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6240B DC Voltage Current Source/Monitor Operation Manual

5.2.10 Calculation Functions

5-56

5.2.10.3 Comparator Calculation

1. Calculation expression

The result of the comparator calculation is judged as shown below:

Du < X ...................... HI

 X  Du .............. GO

X < D

....................... 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

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

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: Measurement value

Du: Upper limit value

: Lower limit value

ADCMT 6240B User Manual

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