58-577 CANFORD RADIO-CONTROLLED DESK CLOCK MSF
Instructions
Insert battery/batteries ensuring correct polarity
The clock will carry out a ‘fast forward’ test before stopping at a pre-determined time, (usually 12 o’ clock).
Once the clock has ‘locked on’ to the time signal it will advance to the correct time, note this may take some time so best left overnight
before investigating any potential problems.
The clock synchronises daily to the time signal ensuing accurate time display as well as accommodating summer/winter time changes.
Battery should be changed annually, (every 4 years for extended runtime clock), using good quality AA alkaline cells.
Troubleshooting
The MSF time and date signal has a signal strength in excess of 100uV/m. The signal level should be sufficient to allow time code
reception throughout the UK but localised environmental conditions may inhibit such. Typical scenarios that inhibit reception include:
Locations within building structures with a steel frame, steel re-enforced concrete and metal cladding constructions.
Locations nearby pylons, scaffolding and overhead power cables
Locations nearby localised interference such as electric motors, fluorescent tubes, CRT computer and TV screens.
When experiencing reception difficulties first check that the MSF time signal is currently active. Maintenance outages reported here:
http://www.npl.co.uk/science-technology/time-frequency/products-and-services/time/msf-outages
Suggestions to improve reception
If the clock is not operating correctly ensure the unit has a fresh battery installed.
If the clock is located deep within a building and isn’t ‘locking on’ to the MSF time signal, try leaving the clock overnight on a window
ledge on the peripheral of the building to aid reception and move back to its display position when synchronisation takes place.
You may need to try different mounting locations within the room/building to ensure good signal reception if problems persist.
Try rotating the clock 90 degrees if reception is unreliable. The radio-controlled clocks have an internal antenna that picks up the signal
most effectively when it is facing directly towards or away from the Anthorn radio station.
The following link may provide further assistance/information:
http://www.npl.co.uk/science-technology/time-frequency/time/faqs/
