Contemporary Research 232-STA Manual download pdf (Page 15)

Contemporary Research 15 232-STSi PAL TV Tuner

RS-232 Control

Preset Commands and Replies

Request Presets

Asks for reply with list of presets stored in memory

Example:

„>$R‟ asks for list from Unit 1

Reply: „

<1$TR2-31,35,52,126

„

$G=xxx

Preset Information

Returns preset number, freq, standard, label (1-8 characters)

Number of characters follows same structure as T status response

Example:

„>$G31‟ asks for preset 31 information

Reply: „

<1$TG031,271.25,02,BBC

„

$N=xxx

Request Label

Asks for reply with channel text assigned to specific channel

Example:

„>$N31‟ asks for label assigned to channel 31

Reply:

„

<1$TN031,BBC

„

Terminal Communication Commands

Echo Off

Characters received will not be re-transmitted (power up default).

Echo On

Characters received will be re-transmitted.

Example: „

>EN‟ Characters received will be re-transmitted.

Product ID

Returns the product model number and software version.

Zap

Reconfigures unit for all factory default settings.

RS-232 Command Hints and Tips

Leading zeros may be included or omitted from command parameters.

Example: „

>TC=009‟ Selects channel 9 as A/V output, same as „>TC=9‟.

Multiple commands may be concatenated as single strings up to 120 ASCII characters long.

Example: „

>XXTC=9‟ Selects Mute A/V off, channel 9.

Example: „

>S0=0S4=0‟ Selects CATV mode, no front panel lockout.

Mute A/V Off command is not required in any command; however it may be useful to send Mute A/V Off in case

Mute A/V had been set On from the front panel.

Sending all 3 status request commands to the 232-STSi back-to-back for a full status update is allowed.

Example: „

>STSVSS‟ Returns all 3 response strings back-to-back.

The carriage return line feed at the end of each 232-STSi response allows for easy monitoring of responses with

an ASCII terminal program. You may use ASCII CR, Hex $0D, or keyboard „Enter‟ in programming.

You don‟t have to use the „=‟ character between the command and parameter – the string works either way.

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