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K
EYPAD
4.5.2 Changeover Times
Valid for all systems
With this function the calculated changeover times for the current year can be viewed.
Selection frame:
SHOW CHANGE-OVER DATES Y/N
Display frame:
STANDARD
DAYLIGHT
The changeover times for Central Europe in 2002 are shown as an example.
4.5.3 Satellite Values
Valid for GPS systems
To synchronise the GPS Master Clock System with UTC there must be 4 satellites visible
within range of the antenna, if the system is set to 3D synchronisation. In the optimal situa-
tion there are 9-10 satellites within the visibility range of the antenna, 8 of which can be re-
ceived parallel to each other. In position-fixed mode at least one satellite is required.
This sub-function shows how many satellites are theoretically within the visibility range,
which satellites are received and a relative mass for reception performance. It is especially
helpful to call this up when installing the equipment.
Selection frame:
SHOW SATELLITES Y/N
Display frame (Example):
V
T
SA/SI 05/72 09/78 30/54 06/38
10 05 SA/SI 25/72
The number of satellites which are visible at this location with the optimum positioning of the
antenna is shown under (V)isible. During the first reception process or after a longer power
failure the value at (V) is 00.
The number of satellites which can actually be tracked at present by the GPS receiver ap-
pear under (T)racked.
After (SA)tellite/(SI)gnal the number of the satellite appears together with the relative sig-
nal/noise ratio with which the satellite is tracked by the GPS receiver.
When the signal/noise ratio is bad
When the signal/noise ratio is adequate the values are
When the signal/noise ratio is good the values are
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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
DAYLIGHT 02.00.00 31.MAR.2002
STANDARD 03.00.00 27.OCT.2002
10 - 30
30 - 50
50 - 100
7001GPS Satellite Clock System - V08.00
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