Invalid Data Display
NOTE
Temperature conversion mode
When the temperature conversion function is selected at power on, when the
TC indication on the display is on continuously the converted temperature
value is displayed. When it is blinking, the temperature difference (Δt) is
displayed.
(2) The other display
When the measurement value exceeds the measuring range (30000 count), the
over flow (OF) display is indicated. However, while using the temperature
correction function, this display is indicated when the measuring range
exceeds 99999 count.
When the constant current in the source of current (SOURCE) has any error,
NG display is indicated.
・When the measured resistance value is too big, compared with the measuring
range.
Example:
・When intended to measure 300Ω in the 300mΩ range.
・When the lead wire has been ruptured.
・When the different connection has done among 4-terminals.
・When the leads has opened.
When no measurement has done after turning on the power supply, the
invalid data display is indicated.
An "NG" result is always detected even when not carrying out measurement.
Thus even in the HOLD state, if there is a constant current fault, "NG" on the
display lights with displaying the measurement value being held.
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