6241A/6242 DC Voltage Current Source/Monitor Operation Manual
5.2.9 Calculation Functions
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5.2.9.3 Comparator Calculation
1. Calculation expression
The result of a Comparator calculation is judged as shown below:
Du < X ...................... HI
D
L ≤ X ≤ Du .............. GO
X < D
L ....................... LO
• When the measurement data is over range, + data is judged as HI and - (negative) data is judged
as LO.
• Comparator calculation is executed for a NULL calculation result if the NULL calculation is
ON. When the NULL calculation result data is over range, the judgment is HI if the calculation
result is + and LO in case of -.
• Because the internal measurement resolution and calculation resolution are smaller than the dis-
play resolution, the displayed data may be judged as HI, LO when X = D
L, X = Du respectively.
2. Outputting Calculation Result
The calculation result is output to the output data header and the device event register in the status
register. Also, HI, GO, and LO signals selected with the negative-pulse are output to the COMPLETE
OUT output terminal on the rear panel.
3. Operation
• All the indicators illuminate when the Comparator calculation is ON. , , or
indicator illuminates depending on the calculation result of HI, GO, or LO.
• The range between upper- and lower-limit is between 0 to 999.999E + 24.
• This function is turned OFF by executing the *RST command.
• Changing the measurement function does not turn OFF this function.
• When the Comparator calculation result meets with the alarm condition, it buzzes. Select the
items, M) SYSTEM, 2) Compare Buz on the Menu screen to set the alarm condition.
X
HI
GO
LO
Du
D
L
X: Measurement value
Du: Upper limit value
D
L
: Lower limit value
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