Model: MC-1-DE
Doc Ref. No:-m05dom102
Issue No:-00
User’s Manual
Page 72 of 76
NOTE: Password used for unit parameters configuration through serial communication are differ-
ent. If user has forgotten its own configured password for serial configuration menu, user should
contact Masibus Service department.
Problem with getting unit LOCK to GPS satellites
1) It is always recommended to use factory provided antenna cable shipped with GPS TIME
SYNC UNIT MC-1-DE unit. If antenna cable used for installation is other than provided with
GPS TIME SYNC UNIT MC-1-DE unit, please contact Masibus Service department for assis-
tance.
2) GPS Antenna must be installed properly as per suggested in section 6.1.1 and 6.1.2.
3) GPS Antenna cable must be connected at the antenna connection on front panel of GPS
TIME SYNC UNIT MC-1-DE device.
4) Refer section 6.1.5 for antenna cable technical details.
5) Check Antenna cable continuity. Unplug the antenna cable connection from GPS Antenna and
antenna connector on GPS TIME SYNC UNIT MC-1-DE front panel. Short the Antenna cable
at any one end and check the continuity at other end using Digital MultiMate. If there is any
break in continuity, contact Masibus service department for rectification.
6) If antenna cable is proper, refer section 6.1.3 for further diagnostics.
7) If GPS TIME SYNC UNIT MC-1-DE device is able to capture very less number of satellites
even if the weather and sky is clear, try to re-orient the GPS antenna or relocate the GPS an-
tenna so that maximum number of GPS satellites is visible.
IRIG-B / IEEE 1344 client synchronization fail
Following steps are to be checked for issues of IRIG-B synchronization failure or loss.
1) IRIG-B BNC cable should be tightly connected and locked at GPS front panel IRIG terminal
and at IRIG-B client device terminal.
2) If IRIG client device terminal is other than BNC type connector, ensure that IRIG connection is
done with correct polarity at client device terminal end.
3) Total number of IRIG-B/IEEE 1344 compatible devices connected on the IRIG TTL or IRIG-
AM terminal of GPS TIME SYNC UNIT MC-1-DE be determined considering the maximum
electrical load capacity as specified in GPS TIME SYNC UNIT MC-1-DE specification. Refer
product specifications and section 9.2.2.4 for further details.
No response to Ping Command
Below steps are to be checked for troubleshooting the mentioned issue:
1) GPS TIME SYNC UNIT MC-1-DE is shipped with factory set Ethernet configuration (IP, gate-
way and subnet address) depending on the provided standard and optional Ethernet ports.
2) Check the connection route from GPS TIME SYNC UNIT MC-1-DE Ethernet port to end de-
vice and configuration of intermediate Ethernet switches and gateways. GPS TIME SYNC
UNIT MC-1-DE Ethernet port addresses of subnet and gateway should be configured as per
network domain architecture.
3) If the unit is directly connected to remote PC using RJ-45 cable, it is recommended to connect
unit through Ethernet switch or using cross RJ-45 cable configuration.
