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|Desktop Radio Atomic Clock and Remote Antenna Unit|
a Windows NT Server to the ARC Clock
The ARC Clock is equipped with a serial interface with a standard 9 pin connector. Select an unused serial port of your PC, usually marked COM1 ... COM4, plug in the ARC Clock connector. To plug the ARC Clock connector into a 25 pin serial port connector you will need a 9 to 25 pin adapter. Your dealer can usually supply one.
The clock will attempt to pick up the time signal for approximately 6 minutes after power on. The antenna symbol on the clock will flash when a reception attempt is being made. If the clock cannot receive the time within the 6 minute time period it will enter an idle mode. When the clock is idle the antenna symbol disappears from the display and the seconds count up. Further reception attempts will be made every hour until the unit picks up the time.
Solution: If the clock does not pick up the time, reposition the antenna until a good signal strength is achieved. The clock may be forced to attempt to receive the time signal by powering the unit off and back on or by pressing the reset button at the back of the unit where fitted. Possible causes of Interference to the Time Signal.
In order to synchronise to the time signal the clock requires a good signal strength. When the clock is first powered on or reset an antenna symbol will appear on the clock display. To the right of the antenna symbol is a number of bars. The number of bars represents the current signal strength. The indicator must show at least 3 or 4 bars consistently in order to pick up a valid time.
Solution: When the clock is receiving a time signal, the antenna symbol on the display will flash. It takes approximately 3-4 minutes to initialise the unit with a valid time. Possible causes of Interference to the Time Signal.
If the signal
is too weak follow the steps below to improve signal strength:
The antenna symbol disappears from the clock display when the time signal has been lost.
Solution: This indicates that the antenna may need repositioning to receive the time signal. See in-adequate signal strength above. Possible causes of Interference to the Time Signal.
The MSF signal can be received at distances upto 1500km from Rugby (Midlands, UK), where the signal is based. The signal covers all of the UK and parts of continental Europe. The DCF signal is based in Frankfurt and covers a range of 1500km which encompases most of Western Europe. The range of the WWVB signal can be seen in the diagram below.
As with your Television or Radio, you may have difficulties in receiving a strong signal because of position or atmospheric conditions. electrical appliances, motors, TV's or computers may interfere with the reception. You may experience poor reception in low lying areas and in metal buildings.
The MSF Annual
Maintenance Period in 2001
0.2 mm four core security \ alarm cable is required between the antenna and clock unit. CAT 5 structured cabling can also be used.
cable length from the antenna unit to the clock unit is 150m. The recommended
cable specification is 4 core alarm cable. CAT 5 structured cabling can
also be used.
Click here to go to the Galleon official UK website Galsys
Click here to go to the Galleon official US website NTP Time Server
Telephone Galleon: 0121 608 7230 | International:+44 870 608 3615