Ocean Matrix OMX-SW6x6 User manual

OMX-SW6x6

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CONTENTS
1INTRODUCTION 3
2SPECIFICATIONS 3
3YOUR OMX-SW6X6 6X6 VIDEO / AUDIO MATRIX SWITCHER 3
3.1 About the OMX-SW6x6 3
3.2 Features of the OMX-SW6x6 3
4RACK MOUNTING 5
5CONNECTING TO VIDEO DEVICES 5
6CONNECTING TO AUDIO DEVICES 6
7USING THE MACHINES 6
7.1 Powering on the Machine 6
7.2 Using the Front Panel Controls 6
7.2.1 Selecting an Output 6
7.2.2 Selecting an Input 6
7.2.3 Connecting a Video/Audio Input/Output 6
7.2.4 Disconnecting a Video/Audio Input 6
7.2.5 Connecting a Video/Audio Input to All Outputs 6
7.2.6 Selecting Video/Audio Control (Breakaway) 6
7.2.7 Using the Audio Follow Video Mode 6
7.2.8 Storing a Configuration 6
7.2.9 Recalling a Configuration 7
7.2.10 Deleting a Setup 7
7.2.11 Using the Take Function 7
7.2.12 Resetting the Machine 7
7.3 Using the Rear Panel Controls 7
7.3.1 Selecting the Sync Source 7
7.3.2 Setting the Configuration Switches 7
7.4 RS-232 and RS-485 Operation 8
8TYPICAL APPLICATIONS 9
8.1 Basic Video-Audio Setup 9
8.2 Component Switching using Multiple Matrix Switchers 10
9TAKING CARE OF YOUR MATRIX SWITCHER 11
10 TROUBLESHOOTING 11
10.1 Power and Indicators 11
10.2 Video Signal 11
10.3 Audio Signal 12
10.4 Control 12
10.5 Switching Malfunctions 13
11 COMMUNICATION PROTOCOL 13

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FIGURES
FIGURE 1: OMX-SW6X6 FRONT PANEL FEATURES 4
FIGURE 2: OMX-SW6X6 REAR PANEL FEATURES 5
FIGURE 3: DIP SWITCHES GENERAL VIEW 8
FIGURE 4: RS-232 CONTROL CONNECTOR WIRING 9
FIGURE 5: RS-232 AND RS-485 OPERATION 9
FIGURE 6: TERMINATING THE LINE 9
FIGURE 7: CONNECTING THE OMX-SW6X6 10
TABLES
TABLE 1: OMX-SW6X6 FRONT PANEL FEATURES 4
TABLE 2: OMX-SW6X6 REAR PANEL FEATURES 5

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 INTRODUCTION
Congratulations on purchasing your OMX-SW6x6 6x6 Video / Audio Matrix Switcher, which comes
with a power cord (we recommend that you use only the power cord that is supplied with this machine),
null modem adapter, control software and this instruction manual.
 SPECIFICATIONS
INPUTS: 6 composite video, 1Vpp/75on BNC connectors
1 sync/video genlock 1Vpp/75with sync select switch
6 audio stereo, + 4dBm/62kon RCA connectors
OUTPUTS: 6 composite video, 1Vpp/75on BNC connectors
6 audio stereo, + 4dBm/50(27Vpp max.) on RCA connectors
VIDEO BANDWIDTH (- 3dB): 200MHz
AUDIO BANDWIDTH (3dB): 100kHz
NON LINERARITY: 0.1%
DIFF. GAIN: 0.05%
DIFF. PHASE: 0.03 Deg.
SWITCHING: Vertical Interval
VIDEO S/N: 74dB
AUDIO S/N: 88dB unweighted (1Vpp)
VIDEO CROSSTALK: -50dB
CONTROL: Manual, RS-232 or RS-485
AUDIO THD: 0.016% (1V, 1kHz)
K-FACTOR: < 0.05%
POWER SOURCE: 230VAC, 50/60Hz,(115VAC, U.S.A.) 11VA
DIMENSIONS: 19-inch (W), 7-inch (D) 2U (H) rack mountable
WEIGHT: 3.4kg. (7.5lbs.) approx.
ACCESSORIES: Power cord, Windows® - based control software, and Null modem adapter
 YOUR OMX-SW6X6 6X6 VIDEO / AUDIO MATRIX SWITCHER
This section describes the OMX-SW6x6.
 About the OMX-SW6x6
The OMX-SW6x6 is a broadcast quality high performance matrix switcher for composite video and
unbalanced stereo audio signals. Switching during the vertical interval ensures glitch-free switching
with genlocked sources. It is a true matrix, letting you route any input to any or all outputs
simultaneously.
The OMX-SW6x6 can switch stereo audio signals in "audio-follow-video" mode or separately
(breakaway). Also, the TAKE button lets you place multiple switches in a queue, and then activate
them with one touch of this button or a single serial command. The OMX-SW6x6 has manual, RS-
232 and RS-485 controls. Six preset memory locations are provided for quick access to common
configurations, and the non-volatile memory "remembers" the last setting prior to being powered-
down. The machine has an external Sync/Genlock input as well, and may be programmed to switch
according to the timing of either this input or of source number 1.
It is dependable, rugged, and fits in two vertical spaces of a standard 19” rack. Video bandwidth of
200MHz ensures that it remains transparent even in the most critical applications.
 Features of the OMX-SW6x6
Figure 1 and Table 1 define the front panel features of the OMX-SW6x6. Figure 2 and Table 2 define
the rear panel features of the OMX-SW6x6.

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Figure 1: OMX-SW6x6 Front Panel Features
Table 1: OMX-SW6x6 Front Panel Features
No. Feature Function
1. Power Switch Illuminated switch: supplies power to the unit.
2.
OUTPUT
SELECTOR buttons Select the desired output that the input signal is switched to.
3.
INPUT SELECTOR
buttons Select the desired input to be switched to the output.
NOTE: Pressing input buttons "1", "2" and "3" together resets the machine and
performs a 7-segment display test.
4.
OUTPUT STATUS
labels
Identifies a crosspoint between each output and the input below it.
5.
INPUT STATUS
display
Displays the selected input switched to the output (marked above each input).
6. RCL illuminated
button
Should be pressed, followed by an input or output pushbutton to select a
predetermined setup (1-6 available). For example, press RCL followed by INPUT
4button to recall Setup # 4 from the non-volatile memory.
7. STO illuminated
button
Should be pressed, followed by an input or output pushbutton to store the current
status in the non-volatile memory. For example. Press STO followed by INPUT 4
button to store Setup # 4 in the non-volatile memory.
NOTE: To delete a setup from the memory, press the STO and RCL buttons
simultaneously, followed by the input button (Setup number) to be deleted.
8. AFV illuminated
button
When pressed, illuminates and selects the "Audio Follow Video" function. If the
audio configuration differs from the video configuration, the INPUT STATUS
display flashes the audio outputs that are to be reconfigured for AFV operation. In
such case, the TAKE button must be pressed to confirm the modification.
9.
AUDIO When pressed, illuminates and selects the audio mode (Breakaway) to enable
modification of the audio crosspoints.
10.
VIDEO When pressed, illuminates and selects the video mode (Breakaway) to enable
modification of the video crosspoints.
11.
TAKE The machines can operate either in "Take" mode or in "Normal" (no user
confirmation for each action is needed) mode. Pressing the TAKE button toggles the
mode, and the button illuminates when in "Take Mode". In "Take Mode", any
action would cause the TAKE button to blink before implementation, and the user is
required to press TAKE again in order to implement the operation.
NOTE: To cancel any operation initiated by pressing a button, press the same
button again.
12.
OFF When pressed after pushing an output button, disconnects that video/audio output
from the video/audio input. To disconnect all the outputs, press the ALL button
followed by the OFF button.
13.
ALL When pressed followed by an input button, connects that audio/video input to all
audio/video outputs.

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Figure 2: OMX-SW6x6 Rear Panel Features
Table 2: OMX-SW6x6 Rear Panel Features
No. Feature Function
1.
1-6 AUDIO INPUTS
RCA connectors Audio inputs used to connect the stereo audio input sources.
2.
1-6 AUDIO OUTPUTS
RCA connectors Audio outputs used to connect the stereo audio output acceptors.
3. RS-485 terminal block Used for bi-directional communication with another Matrix Switcher or PC
through RS-485 interface.
4. Power Connector A 3-prong AC connector allows power to be supplied to the unit. Directly
underneath this connector, a fuse holder houses the appropriate fuse.
5. Setup DIP switches Allow proper configuration of the control signals received and transmitted
through the RS-232 (or RS-485) control port, master/slave modifications, line
termination and device ID numbers.
6. DB-9 female RS-232
connector Used for control of the Matrix Switcher from a PC, or remote control device,
through an RS-232 interface and a null-modem adapter (provided with the
machine).
NOTE: Operation of the machine from a remote PC may be done using the
control software (provided with the machine).
7. VIDEO OUTPUTS BNC
connectors Video outputs used to connect the video acceptors.
8. VIDEO INPUTS BNC
connectors Video inputs used to connect the video sources.
9. SYNC Select switch Selects either an external sync from the external source, or internal sync, which
is normally inputted via the VIDEO INPUT #1 connector.
10. EXT. SYNC BNC
connector
Used for connection of an external video sync input. The external sync input
can be selected by the SYNC Select switch.
 RACK MOUNTING
The OMX-SW6x6 may be rackmounted in a standard 19” EIA rack assembly and includes rack
“ears” at the ends of the front panel. The OMX-SW6x6 does not require spacing above or below the
unit for ventilation. To rack mount the OMX-SW6x6, simply place the unit’s rack ears against the
rack rails of the rack, and insert standard screws through each of the four corner holes in the rack ears.
 CONNECTING TO VIDEO DEVICES
Video sources and output devices (such as monitors or recorders) may be connected to the OMX-
SW6x6 through the BNC connectors located on the rear (see the example in Figure 7). Bear in mind
that the output signal format will match that of the input signal format. All signal connections that use
more than one cable interconnecting between devices should be of equal length. (Example: cables
between a camera and the machine should be equal in length).

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 CONNECTING TO AUDIO DEVICES
Audio sources and output devices (such as amplifiers or recorders) may be connected to the OMX-
SW6x6 through the RCA connectors located on the rear (see the example in Figure 7).
 USING THE MACHINES
 Powering on the Machine
NOTES
1. The machine should only be powered on after all connections
are completed, and all source devices have been powered on.
Do not attempt to connect or disconnect any video, audio or
control signals to the machine while it is powered on!
2. The socket-outlet should be near the equipment and should be
easily accessible. To fully disconnect equipment, remove
power cord from socket.
1. Press the toggle switch on the far left-hand side of the front panel to the ON position. The toggle switch glows.
2. Operate the acceptors.
 Using the Front Panel Controls
The front panels of OMX-SW6x6 are designed to be simple to operate, and accomplish the basic
function of selecting an input source and output device.
7.2.1 Selecting an Output
Output selection on the OMX-SW6x6 is made by pressing any of the buttons marked "1" to "6" on
the front panel. These buttons correspond to output connections as marked on the rear panel.
7.2.2 Selecting an Input
Input selection on the OMX-SW6x6 is made by pressing any of the buttons marked "1" to "6" on
the front panel. These buttons correspond to input connections as marked on the rear panel.
7.2.3 Connecting a Video/Audio Input/Output
To connect a video/audio Input to a specific output, press the desired output button (upper line),
followed by the desired input button (lower row).
7.2.4 Disconnecting a Video/Audio Input
To disconnect a video/audio Input from a specific output, press the desired output button followed by
the OFF button. To disconnect all the outputs, press the ALL button, followed by the OFF button.
7.2.5 Connecting a Video/Audio Input to All Outputs
To connect a video/audio Input to all outputs, press the ALL button followed by the INPUT button
corresponding to the input, which is to be routed to all the outputs.
7.2.6 Selecting Video/Audio Control (Breakaway)
For audio control only, press the AUDIO button. For video control only, press the VIDEO button.
Note that the STATUS window displays audio or video settings in accordance with the selection.
7.2.7 Using the Audio Follow Video Mode
To select "Audio Follow Video" mode, press the AFV button. Note that if the audio configuration
differs from the video configuration, the differing audio outputs blink in the STATUS window of the
audio display. The AUDIO and TAKE buttons blink as well, which means that the audio configuration
will be modified for AFV operation. Press the TAKE button to confirm the modification.
7.2.8 Storing a Configuration
To store a configuration, press the STO button, followed by input or an output button to mark the
setup number. For example, press STO followed by INPUT # 3 button to store the current
configuration in Setup # 3 in the internal non-volatile memory of the switcher. To abort an operation
of the STO button once it was pressed, press it again.

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7.2.9 Recalling a Configuration
To recall a configuration, press the RCL button, followed by an input or an output button, marking
the setup number. For example, press RCL followed by INPUT# 3 button to recall Setup # 3 from
the internal non-volatile memory of the switcher. To abort an operation of the RCL button once it
was pressed, press it again.
7.2.10 Deleting a Setup
To delete a setup, press both the STO and the RCL buttons followed by the input button
corresponding to the setup number, which is to be deleted.
7.2.11 Using the Take Function
To activate the " TAKE " Function, press the TAKE button (the TAKE button illuminates). After
each pressing of the above-mentioned buttons, the TAKE button blinks together with the relevant
numbers in the STATUS display. Confirmation of the action is implemented by pressing the TAKE
button again (the TAKE button then stops blinking). If the STATUS display keeps on blinking for
one minute (no button is pressed), the function will be aborted. To abort implementing an operation in
“TAKE” mode, press that button which originally caused the display to blink.
7.2.12 Resetting the Machine
To reset the machine, press INPUTS buttons "1", "2" and "3" simultaneously. The machine resets
itself and a 7-segment self-test is automatically performed.
 Using the Rear Panel Controls
The switcher ID numbers, the RS-232 / RS-485 settings, and the sync source selection are all
configured on the rear panel of the machine.
7.3.1 Selecting the Sync Source
Input sync selection is made using the "Sync Select” button located on the rear panel. For an external
sync operation, press the “Sync Select” button. For an internal sync operation, release the “Sync
Select” button. This modifies the input circuitry to select the required input sync source.
7.3.2 Setting the Configuration Switches
Setting the configuration switches is accomplished through a bank of DIP switches located on the rear
panel. Table 3 describes the settings and configurations for each of the DIP switches. To set the
configuration switches, confirm that power to the Matrix Switcher is OFF, and with a small flathead
screwdriver, move the DIP switches to the "ON" or "OFF" position as shown in Table 3 and Figure 3.
Master/Slave DIP switches configure the Matrix Switcher for operation in a multiple switcher
configuration. If a Matrix Switcher is operating and being controlled independently, it should be
assumed that it is operating in the “Master” configuration.
Up to 8 Matrix Switchers may be cascaded for control via a single port by configuring one Matrix
Switcher as a "master", or ID number "1", while all the others are assigned as slave Matrix Switchers
or an ID other than "1". When RS-232 connection is implemented, DIP switch # 8 allows you to
enable RS-232 communication between the Matrix Switcher and the PC. This is desirable, so that the
controlling device “knows” that the controlled device has carried out its instructions. When RS-485
connection is used for communication between the Matrix Switcher and the PC, DIP switch # 8
should be up ("OFF"). In some applications, it may be desirable for some machines not to reply to
instructions received on the RS-232 and RS-485 ports. In this scenario, you would disable the
“Reply”, or acknowledgement commands. DIP switch # 5 enables or disables "reply" from the
Matrix Switcher to the PC.
In the case of interconnection between more than two RS-485 receivers-transmitters (including PC),
the termination resistor must be disconnected on all the devices, except the first and last machines on
the communication line. DIP switch # 4 connects or disconnects the termination resistor.

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Table 3: DIP Switches Configuration
MACHINE
NUMBER
SELF ADDRESS DIP SWITCH DIP switch #4
"ON"= Connects the termination resistor.
"OFF"= Disconnects the termination
resistor.
2 1 0 3 2 1
DIP switch #5
"ON"= Enables reply from switcher to PC.
"OFF"= Disables reply from switcher to
PC.
1. (Master)
0 0 0 ON ON ON
DIP switch #6,
DIP switch #7
Not used
2.
0 0 1 ON ON OFF
DIP switch #8 "ON"= Enables RS-232 communication
between switcher and PC.
"OFF"= Enables RS-485 communication
between switcher and PC.
3.
0 1 0 ON OFF ON
4.
0 1 1 ON OFF OFF
5.
1 0 0 OFF ON ON
6.
1 0 1 OFF ON OFF
7.
1 1 0 OFF OFF ON
8.
1 1 1 OFF OFF OFF
Figure 3: DIP switches General View
 RS-232 and RS-485 Operation
Connections made between your switcher and a PC are accomplished using your computer’s RS-232
communication port, or by connecting the PC to the RS-485 terminal block connector. Bear in mind
that serial communication between Matrix Switchers is always via RS-485. The RS-232 port is either
a DB-9 (9-pin port) or DB-25 (25-pin port). The cable connecting your switcher to the PC should be
wired as shown in Figure 4. A 9-25 pin adapter or 9-9 pin null-modem adapter is included for your
convenience. The null-modem adapter is wired as shown in Figure 4. If using the adapter
(recommended), plug it into the PC’s serial port, and connect via a flat-cable from the other end of the
adapter to your switcher. Keep in mind that it is not recommended to extend an RS-232 signal beyond
a length of 30 feet, without the use of an RS-232 to RS-422 converter at both the PC and the switcher.
If five machines and a PC are cascaded together for example, using RS-485 interconnection,
disconnect the termination resistors on all machines except the fifth (see Figure 6). For similar setup,
without a PC connected on the RS-485 line, disconnect all resistors except for the first and fifth
machines.

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Figure 4: RS-232 Control Connector Wiring
Figure 5: RS-232 and RS-485 Operation
Figure 6: Terminating the Line
 TYPICAL APPLICATIONS
This section describes typical applications.
 Basic Video-Audio Setup
To setup the OMX-SW6x6, as the example in Figure 7 illustrates, do the following (as necessary):
1. Connect all the video-audio sources to the video-audio inputs of the OMX-SW6x6.
2. Connect all the video-audio acceptors to the video-audio outputs of the OMX-SW6x6.
3. Operate the OMX-SW6x6, the PC, the sources and the acceptors.
4. Select the required video input to be switched, using front panel input selector pushbuttons (or the software
program controls).

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Figure 7: Connecting the OMX-SW6x6
 Component Switching using Multiple Matrix Switchers
A commonly used video format is component video, and switching the three signals (components)
simultaneously is sometimes a complicated task. Using several Matrix Switchers, however, this can
be done very easily and efficiently. This is done by dedicating each switcher to a single component –
one for the Red component, one for Green, one for Blue, and one for Sync. Each component of the
RGBS signal is then connected to the same input (or output) number on the switcher. For example,
the first RGBS source is connected to Input #1 on the 4 switchers, the second is connected to Input #2
on the switchers, etc. The switchers are configured to mirror each other, so the input to output
connections are identical on all 4 machines!
In order to switch during the vertical interval when working in this way, the switchers should be
configured for operation using the “Ext. Sync”. A sync source should then be connected to all the
machines (for RGB this could be the Green channel, and for YUV this could be the Y channel).
The same principle may be used for YC (2 switchers), YUV (3 switchers), RGBS (4 switchers), and
RGBHV (5 switchers).

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 TAKING CARE OF YOUR MATRIX SWITCHER
Do not locate your Matrix Switcher in an environment where it is susceptible to dust or moisture.
Both of these may damage the electronics, and cause erratic operation or failure. Do not locate your
Matrix Switcher where temperature and humidity may be excessive. Doing so may also damage the
electronics, and cause erratic operation or failure of your Matrix Switcher. Do not clean your Matrix
Switcher with abrasives or strong cleaners. Doing so may remove or damage the finish, or may allow
moisture to build up. Take care not to allow dust or particles to build up inside unused or open
connectors.
 TROUBLESHOOTING
NOTES
1. Please note that if the output signal is disturbed or
interrupted by very strong external electromagnetic
interference, it should return and stabilize when such
interference ends. If not, turn the power switch off and on
again to reset the machine.
2. If the recommended actions still do not result in satisfactory
operation, please consult your Dealer.
 Power and Indicators
Problem Remedy
No power 1. Confirm that the rocker switch is in the “ON” position, and that the lamp is
illuminated.
2. Confirm that power connections are secured at the machine and at the
receptacle. Make sure the receptacle is active, outputting the proper mains
voltage.
3. If there is still no power, check the fuse. Remove power cord from the AC
outlet and from the machine and then, using a flat screwdriver, remove the
fuse holder located directly below the power connector. Confirm that the fuse
is good by looking at the wire connected to the ends of the fuse. If the wire is
broken, replace the fuse.
 Video Signal
Problem Remedy
No video at the output
device, regardless of input
selected.
1. Confirm that your sources and output device are powered on and connected
properly. Video signals connected to the input of your machine should be of an
identical signal format at the output of your source. Video signals at the output
of your machine should be of an identical signal format as at the input of your
display or recorder.
2. Confirm that any other switchers in the signal path have the proper input
and/or output selected.
Video level is too high or
too dim.
1. Verify that the video line is well matched through 75ohm impedance,
otherwise it results in a video level that is too high or too dim when looping is
performed and the termination switches are not in proper position.
2. Confirm that the connecting cables are of high quality, properly built and
terminated with 75ohm BNC connectors. Check level controls located on your
source input device or output display or recorder.

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Problem Remedy
Noise bars are "rolling" up
or down in the output
image
or:
Low Frequency Hum in
the audio output
Hum bars (ground loop) are caused by a difference in the ground potential
of any two or more devices connected to your signal path. This difference
is compensated by passing that voltage difference through any available
interconnection, including your video cables.
WARNING!
Do not disconnect the ground from any piece of
video equipment in your signal path!
Check the following to remove hum bars:
1. Confirm that all interconnected equipment is connected to the same phase of
power, if possible.
2. Remove equipment connected to that phase that may introduce noise, such as
motors, generators, etc.
3. Disconnect all interconnect cables and reconnect them one at a time until the
ground loop reappears. Disconnect the affected cable and replace, or insert an
isolation transformer in the signal path.
 Audio Signal
Problem Remedy
No audio at the output
device, regardless of input
selected
1. Confirm that your sources and output device are powered on and connected
properly. Audio signals connected to the input of your machine should be
properly wired to the output of your source. Audio signals connected to the
output of your machine should be properly wired to the input of your machine
or recorder.
2. Confirm that any other amplifiers in the signal path have the proper input
and/or output selected. Pay special attention to input amplifiers that may be
built into your acceptor.
Audio level is too low 1. Confirm that the connecting cables are of high quality and properly built. Take
special care in noting the wiring configuration of balanced to unbalanced
cables.
2. Check level controls located on your source input device or output display or
recorder.
 Control
Problem Remedy
No control of Matrix
Switcher from PC
software
1. Confirm the wiring of the connecting cable. Cable length should not exceed 25 feet.
2. Confirm that all DIP switches on the Matrix Switcher have been set properly. Keep
in mind that if you are only controlling one Matrix Switcher on a specific port, that
Matrix Switcher must be assigned the ID of “1”.
3. Confirm that the baud rate of your computer COM port is set to the same as that of
your Matrix Switcher (9600-Baud). Confirm that the proper COM port is selected in
the control software.
4. Confirm that bi-directional communication is enabled on all Matrix Switchers.
5. With custom software, do not send multiple commands at the same time. The Matrix
Switcher must complete one command and send the reply, before receiving another.
6. Confirm that the computer you are using supports true RS-232C protocol.
Computers such as the Apple Macintosh do not!

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 Switching Malfunctions
Problem Remedy
The switcher succeeds
in switching a number
of sources then fails to
switch one.
Malfunction in the particular source or cable assembly.
NOTE
The most common failure mode in transferring the signal of
an audio source is a break in the connecting wire.
Disconnect the source from a channel that is switching successfully and connect the
suspect source to it. If the channel continues to switch successfully, then there is
something wrong with the Matrix Switcher or the suspect source was not connected
properly. If it does not continue to switch successfully, then there is something wrong
with the source or cable assembly. Check them.
The Matrix Switcher
turns ON but will not
switch at all
One of the two flat cables leading from the main board to the control board may be
disconnected and the switch command is not being transferred to the Matrix
Switcher. Check them.
 COMMUNICATION PROTOCOL
Communication with the Matrix Switchers described in this manual uses four bytes of information as
defined below. Data is transferred at 9600 baud with no parity, 8 data bits and 1 stop bit.
1
st
byte
DESTINATION INSTRUCTION
0 D N5 N4 N3 N2 N1 N0
7 6 5 4 3 2 1 0
MSB LSB
2
nd
byte
INPUT
1 0 0 0 I3
7 6 5 4 3
3
rd
byte
OUTPUT
1 0 0 0 O3
7 6 5 4 3
4
th
byte
MACHINE NUMBER
1 0 0 0 0 M2 M1
7 6 5 4 3 2 1
1
st
BYTE: Bit 7 – Defined as "0", D – “DESTINATION BIT”
This bit is always "low", when sending from the PC to the Matrix Switchers, and "high" for information sent to
the PC.
N5…N0 – “INSTRUCTION”.
The function that is to be performed by the Matrix Switcher (s) is defined by these 6 bits. Similarly, if a function
is performed via the machine’s keyboard, then these bits are set with the INSTRUCTION NO. which was
performed. The instruction codes are defined according to the table below (INSTRUCTION NO. is the value to
be set for N5…N0).
2
nd
BYTE: Bit 7 – Defined as "1".
Bits 4 – 6 - Defined as "0".
I3… I0 – “INPUT”.
When switching via RS-232 for RS- 485 (for instruction codes 1 and 2), these bits set the input that is to be
switched. Similarly, if switching is done via the machine’s keyboard, then these bits are set with the input

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number which was switched. For disconnect, set as 0. For other operations, these bits are defined according to
the table.
3
rd
BYTE: Bit 7 - Defined as "1".
Bits 4-6 Defined as "0".
O3 – O0 – “OUTPUT”.
When switching via RS-232 or RS-485 (for instruction codes 1 and 2), the output to switch is set by these bits.
Similarly, if switching is done via the machine’s keyboard, then these bits are set with the output number which
was switched. For other operations, these bits are defined according to the table.
4th BYTE: Bit 7 – Defined as "1".
Bits 3-6 Defined as "0".
M2… M0 – “Machine Number”.
Machine Number = (DIP – Switch Code) + 1.
INSTRUCTION DEFINITION FOR SPECIFIC INSTRUCTION NOTE
# DESCRIPTION INPUT OUTPUT
0 RESET MACHINE 0 0 1
1 SWITCH VIDEO Set equal to video input to be
switched Set equal to video output to be switched (0=to all the outputs)
2
2 SWITCH AUDIO Set equal to audio input to be
switched Set equal to audio output to be switched (0=to all the outputs)
2
3 STORE STATUS Set as SETUP # - To store parameters
- to delete setup
2,7
4 RECALL STATUS Set as SETUP # Don’t care 2,7
5 REQUEST STATUS OF A
VIDEO OUTPUT Set as SETUP #
Equal to output number whose
status is read 3,7
6 REQUEST STATUS OF AN
AUDIO OUTPUT Set as SETUP #
Equal to output number whose
status is read 3,7
7 VIS SETTING Don’t care - for immediate switching
- for VIS switching
2
8 BREAKAWAY SETTING Don’t care - for audio-follow-video
- for breakaway
2
9 NOT USED
10 REQUEST VIS SETTING Set as SETUP # Don’t care 3,7
11 REQUEST BREAKAWAY
SETTING Set as SETUP # Don’t care 3,7
12 to 14 NOT USED
15 REQUEST WHETHER
SETUP IS DEFINED Set as SETUP # Don’t care 4
16 ERROR/BUSY Don’t care Don’t care 5
17 RESERVED 6
18 RESET MACHINE 0 0 1
19 STORE STATUS Set as SETUP # 0-to store parameters
1-to delete setup
2,7,9
20 RECALL STATUS Set as SETUP # Don’t care 2,7,10
21 to 56 NOT USED
57 SET AUTO-SAVE for auto save
0 – no save
Don’t care 8,2
58 to 60 RESERVED
61 IDENTIFY MACHINE 1or 2 – machine name
3 or 4 – version
Don’t care 11

15
NOTES ON THE ABOVE TABLE:
NOTE 1 - When the master switcher is reset, (e.g. when it is turned on), the reset code is sent to the PC. If this code is sent
to the switchers, it will reset according to the present power down settings.
NOTE 2 - These are bi-directional definitions. That is, if the switcher receives the code, it performs the instruction, and if
the instruction is performed (due to a keystroke on the front panel), then these codes are sent. For example:
0000 0001
1000 0101
1000 1000
0011
was sent from the PC, then the switcher (machine # 3) will switch input 5 to output 8. If the user switched input # 1 to output
# 7 via the front panel keypad, then the switcher will send:
0100 0001
1000 0001
1000 0111
1000 0011 

 to the PC.
When the PC sends one of the commands in this group to the switcher, then, if the instruction is valid, the switcher replies by
sending to the PC the same four bytes that it sent (except for the first byte, where the DESTINATION bit is set "high").
NOTE 3 - The reply to a "REQUEST" instruction is as follows: the same instruction and INPUT codes as were sent are
returned, and the OUTPUT is assigned the value of the requested parameter. The replies to instructions 10 and 11 are as per
the definitions in instructions 7 and 8 respectively. For example, if the present status of machine number # 5 is breakaway
setting, then the reply to
0000 1011 0100 1100
1000 0001 Would be 

1000 0001
1000 0000 1000 0001
1000 0101 1000 0101
NOTE 4-The reply to the "REQUEST WHETHER SETUP IS DEFINED" is as in TYPE 3 above, except that here the
OUTPUT is assigned with the value 0 if the setup is not defined; or 1 if it is defined.
NOTE 5-An error code is returned to the PC if an invalid code was sent to the switcher (e.g. trying to save to a setup greater
than 8, or trying to switch an input or output greater than the highest one defined). This code is also returned to the PC if an
RS-232 instruction is sent while the machine is being programmed via the front panel. Reception of this code by the switcher
is not valid.
NOTE 6–This code is reserved for internal use.
NOTE 7-SETUP #0 is the present setting. SETUP #1 to SETUP# 8 are the settings saved in the switcher's memory, (i.e.
those used for Store and Recall).
NOTE 8-Under normal conditions, the machine's present status is saved each time a change is made. The "power-down"
save (auto-save) may be disabled using this code. Note that whenever the machine is turned on, auto-save function is set.
NOTE 9–This is identical to instruction 3 (machine uses instruction 3, when sending to PC).
NOTE 10–This is identical to instruction 4 (machine uses instruction 4, when sending to PC).
NOTE 11-This is a request to identify the switcher/s in the system. If the INPUT is set as 1 or 2, the machine will send its
name. The reply is the decimal value of the INPUT and OUTPUT. For example, the reply to the request to send machine
name (for machine number 001) would be:
0111 1101
1000 1000 (i.e. 128 + 8)
1000 1000 (i.e. 128 + 8)
1000 0001
If the request for identification is sent with the INPUT set as 3 or 4, the appropriate machine will send its software version
number. Again, the reply would be the decimal value of the INPUT and OUTPUT - the INPUT representing the number in
front of the decimal point, and the OUTPUT representing the number after it.
For example, for version 3.5, the reply would be:
0111 1101
1000 0011 (i.e. 128 + 3)
1000 0101 (i.e. 128 + 5)
1000 0001

16
TABLE OF HEX CODES FOR THE MASTER
The table below shows the “HEX” codes for switching the OMX-SW6x6:
OUT 1
OUT 2 OUT 3 OUT 4 OUT 5 OUT 6
IN 1
























IN 2
























IN 3
























IN 4
























IN 5
























IN 6























