Product Manual
28 | Product Options
Aprisa SR+ Product Description 1.5.0
Protected Station
The Aprisa SR+ Protected Station is full monitored hot-standby and fully hot-swappable.
The Aprisa SR+ Protected Station provides radio and user interface protection for Aprisa SR+ radios when
configured as a base station. The RF ports and interface ports from the active Aprisa SR+ radio are
switched to the standby radio if there is a failure in the active radio.
Option Example
Part Number
Part Description
APSQ-R400-SSC-HD-22-ENAA
4RF SR+, PS, 400-470 MHz, SSC, Half Duplex, 2E2S, EN, AA
The Aprisa SR+ Protected Station is comprised of an Aprisa SR+ Protection Switch and two standard Aprisa
SR+ radios mounted in a 2U rack mounting chassis.
The Aprisa SR+ Protected Station is full monitored hot-standby and fully hot-swappable. All interfaces (RF,
data, etc.) are continually monitored on both the active and standby radio to ensure correct operation.
The standby radio can be replaced without impacting traffic flow on the active radio.
The Aprisa SR+ radios can be any of the currently available Aprisa SR+ radio frequency bands, channel
sizes or interface port options.
The Aprisa SR+ Protected Station can operate as a base station, repeater station or remote station. The
protection behaviour and switching criteria between the active and standby radios is identical for the
three configurations.
By default, the Aprisa SR+ Protected Station is configured with the left hand radio (A) designated as the
primary radio and the right hand radio (B) designated as the secondary radio.
Each radio is configured with its own unique IP and MAC address and the address of the partner radio.
On power-up, the primary radio will assume the active role and the secondary radio will assume the
standby role. If, for some reason, only one radio is powered on it will automatically assume the active
role.
Protected Ports
The protected ports are located on the protected station front panel. Switching occurs between the active
radio ports and the standby radio ports based on the switching criteria described below.
The protected ports include:
Antenna ports ANT/TX and RX (if dual antenna ports used)
Ethernet ports 1 and 2
Serial port