Hioki 3511-50, Instruction Manual, Page: 39 / 140

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4.1 Comparator Function
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NOTE
Chapter 4
Other Functions
4.1 Comparator Function
With the upper and lower limits of the first and second parameters set, the
3511-50 compares measurements with the upper and lower limits and
produces a judgment (HI, IN, or LO)*, which is then displayed on the
comparator judgment display. Moreover, a corresponding signal can be
output via the EXT I/O connector on the rear panel of the 3511-50 unit.
* HI: exceeds the upper limit; IN: within upper and lower limits; LO: below the lower limit
You can set comparator upper and lower limits in the first and second
parameters, respectively. The judgment and the output of EXT I/O are
displayed for each parameter. The AND result of judgment for both first
and second parameters is also output from EXT I/O.
If power is switched off in comparator test mode, switching on the 3511-50
again will start it in comparator test mode.
Switching off power in the upper or lower limit setting mode invalidates
the set upper or lower limit. If this occurs, the unit defaults to the
previous settings.
For parameters for which comparator judgment is unnecessary, the upper
and lower limits can be set to OFF. In such cases, the parameters set to
OFF are not compared for judgment.
Test conditions during comparator execution are as for normal test, with
one exception: the AUTO range is automatically switched to the HOLD
range.