User manual

AN-80i User Manual
70-00072-01-10 Proprietary Redline Communications © 2011 Page 37 of 152 March 2, 2011
Tx Off: When radar signals are detected, the transmitter is immediatelly switched off,
an event message is logged, and configured SNMP trap messages are sent. After
thirty minutes the unit monitors the RF channel for one minute. If radar signals are
detected, the transitter remains disabled and the unit waits thirty minutes before
repeating the monitoring period. Normal operation resumes only when radar signals
are not detected during a one minute monitoring period.
Chg Freq: When radar signals are detected, the transmitter is immediatelly switched
off, an event message is logged, and configured SNMP trap messages are sent. The
unit changes frequency and monitors the new RF channel for one minute. If radar
signals are detected during the monitoring period, the tramsitter remains disabled
and the unit switches to the next frequency to be tested. Normal operation resumes
only when radar signals are not detected during a one minute monitoring period.
Antenna Gain: Enter the manufacturers specified gain (dBm) for the system antenna.
It is important to enter the correct value. If this value is set higher than the true gain, the
sensitivity will be too low and the AN-80i will not
be operating in compliance with the
UK/ETSI standard. If this value is set lower than the true gain, the AN-80i is more
sensitive to interference and may experience false triggers.
ATPC Enable: (PTP only) Check this box
to enable the AN-80i to monitor the
received signal and request that the remote system adjustment its transmit level for
optimum performance. The ATPC feature must be enabled on both units.
Important: When ATPC is enabled, use adaptive modulation for best results.
Adaptive Modulation: Check this box to enable the AN-80i adaptive modulation.
PTP: When enabled, the modulation/coding is automatically set to achieve the highest
UBR where packet error rates are lower than 1x10e-6. Higher packet error rates cause
the system to reduce modulation/code rate to maintain the wireless link quality (e.g.,
change from 16 QAM 3/4 to 16 QAM 1/2). When adaptive modulation is disabled, the
AN-80i will operate only at the modulation/coding corresponding to the UBR value in the
Uncoded Burst Rate field (refer to Table 5: PTP & PMP - Modulation/Coding for UBR).
The maximum UBR is limited to the Uncoded Burst Rate setting (v3.00/v11.00 or
higher).
PMP: See section 4.8.2: Link Configuration on page 52.
Modulation Reduction Level: (PTP only) Enter the number of modulation/coding levels
to step down during re-transmission of wireless packets. Each step down lowers the
UBR (e.g., change from 16 QAM 3/4 to 16 QAM 1/2). The level can be set from 0 to 7
(recommended value = 2). See Table 5: PTP & PMP - Modulation/Coding for UBR.
Uncoded Burst Rate [Mb/s]: Select the desired maximum UBR for the link *(maximum
UBR is limited by the options key). See the following table. When Adaptive Modulation is
enabled, this sets the maximum modulation/coding.
When Adaptive Modulation is disabled, the AN-80i will transmit using only the
modulation/coding corresponding to the specified UBR. S ee the following table. The
wireless link will be operational only if the AN-80i can meet the required BER.
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