RO (Packetization Timeout)

This command applies to the XTC RF Module.

Set or read the number of character times of inter-character silence required before transmission begins. For information on how RO works with the RB command, see RB (Packetization Threshold).

When RO is the transmission-beginning criteria:

The actual time between the reception of the last character from the UART and the beginning of RF transmission is at least 800 µsec longer than the actual RO time to allow for transmission setup. It is also subject to 100-200 µsec of additional uncertainty, which could be significant for small values of RO at high UART bit rates.

The firmware calculates the correct UART character time (10, 11, or 12 bits) based on the following criteria:

• 1 start bit
• 8 data bits
• 0 or 1 parity bit (as determined by the NB command)
• 1 or 2 stop bits (as determined by SB command)

Binary command

0x21 (33 decimal)

Parameter range

0 - 0x53E2 [x UART character times]

Default

3

Bytes returned

2