24
2.4 Configuring the Comparator
The instrument provides a comparator function that can be used
with the insulation resistance, low resistance, and PV
:
ranges.
Use of the comparator function simplifies the process of
obtaining a PASS/FAIL judgment.
The comparator function generates PASS (good) and FAIL
(defective) judgments depending on whether the measured
value is greater than or less than a previous set value. The
instrument notifies the user of the judgment result with the
buzzer and backlight (which turns red for a FAIL judgment).
Furthermore, you can view judgment results more closely at
hand by using the L9788-10 Test Lead with Remote Switch
(Red). (The L9788-10 incorporates an LED that turns green for
PASS judgments and red for FAIL judgments.)
For more information about valid comparator settings, see “Valid
judgment reference values” (p.26).
In the insulation resistance and PV
:
ranges, measured values
that are greater than or equal to the judgment reference value
result in a PASS judgment. The buzzer will sound in the event of
a FAIL result.
In the low resistance range, measured values that are less than
or equal to the judgment reference value result in a PASS
judgment. The buzzer will sound in the event of a PASS result.
Comparator settings for each range will be saved, even if the
instrument is turned off.
2.4
Configuring the Comparator
The comparator cannot be used with voltage ranges.
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