4. Connect test alligator clips into circuit under test.
5. Push the "Test Button"(3-4, Fig. 1) for measurement.
5-4 Power Lock/Manual(off) Switch
Typically, when make the general measurement, always slide
the "Power Lock/Manual(off) Switch"(3-3, Fig. 1) to the
MANUAL(off) position. Then push the "Test Button" will
power on the meter until release the "Test Button"(3-4,
Fig. 1). However if user intend to power on the meter
permanently & making the measurement continuously, then
it should to slide the "Power Lock/Manual(off)
Switch"(3-3, Fig. 1) to the POWER LOCK position.
Attention :
When the measurement the impedance
( resistance ) value less than 1 Mega-
ohm, the period time of " Power Lock
ON " ( power ON permanently ) should
less than 5 minutes, otherwise the
internal circuit may will be overheated.
6. MEASURING CONSIDERATION
FOR Mega OHM TESTING
1. The amount of time during which the test voltage applied
will also affect the reading. With good insulation, the
measured value of insulation resistance will slowly
increase is applied typically. This is due to dielectric
absorption effect of the applied DC voltage on the bulk
insulation resistance.
7