Roberts CR950 User Manual

CR950

3 Band Radio Controlled

Digital Clock Radio

Please read this manual before use

2

15. Radio On/Off button

16. Alarm 2 button

17. Alarm 1 button

18. Forward button

19. Time button

20. Reverse button

8. Alarm 2 function switch

9. Auto summer indicator

10. Tuning scale

11. Alarm 1 indicator

12. Alarm 2 indicator

13. Week end cancel button

14. Sleep button

789101112131415

3

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 synchroni­sation is successful only a few times per day.

5

forward (18) or reverse button (20) until the correct year appears.

After setting the time, the CR950 will continue to run on its own internal
quartz time base and will automatically synchronise itself with the radio
time signal commencing on the 54th minute of every hour. Once synchro­nisation is achieved the time and date of the radio time signal will be
restored and displayed.

Note: Pressing the forward or reverse buttons once will cause the display
to increment by one. Press and hold down the forward or reverse buttons
to rapidly increment the display.

Automatic Summer/Winter Time Switching

The CR950 display will automatically switch from summer to winter time
and vice versa by following the radio time signal. The automatic summer
time indicator (9) will light up during summer time.

Radio Operation

Press the On/Off button (15) to turn on the radio. The LED dial pointer
located in the tuning scale (10) will light. Select the required waveband
using the waveband selector (5). Adjust the volume control (7) until a
hissing sound is heard. Rotate the tuning control (6) until the desired station
is received. Adjust the volume control (7) to the required sound level.

To switch off the radio, press the On/Off button (15).

Aerials

The wire aerial located on the rear of the CR950 is for FM reception. The
wire should be fully extended and positioned for optimum reception

There is a built in ferrite aerial for MW and LW stations. Rotate the CR950
to the position giving best reception.

6

Snooze Control

The radio or buzzer alarm can be silenced for 5 minutes by pressing the
Snooze button (1). This sequence can be repeated within the 60 minute
alarm period.

Sleep Timer

The radio can be set to turn off after a preset time has elapsed.

Repeatedly press the sleep button (14) until the desired time is reached
(maximum 90 minutes in 10 minute steps). The radio will switch off after the
sleep time has elapsed.

The radio can be turned off at any time by pressing the On/Off button.

Dimmer Switch

The brightness of the clock display can be adjusted using the dimmer
control (21) located on the underside of the CR950.

Battery Backup

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 operate at their preset times.

7

Circuit Features

Loudspeaker 75mm diameter 8 ohms

Output Power 400mW RMS

Aerial System FM Wire Aerial

MW Built-in Ferrite aerial

LW Built-in Ferrite aerial

Imported by:-

PO BOX 130

MEXBOROUGH

SOUTH YORKSHIRE

S64 8YT

TW7 6EG

Issue 1

Guarantee