User's 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
- 3.6. Frequency Reference Specifications
- 3.7. A431 Module’s Photographs
- 4. Software
55
Commands
• days_uptime in days; together with hr:min_uptime, it represents the
amount of time the device is up without a reset or watchdog
• hr:min_uptime in hours:minutes format
• rssi as decimal (unsigned chars); it is the programmed value with the RSSI
command
• pmp_low and pmp_high are the programmed values with the PMP com-
mand
• type is used to represent the device type; following types are assigned cur-
rently:
— 0 for A730MD
— 1 for A720
— 2 for A730SD
— 3 for A720B
— 4 for A733
— 5 for A723
— 6 for A440
• slot and samples are the actual values programmed by means of the SLOT
command
• err_level is the error value; 0 means no error
REMARKS GET only.
REMOTE Yes, GET only. The A440 can issue the command both remotely and locally.
EXAMPLE
INFO
193 INFO 255 0 18/4/1999 21:5:11 1.3 0 0 0 91 72 40 1:46 58 65 72 3 900 15 0
#
RX
DESCRIPTION Switches the unit to permanent receive mode (for tuning purposes).
PARAMETERS None.
RETURNS Nothing.
REMARKS The system stops, and exits the command only when a key is pressed. This com-
mand returns no message.
REMOTE No.
EXAMPLE
RX
193 RX 0
#
TX
DESCRIPTION Switches the unit to transmit mode (for tuning purposes).