Siemens SINAUT ST7 - Technical Specifications of the Radio Clock Components

Introduction to the SINAUT ST7 system
1.7 Radio clock components
Station control system
54 System Manual, 07/2009, C79000-G8976-C178-07
Short name Order no. Explanation
GPS kit 6NH9831-8AA GPS complete package for simulating the DCF77 time signal,
consisting of GPS receiver, GPS outdoor antenna including
25 m cable, BNC adapter connector, configuration software,
PC adapter cable, and documentation.
GPS IND-BS 6NH9831-8LA Lightning protector for GPS outdoor antenna.
1.7.4 Technical specifications of the radio clock components
Technical specifications of DCF77 antennas
DCF77 antennas
General
Power supply (over antenna cable) 1.7 to 5 V DC
Impedance 50 ohms
Power gain 20 dB
Max. cable length without amplification 250 m
Plastic housing Light-resistant
Bandwidth 4 kHz
Indoor antennas
Humidity 95% no condensation
Degree of protection IP50
Temperature range
• Operation
• Storage
• 0 °C through +80 °C
• -50 °C through +85 °C
Outdoor antennas
Wind load max. 180 km/h
Degree of protection IP65
Temperature range
• Operation
• Storage
• -30 °C through +80 °C
• -50 °C through +85 °C
Humidity 100%
Lightning protection
Housing material Die cast aluminum housing
Dimensions (W x H x D) in mm 250 x 105 x 95
Weight Approx. 3.5 kg
Grounding point
• Thickness of copper strand
• length of copper strand
M6 threaded connection
• min. 10 mm2
• max. 10 m
Current pulse withstand 8/20 µs wave 10 kA
Response time < 1 ns