SY Electronics SY-MS51 User manual

SY-MS51 / SY-MS51-AP
SY Electronics Ltd, 7 Worrall Street, Salford, Greater Manchester, M5 4TH, United Kingdom
Tel: [phone] – Fax: [phone] – www.sy.co.uk
Installation Guide
SY-MS51
and
SY-MS51-AP
Scaling Presentation Switcher
3 HDMI, 2 VGA (RGBHV, YPbPr or Composite Video) inputs –
Simultaneous HDMI & HDBT outputs

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The SY-MS51 and SY-MS51-AP are 5 input scaling Presentation video switchers with 3 HDMI inputs and 2
VGA inputs. The SY-MS51 provides a local HDMI output whilst the SY-MS51-AP provides both a local HDMI
output and a PoC HDBT output. These switchers can scale the output to one of seven selectable
resolutions allowing the video output to match virtually any display device. The switcher can also be
controlled manually from the front panel or from the included IR remote controller or through the RS232
interface.
Features
3 HDMI video inputs
2 VGA video inputs
One HDMI video output
One HDBT PoC output, up to 70m (SY-MS51-AP only)
Manual switching from front panel or remote RS232 key pad
RS232 control to or from the remote location (SY-MS51-AP only)
Auto input selection mode
IR remote control for video switching
RS232 control for video switching
HDMI 1.3 compatible with HDCP and CEC
Connectors and Controls
Front
Name
Description
Power LED
Unit powered
System Monitor
LCD display for operational mode and menu options
Resolution
Press to change the displayed output resolution
Press and hold for more than 8 seconds to select Manual or Auto Resolution modes
Source
Press to select the next available input
Press and hold for more than 8 seconds to select Manual or Auto Switching modes
Menu
Press to activate the on-screen menu
Press and hold for more than 8 seconds to enable the firmware update procedure
Enter
Used in menu mode to make a selection
/ Mic+
Increase the mic / line volume -up direction button in menu mode
/ Mic-
Decrease the mic / line volume -down direction button in menu mode
/ Vol+
Increase the audio output volume - left direction button in menu mode
/ Vol-
Decrease the audio output volume -right direction button in menu mode

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Rear
The following connectors are available on both the SY-MS51 and the SY-MS51-AP
Name
Description
Audio Inputs
Audio inputs
Audio Output
Audio output from selected input signal
Mic
Microphone or Line input
Mic selection switch
Select 48V phantom power mic, unpowered mic or line level mode
Video Inputs
3 HDMI inputs and 2 VGA inputs
HDMI Output
HDMI output for local display device
Service
USB port for firmware updates only
RS232
RS232 port for local control commands and remote control commands
+12V
+12V DC input –centre positive
The following connectors are only available on the SY-MS51-AP:
HDBT PoC
HDBT output for remote display
IR Out
Outputs for IR emitters located close to the image source devices
IR In
Input from IR sensor for controlling image sources
The HDBT output also provides power for the remote SY-HDBT-70PR receiver (PoC). This HDBT receiver
also has an IR sensor that can pass IR control commands to the IR outputs on the SY-MS51-AP Scaler
switcher.
Figure 1 - SY-MS51 Rear Panel
Figure 2 - SY-MS51-AP Rear Panel

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Using the HDMI Video Switcher
Connect up to 3 HDMI video sources to the HDMI INPUT connectors and up to 2 VGA sources to the VGA
connectors. Connect an HDMI cable from the HDMI output to an HDMI display device. The HDBT-PoC
output from SY-MS51-AP provides additional simultaneous HDMI signal to a remote display as far as 70m
using the SY-HDBT-70PR receiver (cat6 cabling).
Whenever the SY-MS51 or SY-MS51-AP is powered up, it will restart in the last state it had before being
switched off.
Manual Selection Mode
To use Manual selection mode, the System Monitor LCD must be displaying MANUAL after the current
input selection. If the System Monitor is displaying AUTO, then press and hold the SOURCE button for
more than 8 seconds to turn off the Auto mode before making manual selections. Manual selection are
made by briefly pressing the SOURCE button until the desired input is selected.
The selection sequence is: HDMI 1, HDMI 2, HDMI 3, VGA1 then VGA2.
Manual input selection can also be done by using the IR remote control or by sending the respective RS232
selection command detailed in RS232 Control Commands below.
Auto Selection Mode
The SY-MS51 / SY-MS51-AP has an automatic input selection mode. The auto selection mode ensures that
there will be an image shown on the HDMI display device whenever an input source cable is removed,
provided that there is still at least one functioning HDMI or VGA input signal still connected.
To enable the auto selection mode, press the SOURCE button for more than 8 seconds, until the System
Monitor text changes from MANUAL to AUTO. In this mode the SY-MS51 / SY-MS51-AP behave in the
following manner:
1. It will automatically select to the next highest available input whenever the currently selected
input source stops providing a signal.
2. When a new signal appears at any input, that input is automatically selected.
3. If the signal for a non-selected input is stopped, the unit will switch to the first lowest
numbered input that has a valid signal.
Manual selection in not possible while the System Monitor LCD is displaying AUTO. To return to manual
switching mode you must press the SOURCE button for more than 8 seconds until the System Monitor LCD
changes from AUTO to MANUAL.
Auto selection can also be activated by using the AUTO button in the INPUT SOURCE section of the IR
remote control or by sending the RS232 selection command detailed in RS232 Control Commands below.
Auto Resolution Mode
Pressing the Resolution button for more than 8 seconds instructs the SY-MS51 or SY-MS51-AP to read the
EDID information from the remote display, if present, or from the local display if there is no remote
display. If the display has a compatible default timing resolution that matches one of the MS51 resolutions
then that will be the output resolution chosen, otherwise the output resolution remains unchanged.
In manual mode the output resolution is set by briefly pressing the Resolution button repeatedly until the
desired output resolution is displayed on the System Monitor LCD.

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IR Remote Control
The SY-MS51 and the SY-MS51-AP is supplied with a remote control key pad that allows the operator to
change the input selection provided that there is a direct line of sight to the IR detector that is connected
to the IR IN connector on the back of the SY-MS51 or the SY-MS51-AP unit. Simply make your selection
from the IR remote key pad.
Mic / Line Input Mode Selection
The SY-MS51 and SY-MS51-AP both have a Mic / Line input connector that can be used for balanced or
unbalanced audio signals. Be sure to set the mode switch correctly for the intended signal source.
48V should only be used for phantom powered condenser type microphones
Mic should be used for dynamic or self-powered condenser microphones
Line should be used for line level signals
For unbalanced signal sources, connect the unused input terminal to the central ground terminal.
RS232 Control Location
The SY-MS51 can only be controlled from its location, whereas the SY-MS51-AP can be controlled using
RS232 commands from either the location where the switcher is located, or from the location where the
SY-HDBT-70PR receiver is located. Three RS232 control modes are available for controlling the SY-MS51-
AP. Note that transmission of RS232 commands through the SY-HDBT-70PR is only possible when using the
SY-MS51-AP switcher.
1. Local RS232 control with no control of a third-party device at the remote location, connected to
the SY-HDBT-70PR.
2. Local RS232 control with RS232 control of a third-party device at the remote location,
connected to the SY-HDBT-70PR.
3. RS232 control of the SY-MS51-AP from the remote location via the SY-HDBT-70PR.
Configuring for Local RS232 Control
Without RS232 Control of a Third-Party Device
The diagram below shows the RS232 connection for local control of the SY-MS51 or SY-MS51-AP. This
configuration does not allow the transmission of RS232 commands to a remote device.

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1. Connect the RS232 controller to the RS232 connector on the SY-MS51 or SY-MS51-AP.
2. Send the RS232 command 50788% to the SY-MS51 or SY-MS51-AP.
3. Send RS232 commands to control the swither (see the RS232 Control Commands section).
With RS232 Control of a Third-Party Device
The diagram below shows the RS232 connection for local control of the SY-MS51-AP. This configuration
also allows the transmission of RS232 commands to a remote device (the HDMI display device in this
example) connected to the SY-HDBT-70PR. This RS232 configuration is the factory default setting for the
SY-MS51-AP.
1. Connect the RS232 controller to the RS232 connector on the SY-MS51-AP.
2. Send the RS232 command 50787% to the SY-MS51-AP.
3. Send RS232 commands to control the swither –see the RS232 Control Commands section.
Configuring for Remote RS232 Control
The diagram below shows the RS232 connection for control of the SY-MS51-AP from a remote location.
This configuration does not allow the transmission of RS232 commands to a remote device.

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1. Connect the RS232 controller to the RS232 connector on the SY-HDBT-70PR connected to the
SY-MS51-AP.
2. Send the RS232 command 50788% to the SY-HDBT-70PR.
3. Send RS232 commands to control the swither –see the RS232 Control Commands section.
RS232 Control Commands
The following RS232 commands provide control of the SY-MS51 / SY-MS51-AP from a PC, laptop or
programmable control panel. The RS232 settings are: 9600 baud, 8 bits, no parity, and 1 stop bit.
Action
Command
Response
Input Selection
Select input HDMI 1
50701%
switch[spc]to[spc]hdmi1[spc][cr][lf]
Select input HDMI 2
50702%
switch[spc]to[spc]hdmi2[spc][cr][lf]
Select input HDMI 3
50703%
switch[spc]to[spc]hdmi3[spc][cr][lf]
Select input VGA 1
50704%
switch[spc]to[spc]vga1[spc][cr][lf]
Select input VGA 2
50705%
switch[spc]to[spc]vga2[spc][cr][lf]

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Action
Command
Response
Enable Auto Selection
Mode
50785%
Open[spc]Source[spc]Auto[spc][cr][lf]
HDMI Audio and HDCP Options
Enable HDMI
embedded audio
output
50648%
Digital[spc]Sound[spc]Output:
[spc]Enable[spc][cr][lf]
Disable HDMI
embedded audio
output
50649%
Digital[spc]Sound[spc]Output:
[spc]Disable[spc][cr][lf]
Use HDMI 1
Embedded Audio
50706%
HDMI1[spc]AUDIO[spc][cr][lf]
Use External Audio 1
input
50707%
LINE1[spc]AUDIO[spc][cr][lf]
Use HDMI 2
Embedded Audio
50708%
HDMI2[spc]AUDIO[spc][cr][lf]
Use External Audio 2
input
50709%
LINE2[spc]AUDIO[spc][cr][lf]
Use HDMI 3
Embedded Audio
50710%
HDMI3[spc]AUDIO[spc][cr][lf]
Use External Audio 3
input
50711%
LINE3[spc]AUDIO[spc][cr][lf]
Enable HDCP
50793%
HDMI[spc]OUT[spc]HDCP[spc]On[spc][cr][lf]
Disable HDCP
50794%
HDMI[spc]OUT[spc]HDCP[spc]Off[spc][cr][lf]
Output Resolution
Set output resolution
to 1360x768 HD
50619%
Resolution:1360*768[spc][cr][lf]
Set output resolution
to 1920x1200 WUXGA
50620%
Resolution:1920*1200[spc][cr][lf]
Set output resolution
to 1600x1200 UXGA
50621%
Resolution:1600*1200[spc][cr][lf]
Set output resolution
to 1024x768 XGA
50626%
Resolution:1024*768[spc][cr][lf]
Set output resolution
to 1280x720 720P
50627%
Resolution:1280*720[spc][cr][lf]
Set output resolution
to 1280x800 WXGA
50628%
Resolution:1280*800[spc][cr][lf]
Set output resolution
to 1920x1080 HD
50629%
Resolution:1360*768[spc][cr][lf]
Use Auto Resolution
50782%
See below for the full response text.
RS232 Control Location
Control SY-MS51 from
local RS232 controller
50787%
Pc[spc]control[spc]far[spc]end[spc][cr][lf]
Control SY-MS51 from
both local and remote
RS232 controllers
50788%
Far[spc]end[spc]control[spc]51T[spc][cr][lf]

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Action
Command
Response
Audio Control Commands
Mute Line & Mic audio
50720%
LINE[spc]Mute[spc]On[spc][cr][lf]
MIC[spc]Mute[spc]On[spc][cr][lf]
Unmute Line & Mic
audio
50721%
LINE[spc]Mute[spc]Off[spc][cr][lf]
MIC[spc]Mute[spc]Off[spc][cr][lf]
Mute Mic audio
50722%
LINE[spc]Mute[spc]On[spc][cr][lf]
Unmute Mic audio
50723%
LINE[spc]Mute[spc]Off[spc][cr][lf]
Mute Line audio
50600%
LINE[spc]Mute[spc]On[spc][cr][lf]
Unmute Line audio
50601%
LINE[spc]Mute[spc]Off[spc][cr][lf]
Increase Mic volume
50724%
MicVolume[spc]++[spc][cr][lf]
Decrease Mic volume
50725%
MicVolume[spc]--[spc][cr][lf]
Set Mic Volume to XX
(Range from 00 to 60)
508XX%
MIC[spc]Volume:[spc]XX[spc][cr][lf]
Increase Line volume
50602%
LINE[spc]Volume:[spc]XX[spc][cr][lf]
Decrease Line volume
50603%
LINE[spc]Volume:[spc]XX[spc][cr][lf]
Set Line volume to XX
(Range from 00 to 60)
501XX%
LINE[spc]Volume:[spc]XX[spc][cr][lf]
CEC Commands
Enable CEC
50686%
Enable[spc]HDMI[spc]CEC[cr][lf]
Disable CEC
50687%
Disable[spc]HDMI[spc]CEC[cr][lf]
Play & Pause
50901%
CEC[spc]cmd:[spc]play&pause[cr][lf]
Stop
50902%
CEC[spc]cmd:[spc]stop[cr][lf]
Menu
50903%
CEC[spc]cmd:[spc]menu[cr][lf]
Rewind
50904%
CEC[spc]cmd:[spc]rev[cr][lf]
Fast Forward
50905%
CEC[spc]cmd:[spc]fwd[cr][lf]
Up
50906%
CEC[spc]cmd:[spc]up[cr][lf]
Down
50907%
CEC[spc]cmd:[spc]down[cr][lf]
Left
50908%
CEC[spc]cmd:[spc]left[cr][lf]
Right
50909%
CEC[spc]cmd:[spc]right[cr][lf]
Confirm command
50910%
CEC[spc]cmd:[spc]select[cr][lf]
Exit command
50911%
CEC[spc]cmd:[spc]exit[cr][lf]
EDID Commands
Restore default EDID
50767%
EDID:[sp]initial[cr][lf]
Bypass EDID (from
output to selected
input)
50768%
EDID:[sp]bypass[cr][lf]
Upload custom EDID
50769%
Please[sp]send[sp]edid[sp]data[sp]within[sp]10
secs![cr][lf]

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Action
Command
Response
Return EDID status
50770%
One of the following:
EDID:[sp]inital[cr][lf]
EDID:[sp]bypass[cr][lf]
EDID:[sp]user[cr][lf]
Standby commands
Go to standby mode
50797%
Go[sp]to[sp]standby![cr][lf]
Wake up from standby
50697%
Wake[sp]up![cr][lf]
Notes:
1. The actual response will always reflect the true response to the RS232 command.
2. Auto Selection mode is automatically disabled when a manual selection command is sent.
3. The [spc], [cr] and [lf] represent the single ASCII character value for the ‘space’,
‘carriage return’and ‘line feed’respectively.
4. This list only details the most commonly used commands, for a complete set of RS232 please
visit www.sy.co.uk and download the following document: Complete RS232 Command List for
SY-MS51 and SY-MS51-AP.pdf.
5. The full response message to the Auto Resolution command is as follows:
modify[spc]input[spc]hdmi[spc]prefered[spc]timing[cr][lf]
rotarySwitch==57[cr][lf]
Manage[spc]HDMI[spc]input[spc]with[spc]prefered[spc]timing[cr][lf]
timing[spc]table=[1][cr][lf]
Resolution:[spc][h]x[v][cr][lf]
Where [h] and [v] represent the chosen horizontal and vertical resolution values.
Specifications
General
HDMI Resolutions
480i, 480p, 720i, 720p, 1080i, 1080p, 1920 x 1200
HDMI Standard
HDMI 1.3 with HDCP and CEC
VGA Inputs
RGBHV, YPbPr or Composite video
Power Supply
12V DC
Power Consumption
8 W max (not including SY-HDBT-70PR)
RS232
9600, 8 data bits, 1 stop bit, no parity –No handshaking
CEC mode can be enabled or disabled using the RS232 commands detailed above.
Environmental
Operating Temperature
0 - 40 °C non condensing
Physical
Dimensions (W x H x D)
220 x 44 x 148 mm
Weight
700 g

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Figure 3 –SY-MS51-AP Connection Diagram
The SY-MS51 is connected likewise, but without the cat6 cable, the SY-HDBT-70PR and the remote display
device.

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Safety Instructions
To ensure reliable operation of these products as well as protecting the safety of any person using or handling
these devices while powered, please observe the following instructions.
1. Use the power supplies provided. If an alternate supply is required, check Voltage, polarity and that it
has sufficient power to supply the device it is connected to.
2. Do not operate these products outside the specified temperature and humidity range given in the above
specifications.
3. Ensure there is adequate ventilation, as these products generate heat while operating.
4. Repair of the equipment should only be carried out by qualified professionals as these products contain
sensitive devices that may be damaged by any mistreatment.
5. Only use these products in a dry environment. Do not allow any liquids or harmful chemicals to come
into contact with these products.
After Sales Service
1. Should you experience any problems while using these products, firstly refer to the Troubleshooting
section in this manual before contacting SY Technical Support.
2. When calling SY Technical Support, the following information should be provided:
Product name and model number
Product serial number
Details of the fault and any conditions under which the fault occurs.
3. This product has a two year standard warranty, beginning from the date of purchase as stated on the
sales invoice. Online registration of this product is required to activate the full three year extended
warranty. For full details please refer to our Terms and Conditions.
4. SY Product warranty is automatically void under any of the following conditions:
The product is already outside of its warranty period
Damage to the product due to incorrect usage or storage
Damage caused by unauthorised repairs
Damage caused by mistreatment of the product
5. Please direct any questions or problems you may have to your local dealer before contacting SY
Electronics.