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4.3.6.6 Bit 2: Master/Slave-String Evaluation
Bit 2 = 0 - Standard evaluation with other string information:
This setting should be selected when the 7001 system is to be synchronised directly with a
Master/Slave-String (e.g. without module 8023). In this case all information contained in the
master /slave string is evaluated, such as Summertime-/ Wintertime signalling bits, the time
zone and the time difference to UTC.
Bit 2 = 1 - Special evaluation for use with sync. module 8023:
Required setting for operating with module 8023. See technical specifications for Module
8023 for details.
4.3.6.7 Bit 1 and Bit 0: Summertime-/ Wintertime Switchover Signalling Bit
Validity: DCF77 and Slave Systems
Bit 1 selects independently of the synchronisation source status - whether the signalling
bit for Summertime-/ Wintertime switchover is activated by the synchronisation source or by
the internally set switchover times in the 7001 system.
Bit 0 selects fundamentally whether the switchover times are used only by the synchronisa-
tion source or only by the internally set switchover times in the 7001 system. The status of
the synchronisation source remains unaffected.
The combinations of Bit 0 and Bit 1 therefore give the following system behaviour:
Bit 1 Bit 0 Setting the Summertime-/ Wintertime signalling bits
0
0
0
1
1
0
1
1
7001GPS Satellite Clock System - V08.00
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In order for the signalling bit setting for Summertime-/ Wintertime switchover
to function correctly and also for the time zone bit to be accepted, both Bits
1 and 0 in the SYSTEM BYTE must be set to "0" (see Chapter 4.3.6.7 Bit 1
and Bit 0: Summertime-/ Wintertime Switchover Signalling Bit)!
In order to avoid an erroneous hour leap on a Summertime-/ Wintertime
switchover, the time base of a source that transmits local time must execute
the Summertime-/ Wintertime switchover in the same way.
Signalling bits are set by the external source only.
Signalling bits are set via the external source depending on the system
status of the external source or via the internal switchover times:
•
Signalling bits are set by the external source provided that this deliv-
ers valid time information.
•
Signalling bits are set by the internal switchover times of the 7001
system when the external source is not available.
Signalling bits are only set in accordance with the internal switchover times
of the 7001 system (e.g. required for synchronisation with module 8023).
Signalling bits are only set via the internal switchover times of the 7001 sys-
tem (e.g. required for synchronisation with module 8023).
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