Western Telematic CAS-161A manual Installation, Configure SetUp Switches, SetUp Switch Bank

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3.Installation

3.1. Configure SetUp Switches

There are two banks of DIP switches located on the bottom of the CAS-161A unit. These switches are used to configure the Prefix Code (command character), enable the Broadcast Mode, and select the baud rate. Switch functions are summarized on the bottom of the unit and in the sections that follow:

Note: Switch positions “1” and “0” are indicated on the bottom of the unit.

3.1.1. SetUp Switch Bank 1

The bank of switches locat d cl s st to the rear panel are used to select the Prefix Code Repetition Value, Broadcast Mode, and baud rate.

3.1.1.1.Prefix Code Repetition Value (Sw1 - Sw4)

The Prefix Code informs the unit that the next character will be a command. In order to allow the unit to adapt to a variety of applications, it is often useful to require that the Prefix Code be repeated several times in order to be recognized. For example if the Prefix Code is ^V and the Repetition Value is 4, then the sequence “^V^V^V^V” would be sent prior to a port selection command.

Note: When tran mitting binary data, it is recommended that the Repetition Value be set at four or eight. This will decrease the possibility of random characters in data being misinterpr ted as commands.

Prefix8421xPrefixCodeCode Repetition*

Switch (Bank )

 

10021

310

401

 

 

 

 

*= Factory Setting

3.1.1.2.Broadcast Mode (Sw5)

On (1) forces all ports open. Data from the Control (MODEM) port is sent to all Input ports. Useful for broadcasting to or controlling all Input devices. When enabled, concurrent data sent by Input ports to the Control port will be jumbled together.

BroadcastEnableDisable*Mode

Sw510

* = Factory Setting

3-1

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Contents CAS-161A User’s GuideTable of Contents Introduction Typographic ConventionsFront Panel Indicators 1UnitInstrumentDescriptionFrontPanel2InstrumentBackPanel Back Panel ComponentsInstallation Configure SetUp SwitchesSetUp Switch Bank 611107080 SetUpTX Switch Bank Prefix Code Sw1 Sw7Connect Power Cable Connect Data CablesPort Selection Selecting a PortClosing/Opening All Ports ExamplesFigureA. AInterface.1RS232InterfaceDescription RS232 Ports StandardPrintable Prefix Codes Installing Add-On Modules Apx-317493348Ports-32n64OnOffO1 2 3ffnO4nff Specifications Customer Service How to Identify and Resolve Radio-TV Interference Problems FCC StatementTrademark and Copyright Information