Specifications

Airmux-200 Ver. 1.750 Introduction F-1
Appendix F
Hub Site Synchronization
F.1 Introduction
HSS is an ordering option, Airmux-200 ODU units are supplied with special
hardware for the collocation of several units, using a method called Hub Site
Synchronization (HSS). HSS uses an external cable connected to all collocated
Airmux-200 radios. This cable carries pulses sent to each radio, which synchronize
their transmission with each other.
This pulse synchronization ensures that the transmission of packets occurs at the
same time for all collocated units. This synchronized transmission also results in
all of the hub units receiving data at the same time, eliminating the possibility of
interference that could result if some units transmit while other units at the same
location receive. HSS supports installation of up to eight collocated units.
Figure F-1 shows interference caused by non-synchronized collocated units.
Figure F-1. Interference Caused by Collocated Units