GMC-I Messtechnik GmbH
5
2
Initial Start-Up
Battery
Your instrument is supplied with two 1,5 V AA size batteries in
accordance with IEC LR 6, and is ready for operation.
Be sure
to refer to chapter 13.1 “Battery”, before initial start-up, or after
your device has been in storage for a lengthy period of time.
Switching the Instrument On
➭
Press the
ON / OFF
key.
Power-up is acknowledged with an acoustic signal. All of
the segments at the liquid crystal display (LCD) are
illuminated shortly. The LCD is shown in the diagram on
page 2.
Note!
Electrical discharge and high frequency interference
may cause incorrect displays to appear, and may
disable the measuring sequence. In such cases,
switch the instrument off and back on again in order
to reset. If the problem persists, briefly dislodge the
battery from the connector contacts.
Disconnect the instrument from the measuring circuit before
opening
and refer to chapter 13 “Maintenance”!
Automatic Shutdown
The instrument switches itself off automatically if neither one
of the keys nor the rotary selector switch are activated for a
period of approximately 10 minutes.
Disabling Automatic Shutdown
The instrument can be set to continuous duty. Press the
FUNC
key and the
ON / OFF
key simultaneously when
switching the instrument on to this end. Continuous duty is
indicated at the LCD by means of the symbol.
Switching the Instrument Off
Press the
ON / OFF
key.
3
Selecting Measuring Functions and Measuring Ranges
The function selector switch is linked to the automatic socket
blocking mechanism, which only allows access to two
connector jacks for each function. Be certain to remove the
appropriate plug from its respective jack before switching to
and from the “mA” or the “A” function. The socket blocking
mechanism prevents the user from inadvertently turning the
selector switch to impermissible functions after the
measurement cables have been plugged in to the instrument.
3.1
Automatic Measuring Range Selection
The multimeter is equipped with automatic measuring range
selection for all ranges except the 600 mV
range. Auto-
ranging is active as soon as the instrument is switched on.
The instrument automatically selects the measuring range
which allows for highest possible resolution of the applied
quantity.
The instrument is automatically switched to:
3.2
Manual Measuring Range Selection
Auto-ranging can be deactivated and measuring ranges can
be selected manually in accordance with the following table.
Manual operation is deactivated by pressing and holding the
MAN / AUTO
key (approx. 1 s), by activating the
rotary selector switch
, or by switching the instrument off and
then back on again.
If the instrument is switched back to auto-ranging in the
600 mV
range, the respective range or 6 V
is selected
automatically.
3.3
Quick Measurements
Measurements performed using a suitable fixed measuring
range are executed more quickly than those which utilize
automatic range selection. Quick measurement is made
possible with the following two functions:
•
Manual measuring range selection
, i.e. selection of the
measuring range with best resolution (see chapter 3.2)
or
•
With the
HOLD function
(see chapter 5). In this way, the
correct measuring range is selected automatically after
the first measurement and all further measurements are
executed more quickly.
The selected measuring range remains active for the
subsequent series of measurements with these two
functions.
– The next highest range
at typically
±
(6039 1 digit)
– The next lowest range
at typically
±
(560 digits – 1 digit)
AUTO/
MAN
(4)
Function
Acknowledge-
ment
Dis-
play
Acou-
stic
Signal
brief
Manual mode active:
utilized measuring range is fixed
MAN
(10)
1 x
brief
Range switching sequence for:
V
:
600 mV
→
6 V
→
60 V
→
600 V
→
600 mV
→
...
V
:
6 V
→
60 V
→
600 V
→
600 mV
→
6 V
→
...
mA
: 60 mA
→
600 mA
→
...
mA
: 60 mA
→
600 mA
→
...
A
:
6 A
→
10A
→
6 A ...
A
:
6 A
→
10A
→ 6Α ...
Ω
:
60 M
Ω →
600
Ω →
6 k
Ω →
60 k
Ω →
600k
Ω →
6 M
Ω →
60 M
Ω
...
MAN
(10)
1 x
long
Return to automatic range selection
—
2 x
