6240B DC Voltage Current Source/Monitor Operation Manual
5.2.10 Calculation Functions
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5.2.10.3
Comparator Calculation
1. Calculation expression
The result of the 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, + (positive) data is judged as HI and - (negative) data
is judged as LO.
•
The comparator calculation is executed against a NULL calculation result when the NULL cal-
culation is ON.
When the NULL calculation result data is over range, + (positive) data is judged as HI and -
(negative) data is judged as LO in the same way.
•
Because the internal measurement and calculation resolutions are smaller than the display reso-
lution, the displayed data may be judged as HI or LO when X = D
L
or X = Du respectively.
2. Calculation result output
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 negative pulses are output to the COMPLETE
OUT output terminal on the rear panel.
3. Operation
•
All the
indicators go ON when the comparator calculation is ON.
(HI),
(GO), or
(LO) indicator goes ON depending on the calculation result of HI, GO, or LO.
•
The setting range for the upper and lower limits is between 0 and
999.999E + 24.
•
The comparator calculation is turned OFF by executing the *RST command.
•
Changing the measurement function does not turn OFF this calculation.
•
When the comparator calculation result meets with the alarm condition, the comparator buzzer
sounds.
Select the parameters,
M) SYSTEM
and
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