Digital Display Features - AEMC 3710 User Manual

Digital Display Features

Figure 3
Displayed when the beeper is active. To turn the beeper On/Off,
push ON & Ω together at power-up. The beeper is active when
displayed.
Displayed when the HOLD function is activated. This function
locks the present displayed value. During HOLD: A, Ω, and
HOLD
Alarm functions are deactivated. The Memory function may still
be used.
Indicates that the jaws of the instrument are not properly
closed. The Open Jaw indication is present only in the Ω Mode.
Check for foreign matter in the jaw mating surface.
In the Ω function, this symbol indicates the presence of exces-
sive stray noise in the ground electrode under test. This symbol
NOISE will be present if noise signals reach an amplitude of approx. 5
A or 50 V. Resistance measurement values are no longer valid.
The beeper is also activated.
Displayed when measured resistance is below 1 Ω. This may
indicate that grounding electrode you are clamped onto is
continuous with itself (the instrument is measuring a metallic
R 1
loop and not the ground electrode resistance). In this situation,
electrode resistance measurements may not be valid.
Current measurement mode.
mA, A
Ground resistance measurement mode.
Ground Resistance Tester Models 3710/3730
NOISE
R 1
HOLD
m A
MEM
+
MR
—
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