Aviat Networks ECLIPSE EDGE, Руководство пользователя

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32 Aviat Networks
Chapter 3. Eclipse Edge Installation
• There is no Rx lock function - both ODUs are online receiving for hot-standby or
space diversity, and the IDU selects which output to use on a block-by-block basis.
• Both receivers can be accessed to provide RSL/RSSI data.
Hot Standby
This procedure details the additional steps required to ensure that no Tx protection
switching occurs during the alignment procedure, which may confuse results. It
assumes a common antenna at each end of the link.
NOTE:
The primary designated ODU is default online for Tx. Both ODUs are
online receiving - no Rx ODU switch will occur under no-signal
conditions.
1. At each end check the type of coupler installed; equal or unequal split.
2. For an
unequal-loss coupler , check which ODU is connected to the low-loss
side, as this is the ODU which must be locked as Tx online at both ends to assist
signal acquisition.
• For an equal-loss coupler it does not matter which ODU is Tx locked online at
each end.
3. Use the Portal > Diagnostics > System/Controls screen to check and set online Tx
locks.
4. Use the
Standard Alignment Procedure on page 31
to align the antennas, but
where unequal-loss couplers are installed always select the ODU connected to the
low-loss side to measure RSSI/RSL (default the primary ODU).
5. Return the Protected Link controls to Auto/Lock Off on completion.
Space Diversity
This procedure details the additional steps required to ensure that all four antennas
are in correct alignment and that during the alignment process no unwanted Tx
switching occurs.
1. Within the Portal > Diagnostics > System/Controls screen check which ODU is Tx
online. The primary designated ODU is default online for Tx.
2. Use the Protected Link controls to lock the primary ODU to Tx online at both ends
of the link.
3. Use the
Standard Alignment Procedure on page 31
to align the primary
antennas.
4. Align the far end secondary antenna from the near end primary antenna. Do not
adjust the near end primary antenna .
5. Align the near end secondary antenna from the far end primary antenna. Do not
adjust the far end primary antenna .
6. Use the Protected Link controls to lock the secondary ODU as Tx online at both
ends of the link and check that the RSSI/RSL figures match those obtained with the
primary Tx online (nominally within 2 dB).
7. Return the Protected Link controls to Auto/Lock Off on completion.