TECHNICAL DATA |
|
Hardware |
|
NeoClock D |
DCF version |
Time base |
Atomic clocks of the PTB (German Federal Institute of Physics and Metrology), Brunswick |
Transmitter |
DCF77 transmitter in Mainflingen, Frankfurt, operated by Deutsche Telekom |
Transmission frequency |
77.5 kilohertz, amplitude-modulated |
Transmitter power |
50 kW |
Range |
About 1000 to 1500 kilometres |
Aerials |
Two aerials arranged at right angles to each other |
Receivers |
Two receivers |
NeoClock F |
TDF version |
Time base |
LPTF – Laboratoire Primaire du Temps et des Fréquences. International institute also coordinating the Universal Time Coordinate (UTC). |
Transmitter |
TDF transmitter in Allouis near Paris, operated by France Inter |
Transmission frequency |
162 kilohertz, phase-modulated |
Transmitter power |
2000 kilowatt, 600 watt reserve transmitter |
Range |
About 2500 to 3500 kilometres |
Aerials |
Two aerials arranged at right angles to each other |
Receivers |
Two receivers |
Common technical specifications |
DCF77 and TDF versions |
Aerials |
Two ferrite aerials built into enclosure at right angles to each other |
Built-in crystal clock |
Lithium backup battery, 8 year reserve capacity
Inaccuracy: Max. +/- 0.165 seconds per day (at 0 to 40 °C ) |
Accuracy at radio reception (hardware) |
+/- 20 milliseconds |
Maximum deviation from atomic time |
- Less than 0.2 seconds with radio reception (depending on operating system and network transmission times)
- Less than 5 seconds after signal failure of 1 month |
Server connection |
Through standard serial V.24 interface, 9-pin plug |
Cable |
Built-in cable, 5 metres, prefabricated with 9-pin socket, can be extended to up to 100 metres |
Power supply |
Through V.24 interface, less than 5 mA power consumption |
Specifications, office housing |
 |
Enclosure |
Plastic enclosure, stand for desktop operation, bracket for wall mounting (recommended) |
Operating temperature |
0 – 65 °C |
Humidity |
Non-condensing |
Dimensions |
Diameter 160 mm, height 45 mm |
Weight |
0.75 kg with cable |
Specifications, outdoor industrial housing |
 |
Operating temperature |
-20 – 70 °C |
Humidity |
0 – 100 % |
Degree of protection |
IP 67 |
Dimensions |
Width 180 mm, length 130 mm, height 35 mm (without wall bracket) |
Weight |
0.75 kg with cable |
