Operating Instructions; Installation; Adjusting To The Local Mains Voltage; Connections - Philips PM 5508 Operating Manual

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19
OPERATING INSTRUCTIONS
V. INSTALLATION
A. Adjusting to the local mains voltage
The instrument can be used with mains voltages of 115 V a.c. ± 20
and 230 V a.c.+ ?_0 %.
If the instrument has to be adjusted to another mains voltage, resolder
the connections to the primary windings of the supply transformer as shown
in the sticker on the transformer.
To gain access to the supply transformer and fuse:
— Remove the bottom plate (two screws), the transformer-connections are
then accessible.
— Remove the two screws holding the printed wiring unit which should
then be hinged out.
— The fuse (200 mA, delayed) is then accessible.
B. Earthing
Earth the instrument in accordance with the local safety regulations. This
can be done via the mains flex, as it is equipped with a plug with rim-earthing
contacts, or via the earth-screw at the rear of the instrument. Not only the
metal cabinet is then earthed but also the "common" of the circuit.
Avoid double earthing.
C. Connections
RF:
— Connect the generator to the mains by means of the mains flex
supplied.
— Connect socket "RF" to the receiver to be checked by means of a RF
cable and, if necessary, via the 75 S2 ~ 300 52 matching transformer.
— The measuring set-up then is ready (see the section "OPERATION"
on page 21).
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