Button Functions; Hold Button; Correction Of Zero In; Dc Measurement - AEMC 670 User Manual

2.4

Button Functions

2.4.1

HOLD Button

• The last reading may be held on the display by pressing
the HOLD button. The HOLD symbol will appear when
this function is activated.
• To deactivate, press the HOLD button a second time.
2.4.2 Correction of Zero in DC measurement
• This function on the Model 675 allows the user to zero out
magnetization effects in DC current measurements.
• This operation must be performed after each high
amplitude current measurement.
• Turn the rotary switch to A
into the clamp, then press the HOLD button (approxi-
mately 2 seconds) until the display shows zero current.
This is also indicated by an audio beep and the symbol
ZERO on the display.
2.4.3

Auto Power OFF

• If there is no activity for approximately 10 minutes, the
clamp will automatically shut down and the
will appear
• To disable Auto Power OFF function, turn the rotary
switch to OFF.
• Press and hold down the HOLD button and set the
rotary switch to any position other than OFF.
• The symbol disappears and Auto Power OFF is
deactivated.
Clamp-on Meter Models 670 and 675
with no conductor inserted
DC,
symbol
9