User's Guide

Page 22
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Fitting the Correct AC Input Fuse
The mains input fuse F2 is an integral part of the rear panel ac connector (see Fig 11). The fuse type
must be correct for the local mains supply. Check the fuse fitted conforms to that detailed in Fig 15.
Fig 15
Fig 15 ac Input Fuse
Chassis Stud Connection
A chassis stud is fitted to the transceiver's rear panel. This stud is used to connect the
equipment to the equipment rack, or to the user's system earth point. The stud must not be
used as the safety earth.
In order not to compromise the transceiver’s Electromagnetic Compatibility (EMC) the chassis stud,
marked and fitted to the rear panel (see Fig 11) must be connected to the equipment rack (if a rack
is being used) or to the user's system earth point. The connection should be made using a single tri-rated,
green-and-yellow cable having a cross-sectional area of 2.5 mm
2
. The cable should have CSA and
UL1015 approval, and be connected to the chassis stud through an M6 eyelet (for example, Park Air part
number 20-08010103).
Failure to comply with this instruction could result in non-compliance with the European
Commission EMC Directive 89/336/EEC.
AC Supply Connection
The equipment is permanently connected to the mains supply when the mains connector is
attached. Switching the rear panel Power switch to off does not isolate all internal circuits
from the mains supply. For this reason, a mains isolating switch should be fitted close to,
and easily accessible from, the transceiver's position. The isolation switch should isolate
both live and neutral supplies, be clearly labelled, and adequately rated to protect the
equipment.
For a mains input in the range 110 to 120 Vac,
fuse F2 should be rated T4A, 125V, UL.
For a mains input in the range 110 to 240 Vac,
fuse F2 should be rated T4A, 250V, IEC.
FS2
Spare Fuse
Line
Neutral
Earth
WARNING Chassis Earth
WARNING Dangerous Voltages