"51
*UI
3 O p e ra t i on
(see drawing 701.5002.01)
a) Replacing RF modules:
Release catch by pressing two studs (2) and pull out RF module
Plug in required RF module until it locks in position.
b) Active/passive switchover:
Select the desired mode by means of pushbutton (3).
c) Meter indication of state of battery:
Press pushbutton (8) for the battery test on the meter; red
marking: battery discharged.
d) Meter illumination:
The illumination is switched on by pressing pushbutton (4).
e) Replacing battery:
Open the cover (7) of the battery compartment and replace bat
teries in holder.
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