User Manual
Table Of Contents
- 1 Safety Features and Precautions
- 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols
- 3 Initial Start-Up
- 4 Control Functions
- 5 Measurements
- 5.1 Voltage Measurement
- 5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC)
- 5.1.2 Alternating Voltage Measurement with 1 MW Load Resistance and Frequency Measurement with Selectable Low-Pass Filter (METRA HIT AM X-TRA / AM TECH / AM PRO / Outdoor / SECULIFE HITam/md only)
- 5.1.3 Alternating Voltage and Frequency Measurement V AC and Hz with Selectable Low-Pass Filter (METRA HIT AM X-TRA / AM TECH / AM PRO / Outdoor / SECULIFE HITam/md only)
- 5.1.4 Frequency and Duty Cycle Measurements (METRA HIT AM XTRA / Outdoor / SECULIFE HITam/md only)
- 5.2 Resistance Measurement, W
- 5.3 Continuity Test
- 5.4 Diode Testing with a Constant Current of 1 mA
- 5.5 Temperature Measurement
- 5.6 Capacitance Measurement (METRA HIT AM XTRA / Outdoor / SECULIFE HITam/md and METRA HIT AM TECH only)
- 5.7 Current Measurement
- 5.7.1 Direct and Pulsating Current Measurement, Direct Connection, A DC and A (DC+AC) (METRA HIT AM X-TRA / AM TECH / AM PRO / Outdoor / SECULIFE HITam/md only)
- 5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz (METRA HIT AM X-TRA / AM TECH / AM PRO / Outdoor / SECULIFE HITam/md only)
- 5.7.3 Direct and Pulsating Current Measurement with Current Sensor Clamp, A DC and A (DC+AC)
- 5.7.4 Alternating Current Measurement with Current Sensor Clamp A AC and Hz
- 5.7.5 Direct, Pulsating and Current Measurement with Current Transformer Clamp A DC, A (DC+AC), A AC and Hz (not METRA HIT AM BASE)
- 5.1 Voltage Measurement
- 6 Device and Measuring Parameters
- 7 Interface Operation (METRA HIT AM XTRA / Outdoor / SECULIFE HITam/md only)
- 8 Technical Data
- 9 Maintenance and Calibration
- 10 Accessories
- 11 Index
18 GMC-I Messtechnik GmbH
Control Functions
4 Control Functions
4.1 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 inadvert-
ently turning the selector switch to impermissible functions after
the measurement cables have been plugged in to the instrument.
4.1.1 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 (11999 d + 1 d 01200 d), and to the next lower range at
(01100 d - 1 d 10990 d).
Exception, capacitance measurement:
The multimeter is switched automatically to the next higher range
at (1199 d + 1 d 0120 d), and to the next lower range at
(0110 d - 1 d 1099 d).
4.1.2 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
or
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
* Via manual measuring range selection only
Function Display
MAN / AUTO
Manual mode active:
utilized measuring range is fixed
MAN
or
Range switching sequence for:
V: 100 mV*
1 V
10 V
100 V
1000 V
Hz: 100 Hz
1 kHz
10 kHz
100 kHz
: 100
1 k
10 k
100 k
1 M
10 M
40 M
A: METRAHIT AM XTRA / O
UTDOOR and SECULIFEHITAM/
MD:
100
A
1 mA
10 mA
100 mA
1
A
10 A (16 A)
METRAHIT AM TECH:
10 mA
100 mA
1A
10 A (16 A)
METRAHIT AM PRO: 1A
10 A (16 A)
A : see chapter 5.7.3 ff
F: METRAHIT AM XTRA / O
UTDOOR, SECULIFEHITAM/MD
and METRAHIT AM TECH:
10 nF
100 nF
1
F
10
F
100
F
1000
F
MAN
MAN / AUTO
Return to automatic measuring range selection —