Reset the unit by removing the battery and proceed from step 2 (above). Should after 10 minutes and the time is still not received the clock will automatically attempt to receive the WWVB time signal two hours later.
Manually set the time (see “Manual Time Setting” below).
Note: During the time of
If there is no WWVB signal then the radio tower will not appear on the LCD
When WWVB time reception is successful, the received time will automatically override the manually set time and date. (Please see notes on “Radio Controlled Time Reception” and “Manual Time Setting”).
Radio controlled Time Reception:
WWVB icon (flashing)
Location test sequence for better reception
During reception, the WWVB tower icon in the LCD will start flashing. This indicates that the WWVB time signal is present and the clock is trying to receive it. At the same time, three digits “000” will appear below the USA map in the LCD to indicate that the time data from the signal source is being
When the time signal is received, the WWVB tower becomes permanently lit and the time will be displayed.
General Information on WWVB radio controlled time
NIST Radio Station WWVB is located on the WWVB site near Ft. Collins, Colorado. The WWVB time code is transmitted by the 60 kHz carrier and is broadcast continuously at a rate of 1 pulse per second using pulse width modulation.
The broadcast information includes the year; time intervals; Daylight Saving Time and leap year. The accuracy of the transmitted WWVB signal is better than 1 part in 100 billion (1 x 100- 11) and with day to day deviations being less than 5 parts in 1000 billion
(5 x
2
