Radio Controlled Clock RCC, Operation | National Geographic 274NE

274 NE

4Radio Controlled Clock (RCC)

The RCC has the most accurate time within the continent. This unit 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 2,000 km from the transmitter. However, some environmental effects may affect the transmitting distance. For more information please see www.ptb.de With all wireless devices, the receiving ability may be affected by, but not limited to, the following, therefore for best accuracy avoid the following situations:

•Long transmitting distance

•Nearby mountains and valleys

•Among tall buildings

•Near railway, high voltage cable, etc.

•Near freeway, airport, etc.

•Near construction site

IS						FI
			SE
		NO
						EE
						LV
		DK			LT
					LT
IE	UK					BY
IE	UK
	NL	DE		PL
	BE	DE
	BE		CZ
	LU	OK	CZ			UA
		OK		SK		UA
	FR	CH	AT	HU		MD
	FR	CH	SI HR	HU		RO
			SI HR			RO
			BA		YU
			IT			BG
						BG	GE
					MK
					AL
PT	ES				EL
						TR
			MT
						CY	SY
						CY	LB
		TN
							IL JO

•Inside concrete buildings

•Near electrical appliances

•Bad weather

•Inside moving vehicles

•Nearby metallic structures

4.1Wave Signal Reception

As long as the batteries are supplying power to the clock, the clock will receive the time signal and adjust the time automatically. No manual adjustment is required after power up. Accurate adjustment of the clock based on the time signal is supported in the continental Europe.

The monitor automatically receives the time signal everyday at 1:00am and makes any required


adjustment to the time setting, indicated by the flashing icon		.
If the time signal is successfully received the OK	icon will appear and the RCC icon OK		will stop

flashing.

Important: Do not press any button while the wave signal reception is in progress.

4.2Triggering a Wave Signal Reception Manually

You can trigger a wave signal reception at any time by pressing the WAVE - button .

4.3Unsuccessful Wave Signal Reception

If the automatic updates are unsuccessful, the wave on top of the antenna tower and will disappear. The unit will try to receive the signal for 10 minutes every hour until successful reception.