Page 48 of 85 Operation
2.11 PRESET Test Parameters
A number of initial parameters or default conditions may be programmed and stored as the
‘power-up’ conditions. On the Sentry Plus Series instruments, this function is labeled PRESET
and is accessible on the STAND BY display.
The PRESET values are stored with each programmed test. Therefore each memory location
may have different PRESET values. It is important to set the PRESET values prior to storing a
test program.
Table 2-3 lists the Sentry Plus Series PRESET test parameters including parameter range and
initial (default) value.
Table 2-3: PRESET Test Parameters
Parameter Range Initial
(Default)
Value
Description
AC-V FREQ. 50 or 60Hz 60Hz Set frequency for AC Hipot test
SOFT. AGC ON or OFF ON Set software automatic gain control function
ON or OFF
WV AUTO RANGE ON or OFF OFF Set hipot auto range function ON or OFF
IR AUTO RANGE ON or OFF ON Set resistance auto range function ON or OFF
GFI ON or OFF ON Set ground fault interrupt to trip at 0.5mA
FAIL RESTART ON or OFF OFF Fail continue steps
2.11.1 AC-V FREQ.
The AC-V Frequency setting allows the user to select the line frequency for the AC hipot test.
The range of AC-V Freq. is 50 or 60Hz and the instrument default setting is 60Hz.
2.11.2 SOFTWARE AGC
The Software Automatic Gain Control (SOFT AGC) setting allows the option of correcting the
output voltage when ON. This is satisfactory when measuring resistors but under special
circumstances when measuring large capacitive devices it is best to select Software AGC OFF.
The default value is ON.
2.11.3 WV AUTO RANGE
The WV Auto Range setting allows the option of using the full scale current range (ON) or using
the user programmed maximum current limit (OFF) during a withstand voltage (hipot) test. The
low current range (3mA full scale) results in increased measurement resolution. The default
value of WV Auto Range is OFF.
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