Model: MC-1-DE
Doc Ref. No:-m05dom102
Issue No:-00
Page 73 of 76
User’s Manual
4) User should configure the IP address of all Ethernet outputs as per network domain configura-
tions where GPS TIME SYNC UNIT MC-1-DE device is to be installed. User can configure IP
address of Ethernet port using telnet connection with respective Ethernet NTP port. It is rec-
ommended to Power recycle the unit after all Ethernet NTP ports are configured with new IP
address.
Not able to configure IP address of Ethernet Port
1) Refer points 2 & 3 of troubleshoot index.
2) For configuring new network settings of particular Ethernet port, user should enter old IP ad-
dress of GPS Ethernet port during telnet communication. Ensure that pinging with old/previous
IP address of GPS Ethernet port should be stopped before proceeding for IP configuration. It
is also recommended to stop all IP related process such as NTP, SNMP with the old GPS IP
address before starting IP configuration.
3) At a time, only one telnet communication with particular Ethernet port of GPS TIME SYNC
UNIT MC-1-DE device is allowed.
4) It is necessary to exit the telnet communication after doing necessary Ethernet settings failing
of which, GPS TIME SYNC UNIT MC-1-DE will not allow to reconnect with telnet session on
same IP address. Please refer section 11.1 & manual Appendix E1 for telnet session and con-
figuration.
NTP client not synchronizing with GPS NTP output port
Following steps are to be checked for issues of NTP communication failure or NTP client time not
synchronizing with GPS NTP Server port.
1) IP address of GPS NTP port and NTP client device should be same network domain.
2) Please verify the Ethernet connection between GPS NTP port and NTP server device by ping-
ing the IP address of GPS NTP port. If IP address of GPS NTP port is not reachable, NTP
communication will be failed. Refer troubleshooting index.
3) GPS NTP Server port IP address should be properly configured in NTP client device.
4) Various NTP parameters should be configured properly in NTP client device.
5) If ntp client device is a computer machine based on Windows or Unix based or Linux based,
please refer manual m05om101_01_ Appendix C_Issue No 04 for proper configuration and
time synchronization method of client device.
6) Please refer section 9.3.3. and manual m05om101_01_ Appendix C _Issue No 04 for under-
standing NTP client time synchronization method.
Loss of time synchronization by NTP Client during GPS Unlock
If NTP client loses time synchronization when GPS TIME SYNC UNIT MC-1-DE is in Unlock con-
dition and resume when GPS TIME SYNC UNIT MC-1-DE comes in LOCK condition, check the
configured NTP stratum value in GPS Time Sync Unit device. It should be less than 15 or appli-
cable value depending on NTP hierarchical architecture arrangement as explained in section 9.3
and 9.3
