AUTORANGING INSULATION TESTER
instruction manual
5
V. MEASURING FUNCTIONS
1. ACV Function:
Turn function selector to voltage range. Connect black test lead to
Lo terminal and red one to the Hi terminal. Connect test lead to the
test circuit in parallel. One can hold the reading by pressing the
HOLD key.
2. DCV Function:
Turn function selector to voltage range. Connect black test lead to
Lo terminal and red one to the Hi terminal. Press the TEST button
to change the mode form ACV to DCV function. Connect test lead
to the test circuit in parallel. One can hold the reading by pressing
the HOLD key.
3. Low Ohm Function and Continuity Function:
Turn function selector to Ohm range. Connect black test lead to Lo
terminal and red one to the Hi terminal. Connect test lead to the
test circuit in parallel. If the reading is less than 40 Ohm, the
continuity beeper will sound.
One may null the lead resistance (under 40 Ohm) by shorting the
test lead than press the test key. When the lead resistance is
recorded a ZERO symbol will display on the LCD. Press TEST key
again to go back to normal operation. If the lead resistance is
great than 40Ω, the “ Err ” error message will show on the display.
Because the test current provided by the meter could reach
200mA, do not use this range to test electronic component like
diode, transistor or fuse.
4. MegaOhm Function:
Turn the function selector to the desired test voltage range. The
LCD will display “----” to indicate the tester is standing by. Connect
black test lead to Lo terminal and red one to the Hi terminal.
Connect test lead to the test circuit in parallel. One may take the
measuring under manual power mode or power lock mode:
