Jenn-Air 1300 - Manual (Page 13)

Hermes Operator Note Page 13 of 32
4.5 Format Mode (AT F)
This command turns the Forward Error Correction (FEC) mode on and off.
The over-air format allows for higher speed operation, but with reduced Bit
Error Rate (BER) performance with the FEC turned off, or lower speed,
improved BER with the FEC turned on.
Figure 1 and the associated table give the timing information for both modes
of operation.
The command is:
Format mode AT F=n<CR><LF>
Where n=0 mode with FEC
n=1 high speed mode without FEC
Default: n=1 (non-FEC mode)
Read: AT F?<CR><LF>
Read Return: n<CR><LF>
Example: AT F=1<CR><LF>