5.1 Comparator Measurement Function
50
Executing Comparator Measurements
COMP lit
The comparator measurement function is enabled.
Pressing the COMP key executes comparator decision according to
the settings
Disabling the Comparator Measurement Function
COMP off
The comparator measurement function is disabled.
• Comparator and BIN measurements cannot be executed
simultaneously.
• Auto-ranging is not available for comparator measurements. If
auto-ranging is on when the comparator function is enabled, auto-
ranging is disabled.
• To avoid operating errors, only the following keys are enabled
when the comparator is being used:
SAVE (SHIFT+LOAD), LOAD, STAT, TRIG (for external trigger),
and PRINT (when a printer is connected)
The comparator function must be disabled in order to change the
threshold values.
❖ 5.15 Valid Functions for Each State (Page 75)
• +OF is judged to be Hi, and -OF is judged to be Lo. No decision
occurs in the event of a measurement fault.
• If temperature correction is enabled and the temperature probe is
improperly connected, or if the measured temperature is OF or -
OF, no decision occurs.
• When comparing by reference value/tolerance, upper and lower
thresholds are calculated internally for comparison with measured
resistance.
Therefore, even if the relative display value is the same as a
decision threshold, it may be judged Hi or Lo.
Example: If the reference value is set to 90.000 Ω and the
tolerance is set to 0.012%, the upper threshold is 90.010 Ω. At this
time, a measurement of 90.011 Ω will be displayed as 0.012%, but
because it exceeds the upper threshold, it is judged as Hi.
• If power is turned off while the setting display is active, settings are
ignored, and revert to their former values. If you want to apply the
displayed settings, press the ENTER key.
Upper threshold = Reference value x
Lower threshold = Reference value x
100 + Tolerance [%]
100
100 − Tolerance [%]
100
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