Technical Manual
Table Of Contents
- Vocoder and Controller Boards Detailed Theory of Operation
- Introduction to This Section
- General
- Vocoder Board
- Controller Board
- Switching Regulator
- RX Signal Path
- TX Signal Path
- Controller Bootstrap and Asynchronous Buses
- Vocoder Bootstrap
- SPI Bus Interface
- Universal Connector and Option Selects
- Keypad and Display Module
- Controls and Control Top Flex
- Controller Memory Map
- Vocoder Memory Map
- MCU System Clock
- DSP System Clock
- Radio Power-Up/ Power-Down Sequence
- Notes
- Secure Modules
- Disassembly/Reassembly Procedures
- Troubleshooting Procedures
- Troubleshooting Charts
- Troubleshooting Waveforms
- Troubleshooting Diagrams
11-3
ABA
C
JP
PR
ILLUSTRATOR
DESCRIPTIO
LETTERING SI
Z
REQUIRES:
EDITOR
T
13 Acquisitions
Tek stopped:
T
1
Ch1
M 10.0us Ch1 2.2 V
W4: ABACUS programming
captured during mode change.
Trace 1 - (ADSIC) SBI
MAEPF-24379-O
Ch1 Freq
74.610kHz
2.00V
Waveform W4
Waveform W2
34513 Acquisitions
Tek stopped:
T
3
Ch3
1
2
Ch1 Ch2
M 5.00us Ch1 2.2 V
Note 2: Since these signals are a differential
current loop these voltages are very low.
MAEPF-24380-O
2
W5: ABACUS/ADSIC Interface.
Receiving 1KHz tone @ 3KHz deviation,
-60dbm.
Trace 1 -IDC (2.4MHz)
Trace 2 - DOUT
TRACE 3 - DOUT*
Ch1 Freq
2.251920 MHz
Low resolution
2.00V
500mV
500mV
T
ASTRO SABER
ABACUS/ADSIC I
n
JP 2/7/94
PR
ILLUSTRATOR ENGINE
E
DATE
DESCRIPTION
LETTERING SIZE:
REQUIRES:
EDITOR CHECK
E
DATE
Waveform W5