MuxLab PRODIGITAL 500442 User manual

© MuxLab Inc. 2018 1
HDMI 4x2 Matrix Switch
UHD-4K
RS232 and IR Commands
500442

© MuxLab Inc. 2018 2
SAFETY PRECAUTIONS
To insure the best from the product, please read all instructions carefully before using the
device. Save this manual for further reference.
 Follow basic safety precautions to reduce the risk of fire, electrical shock and injury.
 Do not dismantle the housing or modify the module. It may result in electrical shock
or burn.
 To prevent fire or shock hazard, do not expose the unit to rain, moisture or install this
product near water. Keep the product 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 use liquid or aerosol cleaners to clean this unit. Always unplug the power to
the device before cleaning.
 Using supplies or parts not meeting the product’s specifications may cause damage,
deterioration or malfunction.
 Refer all servicing to qualified service personnel.
 Install the device in a place with good ventilation to avoid damage due to
overheating.
 Unplug the power cord when left unused for a long period of time.
 Do not put any heavy items on the unit or on extension cable.
 Do not remove the housing of the device as you may be exposed to dangerous
voltage or other hazards.
 Information on disposal of devices: do not burn or mix with general household waste,
please treat them as normal electrical wastes.

HDMI 4x2 Matrix Switch RS232 and IR Commands
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Contents
1. Introduction ............................................................................................................... 4
1.1. Introduction to the 500442 ............................................................................. 4
1.2. RS232 Setup ................................................................................................. 4
2. RS232 Commands .................................................................................................... 5
2.1. Command Structure ....................................................................................... 5
2.2. Switching input port........................................................................................ 5
2.3. Query to get HPD status ................................................................................ 5
2.4. Query to get input port status ......................................................................... 6
3. IR Code ..................................................................................................................... 7

HDMI 4x2 Matrix Switch RS232 and IR Commands
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1. Introduction
1.1. Introduction to the 500442
The Matrix Switch 500442 may be managed via RS232 commands. Connect a RS232
cable between the command terminal (which may be a PC running terminal emulation
software) and the Matrix Switch.
MuxLab also provides at no charge a control software package that may be
downloaded from the MuxLab website to send RS232 commands to the Matrix
Switch.
When connecting the terminal to the Matrix switch, make sure the RS232 cable has
the correct termination on both ends for the devices being connected. Note that the
Matrix Switch comes with a 9 Pin D-Sub connector with female sockets (the cable will
require a 9-Pin D-Sub connector with male pins).
1.2. RS232 Setup
You may follow these settings to communicate with the unit:
 Baud rate: 19200
 Data width: 8bit
 Parity: none
 Stop: 1bit

HDMI 4x2 Matrix Switch RS232 and IR Commands
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2. RS232 Commands
2.1. Command Structure
The RS232 command structure consists of an opcode, identifiers, null values and
checksum. Additionally, the package length must be 13 bytes.
2.2. Switching input port
To change the input port, you may follow this command:
$a5 $5b $02 $03 Input (1-4) $00 output (1-2) $00 $00 $00 $00 $00 checksum
To calculate Checksum: 0x100 – (0xa5+0x5b+0x02+0x03+input port+0x00+output
port+0x00+0x00+0x00+0x00+0x00)
To switch a new input you may change “input port”, ”output port” and ”checksum”
For example: Setting output 1 from input 2: A5 5B 02 03 02 00 01 00 00 00 00 00 F8
2.3. Query to get HPD status
A query command will send a request, then the 500442 will answer.
For example: To query HPD status of output 1 you may send the
following command:
Sent package: A5 5B 01 05 01 00 00 00 00 00 00 00 F9
Received package: A5 5B 01 05 01 00 FF 00 00 00 00 00 FA
The 01 specifies the output port number, it should be either 1 or 2.
The FF means the HPD in output 1 is LOW, if 00 it means is HIGH.

HDMI 4x2 Matrix Switch RS232 and IR Commands
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2.4. Query to get input port status
To request input port status of output 1 you may send the following
command:
[0xa5+0x5b+0x01+0x04+output+0x00+0x00+0x00+0x00+0x00+0x00+
0x00+checksum]
For example: Querying input 1 status:
Sent package: A5 5B 01 04 01 00 00 00 00 00 00 00 FA
Received package: A5 5B 01 04 01 00 FF 00 00 00 00 00 FB
The 01 specifies the input port number, it should be either 1 or 4.
The FF means port 1 is plugged in while 00 means it is unplugged.

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3. IR Code
NEC CODE
#define SYSTEM_CODE 0x00
Function Code
#define IR_KEY_TX_A_FROM_1 0x14
#define IR_KEY_TX_A_FROM_2 0x57
#define IR_KEY_TX_A_FROM_3 0x41
#define IR_KEY_TX_A_FROM_4 0x46
#define IR_KEY_TX_A_PRE 0x1d
#define IR_KEY_TX_A_NEXT 0x1f
#define IR_KEY_TX_B_FROM_1 0x19
#define IR_KEY_TX_B_FROM_2 0x1b
#define IR_KEY_TX_B_FROM_3 0x11
#define IR_KEY_TX_B_FROM_4 0x15
#define IR_KEY_TX_B_PRE 0x12
#define IR_KEY_TX_B_NEXT 0x59
#define IR_KEY_EDID_INDEX_1 0x5e
#define IR_KEY_EDID_INDEX_2 0x06
#define IR_KEY_EDID_INDEX_3 0x05
#define IR_KEY_EDID_INDEX_4 0x03
#define IR_KEY_EDID_INDEX_5 0x47
#define IR_KEY_EDID_INDEX_6 0x07
#define IR_KEY_EDID_INDEX_7 0x40
#define IR_KEY_EDID_INDEX_8 0x02
#define IR_KEY_EDID_INDEX_9 0x18

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#define IR_KEY_EDID_INDEX_10 0x44
#define IR_KEY_EDID_INDEX_11 0x0f
#define IR_KEY_EDID_INDEX_12 0x51
#define IR_KEY_EDID_INDEX_OUT_A 0x0a
#define IR_KEY_EDID_INDEX_OUT_B 0x1e
#define IR_KEY_EDID_AUTO 0x0e
#define IR_KEY_INPUT_1 0x53
#define IR_KEY_INPUT_2 0x52
#define IR_KEY_INPUT_3 0x01
#define IR_KEY_INPUT_4 0x45
#define IR_KEY_INPUT_ALL 0x1a