User Manual

Exalt Communications, Inc.
Exalt i-Series Installation and Management Guide
5000001 31
2007-06-25
• Bandwidth – It is desirable, but not always necessary, to match the bandwidth for all
collocated links.
For complex networks, an Exalt engineer should review multi-link networks before
deployment as several factors can optimize the network for desired performance.
External Synchronization
Use an external GPS source as an alternative to the internal synchronization source for
system synchronization. This is ideal for links that are nearby each other, but are not
directly collocated at the same site. Figure 7 illustrates using a GPS source for the
primary synchronization at a typical site with collated radios.
Figure 7 GPS as primary sync source using AUTO SYNC
Figure 8 illustrates two separate radio locations benefiting from synchronized GPS
sources.
Figure 8 Synchronized GPS sources using AUTO SYNC
Offset Timing
Manual control of offset timing is also allowed. This provides a means to delay the
synchronization signal using a user-defined offset. This is helpful when Exalt radios are
near other devices operating in the same frequency band that also use a timing source,
AUTO
SYNC
(A)
FAR-END
RADIO
(B)
SYNC
IN
GPS
ANTENNA
AUTO
SYNC
(A)
FAR-END
RADIO
(B)
SYNC
IN
GPS
ANTENNA
SYNC
RECIPIENT
(A)
SYNC
IN
GPS
ANTENNA
AUTO
SYNC
(A)
SYNC
OUT
SYNC
IN
FAR-END
RADIO
(B)
FAR-END
RADIO
(B)