Altium SCA51D User manual

SCA51D
Compact Scaler Switcher
All Rights Reserved
Version: SCA51D_2016V1.1
User Manual

Compact Scaler Switcher
Altimium www.altimium.com
Preface
Read this user manual carefully before using this product. Pictures shown in this manual
is for reference only, different model and specifications are subject to real product.
This manual is only for operation instruction only, not for any maintenance usage. The
functions described in this version are updated till December 2016. Any changes of
functions and parameters since then will be informed separately. Please refer to the
dealers for the latest details.
All product function is valid till 2016-12-2.
Trademarks
Product model and its logo are trademarks. Any other trademarks mentioned in this
manual are acknowledged as the properties of the trademark owner. No part of this
publication may be copied or reproduced without prior written consent.
FCC Statement
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. It has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a commercial
installation.
Operation of this equipment in a residential area is likely to cause interference, in which
case the user at their own expense will be required to take whatever measures may be
necessary to correct the interference
Any changes or modifications not expressly approved by the manufacture would void
the user’s authority to operate the equipment.

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SAFETY PRECAUTIONS
To insure the best from the product, please read all instructions carefully before using
the device. Save this manual for further reference.
Unpack the equipment carefully and save the original box and packing material for
possible future shipment
Follow basic safety precautions to reduce the risk of fire, electrical shock and injury
to persons.
Do not dismantle the housing or modify the module. It may result in electrical shock
or burn.
Using supplies or parts not meeting the products’ specifications may cause damage,
deterioration or malfunction.
Refer all servicing to qualified service personnel.
To prevent fire or shock hazard, do not expose the unit to rain, moisture or install this
product near water.
Do not put any heavy items on the extension cable in case of extrusion.
Do not remove the housing of the device as opening or removing housing may
expose you to dangerous voltage or other hazards.
Install the device in a place with fine ventilation to avoid damage caused by
overheat.
Keep the module away from liquids.
Spillage into the housing may result in fire, electrical shock, or equipment damage. If
an object or liquid falls or spills on to the housing, unplug the module immediately.
Do not twist or pull by force ends of the optical cable. It can cause malfunction.
Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to
the device before cleaning.
Unplug the power cord when left unused for a long period of time.
Information on disposal for scrapped devices: do not burn or mix with general
household waste, please treat them as normal electrical wastes.

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Table of Contents
1. Introduction.................................................................................................................1
1.1 Introduction to SCA51D.....................................................................................1
1.2 Features ............................................................................................................1
1.3 Package Contents.............................................................................................1
2. Product Appearance ...................................................................................................3
2.1 Front Panel........................................................................................................3
2.2 Rear Panel.........................................................................................................4
3. System Connection.....................................................................................................6
3.1 Usage Precautions............................................................................................6
3.2 System Diagram................................................................................................6
3.3 Connection Procedure.......................................................................................6
3.4 Connection of Microphone.................................................................................7
3.5 Application.........................................................................................................9
4. System Operations ...................................................................................................10
4.1 Operations of Buttons......................................................................................10
4.1.1 Resolution Adjusting..............................................................................10
4.1.2 Switching Operations.............................................................................10
4.1.3 Software Updating.................................................................................11
4.1.4 Volume Adjusting...................................................................................11
4.1.5 Operations in OSD Menus.....................................................................11
4.2 Operations of IR ..............................................................................................12
4.2.1 IR Remote .............................................................................................12
4.3 Operations of CEC Function............................................................................13
4.4 Operations of RS232 Control...........................................................................14
4.4.1 Installation/ uninstallation of RS232 Control Software...........................14
4.4.2 Basic Settings........................................................................................14
4.4.3 RS232 Communication Commands ......................................................16
4.5 Operations in OSD Menu.................................................................................22
4.5.1 Option....................................................................................................22
4.5.2 Picture ...................................................................................................24

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4.5.3 Sound....................................................................................................25
4.5.4 Setup.....................................................................................................25
4.6 Instructions of VGA Converting Cable.............................................................26
5. Specification .............................................................................................................28
6. Panel Drawing ..........................................................................................................30
7. Troubleshooting & Maintenance ...............................................................................31
8. After-sales Service....................................................................................................33

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1. Introduction
1.1 Introduction to SCA51D
SCA51D is a compact mini scaler switcher with 5 video inputs (3 HDMI, 2 VGA) and 6
audio inputs (3 HDMI audio & 2 VGAaudio: switched following the video; 1 MIC audio
input). As the VGA input supports VGA, YPbPr and C-video, so the scaler switcher is
compliant with multiple video signals.
SCA51D scales & switches any video signal to HDMI output. SCA51D supports various
control methods including front panel control, IR control and RS232 command control.
1.2 Features
Compliant with HDCP.
Supports CEC, with commands to enable/disable this function.
Supports video source auto-switching function.
Output resolutions selectable to assure preferred output, and supports various
output resolutions, such as 1920x1200, 1920x1080, 1600x1200, 1360x768,
1280x800, 1280x720, 1024x768.
VGA video supports C-video, YPbPr and VGA.
Supports online software upgrading.
48V phantom power to support condenser microphone.
MIC port supports balance/unbalance signal, suppress the external noise effectively.
3-level MIC inputs, supports condenser microphone, dynamic microphone and
wireless microphone.
Controllable via button, IR & RS232.
Powerful OSD operations.
1.3 Package Contents
1 x SCA51D
2 x Mounting ears (separate from SCA51D)
8 x Screws (for mounting ears)
7 x Captive screw connectors
2 x VGA to YPbPr cables
1 x IR receiver
1 x RS232 cable
4 x Plastic cushions

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1 x Power Adapter (DC 12V)
1 x IR remote
1 x Warranty Card
1 x Conformity Certificate
1 x User Manual
Notes：Please confirm if the product and the accessories are all included, if not, please
contact with the dealers.

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2. Product Appearance
2.1 Front Panel
①Power indicator
Turn red when power on, turn green when in standby mode.
②LCD screen
Show the real-time system working status.
③SOURCE/AUTO
Use as video source selection button, press to select one source, press again to
select next source, switching circularly between HDMI1, HDMI2, HDMI3, VGA1
and VGA2. The LCD screen will show the name of selected source.
Use as switching mode selection button, press and hold on for 7 seconds or
more to enter in Auto-switching mode, press and hold on for 7 seconds or more
again to enter in Manual-switching mode.
Note: Setting any VGA port to AV or YPbPr in Manual-switching mode, the system will
not be able to enter in Auto-switching mode. While in Auto-switching mode, setting any
VGA port to AV or YPbPr will force the system to enter in Manual-switching mode with
LCD screen and RS232 control software prompting “Not support!”
④ENTER
Press to confirm selection in menu.
⑤RESO/AUTO
Manual-switching mode: Press this button to select the resolution of HDMI output
manually. The resolution can be selected among 1360x768, 1280x800,
1280x720, 1024x768, 1920x1200, 1920x1080 and 1600x1200.
Auto-switching mode: Press and hold this button for 7 seconds or more to enter
this mode. This Scalar Switcher will automatically select the highest resolution of
HDMI display device.
Press and hold for 7 seconds or more again can back to Manual-switching mode.
① ② ③ ④
⑤ ⑥ ⑦ ⑧⑨
⑩

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⑥MENU/FWUPDATE
Use as menu button, press it to enter in OSD menu.
Use as software updating button, press and hold on for 7 seconds or more to
enter in software updating procedure.
⑦VOL-
Volume down button, press it to turn down the volume.
Use as direction button NEXT when in menus.
⑧MIC+
MIC volume up button, press it to turn up the volume of the microphone
Use as direction button MOVE UP when in menus.
⑨VOL+
Volume up button, press it to turn up the volume
Use as direction button PREVIOUS when in menus.
⑩MIC-
MIC volume down button, press it to turn down the volume of the microphone
Use as direction button MOVE DOWN when in menus.
2.2 Rear Panel
①AUDIO INPUT
Including 3 HDMI audio & 2 VGA audio inputs corresponding to the 5 video inputs,
users can choose any one audio (embedded HDMI audio or external input audio) for
HDMI audio input by sending RS232 commands.
②AUDIO OUTPUT
1 Audio output port, connect with an amplifier. The audio comes from the input audio
corresponding to the selected video source and mixed with MIC audio.
⑧ ⑨
ab
⑦
① ② ③ ④ ⑤ ⑥

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③IR EYE
Connect with an IR receiver to receive IR signal sent by the IR remote.
④FIRMWARE
USB port, connect with USB flash disk or other storage with update file to update the
system firmware.
⑤RS232
Serial control port, 3p captive screw connector, connect with a control device (such
as a computer) to control SCA51D.
⑥12V DC
Power port, connect with the 12V DC power adapter.
⑦MIC
a) MIC port, connect with microphone
b) MIC Dial switch: 3 levels: 48V phantom power mode (connect with condenser
microphone), MIC mode (connect with dynamic microphone) and LINE mode
(connect with wireless microphone or line audio).
⑧VIDEO INPUT
Video input ports, includes 3 HDMI inputs & 2 VGAinputs. VGAports support YPbPr,
C-video and VGA format. Factory default is VGA format.
⑨OUTPUT
1 HDMI local output, connect with a HDMI displayer.

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3. System Connection
3.1 Usage Precautions
1) System should be installed in a clean environment and has a prop temperature and
humidity.
2) All of the power switches, plugs, sockets and power cords should be insulated and
safe.
3) All devices should be connected before power on.
3.2 System Diagram
3.3 Connection Procedure
Step1.Connect HDMI source devices (e.g. Blue-ray DVD) to HDMI input ports of
SCA51D with HDMI cable. Connect VGAsource devices (e.g. PC) to VGA input
ports of SCA51D with VGA cable.
Step2.Connect the corresponding audio source to the corresponding AUDIO INPUT
port of SCA51D with audio cable accordingly. The audio of HDMI can be set as
embedded or external by sending right commands.
Step3.Connect a HDMI display device to HDMI output port of SCA51D with HDMI
cable.
Step4.Connect speakers, headphones or amplifiers to AUDIO OUTPUT port of
SCA51D.
Step5.Connect control device (e.g. PC) to the RS232 port of SCA51D.
Step6.Select MIC level and connect right microphone to the MIC input port. MIC audio
will be transmitted to AUDIO OUTPUT port and mixed with source audio.
Step7.Connect DC12V power adaptor to the power port.
DVD
Rs232
control panel
PC
HDTV
DV Camera
PC
Laptop
MIC
Projector

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3.4 Connection of Microphone
SCA51D provides one 3-level microphone input to accommodate different microphone
input modes, including 48V phantom power mode, MIC mode & LINE mode.
48V phantom power input
When switch to “48V” (It has a good frequency characteristic, high input impedance and
high sensitivity in this mode), the MIC input will offer a 48V phantom power. This is only
used for condenser microphone.
Connect the microphone this way: “+” connects to positive, “-” connects to negative and
“ ” to ground.
MIC input
When switch to “MIC” (It has a low frequency characteristics, and wide frequency
response in this mode), the microphone input is used for connecting with dynamic
microphone. There are two different connections:
1) Unbalanced connection:
“+” and “ ” connect to ground, and “-” connects to signal.
“-”and “ ” connect to ground, and “+” connects to signal.
2) Balanced connection:
“+” connects to positive, “-” connects to negative and “ ” connects to ground.

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LINE input
When switch to “LINE” (It has a low frequency characteristics, and wide frequency
response in this mode), the microphone input is used for connecting with line audio or
wireless microphone output. There are two different connections:
1) Unbalanced connection:
“+” and “ ” connect to ground, and “-” connects to signal.
“-”and “ ” connect to ground, and “+” connects to signal.
b) Balanced connection:
“+” connects to positive, “-” connects to negative and “ ” connects to ground.

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3.5 Application
SCA51D has a good application in various occasions, such as computer realm,
monitoring, conference room, big screen displaying, television education, command &
control center and smart house etc.

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4. System Operations
4.1 Operations of Buttons
The buttons can be used for output resolution adjusting, switching operations, software
updating, volume adjusting and operations in menus.
4.1.1 Resolution Adjusting
Support auto-adjusting and manual-adjusting. Press and hold on RESO/AUTO button
for 7 seconds or more to enter in auto-adjusting/manual-adjusting mode.
Notice:
1. In auto-adjusting mode, SCA51D will choose the resolution of the display device as
the preferred resolution.
2. In auto-switching mode, front panel button control is not available, but IR and RS232
control is able to switch modes.
4.1.2 Switching Operations
Support auto-switching and manual-switching. Press and hold on SOURCE/AUTO
button for 7 seconds or more to enter in auto-switching/manual-switching mode.
The display result is showed as below:
The display result will be showed for 2 seconds.
The auto-switching mode follows the listed principles:
New input principle
Once detecting a new input signal, SCA51D would switch to this new signal
automatically.
Power rebooting principle
SCA51D offers the function to remember the signal last displayed when rebooting.
Once rebooting, SCA51D will automatically enter in auto-switching mode, and then
detect all inputs and memorize their connection status for future rebooting using.
And if the signal last displayed is still available, then SCA51D will output the signal. If
not, there will be no signal on outputs.
Signal removing principle
Once removing the current display signal, SCA51D will detect all input signals with
IN: HDMI1 AUTO
1280 X 720
IN: HDMI1 MANUAL
1280 X 720
Auto-switching function

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priority (from INPUT 1 to INPUT 5). It will output the signal firstly detected to be
available.
Notice: Auto-switching function works only when there is new input signal, or when
users remove a signal or power rebooting. With any VGA port set to AV or YPbPr, the
system will be not able to enter in Auto-switching mode.
Operation Examples:
Connect the INPUT 2, INPUT 4, and INPUT 5 ports to the source devices, select
INPUT 4 to outputs.
Press and hold on the front key SOURCE/AUTO for 7 seconds or more to enter in
auto-switching mode.
With no signal removing or new input, SCA51D just works in auto-switching mode,
and take no action (Output from INPUT 4)
Connect INPUT 3 with a source device, and then it will choose INPUT 3 to output.
Remove the signal of INPUT 3, SCA51D will detect from INPUT 1 to INPUT 5. And
when it detects that input 2 is available, it will choose INPUT 2 to output.
Cut off the power of SCA51D, then reboot. As SCA51D is in auto-switching mode,
then it will choose INPUT 2 to output.
4.1.3 Software Updating
Software updating means to update the inside program of this scaler switcher.
SCA51D supports software updating via USB flash disk. The Operation is:
1) Copy the file “MERGE_51D.bin” to the root directory of a USB flash disk. (Make sure
the file is copied to the root directory for normal use.
2) Plug the USB flash disk to the SCA51D USB port on its front panel.
3) Press the button “MENU” for 7 seconds or more to update the software
automatically.
Or press this button for 1 second to open the OSD menu “Option”Select
“Software Update” to enter in update procedure.
Or send command 50698%to update software.
4.1.4 Volume Adjusting
Not in OSD menu, press VOL -- to decrease line volume, VOL + to increase.
Not in OSD menu, press MIC –to decrease MIC volume, MIC + to increase.
4.1.5 Operations in OSD Menus
Press MENU button to enter in the OSD menu, and use UP, DWON, LEFT, RIGHT

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button to select, press ENTER button to confirm selection. MENU button also can be
used to exit present menu level by level until exiting the OSD menu.
4.2 Operations of IR
4.2.1 IR Remote
With its CEC function, users are able to control the SCA51D and source devices
synchronously via one IR remote.
①Standby button
To enter in/ exit standby mode.
②Input channel selection buttons
INPUT 1 is for HDMI1, INPUT 2 for
HDMI2…INPUT 5 for VGA2. AUTO button:
Enable/disable auto-switching mode.
③Volume adjusting buttons
MIC-/+: decrease/increase MIC volume
LINE-/+: decrease/increase line volume
MIC MUTE: mute/unmute MIC audio
LINE MUTE: mute/unmute line audio
④Menu operation buttons
MENU: press to enter in OSD menu or used to
return to previous menu. EXIT: exit OSD menu.
OK: confirm button. Navigation buttons:
UP/DWON/LEFT/ RIGHT button, for value setting
or page-turn, Buttons in area a are also able to
work in CEC mode to enter the menu of HDMI
source device. P.P, ZOOM, S.M: shortcut button,
to select display mode.
⑤Resolution selection buttons
Select the resolution by pressing corresponding
button. AUTO is for auto-selecting the best
resolution.
⑥CEC function buttons
These are for HDMI input signal which supports
CEC. Include PLAY, PAUSE, STOP, MENU, REV
(reverse) and FWD (forward).
Buttons in section a work when entered CEC too.

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4.3 Operations of CEC Function
SCA51D supports CEC and CEC standby functions, and can be enabled/ disabled
through RS232 commands or OSD menu. If the HDMI source device supports CEC and
its CEC is on, and when SCA51D enter in standby/startup mode, then source device will
automatically enter in standby/startup mode.
And due to CEC function, user can control HDMI source device with basic operations
(play, pause, fast forward, fast reverse, menu etc.). So user is able to control SCA51D
and HDMI source device via the IR remote of SCA51D.
Commands for CEC function: “50686%”(enable CEC) and “50687%”(disable CEC).
The working status related to CEC and STANDBY is showed as below:
Situation
Working Status
CEC: on, Standby: on
Press STANDBY button on IR remote, SCA51D enters in
standby mode, so do all HDMI source devices.
Press STANDBY button again on IR remote, SCA51D exits
standby mode, only the HDMI source device switched to
starts working.
CEC: on, Standby: off
Press STANDBY button on IR remote, SCA51D enters in
standby mode, HDMI 1~3 source devices keep on.
CEC: on
Use CEC function buttons, ▲,▼, , and OK buttons on
IR remote to control HDMI source devices, include play,
pause, fast forward, fast reverse and operations in menu.
CEC: off
Unable to control HDMI source devices through IR remote
CEC: Control HDMI source devices by IR remote

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4.4 Operations of RS232 Control
SCA51D can be controlled by sending RS232 commands. Connect the RS232 port of
SCA51D and the RS232 port of control device (e.g. a PC). Install the RS232 control
software to the control device, then users are able to control the SCA51D by sending
RS232 commands. Here is a operation guidance for RS232 control.
4.4.1 Installation/ uninstallation of RS232 Control Software
Installation Copy the control software file to the computer connected with SCA51D.
Uninstallation Delete all the control software files in corresponding file path.
4.4.2 Basic Settings
First to connect SCA51D with all input devices and output devices needed, then to
connect it with a computer which is installed with RS232 control software. Double-click
the software icon to run this software.
Here we take the software CommWatch.exe as example. The icon is showed as below:
The interface of the control software is showed as below:

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Please set the parameters of COM number, bound rate, data bit, stop bit and the parity
bit correctly, and then you are able to send commands in Command Sending Area.
Parameter Configuration area
Monitoring area, indicates
whether the command sent
works.
Command Sending area