Jenn-Air 1300, 1892 manual Power Connector, RF Connector, Front Panel Indications

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2.2Power Connector

The power and ancillary connections are made via a 9 way D male connector. The power supply input is fully isolated from the chassis of the module.

Note: The power supply cannot be used as an RS232 input line.


Pin No.	Function
1	RSSI Received Signal Strength Output
	Analogue output proportional to the level of the RF input
	Level at -110dBm input = ~0.6V and at -60dBm = ~2.1V

2	n/c

3, 4	+ve Supply Input (9 - 36VDC)
	Receive current <100mA at 24VDC input
	Transmit current <400mA at 1000mW RF output, 24VDC input
	(reverse voltage protection with re-settable "polyfuse")

5	Power Supply Ground (isolated from enclosure)

6	I2C Bus Clock (engineering use only)
7	0V (chassis of enclosure)

8	I2C Bus Data (engineering use only)
9	Power Supply Ground (isolated from enclosure)
	Table 2 Power Connections

2.3RF Connector

The RF connection to the modem is a female TNC bulkhead connector.

2.4Front Panel Indications

There are 3 LED indicators which show the operation of the unit as follows:

P	Green	Power	On when DC supply input present and DTR input
			is high (> 3V)
S	Orange	Status	Flashes orange when the transceiver is switched
			to transmit or receive. Continuous orange if the
			transceiver goes “Out Of Lock” (OOL) which
			happens on failure, or when an invalid frequency
			is programmed into it.
T	Red TX		On when the transmitter is turned on.

These LEDs are next to the connectors on both types of enclosure.

Hermes Operator Note

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Contents Specialist RF Designs Lattice House Baughurst Basingstoke UK RG26 5LPTel +44 0 118 981 Fax +44 0 118 981 Table Of Contents Received Signal Strength Indication Rssi AT S156Handshaking Operation During Transmit and Receive List of Figures List of TablesIntroduction RS232 Connector Connections & IndicationsPin No Function Power Connector RF ConnectorFront Panel Indications Modem Operation IntroductionData Transfer Modes RS232 Data HandlingReceive-to-Transmit Turnround Time ms DescriptionMAX List of Commands Command ModeOkcrlf Command Syntax ErrorcrlfBaud Rate AT B0 Parity ATB1Format Mode AT F AT F?CRLFEngineering Test Modes AT OK CrlfRXX, 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