Chapter II
X02137D00 - Ed. 3 - 04/16
Intrinsically safe portable digital multimeter
35
4.2. RANGE
key
x
In AUTO mode, to switch to MANUAL mode (short press).
x
In MANUAL mode, to select the next range (short press) or return to AUTO mode (long
press).
Measurements concerned : voltages, capacitance, resistance, currents.
x
When making time measurements (frequency, duty cycle, pulse width, pulse count) : if
the range change made during previous measurements (Voltage or Current) was in
manual mode, it may be necessary to adapt this measurement range to the signal level
injected at the input. This is why the RANGE key is used to change from one range
(Voltage or Current) to the next range. The new range is then displayed for 2 seconds.
4.3. REL
key
Short press :
mode REL, the last value measured becomes the reference value
derived from subsequent measurements.
Long press :
When in REL mode, a long press displays the reference being used.
This value may be adjusted using the SEL/ON key (selection of digits
and a sign) and the RANGE key (increment the selected digit).
4.4. PK+/-
key
The fast positive or negative peak measurement functions (
t
1 ms) can be accessed by
repeatedly pressing this key in the V
DC
, mV
DC
, and mA
DC
functions.
4.5. HOLD
key
Short press :
Fixes the display on the current value.
Long press :
Accesses or quits the autostore mode. Can be accessed in the V
DC
, mV,
V
AC
positions.
Autostore
Set the probes on the point to be measured. An audio signal indicates if the measurement is
stable. When you remove the probes, a second audible signal indicates that this stable
value displayed has been stored.
4.6. ZOOM
key
You can press this key to expand the bargraph readout five times for positive measurements
and eleven times for bipolar measurements, one centred around zero (centre zero mode).
Adjusts ohm-value references in dB and resistive power measurements
When the current measurement is dB or resistive power, you can display the resistance
reference with the ZOOM key (long press). This value can then be adjusted using the
SEL/ON and RANGE keys (this value is common to dBm and resistive power
measurements).
You quit the ohm reference adjustment mode with the ZOOM key (short press).
