Model: MC-1-M (2U)
Doc. Ref. no. : m05/om/101
Issue no. 14
User’s Manual
Page 22 of 103
standard as per specified during unit order. If nothing specified, the factory set settings of COM1
terminal is as per RS-232 electrical standard output.
If Configuration of COM1 terminal is as per RS-232 standard, cross cable (having connection on
Pin2, 3 and Pin5) can be used to provide NMEA serial time frame to other peripherals. Pin 4 of
COM1 connector is used to provide 1PPS signal in RS-232 format.
If Configuration of COM1 terminal is as per RS-485 standard, Pin 7 of DB-9 connector will act as
D+ line and Pin 8 will be D- line.
GPS Master Clock Model MC-1-M model is available with additional max. 4 x NMEA RS-232
serial outputs as optional (total available additional outputs will vary considering other optional
output types provided) along with 1 NMEA serial output as standard option. Please refer optional
outputs section 15 for more information.
8. COM2 terminal:
Figure 5.10: COM2 terminal
COM2 terminal on back plane is RS-232/RS-485 electrical standard DB-9 female connector as
shown in figure 5.10. GPS Master Clock Model MC-1-M provides serial time frame T-format /
NGTS format on its COM2 terminal and can also be used for GPS Master Clock Model MC-1-M
configuration. This terminal connection will be as per RS-232 electrical standard or RS-485
electrical standard as per specified during unit order. If nothing specified, the factory set settings
of COM2 terminal is as per RS-232 electrical standard output.
If Configuration of COM2 terminal is as per RS-232 standard, cross cable (having connection on
Pin2, 3 and Pin5) can be used for configuration and to provide serial time frame to other
peripherals. Pin 4 of COM2 connector is used to provide 1PPM signal in RS-232 format.
If Configuration of COM1 terminal is as per RS-485 standard, Pin 7 of DB-9 connector will act as
D+ line and Pin 8 will be D- line.
9. GPS Antenna connector:
Figure 5.11: GPS Antenna terminal