J-Tech Digital JTECH-VWM90 User manual

5 Input | 3x3 video wall w/ rotation
JTD-2921 | JTECH-VWM90
USER MANUAL
J-TECH DIGITAL INC.
9807 EMILY LANE
STAFFORD, TX 77477
TEL: [phone]
E-MAIL: [email protected]

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Table of Contents
1. Product Overview..................................................................................... 3
1.1 Product Features......................................................................................................... 3
1.2 Specifications............................................................................................................. 3
2. Operation Instructions.............................................................................. 4
2.1 Product Panel Description ........................................................................................... 4
2.2 Remote Control Button Guide ...................................................................................... 7
2.3 Remote Control Operation Instructions........................................................................ 10
2.4 RS232 Control (Serial Port Instructions)..................................................................... 11
2.5 Description of Serial Port Instruction set..................................................................... 11
3. Product Connection Diagram................................................................... 13
3.1 Instructions for a single unit ...................................................................................... 13
3.2 Instructions for cascading two units ........................................................................... 14
3.3 Instructions for cascading three units ......................................................................... 15
3.4 Definition of Rows and Columns................................................................................. 16
4. Supported Resolutions .......................................................................... 16
5. Common Problems................................................................................ 18
6. Appendix ............................................................................................. 19
7. Product Service .................................................................................... 20
8. Warranty.............................................................................................. 20
9. Mail-In Service..................................................................................... 20
10. Limited Warranty Limits and Exclusions ................................................. 21
11. Extended Warranty............................................................................... 21

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1. Product Overview
1.1 Product Features
JTECH-VWM90 is an Ultra-HD Rotary Splicer Video Wall controller by J-Tech Digital. It supports 4
HDMI inputs (1 HDMI Port supports 4K@60Hz, 3 HDMI Ports support 4K@30Hz), 1 DP input
(4K@60Hz), 9 HDMI outputs (1080P@60Hz), and 1 DP local loop out. There is support for multiple
splicing modes, such as horizontal screen, vertical screen, 2x2, and the unit supports large-scale
cascading and parallel use in form of loop-out. The unit can open 4 windows on the whole screen at
once, and support multiple window-opening modes such as, single screen, PIP double screen, double
screen, and 4 picture segmentation.
The inputs support full screen rotation of 90° (only supported in single-picture mode), and the
output supports 180° rotation of the first line (only supported when the stitching mode is two lines).
The input source doesn’t need to be compressed, and there is no stretching or deformation ensuring
that the picture is clear.
The unit utilizes low power consumption and is energy saving. Conductive heat dissipation is used
internally without any external heat dissipating measures making the reliability of the unit extremely
high.
JTECH-VWM90 utilizes 40nm high-end programmable FPGA chip, full hardware real-time processing
architecture resulting in ultra-fast processing speed without delay.
1.2 Specifications
Product Name
JTECH-VWM90
Input Max. Pixel FPS
600MHz
Input Max. Resolution
3840*2160@60hz
DP Port Count & Version
1 Port Display Port 1.2
HDMI Input Port Count & Version
1 Port HDMI 2.0 | 3 Ports HDMI 1.4
Output Max. Pixel FPS
165MHz
Output Max. Resolution
1920*1080@60Hz
HDMI Output Port Count & Version
9 Ports HDMI 1.4
Loop-out Port & Version
1 Port Display Port 1.2

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Audio Output
3.5mm Headphone
Control Method
Remote Control, RS232 Serial Port (Can be
looped out)
Factory Default Resolution
HDMI: 3840*2160@60Hz
DP: 3840*2160@60Hz
Custom Resolution Support
Yes
Default IP Address
192.168.1.192
Default WebGUI Password
admin1
Operating Temperature
0°C –50°C | 32°F –122°F
Power Consumption
12W
Power Supply
12V@2A AC-DC
Weight
1.85lbs
Size
270mm * 122.5mm * 20mm
10.63” * 4.82” * 0.79”
Included Accessories
1 x DP Cable | 1 x Power Adapter | 1 x
Remote Control
Warranty
One Year
2. Operation Instructions
2.1 Product Panel Description

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A. RS232 Control Loop Out –Used in cascade mode to loop out RS232 commands to the next
device
B. Network Interface –TCP network protocol used for control system to issue instruction to control
the device (Default IP Address: 192.168.1.192 | Default Web Login Password: admin1)
C. RS232 Input –Used to issue RS232 commands to the device
D. DIP Switch (Board ID) –Indicates the ID of the current device in cascade mode. For detailed
settings, see Note 1 below
E. IR Port –Used for receiving remote control signals. Needs external IR receiver
F, G, H, I –4 HDMI input ports. Input Port “I”supports 4K@60Hz maximum resolution, while ports
“F/G/H”support maximum 4K@30Hz. The LED lights next to each HDMI interface indicates an
active signal input
J. 1 DP input interface. Supports 4K@60Hz
K. 3.5mm Audio out interface for external audio devices
L. DP local loop-out. When multiple devices are cascaded, this port acts as the DP input source for
other JTECH-VWM90 devices. The LED light next to this interface indicates that there is a loop-out
signal output
(In single screen mode, the loop-out follows the selection of the input source channel to switch. In
non-single screen mode, only the loop-out DP signal is supported)
M. Power switch
JTECH-VWM90 –rear panel
N. Power Interface –Connect to the provided 12V@2A AC-DC power supply. LED indicator next to
the interface is an indicator of the device receiving power
O - W. 9 HDMI output ports. The LED lights next to each HDMI interface indicates an active output
signal

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Note 1: DIP switch, when cascading, will indicated the ID number of the current device which is set
in binary.

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2.2 Remote Control Button Guide

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Ent
Confirm Key
Esc
Escape Key
Row
Set Splicing Mode: Row (Range 1-16)
Col
Set Splicing Mode: Column (Range 1-16)
Win
Window: The number of each screen (window)
in “whole screen”. See Note 2 at the end of
this table for details
Src
Source: Enter the number of the source, 1 for
HDMI, 2 for DP
+
Cooperation【↔↕ Zoom] to realize the
function of "move left / right / zoom in / zoom
out" of small window in picture
-
Cooperation【↔↕ Zoom] to realize the
function of "move left / right / zoom in / zoom
out" of small window in picture
↔↕ zoom
Picture in picture
Menu to move small window left & right
Menu to move small window up & down
Menu to zoom in & out for the small window
Four Pictures (Select the input source
displayed on the screen through the [Win /
Src] button
Double Screen: Left & Right →up & down
(Select the input source displayed on the
screen through the [Win / Src] button
Single screen rotation
HDMI 1 →HDMI 2 →HDMI 3 --< HDMI 4 →
DP
R90°
Rotate the whole input image 90 ° (only in
the case of single image)
R180°
First line output image rotated 180 ° (only in
case of 2 lines)
Clone
Clone mode: copy display (1x1) for each
output port

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Note 2: [Win] key meaning: The number of each screen (window) in the “whole screen”, the
corresponding position is as follows:
Single Screen Mode: There is only one screen, and the value is fixed as number 1, as shown below:
Double Picture (PIP Mode): The face value of the large picture is No.1, and the value of the small picture is
No. 2 as shown below:
Double Picture (Left Right Mode): The left screen value is No.1, and the right screen value is No.2 as shown
below:
Double Picture (Up Down Mode): The upper screen value is No.1, and the lower screen value is No. 2 as
shown below:
A
A
B
A
B
A
B

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Four Screen Mode: The value of the upper left screen is No. 1. The value of the lower left screen is No.2. The
value of the upper right screen is No. 3. The value of the lower right screen is No.4, as shown below:
2.3 Remote Control Operation Instructions
The adjustment of the following two groups of parameters needs to press the [Ent] confirmation key
to take effect, and the [Esc] cancel key can be pressed when the parameter setting needs to be
cancelled.
1. [ROW, COL] is a group to adjust the output splicing mode. You can confirm the value by viewing
the OSD display information in the upper left corner of the whole screen. For example: if you need to
adjust to 2x3 (two rows and three columns) splicing mode, you need to set [row] to 2, and [COL] to
3. Press [Ent] to confirm, and then the splicing mode will be changed to 2x3.
2. [Src, Win] is a group. The purpose is to arbitrarily specify the input source channel of each screen
(window) in the "whole screen". You can confirm the value by viewing the OSD display information in
the "upper left corner of the whole screen".
For example: Currently, it is [ ] PIP mode,HDMI is displayed in large screen window and DP is
displayed in small screen window by default.If you need to adjust the large screen window to DP and
the small screen window to HDMI,Then you need to set [Win] to “1”(window No. 1 means large
screen window), [Src] is “2” (2 means DP input)，After pressing the [Ent] confirmation key，The
large screen window can be switched to DP signal source.Set【Win】to “2”（window No. 1 means
small screen window），set【Src】to “1”（2 means HDMI input），After pressing the [Ent]
confirmation key，The small screen window can be switched to HDMI signal source.