Meinberg PZF510 - Manual (Page 18)

18
Technical specifications
RECEIVER: Direct conversion quadrature receiver with automatic gain control
Bandwidth: approx. 20Hz, external ferrite antenna
CONTROL OF
RECEPTION:
The DCF-signal is checked for minimum field strength by micro-
processor. The result is indicated by LED.
In addition, the value of the digitized field strength is displayed
in menu 'FIELD'.
BATTERY-
BACKUP:
In case of power failure an internal realtime clock runs crystal-
precise. Important parameters are stored in the system-RAM.
Life time of lithium battery: 10 years minimum
Option: capacitance-backup for about 150 hours
DISPLAY: Eight-digit alphanumeric display shows important time and
status information. Digit-height 5mm.
INTERFACES: Two independant asynchronous serial ports (RS232)
BAUD RATES: 600, 1200, 2400, 4800 oder 9600 Baud
FRAMING: 7O2, 7N2, 7E1, 7E2, 8N1, 8N2 oder 8E1
PULSE
OUTPUTS:
Active-high and active-low pulses per minute and per second,
TTL-level, pulse duration 200ms
ACCURACY
OF PULSES:
Time delay of two systems PZF510 with a maximum distance of
50km: typ. 20µs, max. 50µs
Time shifting of successive pulses: max. 1.5µs
PROPAGATION-
TIME
COMPENSATION: The signal delay is compensated if the distance of the receiver to
the transmitter is given.
STANDARD
FREQUENCIES:
100 kHz, 1 MHz and 10 MHz are synchronized to DCF by a
digital PLL.
Accuracy in synchronized state: +/- 5·10
-9 (short term stability)
Accuracy in unsynchronized state: 1·10 -8 for one hour
77.5 kHz, 155 kHz und 310 kHz derived from receiver-PLL
Accuracy in synchronous state: +/- 5·10
-7 (short term stability)