GW Instek GDM-350B - Manual (Page 17)

MEASUREMENT OPERATION
15
Warning:
 If the LCD displays “1”, it indicates the circuit is open or that the resistance
exceeds the maximum range of the meter.
 To maintain the resistance measurement accuracy, remove circuit power and
discharge all high voltage capacitors when measuring resistance.
The test leads cause a resistance drop of 0.1Ω ~0.2Ω. In order to obtain precise
readings for low-resistance measurements, the resistance of the test leads must
be deducted from the measured resistance. Short the test leads and note the
measurement result. Deduct this value from the resistance of the DUT.
Measured Result of DUT – Resistance of test leads = Actual measurement.
 If a resistance reading with shorted test leads is not less than or equal to 0.5Ω,
check for possible problems such as loose test leads or an incorrectly selected
function.
 For resistance measurements greater than 1MΩ, it may take several seconds to
obtain a stable reading.
 Do not input greater than DC 60V and AC 30V to prevent damage and injury.