User's Manual

SBS-900 Shore Based Radar Systems
Chapter 6: Local operation instructions
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 42 of 240
6.3.2 Switch OFF
Switch OFF: The following describes how to switch OFF the SBS-900 system for operation purposes.
The following does not include the switch OFF/ shut down procedures for the track extractor, optional
service display or external equipment attached to the system.
System isolation: Please refer to the maintenance section of the system handbook (KH-1602-2) for
details on isolating the system from the mains supplies for maintenance purposes or working aloft.
Caution
The following details switching the SBS-900 system OFF for operation purposes only.
The following must not be used as a primary means of system isolation for maintenance
procedures or working aloft.
Radar
Distribution
Unit
Safety
Switches
Place the Antenna Rotation keyswitch on the front of
the Radar Distribution Unit into the OFF position.
This removes all AC power to the DTX-A7
Transceiver Enclosue and the Antenna sub-system
As an additional safety precaution, when in the OFF
position the key can be removed.
Keyswitch on door of RDU
Radar
Distribution
Unit
AC power
Place all three breakers within the Radar Distribution Unit to the OFF position.
System status:
- The Radar Distribution Unit is switched OFF but is not isolated from the AC
input supplies.
- The DTX-A7 Transceiver Enclosure is switched OFF thus stopping any
transmission.
- The antenna sub-system is switched OFF and will not rotate.
The LED indicators on the breakers remain illuminated.
Note
Note: The LED indicators located on power breakers are an indication that mains voltages are present. They are NOT an
indication that the breakers are switched ON.