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RS-232 Control of the Yaesu FRG-9600
Interface Unit: FIF-232C (converts 5V TTL to RS-232 polar)
Standard Connections Used: TXD, RXD, GND
Flow Control: None (for the equipment featured here)
Type of RS-232 Command Set: Binary, 5-byte fixed length frames (1-byte opcode + 4bytes of data/parameters)
Data Parameters: 4800 bps (fixed), 1 start, 8 data + 2 stop bits
FRG-9600 Interface
The FRG-9600 supports only frequency and mode set commands (no s-meter read).
The format of command data (sent left to right) is as follows:
|
1 |
2 |
3 |
4 |
5 |
| Opcode | 1st Arg | 2nd Arg | 3rd Arg | 4th Arg |
| Function | Opcode (hex) |
Arg1 | Arg2 | Arg3 | Arg4 | Argument description | ||||||||||||||
| Set Operating Frequency |
0ah | f1 | f2 | f3 | f4 | New operating frequency in BCD
format Example: To set 145.250MHz the values of f1-f4 are:
(note: lsb of f4 (for 10's Hz) is ignored) |
||||||||||||||
| Mode | op | - | - | - | - | Select mode as follows:
|
Note: the mode command does not use parameters, instead the opcode value itself is used
This document maintained by
simon.collings@cableinet.co.uk.
Material
Copyright © 2000 Simon Collings