Jenn-Air 1892, 1300 manual Connections & Indications, RS232 Connector, Pin No Function

Page 5

2CONNECTIONS & INDICATIONS

2.1RS232 Connector

The RS232 connections are made via a 9 way D female with the following connections:

 

 

 

 

 

 

 

Pin No.

Function

 

 

 

 

1

CD Output

 

 

 

 

 

Set (+ve) when a RF signal above a certain level is present at the

 

 

RF connector. The threshold is programmable over 10 levels that

 

 

are defined in section 5.13

 

 

 

 

 

 

 

 

 

 

2

RXD

RS232 data level data output

 

 

 

 

 

 

 

 

 

3

TXD

RS232 level data input

 

 

 

 

 

 

 

 

 

 

4

DTR

RS232 level input

 

 

 

 

 

When set (+ve) by the DTE (host processor) the modem and

 

 

transceiver is turned on. The max/min levels are:

 

 

 

DTR Vin Min.

(off state)

=

-15V

 

 

 

DTR Vin Max.

(off state)

=

+2.5V

 

 

 

DTR Vin Min

(on state)

=

+5V

 

 

 

DTR Vin Max

(on state)

=

+15V

 

 

 

DTR Iin Max(on state) =

4mA

 

 

 

 

 

 

 

 

5

Signal Ground

 

 

 

 

 

 

 

 

 

 

6

DSR

RS232 level output

 

 

 

 

Set (+ve) after power is applied to the modem or when the DTE

 

 

(host processor) sets DTR +ve. The output is active when the

 

 

modem is ready to receive data. The time taken for the output to

 

 

become active is <50ms from when DSR or power is applied to

 

 

the modem.

 

 

 

 

 

 

 

 

 

 

 

7

RTS

RS232 level input

 

 

 

 

 

The RTS input must be set (+ve) for both data and configuration.

 

 

Data is ignored when RTS is clear (-ve).

 

 

 

 

 

 

 

 

 

8

CTS

RS232 level output

 

 

 

 

Set (+ve) if the transmit RS232 data into the modem can be

 

 

accepted and the RTS input is set, it is cleared (-ve) otherwise.

 

 

Clearing of this signal indicates that the input transmit buffer is

 

 

nearly full .The RS232 data must be stopped within 10 bytes of

 

 

this signal being cleared. After this point the data is ignored. The

 

 

CTS signal is set again if there is room for more than 10 bytes.

 

 

 

 

 

 

 

 

9

n/c

 

 

 

 

 

 

 

Table 1 Data Connections

 

 

 

Hermes Operator Note

Page 5 of 32

Page 4 Page 6
Image 5
Page 4 Page 6
Contents Tel +44 0 118 981 Fax +44 0 118 981 Specialist RF DesignsLattice House Baughurst Basingstoke UK RG26 5LP Handshaking Operation During Transmit and Receive Table Of ContentsReceived Signal Strength Indication Rssi AT S156 List of Tables List of FiguresIntroduction Pin No Function RS232 ConnectorConnections & Indications Front Panel Indications Power ConnectorRF Connector Introduction Modem OperationReceive-to-Transmit Turnround Data Transfer ModesRS232 Data Handling MAX Time msDescription Okcrlf List of CommandsCommand Mode Errorcrlf Command SyntaxParity ATB1 Baud Rate AT B0AT F?CRLF Format Mode AT FRXX, Dxxxcrlf Engineering Test Modes ATOK Crlf Software Version Information AT Command Mode Guard Time AT S154ATI9CRLF Centre Radio Frequency AT S155Rssi Level Level at RF Input dBm ±2dB Data Quality AT S158 Radio Channel AT S157Squelch Level Level at RF Input Squelch AT S159Output Power for 1W G-MAX Output Power for 2W G-MAX Transmission Power AT S160Power Level Output Power DBm Tolerance Nominal Level NominalTest Message Period AT S162 Channel Step Size AT S161Preamble Period AT S165 Note engineering function only Over-Air Symbol Rate AT S163 Note engineering function onlyFrame Synch Tolerance AT S166 Note engineering function only Invert Symbol AT S167Squelch Delay AT S168 Radio Frequency AT &F Restore defaults AT &Y8Save parameters AT &W AT &WCRLFATT?CRLF Display parameters ATT?Do not enter unless you wish to carry out a code load Ppppppppppppppppppppppppppppppppppppppppppppppppppppp RS232 Port Parameters Hardware SpecificationParameter Max SXn50 Radio SpecificationsEnclosures Mechanical SpecificationFront View of Casting Operating conditions Vibration SpecificationsType Approvals EMC
Top Page Image Contents