Sets the standby frequency of an instrument. ADF does not have a standby frequency. However, if it
is set here, its active frequency will be updated instead.
Request
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|
| ID | 21 | I | X | X | X | Y | Y | Y | | | | | | | | | | | | | | | | | | | | | | | |
Request Structure
| Byte | Value | Size | Type | Description | COMM / NAV | ADF |
|---|
| 0 | ID | 1 | BIN | RNS address (ID) | | |
| 1 | 21 | 1 | BIN | Set Standby Frequency instr. code | | |
| 2 | I | 1 | BIN | 0-NAV, 1-COMM, 2-ADF | | |
| 3 | X | 1 | BIN | 1st digit | 1st integer | 1st integer |
| 4 | X | 1 | BIN | 2nd digit | 2nd integer | 2nd integer |
| 5 | X | 1 | BIN | 3rd digit | 3rd integer | 3rd integer |
| 6 | Y | 1 | BIN | 4th digit | 1st decimal | 4th integer |
| 7 | Y | 1 | BIN | 5th digit | 2nd decimal | |
| 8 | Y | 1 | BIN | 6th digit | 3rd decimal | |
Response
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|
| ID | 21 | V | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Response Structure
| Byte | Value | Size | Type | Description |
|---|
| 0 | ID | 1 | BIN | RNS address (ID) |
| 1 | 21 | 1 | BIN | Set Standby Frequency instruction code |
| 2 | V | 1 | BIN | 1 for successful, 0 otherwise |
Factory Default Values
| Instrument | Frequency | Minimum | Maximum |
|---|
| NAV | 108.000 | 0.000 | 999.999 |
| COMM | 118.000 | 0.000 | 999.999 |
| ADF | 0000 | 0000 | 9999 |
Examples
Setting NAV Standby Frequency to 111.400:
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|---|
| ID | 21 | 0 | 1 | 1 | 1 | 4 | 0 | 0 | | | | | | | | | | | | | | | | | | | | | | | |
Setting COMM Standby Frequency to 118.250:
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|
| ID | 21 | 1 | 1 | 1 | 8 | 2 | 5 | 0 | | | | | | | | | | | | | | | | | | | | | | | |
Setting ADF to 0357:
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|
| ID | 21 | 2 | 0 | 3 | 5 | 7 | 0 | 0 | | | | | | | | | | | | | | | | | | | | | | | |