seconds before shutting the current
off. Record the value on the line marked '50 A DC Current' on the test
record.
This completes the Performance Verification of the AP015. Complete and file the
results recorded in the AP015 Performance Verification Test Record as required
by your quality procedures. Apply a suitable calibration label to the AP015
housing as required.
Adjustment Procedure
This procedure can be used to adjust the AP015 Current Probe in order to meet
the warranted gain specification. The other parameters verified in the
Performance Verification procedure do not have adjustments associated with
them. This procedure should only be performed if the instrument fails to meet
the Performance Verification tests. If the probe cannot be adjusted to meet the
Performance Verification limits, repair may be necessary.
To ensure instrument accuracy, check the calibration of the AP015 every year.
Before calibration, thoroughly clean and inspect this unit.
Adequate guard bands were designed into this instrument to assure it will meet
or exceed published specifications over the entire operating temperature range.
To continue to meet the environmental specifications, all adjustments must be
performed in a controlled environment with an ambient temperature of
25
±5° C. The instrument must also be at stable operating temperature before
performing adjustments.