Meinberg GPS163TDHS, Руководство по эксплуатации

Страница: 21 / 34

21
ACCURACY OF
PULSES:
better than ±1 µsec after synchronization and 20 minutes of
operation
better than ±3 µsec during the first 20 minutes of operation
SERIAL PORTS: 2 independant asynchronous serial ports
COM0 (RS-232)
Baud Rate:
300 up to 19200
Framing: 7N2, 7E1, 7E2, 8N1, 8N2, 8E1
COM1 (RS232, for internal use only)
Baud Rate:
300 up to 19200
Framing: 7E2, 8N1, 8O1, 8E1
time string selectable for COM0 and COM1
‘standard Meinberg’, ‘SAT’, ‘NMEA’ or ‘Uni Erlangen (NTP)’
default settings: COM0: 19200, 8N1
COM1: 9600, 8N1
‘Standard Meinberg’
time string per second
mode of operation ‘if sync’
TIME CODE
OUTPUTS:
modulated via BNC-connector:
IRIG:
3V
PP
(MARK), 1V
PP
(SPACE) into 50
Ω
AFNOR: 2.17V
PP
(MARK), 0.69V
PP
(SPACE) into 600
Ω
modulated via DSUB-connector:
Field effect transistor with internal pull-up (1k
Ω
) to +5V
Data of transistor:
Uds
max
= 100 V, Id
max
= 150 mA, P
max
= 250 mW
TTL into 50
Ω
RS422
DCF77
EMULATION:
AM-modulated 77.5 kHz carrier frequency
usable as replacement for a DCF77 antenna
output level approximately -55 dBm (unmodulated)
active after reset