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
11-1
Troubleshooting
Waveforms 11
Introduction to
This Section
This section contains images of waveforms which may be useful in
verifying operation of certain parts of the circuitry. These waveforms
are for reference only; the actual data depicted will vary depending
upon operating conditions.
Waveforms
103 Acquisitions
Tek stopped:
T
1
Ch1
T
M 200us Ch1 -680mV
W1: Switched Regulator Clock Out
Trace 1 - (U709)LX measured with radio in
standby mode with UNSW_B+ at 7.5VDC.
2.00V
MAEPF-26008-O
Waveform W1