Instructions
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 Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.1.3 Alternating Voltage and Frequency Measurement V AC and Hz with Selectable Low-Pass Filter (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.1.4 Frequency and Duty Cycle Measurements (METRA HIT Extra 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 Extra and METRA HIT Etech only)
- 5.7 Current Measurement
- 5.7.1 Direct and Pulsating Current Measurement, Direct Connection, A DC and A (DC+AC) (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.7.3 Direct and Pulsating Current Measurement with Current Clamp Sensors, A DC and A (DC+AC)
- 5.7.4 Alternating Current Measurement with Current Clamp Sensors, A AC and Hz
- 5.7.5 Direct, Pulsating and Current Measurement with Current Clamps Transformer A DC, A (DC+AC), A AC and Hz (METRA HIT Extra, METRA HIT Etech and METRA HIT Especial only)
- 5.1 Voltage Measurement
- 6 Device and Measuring Parameters
- 7 Interface Operation
- 8 Technical Data
- 9 Maintenance and Calibration
- 10 Accessories
- 11 Index
GMC-I Messtechnik GmbH 59
Technical Data
Data Interface
Type Optical via infrared light through the
housing
Data transmission
(data transfer) Serial, bidirectional (not IrDa compatible)
Protocol Device specific
Baud Rate 38,400 baud
Functions – Select/query measuring functions and
parameters
–
Query/transmit momentary measurement
data
– Read out stored measurement data
The USB X-TRA plug-in interface adapter (see accessories) is
used for adaptation to the PC’s USB port.
Internal Measured Value Storage (METRAHIT EXTRA only)
Memory capacity 16 Mbit (2 MByte) for approx. 60,000
measured values with time stamp
Power Supply
Battery 2 ea. 1.5 V mignon cell (2 ea. size AA),
alkaline manganese per IEC LR6
(2 ea. 1.2 V NiMH rechargeable battery
also possible)
Service life With alkaline manganese: approx. 200
hours
Battery test Battery capacity display with battery
symbol in 4 segments: .
Querying of momentary battery voltage via
menu function.
Power OFF function The multimeter is switched off
automatically:
– If battery voltage drops to below approx.
1.8 V
– If none of the keys or the rotary switch
are activated for an adjustable duration
(10 to 59 min.), and the multimeter is not
in the continuous operating mode
Power pack
connector socket
(METRAHIT E
XTRA
only) If the NA X-TRA power pack (see
accessories) has been plugged into the
instrument, the batteries are disconnected
automatically.
Rechargeable batteries can only be
recharged externally.