User's Manual

Exalt Installation and Management Guide
ExtendAir G2 24GHz Digital Microwave Radios
50 209866-002
2015-09-09
ATPC Configuration Page
Automatic Transmit Power Control (ATPC) is often required by regulatory agencies for radio systems
in congested areas. The radio runs normally at a reduced output power level, and only raises its output
power when necessary, such as during a fade. Regulatory agencies may mandate the transmit power
standards used under normal conditions (set on the System Configuration Page
), the maximum
transmit power used with ATPC, ATPC-specific timers, and operator evaluations of the link if and
when mandated conditions are exceeded.
Figure 29 ATPC Configuration page
• Enable ATPC Mode to allow more radio links to share a spectrum providing less opportunity for
interference.
On the Diagnostic Charts Page
, the Far-End Transmit Power chart displays when any combination of
ATPC or Receiver Overload Protection is enabled.
• ATPC RSL Threshold determines the RSL where ATPC becomes active. When ATPC is enabled,
the far-end transmitter output power is increased to maintain the near-end ATPC receive threshold,
dB-for-dB, as the link fades or recovers. Enable ATPC on both ends of the link for proper
functionality.
• ATPC Max Tx Power controls the maximum power the radio transmits when ATPC is enabled.
The Radio Transmit Power value shown at the top of this table indicates that entry for ‘normal’
(low transmit power) operation, which is set on the System Configuration page.
• When the ATPC Timer Control timers are enabled, the ATPC maximum status alarm turns yellow
(minor) when the ATPC timers are exceeded (see Alarms Page
). If timers are mandated, set the