PeakTech 1610 Mode D'emploi page 42

Zero Button (P 1625)
Press ZERO button to enter the relative mode, the ZERO 
annunciator turns on, zero the display and store the displayed
reading as a reference value. Press and hold down the ZERO
button for 2 seconds to exit the relative mode.
In the relative mode the value shown on the LCD is always The
difference between the stored reference value and the present
reading. For example, if the reference value is 24.000 V and the
present reading is 12,50 V the display will indicate –11,50 V. If
the new reading is the same as the reference value, the display
will be zero. This feature also is made as DCA ZERO
adjustment.
Transformer jaws
Pick up the AC or DC current flowing through the conductor. The
"+" marking on the jaw indicates direction of DC Current existing
on the conductor being tested which follows forward and
vertically with jaws, and reading shown on display is positive.
Peak Button (P 1625)
This measurement function is used to measure the peak value of
a signal. It is useable with AC current measurements. To use
this function select the function and range and press the peak
hold switch. When this is done, the "P" will appear in the display.
Next, by inputting a signal, the peak hold function operates. This
peak hold value is held in digital memory for a long period. To
cancel the function press the peak hold switch once again.
Trigger
Press the lever to open the transformer. When the lever is
released, the jaws will close again.
ZERO (P 1615)
Before taking DCA measurements, push and hold the ZERO
button until display indicates zero. This button does not work on
other functions/ranges.
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