Technical Manual
Table Of Contents
- 1. Introduction
- 2. Hardware
- 3. The A431 Radio Module
- 3.1. About the A431 Radio Module
- 3.2. Functional description
- 3.3. Manufacturing Issues
- 3.3.1. Marking and labeling issues
- 3.3.2. Alignment Range and Switching Range
- 3.3.3. Tuning Procedure
- 3.3.4. Setting Up the Default Parameters
- 3.3.5. Definitions
- 3.3.6. Test Equipment Settings
- 3.3.7. Trimming Elements
- 3.3.8. Adjusting the Receiver Front End
- 3.3.9. Adjusting the VCOs
- 3.3.10. Adjusting the Crystal Reference
- 3.3.11. Checking the Receiver Parameters
- 3.3.12. Checking the Transmitter Parameters
- 3.3.13. Data Transfer Check
- 3.4. PCB Parts Placement
- 3.6. Frequency Reference Specifications
- 3.7. A431 Module’s Photographs
- 4. Software
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Manufacturing Issues ________________________________________________________ 28
Marking and labeling issues ____________________________________________________________ 28
Alignment Range and Switching Range __________________________________________________ 28
Tuning Procedure _____________________________________________________________________ 29
Setting Up the Default Parameters ______________________________________________________ 29
Commands valid for all bands ____________________________________________________ 30
Commands required for band 1 __________________________________________________ 30
Commands required for band 2 __________________________________________________ 30
Commands required for band 3 __________________________________________________ 30
Commands required for band 4 __________________________________________________ 30
Definitions ___________________________________________________________________________ 31
Test Equipment Settings _______________________________________________________________ 32
Network Analyzer (HP 8712 or equivalent)_____________________________________________ 32
Service Monitor (Rohde & Schwarz CMS50 or equivalent) _______________________________ 32
Trimming Elements____________________________________________________________________ 33
Adjusting the Receiver Front End _______________________________________________________ 33
Adjusting the VCOs ___________________________________________________________________ 34
Adjusting the Crystal Reference _________________________________________________________ 35
Checking the Receiver Parameters ______________________________________________________ 35
Checking the Transmitter Parameters ____________________________________________________ 35
Data Transfer Check ___________________________________________________________________ 36
PCB Parts Placement_________________________________________________________ 37
Bill of Materials (A431) _______________________________________________________ 38
Frequency Reference Specifications ___________________________________________ 42
A431 Module’s Photographs _________________________________________________ 43
Software ______________________________________________________45
Short Description____________________________________________________________ 45
Tasks _______________________________________________________________________ 45
Controlling the Unit__________________________________________________________ 47
Serial Communication Protocol _________________________________________________________ 47
General Format of a Command _________________________________________________________ 47
General Format of an Answer___________________________________________________________ 48
Commands___________________________________________________________________________ 48
CMDS _____________________________________________________ 48
TIME _____________________________________________________ 49
BL ____________________________________________________________________________ 49
FREQ _________________________________________________________________________ 49
DATA _________________________________________________________________________ 50
IMME _________________________________________________________________________ 52