National Geographic 264NE manual

Page 4

2.0 Troubleshooting

Press the RESET button at any time your display shows dashes (--.-°F) and/or ensure that the remote sensor is in direct line to the monitor.

If the outdoor temperature cannot be received, check:

1.The distance between the monitor or remote sensor should be at least 0.9 to 1.2 meters away from any interfering sources such as computer monitors or TV sets.

2.Avoid placing the monitor onto or in the immediate proximity of metal window frames.

3.Using other electrical products such as headphones or speakers operating on

the same signal frequency (433MHz) may prevent correct signal transmission and reception.

4.Neighbours using electrical devices operating on the 433MHz signal frequency can also cause interference.

5.Signals from other household devices, such as door bells and home security systems, may temporarily interfere with the units and cause reception failure. The transmission and reception of temperature reading will resume once the interference has stopped.

The maximum transmission range is 45 meters from the remote sensor to the monitor (in open space). However, this depends on the surrounding environment and interference levels. The temperature signal travels in a straight line from the remote sensor to the monitor. The signal will not curve around an object. If no reception is possible, despite the observation of these factors, all units will have to be reset.

Note: to reset unit please see Set up Procedure (see Section 1.0).

3.0 Radio 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

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