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K
EYPAD
4.5.3.1 Interpretation of Errors
With the display frame of the satellites errors in the receiving system can be identified.
Example 1:
Possible causes:
• the antenna cable is defective
• the antenna cable is not connected
• the antenna is defective
• the lightning protector is defective
Example 2:
Possible cause:
• There is limited visibility of the sky from the antenna.
Example 3:
Possible cause:
• The cable is too long
• The BNC connecter has been wrongly installed
• The cable is crushed or bent
• The cable has the wrong impedance value
• The conditions for reception are extremely bad (e.g. damp, heavy snowfall)
Example 4:
Possible cause:
• The cable has been damaged
• There was a stroke of lightning and the lightning protector is defective
• Antenna defective
• Receiver defective
• Voltage supply unit defective
7001GPS Satellite Clock System - V08.00
hopf Elektronik GmbH
Nottebohmstr. 41 • D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: info@hopf.com
There is no satellite in the display even after several hours when the equip-
ment is first installed.
There are 7 satellites in the visibility range, but only a maximum of 2 appear in
the display.
There are 9 satellites in the visibility range, 6 have been traced, but the
equipment is not synchronised, since the signal/noise ration is between 10-30.
Previously the equipment has functioned perfectly. 7 satellites appear in the
visibility range but none is tracked - there has been no reception for several
days.
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