User Manual
GOSSEN METRAWATT GMBH 25
10 METRATESTER
5-F Radio Interface
10.1 Applications
The radio interface at the METRATESTER
5-F test instrument allows for the wireless trans-
mission of measurement results to a PC.
The test instrument’s transmitter sends measurement data to a receiver which has been
linked to a PC via the RS232 interface.
This provides for various advantages:
• If the test instrument is used to perform measurements in an aggressive environment,
the PC and a printer can be operated at a more appropriate location.
• On-site storage of measurement results to memory
• Documentation of test results at the customer’s facility
10.2 Initial Start-Up
➭ Connect the receiver to the RS232 interface at the PC (PC must be switched off).
➭ Switch the PC on.
➭ Start the PC.doc-WORD or the PC.doc-ACCESS program.
➭ Place the METRATESTER
5-F test instrument into service.
10.3 Using the Radio Interface
Single Measurements
➭ Activate the transmission key at the test instrument after the completion of each mea-
surement in order to transmit measurement results to the PC.
The test instrument acknowledges transmission of the data with an acoustic signal, i.e. after
the third transmission of a complete data frame.
Continuous Measurement
➭ Press and hold the transmission key for at least 2.5 seconds.
The test instrument acknowledges activation of the continuous measurement mode while the
key is depressed with an acoustic signal which is repeated three times, after which all mea-
surements are continuously transmitted to the PC. The continuous measurement function
can only be deactivated by disconnecting the test instrument from mains power.
Evaluation of Measurement Results at the PC
See PC.doc-WORD/PC.doc-ACCESS operating instructions.
10.4 Radio Interface Characteristic Values
Frequency 433.92 MHz
Mod. Type OOK (on-off keying)
Power
Consumption < 10 mW
Range max. 30 m
(within a single room),
Exception:
Panel-mount version
METRATESTER
5-F-E:
max. 6 m,
see drawing at right
To p V i e w
METRATESTER
5-F-E
installed to a shielded
housing
6m
Secure Reception Range
110°