Справочник Пользователя для Selex Sistemi Integrati Inc. VOR2
Model 1150A DVOR
2-48
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.
DC-DC Converter
P2
60 Pin DIN41612
Hybrid Connector
~POWER_OK
From Control Backplane
~TEST
P1
96 Pin DIN41612
Connector
DC-DC Converter
+5V
Linear
Regulator
-5VA
+3.3V
19.6608MHz
Oscillator
U1
Programmable
Logic Device
Power OK Window
Comparators and
Power OK LED
Reset
Circuitry
2_+48Vdc
1_+48Vdc
32Kx16 Static RAM
J3
ISP
Connector
J1
Microphone
Jack
J2
Headphone
Jack
Digital
Buffers
SPI Signals
Parallel Bus
SPORT Signals
Mic to AGENs
Mic from Term Blk
SPKR+/- to Term Blk
~MRESET
Diode-OR
and Fuse
1_TGEN+/-
2_TGEN+/-
Gain
Amplifier
Analog
Buffers
Buffers
~RESET
12-Bit SPI
A/D
Converter
14-Bit
Parallel D/A
Converter
Headphone
Transformer
Microphone
Transformer
SPKR+/- from Monitors
WDOG
Figure 2-18 Test Generator CCA Block Diagram
2.3.2.15.2 Test Generator CCA Detailed Circuit Theory
Refer to
Figure 11-16
. System1 and System2 +48VDC supplies from connector P2 are diode-OR’d by diodes CR3
and CR4 and fused by F1 before routing to the U10 DC-DC converter. The U10 DC-DC converter, diode CR6,
inductor L3, and capacitor C32 create +5VDC, which is measurable on test point TP11.
inductor L3, and capacitor C32 create +5VDC, which is measurable on test point TP11.