Data Hold
To freeze the LCD reading, press the
HOLD
button. While data hold is active, the
HOLD
icon appears on the LCD. Press the
HOLD
button again to return to normal operation.
DC ZERO (Relative) (EX730 only)
The
DC ZERO
is a relative feature and can be used in any function.
1.
2.
3.
Press the
DC ZERO
button to zero the display. “ZERO” will appear in the display. The
displayed reading is now the actual value less the stored “zero” value.
Press the
DC ZERO
button to view the stored value. “ZERO” will flash in the display.
To exit this mode, press and Hold the
ZERO
button until “ZERO” is no longer in the
display.
Peak Hold
The Peak Hold function captures the peak AC or DC voltage or current. The meter can
capture negative or positive peaks as fast as 1 millisecond in duration.
1.
2.
3.
4.
5.
6.
7.
8.
Turn the function switch to the A or V position.
Use the
MODE
button to select AC or DC (ADC EX730 only).
Allow time for the display to stabilize.
Press and Hold the
PEAK
button until “CAL” appears in the display. This procedure
will zero the range selected.
Press the
PEAK
button,
Pmax
will display.
The display will update each time a higher positive peak occurs.
Press the
PEAK
button again,
Pmin
will display. The display will now update and
indicate the lowest negative peak.
To return to normal operation, press and hold the
PEAK
button until the
Pmin
or
Pmax
indicator switches off.
Note:
If the Function switch position is changed after a calibration the Peak Hold
calibration must be repeated for the new function selected.
LCD Backlight Button
The LCD is equipped with backlighting for easier viewing, especially in dimly lit areas.
Press the backlight button to turn the backlight on. Press again to turn the backlight off.
Note that the meter does have an auto power off feature as described below.
Automatic Power OFF
In order to conserve battery life, the meter will automatically turn off after approximately 25
minutes. To turn the meter on again, turn the function switch to the OFF position and then
to the desired function position.
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EX700 Series Version 3.0 1/05
EXTECH [ EXTECH INSTRUMENTS CORPORATION. ]
