9 Technical Appendix
9.1 Technical Specifications GNSS Receiver
Time to
one minute with known receiver position and valid almanac
Sychronization:
12 minutes if invalid battery buffered memory
Pulse Outputs:
HR and RX systems: eight programmable outputs (PP 1 - PP 8)
Timer, Single Shot, Cyclic Pulse, Pulse Per Second / Minute / Hour,
DCF77 Marks, Position OK, Time Sync, All Sync, DCLS Time Code,
Serial Time String, 10 MHz Frequency, Synthesizer Frequency, PTTI 1PPS
DC-insulated by optocouplers
U
CEmax
= 55 V, I
Cmax
= 50 mA, P
tot
= 150 mW, V
iso
= 5000 V
pulse delay:
t
on
e.g. 20
µ
sec (I
C
= 10 mA)
t
off
e.g. 3
µ
sec (I
C
= 10 mA)
Accuracy
after synchronization and 20 minutes of operation
of Pulses:
OCXO SQ/MQ/HQ/DHQ: better than
±
50 nsec
better than
±
2
µ
sec during the first 20 minutes of operation
Frequency
10 MHz, TTL level into 50 Ohm
Outputs:
1 MHz, TTL level
100 kHz, TTL level
Frequency
Synthesizer:
1/8 Hz up to 10 MHz
Accuracy of
base accuracy depends on system accuracy
Synthesizer:
1/8 Hz to 10 kHz
Phase syncron with pulse output P_SEC
10 kHz to 10 MHz
frequency deviation < 0.0047 Hz
Synthesizer
Outputs:
F_SYNTH:
TTL level
Serial Ports:
asynchronous serial port RS-232
Baud Rate:
300, 600, 1200, 2400, 4800, 9600, 19200 Baud
Framing:
7E1, 7E2, 7N2, 7O1, 7O2, 8E1, 8N1, 8N2, 8O1
Default Setting:
COM 0:
19200, 8N1
Meinberg Standard time string, per second
Time Code Outputs:
Unbalanced modulated sine wave signal:
3 V
pp
(MARK), 1 V
pp
(SPACE) into 50
Ω
PWM DCLS-signal:
TTL into 50
Ω
, active-high or -low
34
Date: 29th July 2021
microSync
