Altinex Multi Tasker MT103-122 User manual

MULTITASKER™
MANUAL PART NUMBER: 400-0373-001
VGA + AUDIO TO CAT-5 TRANSMITTER
FOR MULTITASKER™
USER’S GUIDE
MT103-122

MULTITASKER™
1
TABLE OF CONTENTS
Page
PRECAUTIONS / SAFETY WARNINGS..............2
GENERAL..........................................................2
INSTALLATION .................................................2
CLEANING.........................................................2
FCC /CE NOTICE..............................................2
ABOUT YOUR MT103-122...................................3
TECHNICAL SPECIFICATIONS...........................3
PRODUCT DESCRIPTION ..................................4
APPLICATION DIAGRAM....................................5
DIAGRAM1: TYPICAL CONFIGURATION ........5
DIAGRAM2RJ-45 PINOUT ..............................6
DIAGRAM3INTERNAL VIEW ..........................7
DIAGRAM4: DIP SWITCH SETTINGS..............8
INSTALLING YOUR MT103-122..........................9
OPERATION........................................................9
RS-232 CONTROL.............................................9
DESCRIPTION OF COMMANDS.......................9
SUMMARY OF COMMANDS ...........................14
MENU MODE...................................................14
ADJUSTMENTS...............................................16
VIDEO EQUALIZATION...................................16
AUDIO GAIN....................................................16
TROUBLESHOOTING GUIDE...........................16
LED IS NOT RED.............................................16
LED IS NOT GREEN (VGA) .............................17
NO DISPLAY....................................................17
REMOTE IMAGE QUALITY IS POOR..............18
NO SOUND......................................................18
ALTINEX POLICY..............................................18
LIMITED WARRANTY/RETURN POLICY........18
CONTACT INFORMATION..............................18

MULTITASKER™
2
PRECAUTIONS / SAFETY WARNINGS 1
Please read this manual carefully before using your
MT103-122. Keep this manual handy for future
reference. These safety instructions are to ensure
the long life of your MT103-122 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.
1.2 INSTALLATION
•To prevent fire or shock, do not expose this unit
to rain or moisture. Do not place the MT103-122
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 MT103-122 carefully. Dropping or
jarring can damage the unit.
•Do not pull the cables that are attached to the
MT103-122.
1.3 CLEANING
•Clean only 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 unit. Do not open the unit to clean.
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.

MULTITASKER™
3
ABOUT YOUR MT103-122 2
MT103-122
VGA + AUDIO TO CAT-5
TRANSMITTER FOR MULTITASKER™
ENCLOSURES
The MT103-122 provides a means of transmitting
computer video and audio signals over twisted pair
(CAT-5) type cable when used together with an
ALTINEX Twisted Pair Video Receiver, such as the
MT103-123 or DA1931CT.
The MT103-122 is compact and easy to use. The
MT103-122 is able to transmit any one of the video
sources, such as VGA, Component Video, S-Video
or C-Video and Stereo Audio over the CAT-5/6
cable.
The MT103-122 offers a female 15-pin HD input
with the native Plug & Play compatibility, 4 pin Mini-
Din connector for S-Video and RCA connector for
Composite Video Input. The 3.5mm Stereo Audio
Jack is used for Stereo Audio Input. The female
RJ-45 output provides the output to the Twisted
Pair cables.
The MT103-122 also features a Signal Detect
function that shows when a signal is present and
provides feedback over the RS-232 bus.
The unit also offers hardware Video Equalization
for transmission lengths up to 400 feet. The Video
Equalization works in conjunction with the Video
Equalization on the receiver. The total distance
from source to transmitter to receiver to display is
700 feet at resolutions up to 1024x768.
Additionally, the card may be preset to allow for
either software or hardware control of Video
Equalization. There is also hardware gain control
for the audio output.
TECHNICAL SPECIFICATIONS 3
FEATURES/
DESCRIPTION MT103-122
GENERAL
Inputs Video
YPbPr (RGBHV) 15 PIN HD
S Video 4 PIN MINI DIN
Composite RCA Jack
Input Stereo Audio 3.5mm Stereo Jack
Output RJ-45 Female (1)
Compatibility VGA thru UXGA, Stereo
Audio, C-Video, S-Video
Table 1. MT103-122 General
MECHANICALMT103-122
Enclosure Slots Required 1
Weight (pounds) 1.1lb (0.5kg)
Ship Weight (pounds) 1.6lbs (0.73kg)
T°Operating 10°C-40°C
T°Maximum 50°C
Humidity 90%non-condensing
MTBF (calculations) 40,000 hrs
Table 2. MT103-122 Mechanical
ELECTRICALMT103-122
Input Video Signal
Analog Signal Level 1.2 Vp-p max
Impedance 75 Ohms
Input Sync Signal
HSYNC/VSYNC TTL
Impedance 10 kOhms
Input Audio Signal
Impedance 10 kOhms
Max Level 1 Vp-p
Output Signals
CAT-5/6 Twisted Pair Video/Sync/Audio Signals
Altinex Standard
Power (from enclosure) +6V @ 459mA, 2.7W
-6V @ 137mA, 0.8W
Table 3. MT103-122 Electrical

MULTITASKER™
4
PRODUCT DESCRIPTION 4

MULTITASKER™
5
APPLICATION DIAGRAM 5
DIAGRAM 1: TYPICAL CONFIGURATION

MULTITASKER™
6
DIAGRAM 2RJ-45 PINOUT
Pin Number RJ-45 Output Signals
1Orange/White
2Orange
3Green/White
4Blue
5Blue/White
6Green
7Brown/White
8Brown
Table 1
Standard 568B Wiring Color Code

MULTITASKER™
7
DIAGRAM 3INTERNAL VIEW
MT103-122 CAT-5 Video + Audio Transmitter

MULTITASKER™
8
DIAGRAM 4: DIP SWITCH SETTINGS
AUDIO SYNC PULSE
OSC =INTERNAL 50KHZ SYNC PULSE
Use for YPbPr, S-Video and C-Video
SYNC =HORIZONTAL SYNC PULSE
Use with VGA input.
VIDEO EQUALIZATION (EQ)
HW = HARDWARE EQ.
SW = SOFTWARE EQ.

MULTITASKER™
9
INSTALLING YOUR MT103-122 6
Step 1. Determine the settings required for Audio
Sync and if Equalization will be hardware
or software controlled. If necessary to
change the defaults, see DIAGRAM 4on
page 8.
Step 2. Slide the MT103-122 into an available slot
in the MultiTasker™ Enclosure in order to
connect to the bus. Make sure that the
card fits into place. Secure the card to the
MultiTasker™ by tightening the retainer
screws located on the top and bottom of
the card.
Step 3. Turn the enclosure power on or reset the
enclosure and verify the LED near the top
of the unit is illuminated RED indicating
power is applied.
Step 4. Connect the video source to the
MT103-122, either RGBHV/YPbPr,
S-Video or Composite Video. Verify the
LED turns green if using an RGBHV
signal.
Step 5. Connect the audio source to the AUDIO
INPUT jack.
Step 6. Connect the CAT-5/6 cable from the video
output of the MT103-122 Transmitter to
the CAT-5 Input port on the MT103-123 or
equivalent receiver.
Step 7.Verify the picture quality on the receiving
monitor is equivalent to the quality as
displayed on a local monitor. If the quality
of the image is poor or non-existent, it
may be necessary to adjust the Video
Equalization on the MT103-122 and/or
MT103-123.If hardware controlled, adjust
from the knob on the panel. For software
control, see the OPERATION section that
follows for details on the [EQ] command.
OPERATION 7
7.1 RS-232 CONTROL
When used in the MultiTasker™ Enclosure, the
MT103-122 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 MT103-122, 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.

MULTITASKER™
10
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.
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 MT103-122 card.
Command Format: [VERCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
An MT103-122 card is in slot #2. Send the
command [VERC2], and the MultiTasker™
Enclosure will return the following feedback:
MT103-122 690-0197-001
MT103-122 = card type
690-0197-001 = 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 MT103-122 card in slot #10.
Sending the command [C10] to the
MultiTasker™ will yield the following feedback:
ON, EQ=0 C10
ON = Outputs are ON
EQ=0 = Equalization is set to zero
C10 = The card is in slot 10
If there is no card in slot #10, sending the
command [C10] will not return any feedback.
3. [CnS]
This command saves the card settings and
displays the status. After the system is reset or
powered off and then on, the card restores the
saved settings.
Cn = card number
S= save configuration
Example:
Save the status by sending the command
[C10S]. The feedback returned will be similar to
the following:
ON, EQ=0 C10 Saved
4. [?C]
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)

MULTITASKER™
11
Example:
Send the command [?C10] to receive the
feedback for the MT103-122 in slot #10. Each
status field begins with a '+' and ends with the
card slot number (ex: C10). The feedback will
be similar to the following:
[+MT103-122C10+VR690-0197-001C10
+ON123456C10+EQ0C10+SI0C10]
MT103-122......... Card Type
VR690-0197-001 Firmware version
ON......................Outputs are ON
EQ0....................Equalization is set to zero
SI0......................Signal (SI), 0= no signal
5. [SIG]
This command will test for the presence of an
input signal and return a '1' if a signal is present
and return a '0' if no signal is present.
Command Format: [SIGCnUi]
Cn = Card ID (n = # from 1 to max slots)
Ui = Unit ID (i = from 0 to 9)
Example:
If there is an MT103-122 in slot #10 and there is
a valid CAT5 signal present on the input,
sending the command [SIGC10] will yield the
following feedback:
1
6. [STA]
This command enables or disables automatic
feedback from the front panel. The command
affects any card with auto-feedback capability,
not just the MT103-122. The default at power on
or reset is STA0, OFF.
Command Format [STA1] = ON
Command Format [STA0] = OFF
Feedback Prefix Definitions:
+MT =Card Number
+VR =Firmware Version
+ON =On/Off Control
+EQ =Equalization
+SI =Signal Detect
Example:
Command =[EQ=25C10]
Feedback =+EQ25C10
+EQ =Equalization
25 =Equalization Level
C10 =Card slot number
7. [CLR]
This command clears the card settings and
returns it to the factory default values.
Command Format: [CLRCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
In order to clear the card in slot #10, send the
command [CLRC10].
8. [EQ] and [+] / [-]
This command is used to display the current
Equalization setting, set the video equalization
or to select the Equalization function for
adjustment using the [+] and [-] commands.
DISPLAY THE EQUALIZATION SETTING
Command Format: [EQCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
An MT103-122 card is in slot #10 and the
equalization level is set to zero. Send the
command [EQC10] and receive the following
feedback:
EQ=0

MULTITASKER™
12
SET EQUALIZATION
Command Format: [EQ=mCnUi]
m= Equalization (m=# from 0 to 50)
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
An MT103-122 card is in slot #10. Send the
command [EQ=0C10] to set the equalization to
zero.
ADJUST EQUALIZATION
Command Format: [EQCnUi]
Cn = Card ID (n = slot # from 1 to max slots)
Ui = Unit ID (i = # from 0 to 9)
Example:
An MT103-122 card is in slot #10 and its
equalization is set to zero. Send the commands
below to adjust the Equalization to a value of 15.
1. [EQC10]
The current Equalization level is 10 and will
be displayed after sending this command.
2. [ -] [ -] [ -]
The level is now 7 and is insufficient.
3. [ +] [ +] [ +] [ +] [ +] [ +] [ +] [ +]
The level is now 15 and no further
adjustments are required.
9. […S] – Save
This command will save the configuration
command being sent in memory. When
sending the command [EQ=10C10S], after reset
or power up, the equalization level on C10 will
be set to 10.
10. […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 or if the unit ID is zero.
11. [TEST]
This command performs a series of internal
tests 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 listed.
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 MT103-122 in slot #10. In order to
test the internal memory, send the command
[TESTC10].
12. [HELP]
This command displays information available for
the MultiTasker 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 MT103-122 card in slot #10,
send the command [HELPC10]. The commands
along with a brief description will be displayed in
the Terminal Window.
13. [WR]
This command groups multiple cards in the
Enclosure. Each unit may define a maximum of
eight groups.
In MultiTasker™ 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.

MULTITASKER™
13
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.
The system will return the following feedback:
G1=C1C2C3
14. [CLRG]
This command clears the members for a single
group or for all 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.
NOTE: Since this command is sending the
[CLR] command to its group members,
each card will display its own reset
message.
15. [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:
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.
16. [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:
G1=C1C2C19
Now, clear group 5 by sending the command
[CLMG5U1]. Reread the member data as above
and note the following feedback:
G1=EMPTY -PLEASE RESET THE SYSTEM
WHEN FINISHED

MULTITASKER™
14
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) [SIG] Input signal detect
6) [STA]Enable/disable auto feedback
7) [CLR] Reset card to default values
8) [EQ] Set equalization value
9) […S] Save the command configuration
10) […F] Provides feedback upon sending
11) [TEST] Test memory IC's
12) [HELP] Display available commands
Group Commands
13) [WR] Groups multiple cards
14) [CLRG] Clears group members
15) [RD] Displays group members
16) [CLM] Removes members from group.
7.4 MENU MODE
MENU MODE commands are RS-232 commands
that allow virtually 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 options. 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 MultiTasker™ 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]
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 [CLR]
Setup
Equalization [EQ], [+], [-]
Status [VER], [C]
Help [HELP]
Not Available [?], [CnS], [STA], […S], [...F],
[TEST], [WR], [CLM],
[CLRG] and [RD]
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.

MULTITASKER™
15
5. The system will interrogate the enclosure
and return a list of cards installed and their
slot locations.
Example: 8 (Slot 8): MT103-122
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 MT103-122 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 for access. A sub menu appears 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.
NOTE: The ESCAPE (ESC) key will take
you to the previous menu without making
changes in the current menu.
7.4.4 MT103-122 MENUS
Following are the menus available to the
MT103-122. 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 indicating the current setting or
value of the parameter. In some areas,
additional comments are provided for
clarification.
MT103-122 MAIN MENU
1: CONTROL
2: SETUP
3: STATUS
4: HELP
ESC: GO BACK
MT103-122 EXPANDED MENUS
1. CONTROL:
1: CLEAR
RESET CARD (EQ=0)
1: YES
2: NO
ESC: GO BACK
2. SETUP:
1: SET EQUALIZATION
SET EQUALIZATION: (EQ=3)
1: INCREASE EQ
1: DECREASE EQ
ESC: GO BACK
3: STATUS
Equivalent to the [C] command.
Returns the card status and redisplays the
Main Menu.
4: HELP
Equivalent to the [HELP] command.
Displays a list of commands available for
the MT103-122 along with a brief
description.
ESCReturns to the parent menu.

MULTITASKER™
16
7.4.5 MENU MODE EXAMPLES
All MENU MODE examples assume an
MT103-122 is installed in slot #1. Start by
clicking the mouse in the Terminal window.
Press ENTER and a list of available cards will
be displayed.
NOTE When entering numeric values (not
selecting menu items) the system may
echo each character as it is typed. For
example, entering a delay time of 03
may appear as 0033 on the screen.
1. Increase the equalization.
Follow the keystrokes below to increase the
level of equalization.
Enter List available cards
1Select MT103-122 in slot #1
2Select SETUP Menu
1Select SET EQUALIZATION
1INCREASE EQUALIZATION
Repeat until desired equalization level
is obtained.
ESC Return to SETUP Menu
ESC Return to the MAIN Menu
2. Clear the card.
Starting from the Main Menu, select the
MT103-122 card and set it to the factory
defaults. Follow the keystrokes below.
1Select CONTROL Menu
1Select CLEAR
1Select YES to clear the card
ESC Return to the MAIN Menu
3. Display Card Status
Starting from the Main Menu, follow the
keystrokes below.
3Displays card status
NOTE: The status will be displayed, followed
by the Main Menu being redisplayed.
7.5 ADJUSTMENTS
The MT103-122 requires only two adjustments to
be made for optimal performance. The first is Video
Equalization for long cable lengths. The second is
Audio Gain for volume control of the main (CAT-5)
output.
7.5.1 VIDEO EQUALIZATION
Video Equalization is provided to fine tune the
displayed image on the remote display.
Typically, for short cable runs the equalization
will be set to near minimum. Cable lengths up to
400 feet will require near maximum equalization.
The equalization adjustments on the
MT103-122 and MT103-123 work together to
provide equalization for maximum cable lengths.
For example, for cable runs less than 50 feet,
both equalization settings may be set to
approximately minimum, since on the short
distances no equalization is required. Where as
cable runs of 400 feet will see equalization
settings at about the three-quarter position.
7.5.2 AUDIO GAIN
Normally, the AUDIO GAIN control on the
MT103-122 will be set to maximum. When set to
maximum, the transmitted volume will be
equivalent to the volume from the audio source.
If necessary, the transmitted volume may be
reduced as required by the user.
TROUBLESHOOTING GUIDE 8
We have carefully tested and have found no
problems in the supplied MT103-122. However, we
would like to offer suggestions for the following:
8.1 LED IS NOT RED
Cause 1: There is no power.
Solution: Make sure the enclosure has power
and is turned on. If the LED is still
not on, see Cause 2.

MULTITASKER™
17
Cause 2: The card is not recognized.
Solution: Reset the card cage by sending the
[RES] command, or turning the
system power off and then on again.
Send the [C] command to see if
there is communication with the
card. If there is no feedback, see
Cause 3.
Cause 3: Card is not plugged in all the way.
Solution: Push the card in all the way. Reset
the system and send the [C]
command. If the card is still not
recognized and the LED is not on,
see Cause 4.
Cause 4: Card cage slot has a problem.
Solution 1: Test the card in other slots of the
card cage. If the slot was damaged,
the card may work in other slots. If
other slots work and the card is
recognized, the problem is the card
cage slot. The card cage may
require service. Call ALTINEX at
[phone]. If the other slots do
not work, see Solution 2.
Solution 2: Take any other known good card
and verify that the slot used is good
by seeing if the other car is
recognized in that slot. If it is, then
the original card may be the source
of the problem. Call ALTINEX at
[phone].
8.2 LED IS NOT GREEN (VGA)
Cause 1: There is no power.
Solution: Disconnect the video input from the
MT103-122 and verify the LED is
ON and RED indicating power is
present. Reconnect the computer's
video output. If the LED is still not
GREEN see Cause 2.
Cause 2: There is no Sync signal.
Solution: Verify the computer output is
operating correctly by connecting it
directly to the local monitor. If the
display is good, call ALTINEX at
[phone].
8.3 NO DISPLAY
Cause 1: The source has a problem.
Solution: Check the source and make sure
that there is a signal present and all
source connections are correct. If
the source is working and there is
still no display, see Cause 2.
Cause 2: Cable connections are incorrect.
Solution: Make sure that cables are properly
connected. Also, make sure that the
continuity and wiring are good. If
there is still no display present, see
Cause 3.
Cause 3: There is no input signal.
Solution: Verify the card is receiving a valid
signal at the input using the Signal
Detect command, [SIG]. See
RS-232 accessible commands in
Section 7. If no signal is detected,
see Solution 2. If a signal is
detected, see Cause 4.
Cause 4: Equalization is set too high.
Solution: Make sure the equalization is set to
minimum to start. If controlling the
equalization using the built-in
potentiometer, verify the EQ switch
on the board is set to HW. See
DIAGRAM 4for details.
Cause 5: The display has a problem.
Solution: Make sure that the display has
power and is turned ON. If there is
still no display, call ALTINEX at
[phone].

MULTITASKER™
18
8.4 REMOTE IMAGE QUALITY IS POOR
Cause 1: The source has a problem.
Solution: Check the image on the local
monitor and verify the quality is
good. If the local image is good, see
Cause 2.
Cause 2: Video equalization required.
Solution: Adjust the VIDEO EQUALIZATION
on the MT103-122. Long cable runs
may require adjustment on both the
MT103-122 and the receiver. If the
image is still not correct, call
ALTINEX at [phone].
8.5 NO SOUND
Cause 1: The source has a problem.
Solution: Check the source and make sure
that there is a signal present and all
source connections are correct. If
the source is working and there is
still no sound, see Cause 2.
Cause 2: The volume is too low.
Solution: Increase the AUDIO GAIN toward
maximum. If there is still no sound
present, see Cause 3.
Cause 3: Cable connections are incorrect.
Solution: Make sure that cables are properly
connected. Also, make sure that the
continuity and wiring are good. If
there is still no sound, see Cause 4.
Cause 4: The receiving device has a
problem.
Solution: Make sure the receiving device has
power and is turned ON. If there is
still no sound, please call Altinex at
[phone].
ALTINEX POLICY 9
9.1 LIMITED WARRANTY/RETURN POLICY
Please see the Altinex website at
www.altinex.com for details on warranty and
return policy.
9.2 CONTACT INFORMATION
ALTINEX, INC
592 Apollo street
Brea, CA 92821 USA
TEL: [phone]
TOLL FREE: 1-800-ALTINEX
WEB: www.altinex.com
E-MAIL: [email protected]