Page 60 of 85 Operation
EN50191 (The Erection and Operation of Electrical Test Installations) specifies safety guidelines
for both the test equipment and stations used in production lines, laboratories, test houses and
other test environments. The 3mA AC/5mA DC leakage current limit is just one electrical safety
measure in attempting to specify ‘full protection from live parts’ for the operator and the DUT.
2.15.2.4 DC 50V AGC
The Automatic Gain Control (AGC) circuit is used to keep the output signal of a circuit constant
as the amplitude of the input signal varies. So when the DC 50V AGC function is ON, the output
voltage is held constant at 50V for a DC hipot test. The DC 50V AGC function can be set ON or
OFF and the initial default setting is ON. This applies to a programmed voltage of 50V only.
NOTE:
Only in highly specialized applications should the DC 50V AGC function be set to OFF. The default value is ON
because in normal test modes, it is necessary to keep the output signal constant as the amplitude of the input signal
varies to obtain stable results.
2.15.3 OPTION
Within the OPTION function is the multi-link parameter. The multi-link function is not available
in the current software version. This option may be available in future software updates.
2.15.4 CALIBRATION
The CALIBRATION function requires a password to enter the instrument routine. Only
qualified service personnel with NIST traceable standards should perform instrument calibration.
Refer to paragraph 4.3 for the full Sentry Plus Series calibration procedure.
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