© MOBATIME
114 / 124
801214.10
G
Technical data
Dimensions
19“ Rack, 1HU x 28PU (H x W x D [mm]) = 44.5 x 483 x 190
Weight
approx. 2.3 kg
Ambient temperature
0 to 50ºC, 10-90% relative humidity, without condensation
MTBF
> 250’000 h (Rubidium Oscillator > 150’000 h)
Expected lifetime
> 10 years, typical > 15 years
Operation
Telnet / SSH / MOBA-NMS (via LAN).
In addition, operation is also possible with SNMP.
Accuracy
“
GPS
” means: GPS RF input
Internal accuracy:
GPS
to internal time:
typ. < +/- 50ns
Redundant Link to internal time
typ. < +/- 50ns
PTP to internal time
typ. < +/- 200ns
DCF to internal time
typ. < +/- 200ns (after comp. fix offset)
E1 to internal time
typ. < +/- 200ns (frequency only)
Source to output:
GPS
to NTP:
typ. < +/- 100 µs
GPS
to PTP:
typ. < +/- 0.250 µs
GPS
to DCF:
typ. < +/- 5 µs
GPS to Pulse:
typ. < +/- 5 µs
GPS
to IRIG analog:
typ. < +/- 200 µs
GPS
to IRIG digital:
typ. < +/- 1 µs
GPS
to Pulse/ Freq. BNC:
typ. < +/- 200 ns
GPS
to Pulse/ Freq. CL and RS422: typ. < +/- 10 µs
GPS
to serial output:
typ. < +/- 10 ms (jitter < 10ms)
GPS
to SyncE:
G.811, G.812, G.813 compatible
GPS
to E1:
G.811, G.812, G.813 compatible
(depending on used oscillator)
Notice:
NTP reception (DTS 4160 as server to external NTP clients) can be
influenced by the network traffic load and network devices (Hub, Switch,
Router, Firewall...).
If many clients request simultaneously, the typical accuracy may not be
reached.
Time keeping (internal)
Holdover (free run)
After at least 7 days synchronization from the time source at 20°C +/- 5°C:
Type Oscillator Type
Short term stability
Drift
A
OCXO MV197-B5G
+/- 5*10E-12 / s
--
+/- 1*10E-7 / year
B
DOCXO MD-1731-DAT
+/- 5*10E-12 / s
+/- 6*10E-11 / day
+/- 1.5*10E-8 / year
C
Rubidium oscillator
+/- 3*10E-11 / s
+/- 2.5*10E-11 / day
+/- 1*10E-9 / year
Typical time till internal time base stable: 1 h
Redundant operation
Master to slave (optical DTS link):
typical < +/- 250 ns
Time server
NTP V4
(fully V3 compatible, RFC 1305), RFC 5905 (Port 123)
SNTP
(UDP), RFC 4330 (Port 123)
PTP
(UDP), IEEE 1588-2008 (V2) (Ports 319 and 320)
TIME
(TCP/UDP), RFC 868 (Port 37)
DAYTIME
(TCP/UDP), RFC 867 (Port 13)
Max. number of NTP and SNTP client requests:
> 10’000 requests / sec. per device
(e.g. client request every 60 sec.
600’000 clients)
Содержание 122031
Страница 22: ...MOBATIME 22 124 801214 10 MOBA NMS Tab Overview Frame Time time state...
Страница 78: ...MOBATIME 78 124 801214 10...
Страница 121: ...MOBATIME 121 124 801214 10...
Страница 122: ...MOBATIME 122 124 801214 10...
Страница 123: ...MOBATIME 123 124 801214 10...
