Product Manual

382357 V2.2 09/10 11
Troubleshooting
1. Snap the jaws open and closed two or three times before turning the meter on
2. Do not clamp on to any device during the power-up initialization sequence.
3. Snap the jaws two or three times after clamping on to the ground electrode or rod.
4. Slight amounts of drift may occur at high resistance measurements; this is normal and
should not be cause for concern.
Blank display or any failure mode
Replace the battery before proceeding.
Start-up Initialization Failure
The start-up calibration will continue indefinitely if the jaws are open or dirty. Check that
the jaws’ mating surfaces are clean. Do not open the jaws while the initialization sequence
is running.
Noise on the Ground Electrode or Rod
If noise is present (over 3A or 30V) on the ground electrode or rod, the word “NOISE“ will
appear on the display and readings can no longer be considered accurate. Before the
meter can be used accurately, the noise problem must be addressed.
Reference Test Loop
The reference test loop is a set of resistors that provides a means to check the
performance of the meter.
1. Open the measurement jaws and check that the mating surfaces are clean and free of
dust, dirt, or any foreign substances. Clean if necessary.
2. Clamp the meter around the reference loop as shown in the diagram.
3. Give the meter a few seconds to settle and read the measurement. The meter should
display approximately the same value as marked on the reference loop, taking into
consideration the accuracy listed in the specification chart. If the readings are not
similar to what is marked on the reference loop, consult the Trouble Shooting and
Maintenance sections of this manual.