User Manual

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Configuration
Rev. B - 1/97
3-15
of the master unit at the repeater site so that the slave at the repeater site
provides the burst synchronization signal for the master unit of the next
segment of the link.
Repeater Variations
If other AirLink Pro T1/E1 Rack Mount units are located at the repeater site,
the repeater site is treated as a hybrid hub, where the added units are wired to
the burst synchronization signal pairs of the slave at the repeater site and
synchronize their transmit bursts to the burst synchronization signal from the
slave at the repeater site. These units can be configured as either secondary
masters at a hub (application 2) or as master units at a repeater site
(application 5).
If the entire repeater link is set up as a point-to-point link, the AirLink Pro
T1/E1 Rack Mount unit that serves as the near-end unit in the entire repeater
link can be configured as a master unit in a point-to-point link (application 4).
The AirLink Pro T1 unit that serves as the far-end unit for the entire repeater
link is configured as a slave unit in a point-to-point link (application 6).
If the entire repeater link originates from a hub, the AirLink Pro T1/E1 Rack
Mount unit that serves as the near-end unit in the entire repeater link can be
configured as either a primary master at a hub (application 1) or a secondary
master at a hub (application 2). The AirLink Pro T1/E1 Rack Mount unit that
serves as the far-end unit for the entire repeater link is configured as a slave
unit in a point-to-point link (application 6).
Burst Mode
Burst Mode describes the transmit timing relationship between the master unit
and the slave unit. In Normal mode, the master unit initiates burst timing and
the slave unit times its responses to the timing from the master. The master unit
transmits for a time, then listens for a time; the slave waits until the master
unit is listening, then transmits. In Test mode, the master transmits a constant
RF using the QRSS data pattern; the slave only listens.
NOTE Test mode should only be used for alignment and testing under the direction of Cylink
personnel. In ordinary operation, the unit should be set for Normal operation.
To set the burst mode for the local AirLink Pro T1/E1 Rack Mount, type the
following command at the AirLink Pro T1/E1 Rack Mount prompt:
AIRLINK PRO T1/E1> set burst mode operand