Placement and connection

Placement

Align the radio signal receiver with the front cover (using screws) or the rear surface pointing towards the DCF Mainflingen transmitter (approximately to the west). If the DCF reception is of good quality, the time base on the connected clocks will synchronize automatically within a few minutes. In the case of poor reception (especially during the day), the initial setup must be performed manually so that the LED blinks regularly.

Like any radio receiver, the DCF radio signal receiver is subject to disruptive and attenuating influences. Their impact increases with the distance from the DCF transmitter in Mainflingen and the presence of the following factors:

• metal cladding of buildings and rooms, metal structural elements (beams, reinforcement, roofs)

• strong walls and insulation, basement and cellar spaces

• inappropriate local geographical conditions (difficult to predict in advance)

• atmospheric disturbances, storms

• unshielded electrical appliances

• televisions and computers located near the DCF radio receiver

Connection

The AD 650 receiver is suitable for both indoor and outdoor use. It connects to selected devices using an unshielded two-wire cable with double insulation (a 10 m cable is included in the delivery). The maximum length of the cable depends on its cross-section (at least 0.25 mm²) and can be up to 200 m. We recommend using shielded cable only in critical conditions.

The functionality of the receiver is independent of the connection polarity. Cut the cable to the required length. With good reception, the LED on the receiver flashes once per second with a skip of 1 pulse at the 59th second.

The receiver connects to LINE IN connector. It is also important to configure DIP switch position to DCF.