Roberts Radio CR950 - Manual (Page 4)

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4
Fuse
This apparatus must be protected by a 3A fuse (BS1362) in a 13A plug
(BS1363). If another type of plug is used a 5A fuse should be fitted in the
plug, adaptor or distribution board.
IF IN DOUBT - CONSULT A QUALIFIED ELECTRICIAN.
Backup Battery
Slide the battery cover (22) in the direction of the arrow. Fit a 9 volt IEC size
6LR61 (6F22, PP3) or equivalent battery into the compartment. Replace
the battery cover. The time and alarm settings will be retained during a
temporary failure of the AC mains supply. The LED display will not be
operational but the Radio and Buzzer alarms will continue to function.
Automatic Time Setting
Connect the CR950 to the mains supply, the built in microprocessor will
automatically activate the receiver of the Radio Controlled clock and
initiate a search for the time signal.
When the CR950 is receiving the radio time signal, the seconds digits will
appear in the display and the colon will flash once every second in time with
the radio time signal. When the time setting process has been completed,
the exact time and day of the week will appear in the display.
The CR950 receives the sycronisation signal from one of the most
accurate clocks in the world. The signal is transmitted from the official UK
standard frequency and time signal transmitter MSF located at Rugby in
the U.K. Note : During ?? the MSF transmitter closes down for maintainence
during this time it will be necesarry to set the clock manualy (see the section
headed Setting the Time and Date Manually). The CR950 will automaticaly
synchronise with the MSF time signal when the transmitter is switched on.
Automatic Synchronization
Once the time has been set by the radio time signal, the CR950 will
continue running on its internal precision 4.19 MHz quartz time base, with
synchronisation to the radio time signal taking place once every hour
starting at the 54th minute.
The precision of the CR950 is not significantly affected even if synchroni-
sation is successful only a few times per day.
General
Do not allow this unit to be exposed to water or steam. Do not leave the unit
where excessive heat could cause damage. It is recommended that the
FM band be used wherever possible as better results in terms of quality and
freedom from interference will usually be obtained than on the MW or LW
bands.
Mains supply
The CR950 will operate from a supply of AC 230-240 volts, 50Hz only.
For your convenience this product is supplied with a plug which is fitted
with a fuse of the appropriate rating. If the plug supplied is not suitable for
your socket outlet, it should be removed by unscrewing the plug top, the
terminal screws, and removing the cable.
The correct style of plug to suit your household together with a correctly
rated fuse should be fitted.
IF IN DOUBT - CONSULT A QUALIFIED ELECTRICIAN
IMPORTANT. DO NOT make any connection to the larger terminal which
is marked with the letter E or by the safety earth symbol or coloured
Green or Green-and-yellow.
The wires in the mains lead are coloured in accordance with the following
codes :-
BLUE - NEUTRAL BROWN - LIVE
As these colours may not correspond with the coloured markings identify-
ing the terminals in your plug, proceed as follows:
The wire coloured BLUE must be connected to the terminal marked N or
coloured BLACK.
The wire coloured BROWN must be connected to the terminal marked L or
coloured RED.
CR950 Instruction Book.pm6 24/10/99, 13:38 4