T
ECHNICAL
D
ATA
System 6844(RC) - V03.00
151 / 157
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
Synchronisation Source:
hopf
Master/Slave String
every second
(
hopf
GPS System 6844RC
)
Interne System Accuracy (System-PPS)
(1)
hopf
Master/Slave String every second with ETX at second change at 9600Baud
Accuracy
(2, 4)
< + 7µsec
Jitter
(2)
< ± 3 * 10
-6
Freewheel stability
(2, 3)
< ± 5 * 10
-7
Synchronisation Source:
hopf
Master/Slave String
every minute
(
hopf
DCF77 System 6855
)
Interne System Accuracy (System-PPS)
(1)
hopf
Master/Slave String every second with ETX at second change at 9600Baud
Accuracy
(2, 4)
< ± 60µsec
Jitter
(2)
< ± 1 * 10
-6
Freewheel stability
(2, 3)
< ± 2 * 10
-6
Synchronisation Source:
hopf
Master/Slave PPS
(
hopf
GPS System 6844RC)
Interne System Accuracy (System-PPS)
(1)
Accuracy
(2, 4)
< ± 80ns
Jitter
(2)
< ± 3 * 10
-8
Freewheel stability
(2, 3)
< ± 1 * 10
-7
Comment
(1)
The System crystal frequency is the leading factor for the generation of system-PPS and 1 kHz (msec) and is
thus crucial for the system accuracy.
(2)
after at least 30 minutes of continuous synchronization at constant temperature
(3)
after 30 minutes synchronisation loss at constant temperature
(4)
absolute to input signal
11.3.2 Signal Outputs
Serial Independent Full-duplex Interfaces in RS232 and RS422
COM0 und COM1
Serial strings
with ETX at second change
Baud rate
Accuracy ETX
(at System-PPS)
2400 Baud
+350µs .. +750µs
4800 Baud
+240µs .. +450µs
9600 Baud
+190µs .. +300µs
19200 Baud
+160µs .. +220µs
hopf
Master/Slave String (intern)
mit ETX zum Sekundenwechsel
9600 Baud
see System PPS
