Synchronizing Optimod To A Network Time Server - Orban OPTIMOD-FM 5500 Operation Manual

2-46
INSTALLATION

Synchronizing Optimod to a Network Time Server

[Skip this section if you do not wish to automatically synchronize your Optimod's in-
ternal clock to a network timeserver, which may be part of your local network or lo-
cated on the Internet.]
1. Navigate to SETUP > NEXT > TIME DATE AND ID > NEXT > TIME SYNC.
A) Use the P
ROTOCOL
 Select T
P
IME ROT
packets. T
IME
RFC868. This method uses TCP on port 37.
 Select SNTP if your network timeserver supports the Simple Network Time
Protocol as described in standard RFC1769. This method uses UDP on port
123.
Ask your network administrator which protocols are available. SNTP is
slightly more accurate.
B) Using S P
YNC ERIOD
its internal clock to the timeserver you selected.
The choices are O
If the connection to the timeserver fails (due to network overload or
other problems), your Optimod will try once per hour to synchronize un-
til it is successful.
C) Set the O
FFSET
versal Time (UTC).
Name
time-a.nist.gov
time-b.nist.gov
time-a.timefreq.bldrdoc.gov
time-b.timefreq.bldrdoc.gov
time-c.timefreq.bldrdoc.gov
utcnist.colorado.edu
time.nist.gov
time-nw.nist.gov
nist1.symmetricom.com
nist1-dc.glassey.com
nist1-ny.glassey.com
nist1-sj.glassey.com
nist1.aol-ca.truetime.com
nist1.aol-va.truetime.com
nist1.columbiacountyga.gov
control to choose either T
if the Optimod is behind a firewall that does not pass UPD
P selects the Time Protocol as described in the standard
ROT
, choose how often your Optimod will automatically update
, 8 , and 24
FF HOURS HOURS
to the difference (in hours) between your time zone and Uni-
IP Address
129.6.15.28
129.6.15.29
132.163.4.101
132.163.4.102
132.163.4.103
128.138.140.44
192.43.244.18
131.107.1.10
69.25.96.13
216.200.93.8
208.184.49.9
207.126.98.204
207.200.81.113
205.188.185.33
68.216.79.113
Table 2-1: NIST-referenced timeservers
ORBAN MODEL 5500
or SNTP.
P
IME ROT
.
Location
NIST, Gaithersburg, Maryland
NIST, Gaithersburg, Maryland
NIST, Boulder, Colorado
NIST, Boulder, Colorado
NIST, Boulder, Colorado
University of Colorado, Boulder
NCAR, Boulder, Colorado
Microsoft, Redmond, Washington
Symmetricom, San Jose, California
Abovenet, Virginia
Abovenet, New York City
Abovenet, San Jose, California
TrueTime, AOL facility, Sunnyvale, Cali-
fornia
TrueTime, AOL facility, Virginia
Columbia County, Georgia