DOC 4380A
4380A O & M Manual
76
098-00723-000
– Jul 2017 Revision 4.0
SyncSystem 4380A O&M Manual
Appendix A System Specifications
A.1 Environmental
Operating Temperature
0° - 50° C, 95% Humidity, non-condensing
Storage Temperature
-20° - 70° C, 95% Humidity, non-condensing
A.2 Physical
Size
19”W x 19”D x 1.75”H.
Weight
20 Lbs (9.1kg) - two power supplies & 4 plug-in modules.
A.3 10 MHz Sinewave Input
Quantity
1
Connector Type
BNC (F)
Input Power
+10dBm ±3dBm
Input Impedance
50 Ω
A.4 Timing Performance
UTC(USNO) Offset (w/ GPS)
-
Precise Calibration
10 ns RMS
-
Coarse Calibration
100 ns RMS
Allan Deviation (Locked to GPS)
1s 6E-13
10s 8E-13
100s 8E-13
1000s 6E-13
10000s 6E-13
100000s 1E-13
Temperature Stability
3E-10 (0 to 50° C)
Frequency Accuracy
1E-13 @ one day
Holdover Accuracy, 10Mhz Output
5E-11/month with internal Rb reference
Holdover in external reference mode is dependent on the
external reference
A.5 Ethernet Interface
Quantity
1
Connector
RJ-45
Protocol
TCP/IP
Speed
10/100 Base-T
Network Time Protocol (NTP) Server
NTPv4 as defined in RFC-5905 compatible with NTPv3 (RFC-
1305) and earlier versions.
-
Stratum
Level 0/Level 1 when locked to GPS
-
Client Support
~100 client requests per second
File Transfer Protocol
-
Log Files
User:ftp, Password: ftp
-
Software Update
User: ftp, Password: ftp
Ports
-
Command Port
1700
-
Debug Port
1800
-
Status Port
1900
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