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G
– Gain
Displays and opens the gain value for change. If the displayed value is to be retained, simply press ENTER
to accept the current value. Otherwise, enter the new value then press ENTER. Acceptable range is 10
through 100. Default is 100. The gain value specifies the gain as a percentage of maximum sensitivity. 100
is maximum sensitivity, 10 is 10% of maximum sensitivity.
A change in gain affects both the dark reading sensitivity and the peak reading sensitivity.
The gain value is recorded in non-volatile memory and is retained through power cycling of the LH200.
L
– Leak Limit
Displays and opens the leak limit value for change. If the displayed value is to be retained, simply press
ENTER. Otherwise, enter the new value then press ENTER. Acceptable range is from 1 to 4000. The
default is 500. If the peak signal that occurs during the flash period exceeds the leak limit, the report LED is
set to red unless the LED is already amber from the reporting of a dark fault. The RESULT output is turned
off (reject state).
If the peak signal does not exceed the leak limit and neither the dark average nor the dark spread exceed
their respective limits, the LED is set to green and the RESULT output is set high.
The leak limit is recorded in non-volatile memory and is retained through power cycling of the LH200.
R
– Reports
The "R" command displays the currently enabled reports to be output for display over the serial port. The
value of each enabled parameter is displayed at the end of each test cycle. The parameters display in the
order in which the reports are listed when "R" is entered.
After the enabled reports are listed, the LH200 asks if the user wishes to change the selection of enabled
reports: Change? (Y/N). If "N" is entered, no change is made to the enabled list. If "Y" is entered, the list of
available reports is displayed, one at a time, to allow the user to enable the report (enter "Y") or disable the
report (enter "N"). A typical scenario might be as follows:
Dark Average (Y/N) Yes
Dark Spread (Y/N) No
Peak Value (Y/N) Yes
Leak Factor (Y/N) No
Temperature (Y/N) No
Result Flags (Y/N) Yes
*(R command entered here)
Enabled Reports:
Dark Average
Peak Value
Result Flags
Change? (Y/N) (N entered here)
*
The selection of reports is recorded in non-volatile memory and is retained through power cycling of the
LH200.
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