YOKOGAWA MY600, User Manual

Page: 44 / 70

41
IM MY600-01EN
2.
Check that voltage is not applied to the circuit under
test. Measure the voltage according to chapter 5,
“Voltage Measurement.”
3. Confirm the voltage that can be applied to the DUT,
and set the range switch to the appropriate range (rated
measurement voltage).
• You can only change the range when you turn
off both the measurement switch and the probe’s
remote switch.
• There is an empty range between the 500 V and
1000 V positions. Note that if the range switch is set
to the empty range, insulation resistance will not be
measured even when you press the measurement
switch.
• When the range switch is set to the 1000 V, an
intermittent buzzer sounds to warn you of the high
voltage output range.
• To switch between the 125 V and 100 V ranges, set
the range switch to the 125 V/100 V position, and
hold down SELECT for at least 1 second. The set
voltage appears on the screen.
4. Connect the probe (black) connected to the EARTH
terminal to the ground terminal of the circuit under test.
If the voltage is 30 V or higher, a live circuit warning
is indicated with a blinking , buzzer, and red
backlight. When the live circuit warning is in effect, the
measurement button is disabled.
5. Apply the tip of the probe (red) connected to the LINE
terminal to the circuit under test, and press both the
measurement switch or the probe’s remote switch.
Measurement will not start if you press only one of the
switches.