5. Description of the Instrument
Projekt Elektronik
MESS - UND REGELUNGSTECHNIK GMBH
page 11
5.5
Rear Panel Overview
Fig. 3: rear panel of the instrument
probe connector
mains socket
zero point trimmer ‘Zero’
power switch
analog output
connector protective earth
RS232 connector
connector analog ground
5.6
Power
The FM 3002 is operated on 230 V or 115 V AC power.
The operating voltage is selected by plugging the corresponding fuse adaptor into the power outlet.
The selected voltage will be displayed in the fuse adaptor as being 230 V or 115 V. Instrument
operation is possible with both 50 Hz and 60 Hz.
The fuse holder on the power switch houses two medium-blow 0.315 A / 250 V fuses (M 0.315/250).
For 115 V operation, the fuses should be replaced by medium-blow 0.63 A units.
If operating the mains switch does not result in the digital display lighting up, these fuses should be
checked.
5.7
Probes and Probe Connector
Two probes of any kind (axial and/or transverse) can be provided for each Teslameter unit.
Each probe is marked at its plug end with the serial number of the associated instrument (nameplate
on the rear panel of the FM 3002); in situations where several FM 3002 are used, this ensures the use
of each together with the correct probe only.
The 25-position probe plug is plugged into the 25-position receptacle "Probe" and the two retaining
screws in the plug are tightened.
NEVER connect or disconnect a probe when the unit is switched ON!