Jenn-Air 1300 Frame Synch Tolerance AT S166 Note engineering function only, Invert Symbol AT S167

4.19Frame Synch Tolerance (AT S166) Note: engineering function only.

This command controls a receive function within the FX929 modem IC within the modem.. The command format is as follows:

	AT S166=n<CR><LF>
Where:	n = 0	0 mismatches allowed in frame synch.
		pattern
	n = 1	2 mismatches allowed in frame synch.
		pattern
	n = 2	4 mismatches allowed in frame synch.
		pattern
	n = 3	6 mismatches allowed in frame synch.
		pattern
Default:	n = 0	0 mismatches allowed in frame synch.
		pattern
Read	AT S166?<CR><LF>
Read Return:	n<CR><LF>
Example:	AT S166=2<CR><LF> sets 4 mismatches allowed

4.20Invert Symbol (AT S167)

Note: engineering function only.

This command controls the polarity of the transmit and receive audio between the FX929 modem IC and the transceiver and allows for different transceivers to be used with the modem. The command format is as follows:

	AT S167=n<CR><LF>
Where:	n = 0	RX non-inverted and TX non-inverted
	n = 1	RX non-inverted and TX inverted
	n = 2	RX inverted and TX non-inverted
	n = 3	RX inverted and TX inverted
Default:	n = 0	RX non-inverted and TX non-inverted
Read	AT S167?<CR><LF>
Read Return:	n<CR><LF>
Example:	AT S167=1<CR><LF> RX non-inverted and TX
		inverted

Hermes Operator Note Page 22 of 32