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5
．
Insulation Resistance Test
When measuring, press the
“
Type Select
”
button to select the test type as
“
Insulation
Resistance
”
, and clamp the measured insulation resistance like clamp the varistor as
described above.Press the
“
Start Test
”
button to start the test. In the lower right corner of
the screen, there is a
“
in progress...
”
message. The test will stop automatically after about
15 seconds from the start of the test. If you want to interrupt the test in advance, you can
press the
“
Exit
”
button directly.
6
．
Backlight Control
After booting up, press and hold the
“
Exit
”
button to enter the backlight brightness
adjustment page. Press the
“
”
and
“
”
arrow keys to adjust the backlight brightness.
7
．
Qualification Judgment Setting
After booting up, press the
“
OK
”
button to enter the qualification judgment mode. At
this time, you can see that the bottom text box on the screen is flashing, indicating that the
item can be set.Press the "
" or "
" (short press plus or minus 1 when the upper and
lower limits are adjusted, long press plus or minus 50) to adjust the parameters, press the
"
" or "
" key to change the cursor position.When the qualification judgment state is
adjusted to the "on" state, the qualification judgment can be turned on, otherwise the
qualification judgment is turned off.The right side of "U:" is the judgment voltage range,
the value in the left box is the lower limit of the judgment, and the right is the upper limit
value.When the test is completed, if the measured voltage is within this range, it means
qualified.
“
Pass
”
will be displayed in the
“
Status
”
box and the buzzer will sound
once,otherwise,
“
Fail
”
is displayed and the buzzer sounds three times. As shown below:
