User's Manual

AN-50e
user manual
70-00033-02 Proprietary Redline Communications © 2004 November 2004
Page 54 of 96
for an additional thirty minutes. This cycle continues until no DFS trigger
events are detected or the operator manually reconfigures the system.
Chg Freq: Relocate transmission to alternative frequency immediately when
radar signals are detected. This action is recorded in the message log and a trap
message is sent (if SNMP enabled).
The new channel is selected based on allowable frequencies for the regulatory
region of that installation. The channel is monitored for one minute before the
system is allowed to transmit. If DFS triggering events are detected, the next
available channel is selected and monitored. The system is not allowed to
return to a channel on which DFS trigger events were detected for a period of
thirty minutes. If DFS trigger events are detected on all channels the system
suspends operation until the thirty-minute time interval expires for at least one
channel.
DFS Antenna Gain: Enter the gain (dBm) for the system antenna.
It is important that this value is set to correctly match the antenna gain. If the
antenna gain is set higher than the actual antenna gain, the DFS is less sensitive to
detecting interference, and the system is not operating in compliance with the
UK/ETSI standard. If the antenna gain is set lower than the actual antenna gain,
the DFS is more sensitive to detecting interference and may cause false triggers.
Important: The DFS Antenna Gain must be set when DFS is required by regional
regulations.
TX Power [dBm]: Enter the default tx power level (dBm).
Refer to section 8.3: Antenna and Power Specifications on page 82 lists the
maximum transmit power setting based on the antenna gain for a series of
frequency settings.
Note: In some countries outside of North America, the maximum operational
power per channel for a specific antenna is limited in accordance to maximum
allowable EIRP levels for the region.
Table 14: Max. Operational Power Per Channel (in dBm) vs. Modulation lists the
maximum transmit power levels for each modulation setting. Restrictions exist
when operating at data rates above 24 Mb/s.
Table 14: Max. Operational Power Per Channel (in dBm) vs. Modulation
64QAM ¾
(54 Mb/s)
64QAM ⅔
(48 Mb/s)
16QAM ¾
(36 Mb/s)
16QAM ½
(24 Mb/s)
QPSK ¾
(18 Mb/s)
QPSK ½
(12 Mb/s)
BPSK ¾
(9 Mb/s)
BPSK ½
(6 Mb/s)
Max Tx
Power
14 15 19 20 20 20 20 20
ATPC Enable: Check this box to enable the ATPC function. The master-end
system will automatically adjust the Tx level of both the master-end and remote-
end systems to optimize the system performance.