Altinex manual INSTALLING YOUR MT108-103, Operation, Multitasker, 7.1 RS-232CONTROL

MULTITASKER

INSTALLING YOUR MT108-103 6

Step 1. Turn off power to the MultiTasker system and disconnect from AC power.

Step 2. Remove a slot cover (MT200-101) from one of the unused slots. Identify the slot number and note that it is for RS-232 control.

Step 3. Slide the MT108-103into an available slot in the MultiTasker enclosure in order to connect to the bus. Make sure that the MT108-103fits into place. Secure the card to the MultiTasker by tightening the retainer screws located on the top and bottom of the card.

Step 4. Connect an audio cable from the audio source to the input connector of the MT108-103. Connect any or all of the four available outputs of the MT108-103to audio equipment.

Step 5. Restore power to the MultiTasker system.

Step 6. The LED on the card panel will turn red indicating that the card is in full operation. A green LED indicates that an input signal is present.

Step 7. The MT108-103is now operational as a distribution amplifier. The outputs can be controlled using a controller sending RS-232 commands, or using front panel keys.

OPERATION 7

7.1 RS-232 CONTROL

The MT108-103has many advanced remote-control capabilities accessible through standard RS-232 communication. Control may be accomplished through a computer, control system, or any device capable of RS-232 communication.

7.1.1 RS-232 INTERFACE

The control commands for the MT108-103, are in a simple ASCII character format.

1.Square brackets “[ ]” are part of the command.

2.Use uppercase letters for all commands.

3.Spaces are not legal characters.

The cards in a MultiTasker are capable of performing various functions, as well as providing feedback to the user or control system. Commands instruct a card to perform specific actions or request information from the card. Some commands do both simultaneously.

A command that instructs the card only to perform an action will generate feedback of “[ ]”. The open bracket immediately followed by a closed bracket indicates the card received a valid command. If the command requested information from the card, the feedback generated by the card is the acknowledgement of having received a valid command. Invalid commands generate feedback that includes “ERR” plus an error code.

Example 1:	[ERR001]	Error number
Example 2:	[ERRC04]	Card error C4

After processing a command, an “OK” or error will be returned as feedback if “F” is included at the end of a command string.

Commands ending in “S” will be saved into memory. Commands not ending in “S” will still be executed, but will not be restored when the system is reset or powered off, then on.

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