Quantum and Evolution Series Installation and Operating Handbook
7-89
7.3.3.2.3 Edit-Rx-Clocks-Source Screen
Options:
Satellite
This is the clock from the satellite. This is converted back to the rate
required at the terrestrial port.
Tx Clock In
The Tx path input clock is used to clock Rx data to the terrestrial port. This
is plesiochronous mode and requires the receive buffer to be set to a value
sufficient to accommodate both the difference in the clocks at each end of
the link and any Doppler shift, whilst providing the required interval
between buffer slips.
Internal
The internal reference clock is used to clock data to the terrestrial port. This
requires the receive buffer to be set as per the
Tx Clock In
option.
Station
If the station clock frequency is the same as the Rx data rate then the
station clock is used directly,. If the station clock is a different frequency to
the Rx data rate then an internal conversion to the correct frequency is
made. This requires the receive buffer to be set as per the
Tx Clock In
option.
Factory
default:
Satellite
Description:
Sets the source of the clock for the Rx path.
Rx-path clock source: [Satellite]
1:Satellite 2:Tx Clock In
3:Internal 4:Station
