User's Manual

Table Of Contents
Model 1150A DVOR
2-68 Rev. - November, 2008
This document contains proprietary information and such information may not be disclosed
to others for any purposes without written permission from SELEX Sistemi Integrati Inc.
012260-0001
Sideband Backplane
P1 & P2
60 Pin DIN
Connectors
RS422 to
CMOS TTL
Converters
Power
Switch
Fuse
+28VDC
OR'ing
Diodes
DC-DC
Converter
CMOS TTL to Bi-level
Converters
PIN Diode Drivers
Ground Check /
Antenna Select
Decoder
Regulator
Regulator
+5VDC
+3.3VDC
-10VDC
+12VDC
-12VDC
Ground Check
Enable Strap
Power Monitor
SPI I/O
SPI
Temperature
(optional)
SPI
EEPROM
Power OK
LED
~TEST
SPI Control
Even Commutator
CCA 012104-0001
Odd Commutator
CCA 012104-0001
Dipole Antenna
Array - 48
elements
~MRESET ~PWR_OK
Figure 2-26 Commutator Control CCA, Block Diagram
2.3.2.22.2
Commutator Control CCA Detailed Circuit Theory
Refer to Figure 11-23. Commutator switch control signals from the Audio Generator CCA through connectors P1
and P2 are applied to the inputs of the Commutator Control CCA. These control signals consist of the four balanced
antenna select signals, a transfer signal, and a clock signal applied to quad differential line, receivers U5 and U6.
Two inputs of U6 are not used and are tied to power or ground.