Control Functions; Selecting Measuring Functions And Measuring Ranges; Automatic Range Selection; Manual Measuring Range Selection - Gossen MetraWatt METRAHIT PM TECH Operating Instructions Manual

6

Control Functions

6.1 Selecting Measuring Functions and Measuring Ranges

The rotary 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 "A" functions.
The socket blocking mechanism prevents the user from inadver-
tently turning the selector switch to impermissible functions after
the measurement cables have been plugged in to the instrument.

6.1.1 Automatic Range Selection

The multimeter is equipped with auto-ranging for all measuring
functions, except for temperature measurement, diode and
continuity testing, and the MHz measuring function. 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. When the
instrument is switched to frequency measurement, the previously
selected voltage measuring range remains active.
The Auto-Ranging Function
The multimeter is switched automatically to the next higher range
at (60000 d + 1 d 06000 d), and to the next lower range at
(05000 d - 1 d  50000 d).
Exception, capacitance measurement:
The multimeter is switched automatically to the next higher range
at (6000 d + 1 d 0 600 d), and to the next lower range at
(0500 d - 1 d  5000 d).
Gossen Metrawatt GmbH

6.1.2 Manual Measuring Range Selection

Auto-ranging can be deactivated and measuring ranges can be
selected manually in accordance with the following table by
pressing the MAN / AUTO button.
The desired measuring range can then be selected with the
scroll key.

The instrument is automatically returned to range selection when
the MAN / AUTO key is pressed, the rotary switch is activated or the
instrument is switched off and back on again.
Overview: Auto-Ranging and Manual Range Selection
Manual mode active:
MAN / AUTO
utilized measuring range is fixed
Range switching sequence for:
V: 600 mV* 6 V 60 V 600 V 1000 V
Hz(V AC): 600 Hz 6 kHz 60 kHz 300 kHz
MHz 600 Hz 6 kHz 60 kHz 600 kHz  1 MHz
: 600 6 k 60 k600 k 6 M 60 M
A: METRAHIT PM XTRA / PM TUNE / E
600A 6 mA 60 mA
 600 mA 6 A 10 A (16 A)
METRAHIT PM TECH / E
 or 
60 mA 600 mA 6 A 10 A (16 A)
METRAHIT EU PRO / E
Hz (A AC): 600 Hz 6 kHz 60 kHz
A  6 V see chapter 7.7.3 ff.
A:
A  600 mA 6 A see chapter 7.7.3 ff.
F: METRAHIT PM XTRA / PM TUNE / E
and METRAHIT PM TECH / E
60 nF 600 nF 6 F 60F 600F
MAN / AUTO Return to automatic measuring range selection
* Via manual measuring range selection only
Control Functions
Function
:
XTRA
:
TECH
: 6 A  10 A (16 A)
SPECIAL
XTRA
:
TECH
or

Display
MAN
MAN
—
16