The power socket of the back panel shall be connected under the specified supply voltage.
The power socket shall be equipped with earth wire.
After inspecting the wiring correctly, the instrument switch on the front panel shall be turned
on, so that the instrument enters the measurement state. Power the load on and the required
measurement value will be read on the display device of the front panel after the load works
stably.
Attention: the instrument shall enter the stable state after being heated up for 15 minutes;
there must be more than 10 seconds before it is powered on after the instrument is powered off. It
is strictly forbidden to turn the switch on and off repeatedly within short time, otherwise the
instrument service life will be shortened and there might be instrument failures. After the
measurement in the current day, the instrument shall be powered off and the socket shall be pulled
out to prevent the instrument damages caused by the possible lightning stroke.
V. Sorting function
During the finished product inspection on the production line, a large number of finished
products with the same specifications are always tested to judge the quality of this batch. To
improve the test efficiency, a certain range can be set inside the instrument to judge whether the
products are qualified or not, so that the operating staff needn’t to read or judge, which has
reduced the workload of the operating staff and greatly improved the test efficiency. This is called
the sorting function of the instrument.
To get the correct sorting results, the instrument must be set with the correct parameters.
Attention: products from different batches might have the different qualification judgment
parameters; hence the instrument must be re-set.
This instrument is capable of setting the upper and lower limits of the tested current, power
and PF value. In the sorting test, the tested pieces are qualified if the test values of current, power
or PE value are smaller than the set upper limits and larger than the set lower limits; also, the
tested pieces are qualified when the “qualified” light on the instrument panel is on.
The tested pieces are unqualified when the test values of current or power of are larger than
the set upper limits or smaller than the set lower limits; the “qualified” light is off and the buzzer
alarms to remind the operators.
If the operators don’t want to hear the buzzer alarm, they can press the “sound proof” key;
after which, the buzzer will not alarm but the “qualified” indicator will be normally on if the tested
data are qualified.
1. About the functional keys
“SETUP” key: when the key is pressed for the first time, the instrument will enter the setup
state from the measurement state; afterwards, a set parameter will be confirmed by each press
while the instrument will continue to set the next parameter. The instrument will automatically
withdraw from the setting state and return to the measurement state if the key is pressed again
after all parameters are set.
“ ↑ /LOCK” key: being pressed at the setting state, data of the flicker bit will cyclically
change as 0→1→2→3→···→9→0; being pressed at the standby state, instrument will be locked
or unlocked!
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