User's Manual

SBS-900 Shore Based Radar Systems
Chapter 10: Corrective maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 153 of 240
10.7.8 SBS-A126 Switch Control & BITE PCA
10.7.8.1 Overview
The Switch control and BITE PCA system is a non-critical link in the system where one or two
SharpEyeTM transceivers are located within the same enclosure and share a single antenna sub-
system.
The role of the Switch control and BITE PCA is to:
' Derive power for the +5V advanced antenna sub-system ACP/ ARP encoder.
' Derive power for the +28V waveguide switch.
' Provide power to the +15V Standard antenna sub-system ACP/ ARP encoder.
' Monitor and digitally transmit voltage levels via RS422.
' Monitor system states and transmit via RS422 to the RDU.
' Monitor enclosure temperature using on-board sensor and transmit via RS422 to the RDU.
' Receive commands via RS422 and activate waveguide switch and polarisation switch.
' Ccmnlc\on_ Rcah[fm `lig nb_ @hn_hh[ _h]i^_l ni nb_ Rb[ljDs_x nl[hm]_cp_lm [h^ nb_ QCT-
' Clcp_ nb_ \f[hecha ionjonm `lig nb_ Rb[ljDs_x nl[hm]_cp_lm ni nb_ QCT-
' Allow throughput of video, sync and CAN signals to transceiver B.
Tx A Tx B
PSU
A
PSU
B
Switch control and BITE PCA
RDU
Antenna Sub-System
Switched Mains B
Fibre Control and Ststus
Control & Status
Motor On
Blanking Blanking
Motor On
Switched Mains A
RS422 / Blanking A+B
Oil Level and Temp Status
DC / ACP / ARP / Fail
Polarization control & status
DC Power
440V Motor Drive
DC PowerDC Power DC Power
Waveguide
Waveguide
Waveguide
Fibre Control and Status
ACP/ARP
CANBUS
CANBUS
Video & Sync
Vid & Sync
Optional
Cooling
Fans
RPM Data x6
Simplified Switch control and BITE PCA interconnection diagram