Altinex MULTI-TASKER MT109-102 User manual

MULTI-TASKER™
MANUAL PART NUMBER: 400-0343-003
MT109-102
3 IN 1 OUT AUDIO/MIC MIXER
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 MT109-102 ..................................3
TECHNICAL SPECIFICATIONS ..........................3
DESCRIPTION OF MT109-102............................4
APPLICATION DIAGRAM....................................5
DIAGRAM1: TYPICAL SETUP..........................5
DIAGRAM2: INTERNAL VIEW ..........................6
DIAGRAM3: SWITCH POSITIONS ...................7
INSTALLING YOUR MT109-102..........................8
OPERATION........................................................8
RS-232 CONTROL ............................................8
DESCRIPTION OF COMMANDS.......................8
SUMMARY OF COMMANDS ...........................19
MENU MODE...................................................20
TROUBLESHOOTING GUIDE...........................24
LED IS NOT ON...............................................24
NO SOUND......................................................24
SOUND DISTORTION .....................................25
SOUND LEVEL IS LOW...................................25
ALTINEX POLICY..............................................25
LIMITED WARRANTY/RETURN POLICY........25
CONTACT INFORMATION..............................25

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PRECAUTIONS / SAFETY WARNINGS.......1
Please read this manual carefully before using
your MT109-102. Keep this manual handy for
future reference. These safety instructions are to
ensure the long life of your MT109-102 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 MT109-102
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 MT109-102 carefully. Dropping or
jarring can damage the card.
•Do not pull the cables that are attached to the
MT109-102.
•Insert the card carefully into the slots of the
Multi-Tasker™ without bending any edges.
1.2 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.
1.3 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 their 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 MT109-102 2
MT109-102
3 in 1 out Audio Mixer Card
The MT109-102 is a Stereo Audio Mixer Card.
When installed in the Basic Enclosure
(MT100-100), this card allows connection of up to
three line level balanced or unbalanced
microphone inputs.
Mixing of inputs is controled via easy-to-use ASCII
commands from a control system or computer
connected to the RS-232 port of the MultiTasker™
Basic Enclosure. The MT109-102 can accept
balanced or unbalanced audio inputs and the
output can be wired for either balanced or
unbalanced audio output.
Through RS-232 control, the MT109-102 can be
controlled to adjust the signal level of each input in
16 steps. In addition the volume, treble and bass
of the output amplifier can be adjusted in 16 steps.
All three inputs to the amplifier are mixing inputs
and can be adjusted from 0db to –60db.
Phantom Power +12V can be connected to the
microphone input using a dip-switch located on the
PCB.
TECHNICAL SPECIFICATIONS 3
FEATURES/DESCRIPTION MT109-102
GENERAL
Inputs
Input Connectors (3) Terminal Blocks
Input 1 Balanced/Unbalanced
Microphone Input
Input 2 Balanced/Unbalanced
Microphone Input
Input 3 Balanced/Unbalanced
Microphone Input
Outputs
Output Connector (1) Terminal Block
Output Line Level
Balanced/Unbalanced
Compatibility Stereo or Mono Audio
Table 1. MT109-102 General
MECHANICAL MT109-102
Basic Enclosure Slots
Required One Slot
Weight 0.43 lb (0.19 kg)
Connector Panel Black
T° Operating 10°C-50°C
T° Maximum 75°C
Humidity 90% non-condensing
MTBF (calc.) 55,000 hrs
Table 2. MT109-102 Mechanical
ELECTRICAL MT109-102
Input Signals
Max Line Level Input 0 dBu (.7V p-p) 10k Ohms
Max microphone Input -65dBu (2-10mv) 47 Kohm
Frequency Response
10 Hz to 20 kHz
(+/-0.5 dB)
Noise Floor -97 dB @ 20 kHz
Table 3. MT109-102 Electrical

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DESCRIPTION OF MT109-102 4

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APPLICATION DIAGRAM 5
DIAGRAM 1: TYPICAL SETUP

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DIAGRAM 2: INTERNAL VIEW
Σ
AUDIO
LINE/MIC
INPUT1
BALANCED
AUDIO
LINE/MIC
INPUT2
BALANCED
MIC
S/W
GAIN
MIC
S/W
GAIN
S/W
GAIN
PHANTOM
POWER MP CONTROL POWER SUPPLY
LINE/MIC
INPUT3
BALANCED
MIC
GAIN
S/W
FIXED MIX LINE
LEVEL OUTPUT
VOLUME
BASS
TREBLE
SW1
SW2
SW3
SW10
ADJUSTABLE
MIX LINE
LEVEL OUTPUT
TERMINAL
BLOCK
OR
M-
SW4
SW5
M+
M-
SW6
M+
SW7
M-SW8
M+
SW9
OUTPUT
INPUTS TB

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DIAGRAM 3: SWITCH POSITIONS
SW1
INPUT1
LINE MIC
PHANTOM
ON OFF LINE
INPUT2
MIC LINE
INPUT3
MIC
SW2
SW3
SW4
SW5
SW6
SW7
OFF ON
ONOFF
ONOFF
ON
LINE OUTPUT
FIX ADJ
OFF ON
SW9
SW10
SW8
- + +-
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
ON
ON
OFF
POWER POWER
PHANTOM
OFF
ON
+- - +
POWER
PHANTOM
OFF
ON
+- - +

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INSTALLING YOUR MT109-102 6
Step 1. Turn off the power to the Multi-Tasker™
enclosure.
Step 2. Slide the MT109-102 into an available
slot in the Multi-Tasker™ Basic Enclosure
in order to connect to the bus. Make sure
that the MT109-102 card fits into place.
Step 3. Secure the card to the Multi-Tasker™ by
tightening the retainer screws located on
the top and bottom of the MT109-102
card.
Step 4. Turn the Multi-Tasker™ system power
back on.
Step 5. The LED on the card panel will turn red
indicating that the card is in full operation.
Step 6. Connect audio cables from the audio
source to the input connector of the
MT109-102. Connect the output
connectors of the MT109-102 to the
audio equipment through an audio cable.
Step 7. Starting from the left, identify the slot
number where the MT109-102 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
MT109-102 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 MT109-102 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.
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 or Group 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 up to
1 to 20 depending on the enclosure.
Card ID 0 (C0) is used for the controller. See
the MT100-100 User’s Guide for details.

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The Group ID is a number representing a group
of cards defined with the [WR] command.
When using the Group ID, all cards in the group
will perform the given instruction.
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 MT109-102 card.
Command Format: [VERCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
An MT109-102 card is in slot #4. Send the
command [VERC4], and the Multi-Tasker™
Enclosure will return the following feedback:
MT109-102 690-0133-008
MT109-102 = the card model
690-0133-008= the 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 = # from 0 to 9)
Example:
There is one MT109-102 card in slot #4.
Sending the command [C4] to the
Multi-Tasker™ will display feedback similar to
the following:
In1Vol=16/16
In2Vol=16/16
In3Vol=16/16
OutVol=16/16
Bass =08/16
Treble=08/16
Loudness:OFF
The status shows the input volume settings, in
this case 16 out of 16, the output volume, the
bass and treble levels and that the loudness
feature is turned off.
If there is no card in slot #4, sending the [C4]
command will not return any feedback.
3. [CnS]
This command saves the card volume settings.
This configuration will be restored after the
system is reset or powered off then on.
Command Format: [CnSUi]
Cn = Card ID (n = # from 1 to max slots)
S= save configuration
Ui = Unit ID (i = # from 0 to 9)
Example:
There is an MT109-102 in slot #4. All volume
levels are set to the maximum of 16. The bass
and treble levels are set to 08. Save the
settings of the card by sending the command
[C4S]. The feedback will be as follows:
In1Vol=16/16
In2Vol=16/16
In3Vol=16/16
OutVol=16/16
Bass =08/16
Treble=08/16
Loudness:OFF
Card Status Saved

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4. [?CnUi]
This command will return general information
about the card and its status. It is a function of
both the card and the front panel and is 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.
690-0124-018 = 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]
Check the last three digits against the numbers
above to determine if the option is available.
Command Format: [?CnUi]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = from 0 to 9)
The MT109-102 is in slot #4. Send the
command [?C4] to receive the feedback status.
Each status field begins with a '+' and ends with
the card slot number (ex: C04). The feedback
will be similar to the following:
[+MT109-102C04+VR690-0133-008C04
+VO16C04+VI161616C04+VB08C04+VT08C0
4+VL01C04+VM0C04]
MT109-102= Card Type
VR690-0133-008= Firmware version
VO16 = Output Volume Level=16
VI161616 = Input volume levels
VB08 = Bass level = 08 out of 16
VT08 = Treble level = 08 out of 16
VL01 = Loudness (00=ON, 01=OFF)
VM0= Mute (0=OFF, 1=ON)
The Input Volume status line is read from left to
right as outputs one through three. Each
volume level is 2 digits, in this case,each is set
to 16.
5. [?Ui]
This command will return general information
about the Multi-Tasker™ and cards installed in
the unit.
Command Format: [?Ui]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = from 0 to 9)
Example:
A Multi-Tasker™ with ID #0has a front panel
with part number MT101-102and contains an
MT109-102. Send the command [?] and receive
the following feedback:
[+MT101-102U0+MT109-102C04]
MT101-102U1 = Panel Number and Unit ID
MT109-102C04 = An MT109-102 is in slot 4.
6. [STA]
This command enables/disables automatic
feedback from the front panel. The command
affects any card with auto-feedback capability,
not just the MT109-102.The default at power
on or reset is STA0, OFF.
Command Format [STA1] = ON
Command Format [STA0] = OFF
Feedback Prefix Definitions:
+VR =Firmware Version
+VO =Output Volume
+VI = Input Volume
+VB = Bass Volume
+VT =Treble Control
+VL =Loudness Control
+VM =Mute Control
Example:
Command = [VLOA12C04]
Feedback = [+VO12C04]
+VO =Output Volume
12 = Output volume level12
C04 = Card slot number

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7. […S] –SAVE
This command will save the configuration
command being sent in memory. When
sending the command [VLBA12C4S], after
reset or power up, the bass level on C4 will be
12 out of 16.
8. […F] –FEEDBACK
After processing a command, an OK or ER will
be returned as feedback if "F" is included at the
end of some command strings.
9. [ + ] and [ - ]
These commands allow a selected property to
be adjusted from keyboard commands or
programmed front panel buttons.
Command Format: [ + ], [ - ]
[+] = Increment level by one step
[-] = Decrement level by one step
Example:
Select the Output Volume command for the
card in slot #4. The current Output Volume level
is 10, but it is not the optimal value. After
sending the following commands, an optimum
volume level of 15 is obtained:
1. [SELOC4]
The current volume level is 10.
2. [ –] [ –] [ –]
The level is now 7 and is too low.
3. [+][+][+][+][+][+][+][+]
The level is now 15 and no further
adjustments are required.
10. [SELIm]
This command sets the path to adjust the
INPUT volume level. The input volume range is
00 to 16 and is adjustable using the [+] and [-]
commands.
Command Format: [SELImCnUi]
m= Input (m = # from 1to 3)
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
An MT109-102 is in slot #4. Adjust the volume
on Input 2 by sending the command [SELI2C4]
and then using the [+] and [-] commands.
11. [SELO]
This command sets the path to adjust the
OUTPUT volume level. The output volume
range is 00 to 16 and is adjustable using the [+]
and [-] commands or the Volume Ramping
commands.
Command Format: [SELOCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example 1:
An MT109-102 is in slot #4. Adjust the output
volume by sending the command [SELOC4]
and then using the [+] and [-] commands.
Example 2:
The output volume may also be adjusted using
key ramping commands. See the VOLUME
RAMPING FEATURE section of this manual for
details on using this feature.
12. [SELB]
This command sets the path to adjust the bass
level. The BASS level range is 00 to 16 and is
adjustable using the [+] and [-] commands.
Command Format: [SELBCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)

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Example:
An MT109-102 is in slot #4. Adjust the BASS on
the output by sending the command [SELBC4]
and then using the [+] and [-] commands.
13. [SELT]
This command sets the path to adjust the treble
level. The TREBLE level range is 00 to 16 and
is adjustable using the [+] and [-] commands.
Command Format: [SELTCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
An MT109-102 is in slot #4. Adjust the TREBLE
on the output by sending the command
[SELTC4] and then using the [+] and [-]
commands.
14. [VLOA]
This command sets the OUTPUT volume to an
absolute value.
Command Format: [VLOAmCnUi]
m= Volume Level (m= # from 0to 16)
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Set the output volume to 16 for the MT109-102
in slot #4. Send the command [VLOA16C4].
15. [VLIxAm]
This command sets an INPUT volume to an
absolute level.
Command Format: [VLIxAmCnUi]
x= Input Number (x = # from 1 to 3)
m= Volume Level (m= # from 0to 16)
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Set Input 2 volume level to a value of 8 for the
card in slot #4. Send the command
[VLI2A8C4].
16. [VLBA]
This command sets the output BASS level to an
absolute level.
Command Format: [VLBAmCnUi]
m= BASS Level (m = # from 0to 16)
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Set the output BASS level of the MT109-102 in
slot #4 to the maximum of 16 by sending the
command [VLBA16C4].
17. [VLTA]
This command sets the output TREBLE level to
an absolute value.
Command Format: [VLTAmCnUi]
m= TREBLE (m = # from 0to 16)
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Set the output TREBLE of the MT109-102 in
slot #4 to a mid-range value of 8 by sending the
command [VLTA8C4].
18. [LOD0]
This command disables the loudness feature.
Command Format: [LOD0CnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Turn OFF the Loudness feature of the
MT109-102 in slot #4 by sending the command
[LOD0C4].

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19. [LOD1]
This command enables the loudness feature.
Command Format: [LOD1CnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Turn ON the Loudness feature of the
MT109-102 in slot #4 by sending the command
[LOD1C4].
20. [CLR]
This command clears the card and resets it to
its factory defaults. All volume levels are set to
maximum, bass and treble are set to midrange,
loudness is turned off and mute is turned off.
Command Format: [CLRCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Clear the MT109-102 in slot #4 by sending the
command [CLRC4]. Send the status command
after the clear command and receive the
following feedback:
In1Vol=16/16
In2Vol=16/16
In3Vol=16/16
OutVol=16/16
Bass =08/16
Treble=08/16
Loudness:OFF
VOLUME RAMPING FEATURE
The following 7 commands are used to control the
output volume of the MT109-102. They may be
used with computer control, but also are designed
to be used with the {SETVK} command using keys
on the Front Panel. The following code sample
sets front panel keys 8 and 10 to Ramp Up and
Ramp Down respectively. See your Front Panel
User’s Guide for more details.
When defined as a volume control key, the key will
respond to two conditions: press and release.
Below, subroutine 8 starts ramping up when key 8
is pressed and subroutine 10 starts ramping down
when key 10 is pressed. Subroutine 108 stops
ramping when either key is released.
{WRS8=RUPC4} //Ramp Up
{WRK8=8,108,0,0,0} //Press=start, release=stop
{WRS10=RDNC4} //Ramp Down
{WRK10=10,108,0,0,0} //Press=start, release=stop
{WRS108=RSTC4} //STOP RAMPING
{SETVK8} //Set key 8 as volume key
{WRLK8=VOL_UP} //Define Key 8 Label
{SETVK10} //Set key 8 as volume key
{WRLK10=VOL_DN} //Define Key 8 Label
[RAMP=10C4] //Set the ramp rate.
21. [RUP]
This command ramps the OUTPUT volume to
its maximum level at the rate defined using the
[RAMP] command.
Command Format: [RUPCnUi]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Ramp the output volume from a starting level of
10 to the maximum level of 16 for the card in
slot #8. Send the command [RUPC8] and the
system will respond with the following feedback:
[11][12][13]…[16]
22. [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 01-16)
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)

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Example:
Ramp the output volume from a starting level of
1 to a level of 10 for the card in slot #8. Send
the command [RUP=10C8] and the system will
respond with the following feedback:
[02][03][04]…[10]
23. [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 ID (n = # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Ramp the output volume from a starting level of
16 down to 1 for the card in slot #8. Send the
command [RDNC8] and the system will respond
with the following feedback:
[16][15][14]…[01]
24. [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 01-16)
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
Ramp the output volume from a starting level of
16 down to 8for the card in slot #8. Send the
command [RDN=8C8] and the system will
respond with the following feedback:
[16][15][14]…[8]
25. [RST]
This command stops ramping and maintains the
last volume setting.
Command Format: [RSTCnUi]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
The card in slot #8 is ramping from 1 to 16.
Send the command [RSTC8] and the card will
stop ramping the output volume. The last
displayed volume setting will remain the current
volume level.
26. [RAMP]
This command displays the ramping time for 16
steps. The time between each step is equal to
the time in seconds divided by 16.
Command Format: [RAMPCnUi]
Cn = Card ID (n = # from 1 to max slots)
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
27. [RAMP=x]
This command sets the ramp rate for 16 steps.
The settings range from 4to 18 seconds, in
two-second intervals.

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Command Format: [RAMP=xCnUi]
x = Rate in Seconds
4= 0.25 seconds/step
6= 0.38 seconds /step
8= 0.50seconds /step
10 = 0.63 seconds /step
12 = 0.75 seconds /step
14 = 0.88 seconds /step
16 = 1.00 seconds /step
18 = 1.13 seconds /step
Cn =Card ID (n = # from 1 to max slots)
Ui =Unit ID (i = # from 0 to 9)
Example:
There is an MT109-102 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 16 steps in 16 seconds, or 1
second per step. Confirm the setting by sending
the command [RAMPC5] and receiving the
feedback:
RAMPTIME = 16 SECONDS
28. [TEST]
This command performs a test on the internal
memory. Upon completion, the system will
display the results. If there are no problems, the
system will display the following:
MEMORY IS GOOD
Otherwise, failures will be indicated.
Command Format: [TESTCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
There is an MT109-102 in slot #10. In order to
test the internal memory, send the command
[TESTC10].
29. [FBD]
This command turns feedback delay on or off. It
is necessary when installing some newer cards
in older systems. If the system does not receive
all of the feedback from the card, the card may
be communicating too fast. This command will
slow down the card's communication rate.
Command Format: [FBDmCnUi]
m= Delay (0= no delay, 1= delay 100mS)
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = from 0 to 9)
Example:
The command [HELPC4] is sent to the card in
slot #4. Some of the HELP file is displayed on
the screen, but most is missing. Send the
command [FBD1C4] to slow down the rate at
which the card sends feedback to the system.
CARD ID COMMANDS
The default Card ID is the same as the card slot
number. The next several commands allow the
user to change the Card ID to a value other
than the slot number.
The ID commands work with all Multi-Tasker™
Front Panel systems. However, front panels
that have firmware releases prior to the
following will not be able to address Card ID's
greater than the number of slots in the system:
690-0122-019= Version 019 or later.
690-0123-005= Version 005 or later.
690-0124-019= Version 019 or later.
NOTE: In MTSetup™, send the command
[VER] from the Terminal Window. The system
will respond with feedback similar to the
following:
[690-0122-015 690-0123-005 690-0124-019]
Check the last three digits against the numbers
above to determine if the Card ID commands
can address all 99 Card ID's.

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Some cards require more than one slot in the
Multi-Tasker™ system. As an example, some
matrix switcher cards require 4 slots. If there
are 5 of these cards installed, they would be
numbered C4, C8, C12, C16 and C20.
Changing the Card ID allows the user to define
the cards as C1, C2, C3, C4 and C5.
Another use for changing the Card ID is to be
able to use multiple systems without having to
set each unit to a different Unit ID. All systems
may be left as Unit ID 0 for ease of
programming. The cards in the first unit may be
numbered 1-10 and in the second unit 11-20.
30. [RSI]
This command resets the card ID's in the
system. After sending this command, each card
ID in the system will match the slot number of
the card. Use this command along with the SID
commands that follow. The [RSI] command
MUST be used prior to changing Card ID's once
they have already been set.
Command Format: [RSI]
Example:
Send the command [RSI] to the system with
Unit ID 0. The card in slot 1 will have ID 1, the
card in slot 2 will have ID 2 and so on.
31. [SIDn]
This command sets all the cards installed in the
Multi-Tasker™ system to the same Card ID.
After sending this command, all cards will be
addressed with the same ID. Use caution when
sending this command to a system with multiple
board types.
Command Format: [SIDn]
n= Card ID (n = # from 1 to 99)
Example:
Send the command [SID1] to the system. All
the cards in the system now have ID 1. Any
commands that are sent to Card ID 1 will be
received and executed by each card.
32. [SIDnCi]
This command sets the Card ID of a single card
to a number from 1 to 99.
Command Format: [SIDnCi]
n= Card ID (n = # from 1 to 99)
Ci = Slot Number (i = # from 1 to max slots)
Example:
Send the command [SID50C10] to set the ID of
the card in slot #10 to an ID of 50.
33. [SID+]
This command sets the Card ID of all the cards
in a system to their slot number plus the offset
value.
Command Format: [SID+n]
n = Offset amount (n = # from 0 to 99)
The maximum Card ID is 99, so subtract
the highest slot number from 99 to find
the maximum offset. For example, in an 8
slot enclosure, the maximum offset would
be 91. The slot number, 8, plus the
offset, 91, equals 99.
Example:
There are two, 20 slot enclosures to be
connected together during normal operation.
The first unit will use the Card ID defaults which
are equal to their slot numbers. The second unit
will have the same Unit ID, but will have the
card ID's offset by 20.
Connect the computer to the second unit only
and send the command [SID+20] to set the ID
of all the cards in the enclosure to their slot
number plus 20. Reconnect both units to the
computer.
The cards in the first unit will be referenced as
Card ID's 1-20 and the cards in the second unit
will be referenced by Card ID's 21-40.

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34. [RSN]
This command reads the slot number of the
card with a specified ID number, and returns
the value to the system to be displayed in the
terminal window. If more than one card has the
same ID, each slot number will be displayed.
Command Format: [RSNCi]
Ci = Card ID (i = # from 1 to 99)
Example:
The card in slot #4 takes up four slots in the
enclosure. Its ID was set to 1 since it is the first
card installed in the system, reading from left to
right. Send the command [RSNC1] to find the
slot number of this card. The system responds
with the following feedback:
4
35. [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 MT109-102 card in slot #2,
send the command [HELPC2]. The commands
along with a brief description will be displayed
in the Terminal Window.
36. [WR]
This command groups multiple cards in the
enclosure allowing all the group members to be
controlled simultaneously with the same
command. Each unit may define a maximum of
eight 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: [WRCn1Cn2…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. The system
will return the following feedback:
G1=C1C2C3
Now, when a command is sent to G1, each
board in G1 will execute the same command.
37. [RMC]
This command may be used to remove one or
more group members from a group. Reset the
system after using this command for all
changes to take effect.
Command Format: [RMCn1Cn2…GkUi]
Cn = Card ID (n= # from 1 to max slots)
Gk = Group number (k = # from 1-8)
Ui = Unit ID (i = # from 0-9)
Example:
Group 1 consists of the cards located in slots
numbered 1, 2, 3, 4 and 5. Remove just cards
#4 and #5 from the group by sending the
command [RMC4C5G1]. The system will return
the following feedback:
G1=C1C2C3

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38. [RMG]
This command may be used to delete an entire
group, or all groups.
REMOVE ONE GROUP MEMBERS
Remove all the members from the group,
effectively deleting the group.
Command Format: [RMGkUi]
Gk = Group number (k = # from 1-8)
Ui = Unit ID (i = # from 0-9)
Example:
Group 1 consists of the cards located in slots
number 1, 2 and 3. Remove all cards from the
group by sending the command [RMG1]. The
system will return the following feedback:
G1=EMPTY
REMOVE ALL GROUPS
Remove all the members from every group,
effectively deleting all groups.
Command Format: [RMGÜUi]
Ui = Unit ID (i = # from 0-9)
Example:
Group 1 consists of cards 1 and 2. Group 2
consists of cards 1, 2, 3, 4 and 5. Delete all the
groups by sending the command [RMGÜ]. The
system will return the following feedback:
G1-G8:EMPTY
39. [RD]
This command reads and then 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. Read the member data for group 5, by
sending the command [RDG5]. The system will
return feedback as follows:
G1=C1C2C19
The feedback shows G1 (Group 1) and then the
cards that make up Group 1. In this case,
Group 1 includes C1, C2 and C19.
40. [CLRG]
This command clears the members for a single
group or for all groups. The clear command
restores the cards to default settings and is the
equivalent to sending the [CLR] command to
each individual card.
NOTE: Since this command is sending the
[CLR] command to its group members,
each card will display its own reset
message, if any.
Command Format: [CLRGkUi]
Gk = Group ID (k = # from 1-8, or Üfor all)
Ui = Unit ID (i = # from 0-9)
Example:
1) To clear group 1 of Unit ID 0, send the
[CLRG1] command. This command clears
the members for the specified group only.
2) To clear all groups of Unit ID 1, send the
[CLRGÜU1] command.
41. [CLM]
This command removes the members in a
group and leaves the group empty. It is
equivalent to sending the [RMGkUi] command
without card references.
Command Format: [CLMGkUi]
Gk = Group number (k = # from 1-8)
Ui = Unit ID (i = # from 0-9)

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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:
G1=C1C2C19
Now, clear group 5 by sending the command
[CLMG5U1]. Reread the member data as above
and note the following feedback:
G1=EMPTY
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) [?C] Show card information
5) [?] Show system cards
6) [STA]Enable/disable auto feedback
7) […S] Save the command being sent
8) […F] Show command feedback
9) [ + ] Increments and Decrements
[ - ] selected commands
10) [SELI] Select input volume to adjust
11) [SELO] Select output volume to adjust
12) [SELB] Select to adjust bass level
13) [SELT] Select to adjust treble level
14) [VLO] Set absolute output volume
15) [VLIm] Set absolute input volume
16) [VLB] Set absolute bass level
17) [VLT] Set absolute treble level
18) [LOD0] Turn ON loudness feature
19) [LOD1] Turn OFF loudness feature
20) [CLR] Reset card to default values
21) [RUP] Ramp volume UP to max (16)
22) [RUP=] Ramp volume UP to a value
23) [RDN] Ramp volume DOWN to min (1)
24) [RDN=] Ramp volume DOWN to a value
25) [RST] Stop ramping
26) [RAMP] Display ramp rate
27) [RAMP=] Set ramp rate
28) [TEST] Test internal memory IC's
29) [FBD] Feedback delay on/off
30) [RSI] Reset Card ID’s
31) [SIDn] Set all Card ID’s
32) [SIDnCi] Set one Card ID
33) [SID+n] Set Card ID offset
34) [RSN] Read Card slot number
35) [HELP] Display available commands
Group Commands
36) [WR] Groups multiple cards
37) [RMC] Remove members from group
38) [RMG] Delete group
39) [RD] Displays group members
40) [CLRG] Clears group members
41) [CLM] Delete group