Operating Manual for COMMUNICATIONS SERVICE MONITOR

Bail arm option
Power requirements
Fuses
OPERATING MANUAL 2945A
If the bail arm carrying handle is fitted, the Service Monitor will not fit into the optional Ever
Ready Case, 46662/571. Do not attempt to attach the shoulder strap supplied with this Ever Ready
Case to a Service Monitor fitted with a bail arm carrying handle.
The Service Monitor can be powered from a wide range of power sources, both AC and DC.
AC supplies must be within the range 90 V to 265 V, at a frequency of between 45 Hz and 67 Hz;
or within the range 90 V to 132 V, at a frequency of between 45 Hz and 440 Hz
The maximum power consumption is 190 VA
Voltage selection is not necessary as the AC power supply module within the Service Monitor is
designed to handle this wide spread of input variations.
For DC operation, the Service Monitor requires a supply within the range 11 V to 32 V. A range
switch adjusts the input circuits of the DC supply module for either 11 V to 20 V or 18 V to 32 V.
The maximum DC power requirement is 100 W.
The AC input circuit is fed through a single fuse fitted to the rear panel of the Service Monitor,
within the AC input connector. This should be a 2 A anti-surge, 5 × 20 mm glass cartridge fuse.
The DC input circuit is also fed through a single fuse. This is fitted within the fuseholder adjacent
to the DC input connector. This should be a 10 A anti-surge, 5 × 20 mm glass cartridge fuse.
Class I power cords (3-core)
General
Wire ended
When the equipment has to be plugged into a Class II (ungrounded) 2-terminal socket outlet, the
cable should either be fitted with a 3-pin Class I plug and used in conjunction with an adapter
incorporating a ground wire, or be fitted with a Class II plug with an integral ground wire. The
ground wire must be securely fastened to ground. Grounding one terminal on a 2-terminal socket
will not provide adequate protection.
In the event that a moulded plug has to be removed from a lead, it must be disposed of
immediately. A plug with bare flexible cords is hazardous if engaged in a live socket outlet.
Power cords with the following terminations are available from IFR Ltd. Please check with your
local sales office for availability.
This equipment is provided with a 3-wire (grounded) cordset which includes a moulded IEC 320
connector for connection to the equipment. The cable must be fitted with an approved plug which,
when plugged into an appropriate 3-terminal socket outlet, grounds the case of the equipment.
Failure to ground the equipment may expose the operator to hazardous voltage levels. Depending
upon the destination country, the colour coding of the wires will differ:-
Country IEC 320 plug type IFR part number
Universal Straight through 23424-158
Universal Right angled 23424-159
North America Harmonised
Line (Live) Black Brown
Neutral White Blue
Ground (Earth) Green Green/Yellow
GREEN/YELLOW
EARTH
BLUE
NEUTRAL
HARMONISED-WIRE ENDED
46882-311D 2-3
BROWN
LIVE
C3509