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I
NTRODUCTION
2
Introduction
The hopf radio-controlled quartz clock system 7001, reliably proven since 1993, has now
been equipped with a new base board (7020). It can be synchronised through different time
code sources such as DCF77, GPS, IRIG-B
Additionally, the combination of 2 time code sources is possible in order to increase data se-
curity (see Chapter 4.3.6 System Byte).
Together with the standard quartz generator the base board 7020 can also be equipped with
a heat-stabilized quartz generator which can increase the freerunning accuracy of the sys-
tem to 2 x 10E-11 when synchronising via GPS.
As a result of the above-mentioned features this system is suitable for use as a Mas-
ter Clock System.
2.1
Power Supply
Since the system can be provided with a variety of power supply units, it is important, when
connecting the voltage, to pay attention to the voltage level and the polarity.
The following voltage supplies are standard:
• 230 V AC
• 120 V AC
•
80 V DC
•
48 V DC
•
24 V DC
Other voltage supplies are possible on request.
2.2
Antenna Installation
If GPS or DCF77 are to be used to synchronise the Master Clock System 7001, then it is
necessary to install the correct antenna. More details can be found in the GPS or DCF77
appendix.
3
not implemented yet
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
3
or serial data strings.
+10%, -15%
(Standard)
+10%, -15%
(Option)
(60 V - 120 V) (Option)
(36 V - 72 V)
(Option)
(18 V - 36 V)
(Option)
9 / 44
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