
Operating Instructions
Website: www.jtechdigital.com
Toll Free: 1-888-610-2818
Email: support@jtechdigital.com
USER MANUAL
J-Tech Digital® Bi-Direction 3x1 HDMI 2.0 Switch
Model: JTECH-BS31
JTD-ID: 372

The Bi-Direction 3x1 HDMI 2.0 Switch Control Path has been tested for conformity
to safety regulations and requirements, and has been certified for international use.
However, like all electronic equipment, the JTECH-BS31 should be used with care.
Please read and follow the safety instructions to protect yourself from possible injury
and to minimize the risk of damage to the unit.
Follow all instructions and warnings marked on this unit.
Do not attempt to service this unit yourself, except where explained in this
manual.
Provide proper ventilation, air circulation, and do not use near water.
Keep objects that might damage the device away and assure that the placement
of this unit is on a stable surface.
Use only the power adapter, power cords, and connection cables designed for
this unit.
Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power
to the device before cleaning.

INTRODUCTION ....................................................................................................... 1
PACKAGE LIST ......................................................................................................... 1
FEATURES................................................................................................................ 1
PANEL DESCRIPTION ............................................................................................. 2
SYSTEM CONNECTION ........................................................................................... 3
SPECIFICATION ....................................................................................................... 4
PANEL DRAWING .................................................................................................... 5
TROUBLESHOOTING & MAINTENANCE ................................................................ 6

The JTECH-BS31 is an ultra-thin bi-direction 3x1 HDMI 2.0 switch with 4 HDMI ports.
The switcher supports HDMI resolutions up to 4K@60Hz 4:4:4.
1x JTECH-BS31 Bi-Direction 3x1 HDMI 2.0 Switch
1x Velcro Tape
1x User Manual
Note: Please contact your distributor immediately if any damage or defect in the
components is found.
Supports HDMI2.0 4k@60Hz 4:4:4.
HDCP2.2 compliant.
Supports bi-directional switching.
Supports HDR.
Supports Hot-Plug detection.
No need of external power supply.

1. SWITCH: Press this button to switch 1-HDMI, 2-HDMI, or 3-HDMI as input or
output.
2. IIN/OUT: Press this button to select the HDMI(③) as input or output.
3. HDMI: Connect with HDMI source or display.
4. IN: Illuminates blue when the HDMI port(③) is selected as input.
5. OUT: Illuminates blue when the HDMI port(③) is selected as output.
6. 1/2/3-Signal LED: Illuminates blue when the corresponding source or display is
selected.
7. 1/2/3-HDMI: 3 HDMI ports, connect with sources or displays.
SWITCH
HDMI
1 2 3
IN/OUT
OUT
IN
1-HDMI 2-HDMI 3-HDMI
1
2
3
4
5
6
7

Usage Precautions
Make sure all components and accessories included before installation.
System should be installed in a clean environment with proper temperature and
humidity.
All of the power switches, plugs, sockets, and power cords should be insulated
and safe.
All devices should be connected before power on.
1-HDMI 2-HDMI 3-HDMI
HDMI IN:
HDMI OUT:
1-HDMI 2-HDMI 3-HDMI
Blu-Ray
Projector HDTV WhiteBoard
HDTV
Blu-Ray Laptop Game Console

(1) 19-pin type-A female HDMI

1-HDMI 2-HDMI 3-HDMI
HDMI 2.0 3x1, 1x3 Bi-directional Switcher
SWITCH
HDMI
1 2
3
IN/OUT OUTIN
86 mm
16 mm
55 mm

Output images in
display show with
ghost
Incorrect setting on the
display
Check the display’s setting
Try another high quality
connection cable
No output image when
switching
No signal at the input /
output end
Check with oscilloscope or
multimeter if there is any
signal at the input / output
end.
Make sure the connection is
good
Send it to authorized dealer
for repairing.
Note: If your problem persists after following the above troubleshooting steps, seek
further help from authorized dealer or our technical support.
TROUBLESHOOTING & MAINTENANCE

Product pictures are for reference only.
Specifications, pictures & software described herein are subject to change without prior notification.
Only use the provided power supply when operating this unit. J-Tech Digital® is not responsible for any damage
due to customer neglect.
All trademarks are the sole property of their respective companies.
Copyright ©J-Tech Digital, Inc. All rights reserved.