Orban OPTIMOD-FM 5700i, Руководство по эксплуатации

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OPTIMOD-FM DIGITAL INSTALLATION
2-55
1. Navigate to SETUP > NEXT > TIME DATE AND ID > NEXT > TIME SYNC.
A) Use the P
ROTOCOL
control to choose either T
IME
P
ROT
or SNTP.
•
Select T
IME
P
ROT
if the Optimod is behind a firewall that does not pass UPD
packets. T
IME
P
ROT
selects the Time Protocol as described in the standard
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
YNC
P
ERIOD
, choose how often your Optimod will automatically update
its internal clock to the timeserver you selected.
The choices are
O
FF
,
8
HOURS
, and
24
HOURS
.
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
to the difference (in hours) between your time zone and Uni-
versal Time (UTC).
UTC is also known as GMT, or Greenwich Mean Time.
•
The value can range between –12 and +12 hours in increments of 30 min-
utes. If this value is set to 0, your Optimod’s time will be the same as UTC.
•
You can empirically adjust this value until the correct time for your location
is displayed after you synchronize your Optimod to a timeserver.
2. Choose a timeserver.
timeservers available on the Internet. You network may also have a local time-
server; ask your network administrator.
3. Press the NEXT button to set up timeserver parameters.
The T
IME
S
ERVER
button is located on the second page of the T
IME
S
YNC
func-
tions. (You can access this function from anywhere in the Optimod menu tree by
navigating to
Setup > Next > T
IME
D
ATE
A
ND
I
D
> Next > T
IME
S
YNC
> Next .)
You can specify the timeserver either from your Optimod’s front panel or from
its PC Remote software. From the front panel, you can only enter the time-
server’s IP address (for example, 192.43.244.18). If you specify the timeserver
from PC Remote, you can specify either its named address (for example,
time.nist.gov) or its IP address. The PC Remote method is easier.