Hall Research Technologies SW-HD-4A User manual

User’s Manual
SW-HD-4A
4x1 HDMI Switch
UMA1292 Rev NC
© Copyright 2021. Hall Research Technologies, LLC. All rights reserved.
1163 Warner Ave. Tustin, CA 92780 | Ph: [phone] | Fax [phone]

4x1 4K60 HDMI Switch with Control and Audio Extraction
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Table of Contents
1.0 Introduction 4
2.0 Features 4
2.1 Package Contents Error!
Bookmark not defined.
3.0 Installation 5
3.1 Configuration 6
4.0 Operation 6
4.1 RS-232 and Telnet Commands 7
4.2 Web GUI Operation 10
4.3 Input Channel Scanning 11
4.4 Front Panel Lock 12
4.5 Factory Default 12
4.6 EDID Settings 12
5.0 Troubleshooting 13
5.1 Contacting Hall Research 13
5.2 Shipping and Packaging 13
6.0 Specifications 13

SW-HD-4A
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TRADEMARKS USED IN THIS MANUAL
Hall Research and its logo are trademarks of Hall Research Technologies, LLC. Any other trademarks
mentioned in this manual are acknowledged as the property of the trademark owners.
FCC RADIO FREQUENCY INTERFERENCE STATEMENT
This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that
is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has
been designed to comply with the limits for a Class A computing device in accordance with the specifications in
Subpart B of Part 15 of FCC rules, which are intended to provide reasonable protection against such interference
when the equipment is operated in a commercial environment. 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.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.

4x1 4K60 HDMI Switch with Control and Audio Extraction
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1.0 Introduction
The SW-HD-4A is a 4 input HDMI Switch with advanced switching technology enabling fast
switching of four HDMI sources to a single HDMI output.
The switcher supports resolutions up to 4K60 4:4:4 (UHD), 3D, and 36-bit deep color video.
Switching can be controlled via front panel buttons, IR remote control, RS-232, Telnet, or a
built-in Web GUI.
EDID management is provided, whereby you can select the EDID table for all the inputs from
a list of standard EDID's or copy the EDID from the connected display to all inputs. This can
be done using the Web GUI or by sending RS-232 commands.
The SW-HD-4A provides a mini-USB port on the front for firmware upgrades. This USB
connector also provides 500 mA of power and can be used to power external devices such as
Google™ Chromecast or Amazon™ Fire TV.
2.0 Features
• Fast switching technology reduces switching time.
• Front panel LED indicators for status monitoring
• Supports resolutions up to 4K60 4:4:4
• Supports 3D, HDR and deep color
• Control via front panel, IR, RS-232, Telnet and Web GUI
• Includes IR remote control
• Plug and play installation
• HDMI 2.0, HDCP 2.2 and below, and DVI 1.0 compliant
• High-definition audio pass-through
• Analog Stereo and Digital multi-channel audio extraction
• EDID emulation or pass-through
• USB port can power external devices such as video players

SW-HD-4A
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2.1 Package Contents
Qty (1) Model SW-HD-4A
Qty (1) Locking 12V DC Universal Power Supply
Qty (2) Mounting brackets
Qty (4) Rubber Feet with adhesive
Qty (1) IR Remote Control
Qty (1) IR Remote Detector cable
Qty (1) User’s Manual Card
*All packages are carefully inspected prior to shipment. However, if you think that you are
missing an accessory, please contact Hall Research Support for further assistance.
3.0 Installation
The following diagram illustrates a typical system setup.

4x1 4K60 HDMI Switch with Control and Audio Extraction
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3.1 Configuration
•Connect all video sources to the VIDEO IN connectors
•Connect the display device to the OUTPUT connector
•Connect the Power Supply to the power input
•Connect any external controller or PC to the RS-232 terminal block, if required.
•Connect IP-CTRL port to compatible LAN network, if required.
•Connect IR detector to external IR CTRL port, if required.
4.0 Operation
The unit can be controlled via front panel and via external control options like IR remote
control, RS-232, Telnet and/or the Web GUI.
•Press the desired INPUT button switch to display the available video on the HDMI output.
•The illuminated LED shows which input is directed to the OUTPUT connector.
•Press and hold INPUT button #1 for 7 seconds, then release to factory reset the unit to
default settings.
•Press and hold INPUT button #4 for 7 seconds to start cycling through each input at a 1-
minute rate
•Press and hold INPUT button #4 for 11 seconds to stop cycling through each input.
•The USB port can be used for firmware upgrades or powering external devices.
•The IR remote control supplied with the unit can be used to select the desired HDMI
INPUT, MUTE the HDMI OUTPUT audio or turn the system on or off (Unit will always be
ON after a power cycle).

SW-HD-4A
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4.1 RS-232 and Telnet Commands
•115200 baud, No Parity, 1 Stop Bit
•Telnet operation is via port # 6324 of the IP address setting
•All commands are in ASCII format
•Commands are NOT case sensitive.
•Each command must be terminated by a single character <CR> (0x0D)
•Unknown commands respond with “INVALID COMMAND”
•All responses are terminated with <CR><LF> (0x0D, 0x0A)
Command
Response
Function
DN
Query Device Name
SW-HD-4A
SWn
Where:
n = HDMI Input[1 to 4]
Switch to HDMI source
SWn
Where:
N = HDMI Input[1 to 4]
SW? Query switch state
SWn
Where:
N = HDMI Input[1 to 4]
EMn
Where:
n
Mode
0
Pass-through
1
Static
Set EDID Mode
EMn
Where:
n
Mode
0
Pass-through
1
Static
EM? Query EDID Mode
EMn
Where:
n
Mode
0
Pass-through
1
Static
EDn
Where:
n
EDID
0
4K2K@60 2 CH
1
4K2K@60 AC3
2
4K2K@60 4:2:0 2 CH
3
4K2K@60 4:2:0 AC3
4
1080P@60 2 CH
5
1080P@60 AC3
6
720P@60 2 CH
7
720P@60 AC3
Select Static EDID.
NOTE: Static EDID is
served to all the inputs
when EDID Mode is
EM1.
EDn
Where:
n
EDID
0
4K2K@60 2 CH
1
4K2K@60 AC3
2
4K2K@60 4:2:0 2 CH
3
4K2K@60 4:2:0 AC3
4
1080P@60 2 CH
5
1080P@60 AC3
6
720P@60 2 CH
7
720P@60 AC3
ED? Query Static EDID
Index.
EDn
Where:
n
EDID
0
4K2K@60 2 CH
1
4K2K@60 AC3
2
4K2K@60 4:2:0 2 CH
3
4K2K@60 4:2:0 AC3
4
1080P@60 2 CH
5
1080P@60 AC3
6
720P@60 2 CH
7
720P@60 AC3

4x1 4K60 HDMI Switch with Control and Audio Extraction
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Command
Response
Function
HDI?
Query HDMI Input
Status
THIS COMMAND NOT
AVAILABLE IN
TELNET SESSION
HDIn,m
Where:
n = HDMI Input [1 to 4]
m = HDMI State
m
State
0
Source not Connected
?
State Unknown
1
Source Connected
2
HDCP1.4 Encrypted
3
HDCP2.2 Encrypted
HDO? Query HDMI Output
Status
HDOm
Where:
m
State
0
Sink not Connected
?
State Unknown
1
Sink Connected
2
HDCP1.4 Encrypted
3
HDCP2.2 Encrypted
AUn
Where:
n
Mode
0
Mute OFF
1
Mute ON
Set HDMI Output
Audio state
NOTE THIS IS ONLY
THE HDMI OUTPUT
AUDIO.
THE 3.5 mm Extracted
Audio is ALWAYS ON
from the currently
selected Input
AUn
Where:
n
Mode
0
Mute OFF
1
Mute ON
AU? Query HDMI Output
audio state
AUn
Where:
n
Mode
0
Mute OFF
1
Mute ON
LKn
Where:
n
Mode
0
Lock OFF
1
Lock ON
Lock Front Panel
LKn
Where:
n
Mode
0
Lock OFF
1
Lock ON
LK? Lock Status Query
LKn
Where:
n
Mode
0
Lock OFF
1
Lock ON
IPCONFIG
Show current IP,
Subnet Mask and
Gateway addresses
THIS COMMAND NOT
AVAILABLE IN
TELNET SESSION
IP : xxx.xxx.xxx.xxx
MASK : xxx.xxx.xxx.xxx
GATEWAY: xxx.xxx.xxx.xxx

SW-HD-4A
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Command
Response
Function
IP [IPv4 Address] Set IP Address
xxx.xxx.xxx.xxx
[IPv4 Address]
IP? Query IP Address
xxx.xxx.xxx.xxx
[IPv4 Address]
SN [IPv4 Address] Set Subnet
xxx.xxx.xxx.xxx
[IPv4 Address]
SN? Query subnet
xxx.xxx.xxx.xxx
[IPv4 Address]
GW [IPv4 Address] Set Gateway
xxx.xxx.xxx.xxx
[IPv4 Address]
GW? Query Gateway
xxx.xxx.xxx.xxx
[IPv4 Address]
FW
Query Firmware
Version
V1.0
FD Factory Default
Factory Default
SW-HD-4A
V1.0
REBOOT Reboots the unit
REBOOT
SW-HD-4A
V1.0
PWn
Where:
n = 0 = Output Blanked, all LEDs off
n = 1 = Output On, Selected input active
Simulates a power
condition
PWn
Where:
n = 0 = Output Blanked, all LEDs off
n = 1 = Output On, Selected input active

4x1 4K60 HDMI Switch with Control and Audio Extraction
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4.2 Web GUI Operation
As shipped from the factory (or after factory default reset), the SW-HD-4A IP address is set for
a static IP address of 192.168.0.88 and a static GW (Gateway) address of 192.168.0.1.
Use RS-232 terminal software to find the currently assigned IP and GW addresses (and to
also set them as desired).
SW-HD-4A internal Web pages (Web GUI)
oAccess the SW-HD-4A Webpage with any compatible browser at the IP address
found above.
The browser will open with the devices Switch Info tab displayed.
Click the tabs at the top of the screen to access the other tabs.
oSwitch Info Tab
INPUT 1 thru INPUT 4
•Shows the currently selected HDMI input.
•Click the desired INPUT button to select that HDMI input.
The following information is also shown
•HDMI Input Status (ON or OFF)
•HDMI HDCP Input State (None, HDCP 1.4 or HDCP 2.2)
•Resolution
•Pixel Clock
•Output Color Space
•Color Bit Depth
•EDID presented to the HDMI Input based on the configuration setting.

SW-HD-4A
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oCONFIG Tab
RX EDID
•Controls the EDID selection presented to each of the HDMI inputs
HDCP Mode
•Controls the HDMI Output HDCP setting
Fast Switch Enable
•Controls the Fast Switch configuration. This defaults to ON
YUV/420 to YUV/444
•Controls whether the HDMI Input color space is converted to YUV/444 on the HDMI Output
Color bar
•Controls whether a Color Bar pattern is sent to the HDMI OUTPUT
HDMI Audio Out Mute
•Controls whether the HDMI OUTPUT Audio is muted or not
Auto Scan Inputs
•Controls whether the HDMI Inputs are automatically switched at a 1-minute cycle rate
Network Parameters
•Used to set the network IP, Subnet, and Gateway
Refresh Page
•Click this button to update the webpage settings.
Apply Settings
•Click this button to apply any changes to the webpage settings.
Reboot System
•Reboots the system
4.3 Input Channel Scanning
The SW-HD-4A can automatically cycle through each of the connected HDMI Inputs.
In this mode, each HDMI Input is displayed for 1 minute before changing to the next HDMI input.
Auto-scan Mode can be enabled and disabled by external command (Web GUI), or via the
front panel pushbuttons.
•To enable from front panel, press and hold INPUT#1 button for 7 seconds. After
releasing the INPUT button the scanning will start automatically.
•To disable from front panel, press and hold INPUT#1 button for 11 seconds. After
releasing the INPUT button the scanning will be stopped.
•To enable or disable from WebGUI, select, or deselect the “Auto Scan Inputs”
option. Then select “Apply Settings” in Config tab.

4x1 4K60 HDMI Switch with Control and Audio Extraction
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4.4 Front Panel Lock
Front panel buttons of SW-HD-4A can be locked via the Web GUI, RS-232, or Telnet to
prevent users from switching or changing modes.
When the front panel lock is enabled, attempts to change the input selection from the front
panel will be ignored.
Note that changes via RS-232, Web GUI and IR Remote control still change the settings.
To re-enable the front panel buttons, send the un-lock or factory default command to the unit
from the Web GUI, RS-232, or via Telnet.
4.5 Factory Default
If the INPUT #4 button is pressed and held for 7 seconds when the unit is operational with the
power already applied, the system parameters are reset to the FACTORY DEFAULT values.
4.6 EDID Settings
The EDID settings can only be changed using RS-232, Telnet, or the Web GUI.
Two settings affect how the EDID is presented to the HDMI source devices. EMx and EDx.
•The default EDID mode (EM0) is to pass the EDID of the SINK connected to the
HDMI OUTPUT to the HDMI INPUT connectors.
oIf the EDID mode is set to EM1, the static emulated EDID selected below
is used.
•If there is no SINK device connected to the HDMI OUTPUT connector, an emulated
EDID (EDx) is presented to the SOURCE device connected to the HDMI INPUT
connectors.
The table below lists each of the emulated EDID tables available.
EDID Setting (EDx)
EDID
Description
0
4K2K@60 2 CH
Built-In EDID with Deep color, 2D3D/ PCM
audio format / 4K2K native resolution
1
4K2K@60 AC3
Built-In EDID with Deep color, 2D3D/ AC3
Digital audio format / 4K2K native resolution
2
4K2K@60 4:2:0 2 CH
Built-In EDID with Deep color, 2D3D/ PCM
audio format / 4K2K 4:2:0 native resolution
3
4K2K@60 4:2:0 AC3
Built-In EDID with Deep color, 2D3D/ AC3
Digital audio format / 4K2K 4:2:0 native
resolution
4
1080P@60 2 CH
Built-In EDID with 8-bit color depth, 2D3D/
PCM audio format /1080p native resolution
5
1080P@60 AC3
Built-In EDID with 8-bit color depth, 2D3D/
AC3 Digital audio format / 1080p native
resolution
6
720P@60 2 CH
Built-In EDID with 8-bit color depth/ 2D3D/
PCM audio format/ 720p native resolution
7
720P@60 AC3
Built-In EDID with 8-bit color depth, 2D3D/
AC3 Digital audio format/ 720p native
resolution

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5.0 Troubleshooting
There are no field serviceable parts or circuits in the device. Opening the unit will void the
warranty.
5.1 Contacting Hall Research
If you determine that the SW-HD-4A is malfunctioning, do not attempt to repair the unit
instead, contact Hall Research Technical Support at 800-959-6439 or
[e-mail].
Before you do, make a record of the history of the problem. We will be able to provide more
efficient and accurate assistance if you have a complete description.
5.2 Shipping and Packaging
If you need to transport or ship your unit:
• Package it carefully. We recommend that you use the original container.
• Before you ship the units back to Hall Research for repair or return, contact us to get a
Return Authorization (RMA) number.
6.0 Specifications
Video Resolution
HDTV signal 480i through 4K/60 4:4:4
DVI//PC signal VGA (640x480) thru WQXGA@30
Video Bandwidth
Up to 18 Gbps total
Audio Standards
LPCM 2/5.1/7.1 CH, Dolby Digital 2-5.1 CH, DTS 2-5.1 CH, Dolby TrueHD and DTS-HD Master Audio
Video Connectors
HDMI (4x INPUT, 1x OUTPUT)
Audio Connectors
3.5 mm Stereo Analog
Optical SPDIF Digital (TOSLINK)
Other Signals
(1) RX, TX and GND on Terminal Strip
RS-232 Baud Rate: 115200, N, 8, 1
USB-Mini for firmware update
(1) RJ45 LAN
ESD Protection
Human Body model:
8 kV (air-gap discharge)
4 kV (contact discharge)
Dimensions
Product: 7.96” (202 mm) W x 2.96” (75 mm) D x 1.15” (29 mm) H
Shipping: 12” W x 10” D x 4” H
Weight
Product: 0.95 lbs (0.43 kg)
Shipping: 2.4 lbs (1.09 kg)
Enclosure
Metal
Operating Temperature
Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, non-condensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, non-condensing
MTBF
90,000 hours calculated estimate
Warranty
3 years parts and labor
IR Remote Protocol
NEC or NEC Extended
IR MUTE ON/OFF
IR POWER ON/OFF
0x00, 0xBF, 0x00, 0xFF
0x00, 0xBF, 0x02, 0xFD
IR INPUT #1
0x00, 0xBF, 0x09, 0xF6
IR INPUT #2
0x00, 0xBF, 0x0D, 0xF2
IR INPUT #3
0x00, 0xBF, 0x11, 0xEE
IR INPUT #4
0x00, 0xBF, 0x15, 0xEA

1163 Warner Ave., Tustin, CA 92780
Ph: [phone]
©Copyright 2021. Hall Research Technologies, LLC.
All rights reserved.