DCF 77 RADIO CONTROLLED CLOCK
The remote sensor receives the time signal transmitted by Physikalisch-Technische
Bundesanstalt (PTB) of Germany, which is regulated by 4 atomic clocks and in
average deviates less than 1 second in 2 million years. PTB transmits the time signal
(DCF77, 77.5kHz) continuously from Mainflingen, 25 km southeast of Frankfurt (am
Main). It is expected that the signal can cover a distance of 1,500 km from the
transmitter. Then the remote sensor transmits the time signal to the weather station to
display the accurate time. However, there are many environment factors may affect
the RCC reception, i.e. nearby computer monitors or other electronic devices, put on
any metal surface, surrounded by any tall buildings and so on. The user had better to
place the remote sensor away from metallic structures and face the transmitter in
Mainflingen-near Frankfurt, Germany.
SET THE CLOCK
Note 2
1. Press and hold the [MENU/SETUP] button for more than 2 seconds to enter clock
setting mode, the hour value begins flashing at the frequency of 1Hz.
2. Press the [ ] or [ ] button once to increase or decrease the hour value by one
hour. Hold down either button will initiate fast increment/decrement (with 10
increments/decrements per second).
3. Press the [MENU/SETUP] button to confirm the hour value. The minute value begins
flashing at the frequency of 1Hz.
4. Press [ ] or [ ] button to set your desired minute value. Holding down either
button will initiate fast increment/decrement (with 10 increments/decrements per
second). Press the [MENU/SETUP] button to confirm the minute value.
Note 3
Note:
2.
If there is no key pressed in the setting mode for 10 seconds, it will automatically save the set value
and exit to normal display.
3.
Every change of minute digit will automatically reset the seconds to zero.
TO SET DAILY ALARM
Note 4
1. In the clock time display mode, press the [ ] button once to switch to display
alarm time for 10 seconds.
2. Press the [ ] button again in alarm display mode to enable or disable the daily
alarm.
3. In the alarm time display mode, press and hold the [ ] button for 2 seconds to
enter the alarm setting mode.
4. The hour digits will be flashing, use the [ ] button to increase by one hour or the
