Installation & Operation Manual TCC70XS
Page 51
3.2.8.3 NTP Status and Troubleshooting
The NTP server indicates its status at the “Stratum” and “Reference” fields.
Refer to the following table to interpret the given information:
Stratum: 0
Reference: INIT
The internal real
–
time clock has not received any valid time update since power has turned
on.
This state sets an alarm condition in the NTP message:
LI
= 3 = clock not synchronized.
Possible causes if “Reference –
Source = External PPS + Serial
“ has been selected at the
Reference
configuration page of the 3G
–
Video module:
•
The external real
–
time reference is not connected,
•
or does not send valid data,
•
or the serial protocol does not match the protocol selected at “Reference –
Format“ at
the
Reference
configuration page of the 3G
–
Video module.
Possible causes if “Reference –
Source = NTP Client“ has been selected at the
Reference
configuration page of the 3G
–
Video module:
•
The NTP client is disabled (checkbox
enable
at the
NTP Client
configuration page of
the Ethernet module must be checked),
•
or the NTP client cannot connect to an NTP server (verify the IP addresses).
The status monitor of the 3G
–
Video module offers further help with its
Time and Date
page:
at
external reference
status “
connected before
“ and “
accepted before
“ indicate
s whether a
valid time & date has been received at all.
Stratum: 1
Reference: GPS
Normal operating mode. The real
–
time method of operation works faultless. The internal
real
–
time clock has received an update during last 24 hours by a reference which indicates
“Lock” state
and
the frequency and phase synchronization of the time code generator works
normal.
[Stratum = 1 requires setting “Fudge Stratum“ to 1]
Stratum: > 1
Reference: 0.0.0.0
“Reference“ will be set to “0.0.0.0“ for any stratum values > 1.
There are various possible
causes for a stratum > 1:
A
Fudge Stratum
set to > 1 (please refer to chapter “NTP Server“). In this case the stratum
