Multi-Tasker MT109-100 User manual

MULTI-TASKER™
MANUAL PART NUMBER: 400-0095-004
MT109-100
8-IN, 1-OUT STEREO AUDIO SWITCHER
CARD FOR MULTI-TASKER™
USER’S GUIDE

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TABLE OF CONTENTS
Page
PRECAUTIONS / SAFETY WARNINGS.............. 2
GENERAL......................................................... 2
CLEANING........................................................ 2
FCC / CE NOTICE............................................. 2
ABOUT YOUR MT109-100..................................3
TECHNICAL SPECIFICATIONS ......................... 3
DESCRIPTION OF MT109-100 ........................... 4
APPLICATION DIAGRAM.................................... 5
DIAGRAM 1: TYPICAL CONFIGURATION........ 5
DIAGRAM 2: INTERNAL VIEW......................... 6
DIAGRAM 3: JUMPER SETTINGS.................... 7
DIAGRAM 4: 15 IN, 1 OUT SWITCHER............ 8
INSTALLING YOUR MT109-100.......................... 9
OPERATION........................................................ 9
RS-232 CONTROL............................................ 9
DESCRIPTION OF COMMANDS.................... 10
MENU MODE.................................................. 17
TROUBLESHOOTING GUIDE........................... 21
LED IS NOT LIT .............................................. 21
LED IS BLINKING RED...................................22
NO SOUND..................................................... 22
SOUND DISTORTION..................................... 22
SOUND LEVEL IS LOW..................................22
ALTINEX POLICY.............................................. 23
LIMITED WARRANTY/RETURN POLICY....... 23
CONTACT INFORMATION.............................. 23

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PRECAUTIONS / SAFETY WARNINGS 1
Please read this manual carefully before using
your MT109-100. Keep this manual handy for
future reference. These safety instructions are to
ensure the long life of your MT109-100 and to
prevent fire and shock hazard. Please read them
carefully and heed all warnings.
1.1 GENERAL
•Qualified ALTINEX service personnel, or their
authorized representatives must perform all
service.
•To prevent fire or shock, do not expose this unit
to rain or moisture. Do not place the MT109-100
in direct sunlight, near heaters or heat radiating
appliances, or near any liquid. Exposure to
direct sunlight, smoke, or steam can harm
internal components.
•Handle the MT109-100 carefully. Dropping or
jarring can damage the card.
•Do not pull the cables that are attached to the
MT109-100.
•Insert the card carefully into the slots of the
Multi-Tasker™ without bending any edges.
•When removing a card, pull it halfway through
to avoid damage to internal cables. If an
expansion card is being removed, please make
sure that the Main card to which it is attached is
also pulled out simultaneously.
1.3 CLEANING
•Clean only the connector area with a dry cloth.
Never use strong detergents or solvents, such
as alcohol or thinner. Do not use a wet cloth or
water to clean the card. Do not clean or touch
any component or PCB.
1.4 FCC / CE NOTICE
•This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) This device may not cause
harmful interference, and (2) this device must
accept any interference received, including
interference that may cause undesired
operation.
•This equipment has been tested and found to
comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable
protection against harmful interference when
the equipment is operated in a commercial
environment. This equipment generates, uses,
and can radiate radio frequency energy and, if
not installed and used in accordance with the
instruction manual, may cause harmful
interference to radio communications. Operation
of this equipment in a residential area is likely to
cause harmful interference in which case the
user will be required to correct the interference
at his own expense.
•Any changes or modifications to the unit not
expressly approved by ALTINEX, Inc. could void
the user’s authority to operate the equipment.

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ABOUT YOUR MT109-100 2
MT109-100
8-in 1-out Stereo Audio Switcher Card
The MT109-100 is a Stereo Audio Switcher Card
designed for use with the MultiTasker™. When
installed in the Basic Enclosure (MT100-100), this
card allows the connection of six stereo audio
sources to a single receiving device, such as a
cassette recorder, mixer, and/or amplifier for sound
reinforcement.
Inputs are selected via easy-to-use ASCII
commands from a control system or computer
connected to the RS-232 port of the MultiTasker™
Basic Enclosure. While the MT109-100 can accept
only unbalanced audio inputs, the output can be
wired for either balanced or unbalanced audio.
The MT109-100 is primarily designed to utilize the
inputs and output offered on the connector panel.
However, it also offers a "hidden" feature that
enables access to the MultiTasker signal bus. The
signal bus spans the width of the MultiTasker
Basic Enclosure along the back plane of the unit.
Through RS-232 control, the MT109-100 can send
or receive stereo audio signals to or from this bus,
from any of the applicable cards in the enclosure.
This feature can be used in a variety of ways to
expand the capabilities of the card. For example,
two MT109-100 cards can be installed in the
MultiTasker and the output of one can be routed to
an input of the other, creating a 15-input 1-output
switcher. Note that the signal bus handles only one
stereo audio signal path at a time.
TECHNICAL SPECIFICATIONS 3
FEATURES/DESCRIPTION MT109-100
GENERAL
Inputs
Input Connectors (8) 3.5mm stereo
audio jack
Outputs
Local Monitor Output
Connector (1) 5-pin Terminal Block
Compatibility Stereo or Mono Audio
Table 1. MT109-100 General
MECHANICAL MT109-100
Basic Enclosure Slots
Required One
Weight 1.0 lb (0.45 kg)
Connector Panel Black
T° Operating 10°C-40°C
T° Maximum 0 to 50°C
Humidity 90% non-condensing
MTBF (calc.) 55,000 hrs
Table 2. MT109-100 Mechanical
ELECTRICAL MT109-100
Input Signals
Max Level 0 dBu
Impedance 10k Ohms
Audio Throughput
Gain 0 dB unbalanced,
6dB balanced
Frequency Response 10 Hz to 20 kHz
(+/- 0.05 dB)
Noise Floor -100 dB @ 20 kHz
CMRR >80 dB, 10 Hz to 20 kHz
Output Signals
Level 1V p-p
Impedance Low – drives 600 Ohms
Gain 0 dB
Power
Power from
MT100-100 +6V -6V +13V -13V Power Consumption
MT109-100 20
mA 20 mA 25 mA 22 mA 0.85 watts
Table 3. MT109-100 Electrical

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DESCRIPTION OF MT109-100 4

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APPLICATION DIAGRAM 5
DIAGRAM 1: TYPICAL CONFIGURATION
MT109-100

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DIAGRAM 2: INTERNAL VIEW
AUDIO
INPUT 7
INPUT 8
EXP 2 EXP 4
INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 5
INPUT 6
EXP 1 EXP 3
POWER
+
-OUT

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DIAGRAM 3: JUMPER SETTINGS
The MT109-100 has 8 external inputs with 1 internal input and 1 output. The internal input is from the
Expansion card through a 10-pin ribbon cable, which is connected between P12 of the Expansion card
and P12 of the Master card. The 4 external inputs are configured as inputs 1 thru 8.
The 1 internal input is configured as input 7 or input 8. Only one of two internal inputs is used at a time
and it depends on how the jumpers on the Expansion are set.
Setting Jumpers:
1) As an Expansion card: set P13 as port 7 (L1E and R1E) or port 8 (L2E and R2E)
2) As a Master card: set jumpers on P23 and P24 as described below.
If the Expansion card's jumpers on P13 are set on L1E and R1E, the Master card must select internal
input 7 on P23 (L1E) and P24 (R1E).
If the Expansion card's jumpers on P13 are set on L2E and R2E, the Master card must select internal
input 8 on P23 (L2E) and P24 (R2E).
Note: The MT109-100 configuration is 8-in, 1-out stereo audio switcher. For a 15-in, 1-out switcher
configuration, use two MT109-100 cards. One as a Master card and the other as an Expansion
card. (See page 9.)

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DIAGRAM 4: 15 IN, 1 OUT SWITCHER

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INSTALLING YOUR MT109-100 6
Step 1.Determine how the MT109-100 is going
to be configured.
The MT109-100 is configured as an 8-in
1-out Stereo Audio Switcher. It may be
configured as a system with 15-in, 1-out
using two MT109-100 cards. One card is
configured as a Master card and the
other is configured as an Expansion card.
In Application Diagram, DIAGRAM 4, on
page 8, the Master card is set to accept 7
external inputs, 1 internal input and 1
output. The Expansion card has 8
external inputs (inputs 8 thru15). For
RS-232 commands, the 8 external inputs
of the Expansion card must still be
configured as inputs 1 thru 8.
For example, if the master card is at slot
1 and the Expansion card is at slot 2, to
select inputs 1 thru 4, use the following
commands to select different inputs:
To select input 1: [ON1C1]
2: [ON2C1]
3: [ON3C1]
4: [ON4C1]
5: [ON5C1]
6: [ON6C1]
7: [ON7C1]
To select input 8: [ON8C1] [ON1C2]
9: [ON8C1] [ON2C2]
10: [ON8C1] [ON3C2]
11: [ON8C1] [ON4C2]
12: [ON8C1] [ON5C2]
13: [ON8C1] [ON6C2]
14: [ON8C1] [ON7C2]
15: [ON8C1] [ON8C2]
Step 2. Slide the MT109-100 into an available
slot in the Multi-Tasker™ Basic Enclosure
in order to connect to the bus. Make sure
that the MT109-100 card fits into place.
Secure the card to the Multi-Tasker™ by
tightening the retainer screws located on
the top and bottom of the card.
Step 3. The LED on the card panel will turn red
indicating that the card is in full operation.
A green LED indicates that a signal is
present. An LED that is blinking red
indicates that the card is experiencing a
problem. If the LED is blinking, see
Troubleshooting Guide in section 8.
Step 4. Connect audio cables from the audio
source to the input connector of the
MT109-100. Connect the output
connectors of the MT109-100 to the
audio equipment through an audio cable.
Step 5. Starting from the left, identify the slot
number where the MT109-100 card is
plugged into the Enclosure and note that
it is for RS-232 control.
OPERATION 7
7.1 RS-232 CONTROL
When used in the Multi-Tasker™ Enclosure, the
MT109-100 has many advanced remote control
capabilities, which are accessible through standard
RS-232 communication. The actual controlling can
be accomplished through a computer control
system or any other device capable of sending
RS-232 commands.
7.1.1 RS-232 INTERFACE
The RS-232 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.
After processing a command, an OK or ER 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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7.2 DESCRIPTION OF COMMANDS
Each command consists of three parts:
Function, Card ID, and Unit ID.
[Function , Card ID , Unit ID ]
Example: [VERC3U2]
VER = Function
C3 = Card ID
U2 = Unit ID
For Function, see a detailed explanation under
each command description.
The Card ID is an assigned value. It is equal to
the enclosure slot number in which the card is
installed. The value can range from 1 to 4,
1 to 8, or 1 to 19 depending on the enclosure.
Card ID 0 (C0) is used for the controller. See
the MT100-100 User’s Guide for details.
Changing the position of a card will significantly
affect the commands recorded on software
definitions or third party control systems.
The Unit ID has a value from 0 to 9. Unit ID 0
should be used for single unit operation. If the
Unit ID is set to zero, each command may be
used without Ui. Use the command [SETU0],
as explained in the MT100-100 User’s Guide.
Example:
[VERC3]: For Unit ID Zero
[VERC3Ui]: For Unit ID other than Zero
[VERC3]: Equivalent to [VERC3U0]
1. [VER]
This command displays the software version
and card type for the card.
Command Format: [VERCnUi]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Send the command [VERC2] to check the
version of the MT109-100 in slot 2. The system
will return the following feedback:
MT109-100 690-0179-003
MT109-100 = card type
690-0179-003 = software version
2. [C]
This command receives the status of the card.
Command Format: [CnUi]
Cn = card ID (n = # from 1 to max slots)
Ui = unit id (i = 0 to 9)
Example:
An MT109-100 card is in slot #4. Sending the
command [C4] to the Multi-Tasker™ will yield
feedback similar to the following:
ON 1 C04
OUTVOL=32/32
INVOL1=32/32
INVOL2=32/32
INVOL3=32/32
INVOL4=32/32
INVOL5=32/32
INVOL6=32/32
INVOL7=32/32
INVOL8=32/32
If there is no card in slot #4, sending the [C4]
command will not return any feedback.
3. [CnS]
This command saves the status of the card's
current settings. This configuration will be
restored after system is reset or powered off
then on.
Cn = card number
S = save configuration

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Example:
Save the card's current settings by sending the
command [C4S]. The feedback will indicate the
card settings were saved and display the saved
settings. In the example below, the output
volume is set to 20, the active input is 5 and all
the input volumes are set to 16.
ON 5 C04 Saved
OUTVOL=20/32
INVOL1=16/32
INVOL2=16/32
INVOL3=16/32
INVOL4=16/32
INVOL5=16/32
INVOL6=16/32
INVOL7=16/32
INVOL8=16/32
4. [?]
This command will return general information
about the card and the status.
Command Format: [?CnUi]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = from 0 to 9)
Example:
Send the command [?C5] to receive the
feedback for the MT109-100 in slot #5. Each
status field begins with a '+' and ends with the
card slot number (ex: C05). The feedback will
be similar to the following:
[+MT109-100C05+VR690-0179-003C05
+IN1C05+VO32C05+VI3232323232323232C05
+VM0C05]
MT109-100 = Card Type
VR690-0179-003 = Firmware version
IN1 = Input 1 is the selected input
VO32 = Output volume is at 32
VI3232323232323232 = Input 1-8 volume levels
in two digit format
5. [CLR]
This command clears the card's settings and
returns them to the factory defaults.
Command Format: [CLRCnUi]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = from 0 to 9)
Example:
Send the command [CLRC5] to reset the
MT109-100 in slot #5 to its factory defaults.
6. [STA]
This command enables/disables automatic
feedback from the front panel. The command
affects any card with auto-feedback capability,
not just the MT109-100.
Command Format [STA1] = ON
Command Format [STA0] = OFF
Feedback Prefix Definitions:
+VR = Firmware Version
+IN = Input Selected
+VO = Output Volume
+VI = Input Volume
+VM = Mute Control
Example 1:
Command = [ON1C5]
Feedback = [+IN1C05]
+IN = Input Select
1 = Selected Input
C05 = Card slot number
Example 2:
Command = [VOL1A22C5]
Feedback = [+VO16C05]
+VO = Output Volume
16 = Volume Level
C05 = Card slot number

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7. [SEL] with [ + ] and [ - ]
This command is the volume select command.
It sets the path to adjust the output volume or
the volume level of a specified input and is
used in conjunction with the [ + ] and [ - ]
commands.
Command Format: [SELmCnUi]
m = Input (m # from 0 to 8)
0 = Output volume
1 = Input 1 volume
2 = Input 2 volume
…
8 = Input 8 volume
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
[+] = Increment level by one
[-] = Decrement level by one
Example:
An MT109-100 is in slot #8. Adjust the volume
on Input 2. The current volume level is set to
10. After sending the following commands, a
better volume level of 15 is obtained:
1. [SEL2C8]
The current volume level is 10.
2. [ -] [ -] [ -]
The level is now 7 and is too quiet.
3. [ +] [ +] [ +] [ +] [ +] [ +] [ +] [ +]
The level is now 15 and no further
adjustments are required.
8. [VOL]
This command sets the absolute volume level
for the output volume or an input volume.
Command Format: [VOLmAvCnUi]
m = Input (m # from 0 to 8)
0 = output volume
1 = input 1 volume
…
8 = Input 8 volume
v = Volume Level (# from 01 to 32)
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example 1:
Set the volume level for Input 2, of the card in
slot #8, to a level of 16 using the command
[VOL2A16C8].
Example 2:
Set the output volume level to 16 for the card in
slot #8 using the command [VOL0A16C8] or
[VOLA16C8].
9. [RUP]
This command ramps the output volume to its
maximum level at the rate defined using the
[RAMP] command.
Command Format: [RUPCnUi]
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
Ramp the output volume from a starting level of
10 to the maximum level of 32 for the card in
slot #8. Send the command [RUPC8] and the
system will respond with the following feedback:
[11][12][13][14]…[32]
10. [RUP=xx]
This command ramps the output volume to a
user defined level at a rate defined using the
[RAMP] command.
Command Format: [RUP=xxCnUi]
xx = Stop Level (xx = # from 01-32)
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
Ramp the output volume from a starting level of
1 to a level of 20 for the card in slot #8. Send
the command [RUP=20C8] and the system will
respond with the following feedback:
[02][03][04]…[20]

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11. [RDN]
This command ramps the output volume down
to a level of 1 at a rate defined using the
[RAMP] command.
Command Format: [RDNCnUi]
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
Ramp the output volume from a starting level of
32 down to 1 for the card in slot #8. Send the
command [RDNC8] and the system will respond
with the following feedback:
[31][30][29]…[01]
12. [RDN=xx]
This command ramps the output volume down
to a user defined level at a rate defined using
the [RAMP] command.
Command Format: [RDN=xxCnUi]
xx = Stop Level (xx = # from 01-32)
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
Ramp the output volume from a starting level of
32 down to 16 for the card in slot #8. Send the
command [RDN=16C8] and the system will
respond with the following feedback:
[31][30][29]…[16]
13. [RAMP]
This command displays the ramping time for 32
steps. The time between each step is equal to
the time in seconds divided by 32.
Command Format: [RAMPCnUi]
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
Display the ramp rate setting for the card in slot
#8 by sending the command [RAMPC8]. The
system will respond with feedback similar to the
following:
RAMPTIME = 6 SECONDS
14. [RAMP=x]
This command sets the ramp rate for 32 steps.
The settings range from 4 to 18 seconds, in
two-second intervals.
Command Format: [RAMP=xCnUi]
x = Rate in Seconds
4 = 0.13 seconds/step
6 = 0.19 seconds/step
8 = 0.25 seconds/step
10 = 0.31 seconds/step
12 = 0.38 seconds/step
14 = 0.44 seconds/step
16 = 0.50 seconds/step
18 = 0.56 seconds/step
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
There is an MT109-100 in slot #5. Send the
command [RAMP=16C5] to set the ramp rate to
16 seconds. After this is set, any ramping will
occur at a rate of 32 steps in 10 seconds, or
0.50 seconds per step. Confirm the setting by
sending the command [RAMPC5] and receiving
the feedback:
RAMPTIME = 10 SECONDS
15. [RST]
This command stops ramping and maintains the
last volume setting.
Command Format: [RSTCnUi]
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)

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Example:
The card in slot #8 is ramping from 1 to 32 at a
rate of 32 steps in 18 seconds. Send the
command [RSTC8] and the card will stop
ramping the output volume. The last displayed
volume setting will remain the current volume
level.
16. [MUT0]
This command turns ON the output volume
without changing the input port selected and
without changing any volume settings.
Command Format: [MUT0CnUi]
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
Send the command [MUT0C5] to turn on the
output volume for the card in slot #5.
17. [MUT1]
This command turns OFF the output volume
without changing the input port selected and
without changing any volume settings.
Command Format: [MUT1CnUi]
Cn = Card Slot Number
Ui = Unit ID (i = # from 0 to 9)
Example:
Send the command [MUT1C5] to turn off the
output volume for the card in slot #5.
18. [ON]
This command will enable an input, or turn on
the output volume of the card. When used to
turn on the output volume, it is equivalent to the
[MUT0] command.
Command Format, Input Enable: [ONmCnUi]
Command Format, Volume: [ONCnUi]
m = Input number (m = # from 1 to 8)
n = Card ID (n = # from 1 to max slots)
i = Unit ID (i = # from 0 to 9)
Example - Input Enable:
There is an MT109-100 card in slot #5.
1) [ON1C5]: Turns ON only Input 1.
2) [ON3C5]: Turns ON only Input 3. Input 1
is now OFF.
Example - Output Volume
Send the command [ONC5] to turn ON the
output volume for card #5.
PATH OPERATION
Command Format: [ONmCnUiP]
This command will set the path for the output,
but it is not active until the switch command,
[SW], is executed. Commands ending in "P" are
not executed immediately. The path for outputs
on multiple cards or the same card may be
preloaded.
m = Input number (m = # from 1 to 8)
n = Card ID (n = slot # from 1 to max slots)
i = Unit ID (i = # from 0 to 9)
P = Path
Example:
There are two MT109-100 cards in slots 6 and
7. Enable Input 1 of card 6 and Input 3 of card
7 simultaneously. To do this, send the following
commands:
[ON1C6P]
[ON3C7P]
[SW]
If "F" is included, use the [ONmCnUiPF]
command or the [ONmCnUiFP] command.
FEEDBACK OPERATION
Command Format: [ON…..F]
After processing a command, an OK or ER will
be returned as feedback if "F" is included at the
end of a command string.
Example:
[ON1C2U3F]: if path is not set
[ON1C2U3PF]: if path is set

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19. [OFF]
This command turns off the output volume
without changing the input selection or any
volume settings, and is equivalent to the
[MUT1] command.
Command Format: [OFFmCnUi]
m = Input number (m = # from 1 to 8)
n = Card ID (n = # from 1 to max slots)
i = Unit ID (i = # from 0 to 9)
Example:
Card 5 has Input 1 ON and a volume level of
16. Sending the command [OFFC5], turns OFF
the output volume, but leaves the volume
settings unchanged. When the output volume is
turned back on, the original volume level of 16
will be retained.
PATH OPERATION
Command Format: [OFFmCnUiP]
This command will set the path for the output,
but it is not active until the switch command,
[SW], is executed. Commands ending in "P" are
not executed immediately. The path for outputs
on multiple cards or the same card may be
preloaded.
m = Input number (m = 1 to 8)
n = Card ID (n = # from 1 to max slots)
i = Unit ID (i = # from 0 to 9)
P = Path
Example:
There are two MT109-100 cards in slots 6 and
7. Turn OFF the output volume on both cards
simultaneously using the commands:
[OFFC6P]
[OFFC7P]
[SW]
If "F" is included, use the [OFFmCnUiPF]
command or the [OFFmCnUiFP] command.
FEEDBACK OPERATION
Command Format: [OFF…..F]
After processing a command, an OK or ER will
be returned as feedback if "F" is included at the
end of a command string.
Example:
[OFFC2F]: if path is not set
[OFFC2PF]: if path is set
20. […S] – Save
This command will save the configuration
command being sent in memory. When
sending the command [VOL1A16C5S], after
reset or power up, Input 1 on C5 will be
restored with an input volume level of 16.
21. […F] – Feedback
After processing a command, an OK or ER will
be returned as feedback if "F" is included at the
end of a command string.
22. […P] – Path
This command will set the path for the output,
but it is not active until the switch command,
[SW], is executed. Commands ending in "P" are
not executed immediately. The path for outputs
on multiple cards or the same card can be
preloaded. See examples in ON and OFF
commands.
23. [SW] – Switch
The switch command immediately connects
inputs and outputs, which were previously set
with the path command on this card and all
other cards in the MT100-100.
Example:
[ON1C6P]
[ON3C7P]
[SW]
The system will return feedback as OK if the
unit ID is zero.

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24. [TEST]
This command performs a series of internal
tests on the internal memory.
Upon completion, the system will display
"MEMORY IS GOOD" if all tests pass.
Otherwise, failures will be indicated.
25. [HELP]
This command displays information available
for the Multi-Tasker interface commands.
Command Format: [HELPCnUi]
Cn = card ID (n = # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
In order to display the RS-232 commands
available for the MT109-100 card in slot 2, send
the command [HELPC2]. The commands
along with a brief description will be displayed
in the Terminal Window.
26. [WR]
This command groups multiple cards in the
Enclosure. Each unit contains a maximum of
nine groups.
In Multi-Tasker™ systems with audio and video
cards, boards are typically grouped as follows:
Group 1 = Video Cards
Group 2 = Audio Cards
Group 3 = Video and Audio Cards
If assigning group commands to button
functions, it is best to use the "Press and Hold
on Power Up" to make group settings.
Command Format: [WRCn…GkUi]
Cn = Card ID (n = slot # from 1 to max slots)
Gk = Group number (k = # from 1-8)
Ui = Unit ID (i = # from 0-9)
Example:
To group cards 1, 2, and 3 as group 5 of
Unit ID 1, send the command
[WRC1C2C3G5U1]. After executing this
command, cards 1, 2 and 3 will be grouped
together as group 5 of Unit ID 1.
27. [CLRG]
This command clears the members for a single
group or for all nine groups. The clear
command restores the cards to default settings.
Command Format: [CLRGkUi]
Gk = Group number (k = # from 1-8)
Ui = Unit ID (i = # from 0-9)
Example:
1) To clear group 1, send the [CLRG1U1]
command. This command clears the
members for the specified group only.
2) To clear all groups of Unit ID 1, send the
[CLRG[U1] command.
28. [RD]
This command displays the members in each
group.
Command Format: [RDGkUi]
Gk = Group number (k = # from 1-8)
Ui = Unit ID (i = # from 0-9)
Example:
The cards in slots 1, 2 and 19 are part of
group 5 in Unit ID 1. Read the member data for
group 5 of Unit ID 1, by sending the command
[RDG5U1]. The system will return feedback as
follows:
C1C2C19 G5U1
C1 = Card in Slot 1
C2 = Card in Slot 2
C19 = Card in slot 19
G5 = Group 5
U1 = Unit ID 1

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29. [CLM]
This command removes the members in a
group and leaves the group empty.
Command Format: [CLMGkUi]
Gk = Group number (k = # from 1-8)
Ui = Unit ID (i = # from 0-9)
Example:
Group 5 of Unit ID 1 contains the cards in slots
1, 2 and 19. Read the member data for group 5
of Unit ID 1. Send the command [RDG5U1]
and receive the following feedback:
C1C2C19 G5U1
Now, clear group 5 by sending the command
[CLMG5U1]. Reread the member data as above
and note the following feedback:
NONE G5U1
7.3. SUMMARY OF COMMANDS
Card Commands
1) [VER] Receives software version
2) [C] Receives status of the card
3) [CnS] Save card settings
4) [?] Show status/ general information
5) [CLR] Reset card to default values
6) [STA] Enable/disable auto feedback
7) [SEL] Select input volume to adjust
[ + ][ - ] Adjust volume levels
8) [VOL] Set an absolute volume level
9) [RUP] Ramp volume UP to 32
10) [RUP=] Ramp volume UP to a value
11) [RDN] Ramp volume DOWN to 1
12) [RDN=] Ramp volume DOWN to a value
13) [RAMP] Return ramp rate
14) [RAMP=] Set ramp rate
15) [RST] Stop ramping
16) [MUT0] Mute OFF
17) [MUT1] Mute ON
18) [ON] Output volume ON or select input
19) [OFF] Turn output volume ON/FF
20) […S] Save the command configuration
21) […F] Provides feedback upon sending
22) […P] Sets the path, preload for [SW]
23) [SW] Switch preloaded output buffer
24) [TEST] Perform board memory test
25) [HELP] Display available commands
Group Commands
26) [WR] Groups multiple cards
27) [CLRG] Clears group members
28) [RD] Displays group members
29) [CLM] Removes members from group.
7.4 MENU MODE
MENU MODE commands are RS-232 commands
that allow the same functionality as programming
commands. Unlike the programming commands in
the previous sections, 7.2 and 7.3, MENU
commands prompt the user to select from a list of
available commands. The system then responds
based upon selections made by the user.
MENU commands may be issued in response to
prompts from within MTSetup™ or other RS-232
communication software.
The MENU driven commands are only available
with Multi-Tasker™ Front Panel systems that have
the following firmware:
690-0122-015 = Version 015 or later.
690-0123-004 = Version 004 or later.
690-0124-015 = Version 018 or later.
NOTE: In MTSetup™, send the command [VER]
from the Terminal Window. The system will
respond with feedback similar to the following:
[690-0122-015 690-0123-004 690-0124-018]

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Check the last three digits against the numbers
above to determine if the MENU MODE option is
available.
7.4.1 MENU COMMAND DEFINITIONS
Refer to section 7.2 for details on card functions
and examples. Following is a cross-reference of
menu mode sections versus programming
commands.
MENU COMMAND
Control
Switch [ON]
Volume [VOL], [RUP], [RDN], [RST]
Mute [MUT0], [MUT1], [OFF], [ON]
Clear [CLR]
Setup
Input Volume [VOL]
Ramp Time [RAMP]
Group [WR], [CLM]
Status [VER], [C]
Help [HELP]
Not Available [?], [CnS], [STA], […S], [...F],
[...P], [SW], [TEST], [CLRG],
[RD], and [SEL] with [+], [-]
7.4.2 USING MENU MODE
SUGGESTION: Before using the menu mode, it
is best to disable the automatic feedback
feature. The values and current settings will be
displayed in the menu mode, but the automatic
feature will display after each setting change
making the menus difficult to read.
1. In order to enter MENU mode, the system
needs to be connected to a computer
running MTSetup™ or other RS-232 control
software.
2. Insert the card into an empty slot and push
in all the way for a secure fit.
3. Reset the system or power the system OFF
and then ON.
4. In MTSetup™, click the cursor in the
Terminal Window and press the ENTER
key.
5. The system will interrogate the enclosure
and return a list cards installed and their
slot locations.
Example: 8 (Slot 8): MT109-100
NOTE: Only cards supporting the MENU
feature will be displayed.
5. Find the alphanumeric character
representing the card whose setup requires
changing. It will be the first character in the
line.
6. Press the number or letter associated with
the card, and a menu with options available
for that card will appear on the screen. In
the example above, press "8".
WARNING: Do NOT enter any characters
except the one relating to the desired
menu. Pressing ENTER or RETURN after
"8" will force the system back to the original
prompt.
7. After selecting the MT109-100 as described
above, the system will prompt for selections
specific to that card.
8. Read each menu carefully, and continue
selecting keys as prompted for further
functions. (Example prompt: "Key= ")
7.4.3 MENU TYPES
1. MAIN MENU
The first menu displayed after selecting the
card is the Main Menu. This menu provides
access to the main functions related to the
card. Press the key representing the menu
item to access. A sub menu will appear
next.
2. SUB MENUS
Each sub menu will display either another
menu (sub menu) or a list of available
options or settings. Press the key
corresponding to the menu choice to
change a setting or select the next menu.

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NOTE: Pressing the ESCAPE (ESC) key in
most menus will take you up to the
previous menu without making changes in
the current menu. In the some menus, the
ESC key is used to confirm the card/group
selection or new volume setting.
7.4.4 MT109-100 MENUS
Following are the menus available to the
MT109-100. The first menu is the Main Menu
only. The second listing is an expansion of all
the menu items available.
The expanded menu contains values in
parentheses that indicate the current setting or
value of that parameter. In some areas,
additional comments are provided for
clarification.
System prompts requiring specific values for
volume, card number etc… are not shown. See
the examples following the menus for details.
CAUTION: Pay special attention to the top of
the CONTROL menu. After selecting the
CONTROL menu, THIS CARD or a group will
be identified at the top of the sub menu. Since
group functions may be modified from this
menu, make sure the desired card or group is
selected.
MT109-100 MAIN MENU
PRESS KEY TO SELECT
1: CONTROL
2: SETUP
3: STATUS
4: HELP
ESC: GO BACK
KEY =
MT109-100 EXPANDED MENUS
1. CONTROL: THIS CARD
1: SWITCH (Input=3)
1: INPUT1 (InVol=10)
2: INPUT2 (InVol=32)
3: INPUT3 (InVol=32)
4: INPUT4 (InVol=32)
5: INPUT5 (InVol=32)
6: INPUT6 (InVol=32)
7: INPUT7 (InVol=32)
8: INPUT8 (InVol=32)
2: VOLUME (OutVol=05)
1: SET ABS VOL
2: RAMP UP
3: RAMP DOWN
3: MUTE (off)
1: MUTE ON
2: MUTE OFF
4: CLEAR
1: YES
ESC: NO
5: SELECT (Card/Group)
0: SELECT THIS CARD
1: SELECT GROUP 1
2: SELECT GROUP 2
3: SELECT GROUP 3
4: SELECT GROUP 4
5: SELECT GROUP 5
6: SELECT GROUP 6
7: SELECT GROUP 7
8: SELECT GROUP 8
ESC: ACCEPT