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MULTITASKER™
400-0095-005
9
9
INSTALLING YOUR MT109-100 6
Step 1. Determine how the MT109-100 is going to
be configured. A standard MT109-100 is
an 8-In, 1-Out switcher, but two
MT109-100s (one Master and one
Expansion) may be configured as a
15-In, 1-Out switcher.
In Application Diagram, DIAGRAM 4, on
page 8, the Master is set to accept 7
external inputs and 1 internal input. The
Expansion card has 8 external inputs
(inputs 8-15). For RS-232 commands, the
8 external inputs of the Expansion card
must still be configured as inputs 1-8.
For example, if the Master is in slot 1 and
the Expansion card is in slot 2, select
inputs using the following commands:
To select input 1: [ON1C1]
2: [ON2C1]
...
7: [ON7C1]
To select input 8: [ON8C1] [ON1C2]
9: [ON8C1] [ON2C2]
...
15: [ON8C1] [ON8C2]
Step 2. Turn off power to the MultiTasker system
and disconnect from AC power.
Step 3. Remove a slot cover (MT200-101) from
an unused slot. Identify the slot number
and note that it is for RS-232 control.
Step 4. Slide the MT109-100 into an available slot
in the MultiTasker in order to connect to
the bus. Make sure that the MT109-100
fits into place and then secure the card by
tightening the retainer screws located on
the top and bottom of the card.
Step 5. Restore power to the MultiTasker system.
Step 6. The LED on the card panel will turn red
indicating the card is operational. An LED
that is blinking red indicates a problem. If
the LED is blinking, see the
Troubleshooting Guide in section 8.
Step 7. Connect the audio sources to the input
connectors of the MT109-100. Connect
the output of the MT109-100 to the
receiving device.
Step 8. The MT109-100 is now operational.
OPERATION 7
7.1 RS-232 CONTROL
The MT109-100 has many advanced
remote-control capabilities accessible through
standard RS-232 communication. Control may be
accomplished through a computer control system
or any other device capable of sending RS-232
communication.
7.1.1 RS-232 INTERFACE
The control commands for the MT109-100 are
in a simple ASCII character format.
1. Square brackets “[ ]” are part of the
command.
2. Use uppercase letters for all commands.
The cards in a MultiTasker system are capable
of performing various functions, as well as
providing feedback to the user or control
system. Commands instruct a card to perform
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
close 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 of “[ERR001]”.
After processing a command, an “OK” or
[ERR001] 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.