User Manual

BTR-30N, TR-30N, TR-32N Operation 41
Before presenting the configurations, we believe an explanation
of RF data links plus master and servant base stations helps in
understanding the multiple base arrangements.
Over-the-Air Data Links
There are two (2) RF data communication links within a BTR-
30N system.
• Beltpack-to-base conveys:
– Current button(s) selected
– Battery level
– Beltpack ID set confirmation
• Base-to-beltpack conveys
– Beltpack User ID
– Beltpack TX power level
– Beltpack TX and/or Talk Shutdown
– First-On-Latch-Out
FIGURE 57. Base-To-Beltpack and Beltpack-To-Base RF Data Links
These two (2) data paths are intact when there is only one (1)
base communicating to beltpacks. They are also intact when
many base stations on different TX and RX frequencies are
communicating to their beltpacks.
However, in a system with one (1) or more base stations with
their transmitters off, the base-to-beltpack data link is lost for
those beltpacks
A wired data link is needed to communicate the base-to-
beltpack information from the base stations with their
transmitters off to the base with its transmitters on.