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K
EYPAD
The pulse length can be selected under H/L.
For the H pulse
For the L pulse
T-OUT
It might happen that a synchronisation error in the master clock system is not recognized by
connected sub-systems if the DCF77 signal which is emitted remains continuous.
With T-OUT it is possible to set the time delay between 4-255 minutes, from which time the
DCF77 signal will no longer be emitted if the synchronisation of the basic system fails.
The time depends on the required accuracy of the sub-system. For DCF77-synchronised
systems the time should be set to about 55 minutes, for GPS-synchronised systems it can
be 255 minutes.
STAT
With the status byte the following controls can be made:
B7
B6
B5
B4
B3
B2
B1
0
1
B0
0
1
4.3.8.1 Bit 7 to Bit 2
Bit 7 to Bit 2 are not yet assigned.
4.3.8.2 Bit 1
With Bit 1 the DCF77 simulation can be emitted independent of T-OUT and the synchronisa-
tion of the master clock system.
Bit 1 = 0
Bit 1 = 1
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
between 140 - 240 msec., 200 msec. is standard
between 070 - 120 msec., 100 msec. is standard
Unassigned at present
Unassigned at present
Unassigned at present
Unassigned at present
Unassigned at present
Unassigned at present
Description
DCF77 simulation output dependent on T-OUT and synchronisation
DCF77 simulation output permanent
Description
When there is interference or no synchronisation or T_OUT has fin-
ished there is no reduction in amplitude or pulse output
When there is interference or no synchronisation or T_OUT has fin-
ished, the amplitude and the pulse are modulated with approx. 2 Hz.
the DCF77 simulation emitted depends on T-OUT and the synchronisation of
the master clock system.
the DCF77 simulation is emitted permanently
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