Amprobe AMB-45 Digital-Megohmmeter - Manual (Page 10)

6
MEASURING FUNCTIONS
ACV FUNCTION:
Turn function selector to voltage range. Connect black test lead to Black terminal and red one to
the Red terminal. Connect test lead to the test circuit in parallel. Operator can hold the reading by
pressing the
key.
DCV FUNCTION:
Turn function selector to voltage range. Connect black test lead to Black terminal and red one to the Red
terminal.
Press the 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 key.
LOW OHM FUNCTION AND CONTINUITY FUNCTION:
Turn function selector to Ohm range. Connect black test lead to Black terminal and red one to the Red 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 key. When
the lead resistance is recorded a ZERO symbol will display on the LCD. Press key again to go back to
normal operation. If the lead resistance is great than 40Ω, the error beeping will sound. 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.

Caution:
Before measuring, verify the circuit is not live by voltage function
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 Black terminal and red one to the Red terminal. Connect test lead to the
test circuit in parallel. One may take the measuring under manual power mode or power lock mode: