Continuity Measurement; Lead Compensation - AEMC Megohmmeters 6522 User Manual

Input impedance 400komh

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When the probe is connected, the

instrument's LCD.

NOTE: The remote probe can also be used as a passive probe by simply

touching the probe tip to the test point. It is not necessary to press the test

button.

2.2.3 Continuity Measurement

Continuity measurement measures a low resistance (<10 or 100Ω depending on

the current) at a high current (200 or 20mA).

NOTE: A current of 20mA reduces the power consumption of the instrument,

increasing its battery life. However, the standard IEC 61557 requires 200mA

current for continuity testing.

The Model 6522 can take measurements only at 200mA.

If an external voltage >15V is detected in the system under test during the

continuity measurement, the instrument is protected without a fuse. The

continuity measurement is stopped and the instrument reports an error until the

voltage disappears.



> 2s

Megohmmeter Model 6522/6524

Before checking continuity, you should compensate for the

resistance of the measurement leads. This ensures that the

resistance measurement excludes the resistance in the leads.

To do this, set the rotary switch to

measurement leads and press the

symbol is displayed on the

Ω. Then short-circuit the

button for >2 seconds.

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Megohmmeters 6524