Fault Indicators - AEMC 5600 User Manual

Fault Indicators

• FAULT - The fault light will illuminate in one of two cases:
1. If the measured resistance is very high in relation to the range.
Switching to a higher range will extinguish the light.
2. If the current output is zero, due to an open circuit or blown fuse.
Check the circuit for probe/clip contact on test sample and
condition of fuses.
• THERMAL PROTECTION - On the 2000µΩ range (10A), thermal
protection of the instrument is provided by an internal thermostat
which interrupts the 10A current during prolonged operation. When
overheated, the thermal protection circuit turns on its respective
indicator light and disables the 10A, 2000µΩ range. The other ranges
may still be used during this condition.
NOTE: To make a rapid test of the internal fuses, short-circuit terminals
C1 and C2. Switch on the instrument using the On/Off button. If the
"Fault" light comes on, at least one of the two fuses is blown.
When using 20 ft spring loaded Kelvin lead (Cat.# 2118.52) on
the 10A range, the fault light may stay on all the time.
Measured values are good.
Micro-Ohmmeter Model 5600
Warning
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