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

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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

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Contents Lattice House Baughurst Basingstoke UK RG26 5LP Specialist RF DesignsTel +44 0 118 981 Fax +44 0 118 981 Received Signal Strength Indication Rssi AT S156 Table Of ContentsHandshaking Operation During Transmit and Receive List of Figures List of TablesIntroduction Connections & Indications RS232 ConnectorPin No Function RF Connector Power ConnectorFront Panel Indications Modem Operation IntroductionRS232 Data Handling Data Transfer ModesReceive-to-Transmit Turnround Description Time msMAX Command Mode List of CommandsOkcrlf Command Syntax ErrorcrlfBaud Rate AT B0 Parity ATB1Format Mode AT F AT F?CRLFOK Crlf Engineering Test Modes ATRXX, Dxxxcrlf ATI9CRLF Command Mode Guard Time AT S154Software Version Information AT Centre Radio Frequency AT S155Rssi Level Level at RF Input dBm ±2dB Radio Channel AT S157 Data Quality AT S158Squelch AT S159 Squelch Level Level at RF InputPower Level Output Power DBm Tolerance Nominal Transmission Power AT S160Output Power for 1W G-MAX Output Power for 2W G-MAX Level NominalChannel Step Size AT S161 Test Message Period AT S162Over-Air Symbol Rate AT S163 Note engineering function only Preamble Period AT S165 Note engineering function onlyInvert Symbol AT S167 Frame Synch Tolerance AT S166 Note engineering function onlySquelch Delay AT S168 Save parameters AT &W Restore defaults AT &Y8Radio Frequency AT &F AT &WCRLFDisplay parameters ATT? ATT?CRLFDo not enter unless you wish to carry out a code load Ppppppppppppppppppppppppppppppppppppppppppppppppppppp Hardware Specification RS232 Port ParametersRadio Specifications Parameter Max SXn50Mechanical Specification EnclosuresFront View of Casting Type Approvals Vibration SpecificationsOperating conditions EMC