J-TECH JTECH-4K88-EX-RX, JTECH-4K88-EX Operating Instructions Manual

Operating Instructions

Website: www.jtechdigital.com
Toll Free: 1-888-610-2818[US]

Email: [e-mail]

J-Tech Digital® 4K HDMI Distribution Hub

JTD-ID: 435

The JTECH-4K88-EX 4K HDMI Distribution Hub 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-4K88-EX
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.

SAFETY AND NOTICE

INTRODUCTION .................................................................................................................... 1

PACKAGE LIST ....................................................................................................................... 1

FEATURES ............................................................................................................................. 2

PANEL DESCRIPTION ............................................................................................................. 3

SYSTEM CONNECTION .......................................................................................................... 6

IR REMOTE CONTROL ........................................................................................................... 7

IR PASS-THROUGH CONTROL ................................................................................................ 8

SIGNAL SWITCHING ............................................................................................................ 11

RS232 CONTROL ................................................................................................................. 12

RS232 CONTROL COMMANDS ............................................................................................ 14

TCP/IP CONTROL ................................................................................................................ 23

GUI FOR TCP/IP CONTROL .................................................................................................. 25

GUI UPDATE ....................................................................................................................... 29

EDID MANAGEMENT .......................................................................................................... 30

FIRMWARE UPDATE ............................................................................................................ 31

SPECIFICATION ................................................................................................................... 32

PANEL DRAWING ................................................................................................................ 34

TROUBLESHOOTING & MAINTENANCE ............................................................................... 35

TABLE OF CONTENTS

The kit is a professional 4K HDBaseT HDMI Distribution Hub Kit, which consists of a
4K HDBaseT Matrix Switcher, 7 HDBaseT Receivers and accessories.
The JTECH-4K88-EX is a professional 8x8 HDBaseT Matrix Switcher that consist of
the following inputs and outputs, 8 HDMI IN (4kx2K@60Hz signal at max), 7 IR IN, 1
IR EYE, 8 IR OUT, 1 IR OUT ALL, 7 HDBaseT OUT, 1 HDMI OUT, 1 SPDIF OUT, 1
L&R RCA OUT, and TCP/IP, RS232 control port via phoenix connector.
The JTECH-4K88-EX-RX is an HDBaseT Receiver that consists of the following
inputs and outputs, 1 HDBaseT IN, 1 IR IN, 1 IR OUT and HDMI OUT. The receiver
is powered directly by the Matrix Switcher.
All HDMI inputs can be selected by either the front panel buttons, IR, RS232 or GUI.
The selected source is delivered to HDBaseT zoned outputs 1~7 & HDMI Output.
The Matrix Switcher is capable of delivering 4K signals up to 40m, 1080p up to 70m
and powering the receivers via a single CAT5e cable. It is however recommended to
use good quality CAT6 cable.
The Matrix Switcher supports EDID management and is HDCP 2.2, 1.4 compliant.
Audio sources can be selected via RS232 commands and TCP/IP at the Matrix
Switcher or by 3rd Party control.

4K HDBaseT
Matrix Switcher

 1 x JTECH-4K88-EX 4K HDBaseT Matrix Switcher
 2 x Mounting ears & 6 x Screws
 4 x Trapezoidal Plastic pads
 1 x Power Cord
 8 x IR Receivers
 9 x IR Emitters
 1 x IR Remote
 1 x RS232 cable(Phoenix to DB9)

HDBaseT
Receivers

 7 x JTECH-4K88-EX-RX HDBaseT Receivers
 14 x Mounting ears & 28 x Screws
 28 x Round Plastic pads

 1 x User manual

INTRODUCTION

PACKAGE LIST

1

 HDBaseT Matrix Switcher that features 7 HDBaseT outputs and 1 HDMI output.

 Supports HDCP 2.2, and is backwards compatible with previous version of HDCP

and HDMI.

 Transmits 4Kx2K @ 60Hz 4:2:0 up to 26 ft. (8m) via HDMI port and 131 ft. (40m)

via HDBaseT port.

 7 HDBaseT outputs with distances up to 230 ft. (70m) at 1080p and 131 ft. (40m)

at 4Kx2K on a single Cat5e/6 cable.

 HDBaseT Receivers are powered by the matrix using PoC technology.

 LED indicators show real-time switching status

 Controllable via front panel, RS232, IR and TCP/IP.

 Built-in GUI for TCP/IP control and setup.

 Powerful EDID management.

 Support CEC to control far-end display devices via RS232 commands.

 Features Micro USB port for firmware upgrades.

 Easy installation with rack-mounting design, mounting hardware included.

 Power Supply: Matrix Unit, AC100V~ 240V; Receivers, PoC.

FEATURES

2

HDBaseT Matrix Switcher

Front Panel

No.

Name

Description

①

FIRMWARE

Micro USB port for updating firmware.

②

Power Indicator

Red when DC power present or Standby Mode.

③

INPUTS

8 input selector buttons & 8 green indicators. Numbered

from “1” to “8”.

④

OUTPUTS

8 output selector buttons & 8 green indicators, press
the buttons to switch input cycle for the outputs.

Rear Panel

No.

Name

Description

①

INPUTS

8 x HDMI inputs: Type A female HDMI connector,
connect the source device with an HDMI cable to any
of the HDMI inputs.

②

OUTPUTS

 7 x HDBaseT outputs: The HDBT RJ45 outputs

deliver HD video, Audio and PoC to the HDBaseT
Receiver up to 70m.

 1 x HDMI output: Connect an HDMI cable from the

Matrix Switcher to the displayer.

FIRMWA RE

INPU TS

OUTPU TS

1 2 3 4 5 6 7 8

4K HDMI2.0 8X8 Matrix Extender / JTD-ID:435

1

2

4

3

1 1 2 3 4 5 6 7 8 ALL2 3 4 5 6 7 IR EYE

1 2 3 4

5

6 7 8 1-HDBT 3-HDBT 4- HDBT 5-HD BT 6-HDBT 7- HDBT 8 -HDMI

Tx Rx

RS232 8-SPDI F

L R8

TCP/IP

INPUT S OUTPU TS

IR IN

IR OUT

CONTR OL

AUDIO O UTPU T

1

2

3

4

5

6

7

PANEL DESCRIPTION

3

No.

Name

Description

③

IR IN

 7 x IR IN: Connect with IR receiver, fixed IR input for

the output, cannot be switched separately. It makes
up an IR bi-directional transmission with the IR OUT
on the corresponding HDBaseT receiver.

 1 x IR EYE: Connect with extended IR receiver, use

the IR remote to control the Matrix Switcher.

④

IR OUT

 8 x IR OUT: Plug in IR emitters to deliver the IR signal

sent from the far-end receivers connected to the
HDBaseT ports. These IR OUT sockets make up an
IR matrix with the IR IN sockets on the far-end
receivers, and all can be switched simultaneously with
the AV signal, or separately from switching. In default
setting, the 1~7 IR OUT corresponds with the 1~7 IR
IN, i.e. IR OUT1 - IR IN1, IR OUT2 - IR IN2, …IR
OUT7 - IR IN7.

 1 x IR ALL OUT: Plug in IR emitter to deliver the IR

signal to control input source device form any of
far-end receivers.

⑤

CONTROL

 RS232: Serial port for unit control, 3-pin pluggable

terminal block, connects with control device (e.g. PC).

 TCP/IP: RJ45 port. Connect with PC for Web-based

GUI control.

⑥

AUDIO
OUTPUTS

 SPDIF: Digital audio output connects directly via an

optic fiber cable to the Toslink input on a sound bar.

 RCA (L&R): PCM Analogue audio output sockets

connect the de-embedded audio additional speakers.

⑦

AC100V~240V

Power port, connect with power cord.

PANEL DESCRIPTION

4

HDBaseT Receiver

Front & Rear Panel

No.

Name

Description

①

HDMI OUT

Connect to HDMI display.

②

IR IN

Plug in the IR receiver, this will receive the IR signals
from the RCU and send through to the Matrix Switcher
and then control the desired source.

③

IR OUT

Plug in the IR emitter and attached to the fornt of the
display, this will send the IR signals form the Matrix
Switcher to control the display which is connected to
the HDMI OUT port.

④

Power Indicator

RED when DC power present (PoC).

⑤

TP IN

The RJ45 socket has two LED status indicators. Plug in
the Pre-installed CAT cable in to the HDBT RJ45
socket.

 HDCP: HDCP compliant indicator

OFF: No HDMI traffic (no picture); GREEN: Signals with
HDCP; Blinking GREEN: Signal without HDCP.

 LINK: HDBT Link status indicator

OFF: No Link; YELLOW: Link Successful; Blinking
YELLOW: Link Error.

IR IN IR OUTHDMI OUT

TP IN

LINK HDCP

1

2

3

4

5

PANEL DESCRIPTION

5

Usage Precautions

 Verify 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.

System Diagram

Note:

 Connect HDBT ports of Matrix Switcher and far-end HDBaseT Receivers with

straight-through cable.

 IR receivers connected to IR IN should be with carrier. If not, send

command %0900. or %0901.to activate native carrier mode or force carrier mode

in the IR matrix launched between Matrix Switcher and far-end HDBaseT

Receiver.

1 1 2 3 4 5 6 7 8 ALL2 3 4 5 6 7

IR EYE

1 2

3

4

5 6 7 8

1-HDB T

3-HDB T

4-HDB T

5-HDB T 6-HDBT

7-HDB T

8-HDM I

Tx Rx

RS232 8-SPD IF L R8TCP/IP

INPUT S OUTPU TS

IR IN

IR OUT

CONTR OL

AUDIO O UTPU T

Central Control System

Router iPad

Speaker

Amplifier

Apple RemoteIR Receiver

HDTV

Receiver

HDTV

Remote

IR Receiver

TV RemoteIR Receiver

HDMI:

Audio:

Internet:

Control:

HDBaseT:

SYSTEM CONNECTION

6

IR REMOTE

Connect an IR receiver to the IR EYE port of the Matrix Switcher, users can control it
through the included IR remote. Here is a brief introduction to the IR remote.

① Standby button:

Press it to enter/ exit standby mode.

② INPUTS:

Input channel selection buttons, range from 1~8.

③ OUTPUTS:

Output channel selection buttons, range from 1~8.

④ Menu buttons:

 ALL: Select all outputs.

 EDID management button: Enable input port to

manually capture and learn the EDID data of output

devices.

 CLEAR: Withdraw an operation like switching output

channel, learning EDID data before it comes into

effect. Meanwhile, the matrix will return to the

previous status.

 ENTER: Confirm operation.

INPUTS

OUTPUTS

MENU

1 2

3

4

5

6

7 8

1 2

3

4

5

6

7 8

ALL EDID

CLEAR ENTER

1

2

3

4

IR REMOTE CONTROL

7

By using IR pass-through & HDBaseT transmission technology, the 4K HDBaseT
Matrix Switcher has some functions as follows:

 Control far-end display.

 Control local source device.

Control far-end display

Connect an IR receiver with IR carrier to the IR IN port of the Matrix Switcher; users
can control far-end output displayer via its IR remote from local. In that case, the IR
signal is transferred via twisted pair. Only the corresponding IR OUT port can emit
control signals to the remote display.

See the figure below:

Note: The IR receiver connected to IR IN must be with IR carrier

DVD

IR Remote

HDTV

IR Emitter

Receiver

IR IN IR OUTHDMI OU T

TP IN

LINK HDCP

INPUT S O UTPU TS

IR IN

IR OUT

CONTR OL

AUDIO O UTPU T

1 1 2 3 4 5 6 7 8 ALL2 3 4 5 6 7

IR EYE

1 2

3 4

5

6 7 8

1-HDB T

3-HDB T 4-HDBT 5-HD BT 6-HDBT 7- HDBT 8- HDMI

Tx Rx

RS232 8-SP DIF L R8TCP/I P

IR PASS-THROUGH CONTROL

8

Control local source device.

Connect IR receiver(s) to IR IN on far-end HDBT receiver(s), and IR Emitter(s) to IR
OUT port of the switcher, and use the IR Remote of local source to control the
device remotely.

 1 to 1:

Connect an IR receiver to IR IN on far-end HDBT receiver, and an IR Emitter to IR
OUT port of the switcher. Use the IR Remote of local source to control the device
remotely. See below:

Note: Send command “%0901.” to enter infrared carrier enforcing mode if the IR
Receiver connected to IR IN of the receiver is not with carrier.

DVD

IR Emitter

HDTV

IR Remote

Receiver

HDTV

IR IN IR OUTHDMI OUT

TP IN

LINK HDC P

INPUT S OUTPU TS

IR IN

IR OUT

CONTR OL

AUDIO O UTPUT

1 1 2 3 4 5 6 7 8 ALL2 3 4 5 6 7 IR E YE

1 2

3

4

5 6 7 8

1-HDBT

3-HDBT

4-HDBT

5-HDBT 6-H DBT

7-HDBT

8-HDM I

Tx Rx

RS232 8-SPDIF

L R8

TCP/IP

IR PASS-THROUGH CONTROL

9

 Multiple to Multiple: (IR Matrix):

The 8 “IR OUT” ports and the 7 “IR IN” ports on the far-end receivers make up a 7 x
8 IR matrix. See as below:

The IR signal is sent by IR remote, then it is transferred to HDBaseT receiver, then
to corresponding zone of the matrix through the twisted pair, finally it is transferred to
IR OUT port and received by controlled device.

Switching Operation:

Sending command:[x1]R[x2].

x1: Corresponding to the 8 IR OUT ports of the Matrix Switcher, the IR transmitter

connected to this port can be placed at IR receiving area of output device or the

Matrix Switcher itself.

x2: Corresponding to the zone (receive IR signal from HDBaseT receiver with IR

IN port connects with IR receiver) number of the Matrix Switcher.

→ Example: Send command “3R2.” to transfer IR signal received from zone 2 to IR

OUT port 3.

IR Emitter

DVD

1 2 3 4 5 6 7 8

HDTV

Receiver 1

HDTV

IR IN IR O UTHDMI OUT

TP IN

LINK HDCP

Receiver 2

HDTV

IR IN IR O UTHDMI OUT

TP IN

LINK HDCP

Receiver 3

HDTV

IR IN IR O UTHDMI OUT

TP IN

LINK HDCP

INPUT S OUTPU TS

IR IN

IR OUT

CONTR OL

AUDIO O UTPUT

1 1 2 3 4 5 6 7 8 A LL2 3 4 5 6 7 I R EYE

1 2

3 4 5 6 7 8

1-HDBT

3-HDBT 4-HD BT 5 -HDBT 6-HDB T 7-H DBT 8-HD MI

Tx Rx

RS232 8-SPDI F L R8TCP/IP

IR PASS-THROUGH CONTROL

10

To convert one input to an output

Example: Input 1 to Output 3

→ Press INPUTS 1 + OUTPUTS 3

Note: Default status, on first boot up this matrix assigns the IR outputs to the
corresponding HDMI input, meaning, IR out 1 is directly associated to HDMI input 1
and so on. When you switch an HDMI input to a different output, the corresponding
IR OUT will be switched synchronously to allow the IR commands to be sent from
the select zone back through the Matrix Switcher to the source.

To convert an input to several outputs

Example: Convert Input 2 to Output 3, 4 and 5

→ Press INPUTS 2 + OUTPUTS 3 + OUTPUTS 4 + OUTPUTS 5

To convert an input to all outputs

Example: Input 1 to all Outputs

→ Press INPUTS 1 + ALL + ENTER

SIGNAL SWITCHING

11

RS232 Connection

Except the front control panel, the Matrix Switcher can be controlled by far-end
control system through the RS232 communication port. This RS232 communication
port is a 3-pin phoenix connector. User can use the RS232 cable (Phoenix to 9-pin
D-Sub) to connect the RS232 port to PC, see as below:

RS232 Control Software

 Installation: Copy the control software file to the computer connected with the

Matrix Switcher.

 Uninstallation: Delete all the control software files in corresponding file path.

Basic Settings

Firstly, connect the Matrix Switcher with an input device and an output device. Then,
connect it with a computer which is installed with RS232 control software.
Double-click the software icon to run this software.
Here we take the software CommWatch.exe as example. The icon is showed as
below:

PC

INPUT S OUTP UTS

IR IN

IR OUT CONTR OL AUDIO O UTPU T

1 1 2 3 4 5 6 7 8 ALL2 3 4 5 6 7 IR EYE

1 2 3 4

5

6 7 8 1-H DBT 3-HDB T 4-HDBT

5-HDB T

6-HDB T 7-HDBT 8- HDMI

Tx Rx

RS232 8-SPD IF

L R8

TCP/I P

RS232 CONTROL

12

The interface of the control software is showed as below:

Please set the parameters of COM number, baud rate, data bit, stop bit and the
parity bit correctly, only then will you be able to send command in Command
Sending Area.

Baud rate: 9600
Data bit: 8
Stop bit: 1
Parity bit: none

RS232 CONTROL

Monitoring area, indicates whether the

command sent works.

Command sending area

Parameter Configuration area

13

Note：

 Please disconnect all the twisted pairs before sending command

EDIDUpgrade[X].

 In above commands, “[”and “]” are symbols for easy reading and do not need to

be typed in actual operation.

 Please remember to end the commands with the ending symbols “.” and “;”.

 Type the command carefully, it is case-sensitive.

System Commands

/*Type;

Inquire the models information.

XXXX

/%Lock;

Lock the front panel buttons on the Matrix.

System Locked!

/%Unlock;

Unlock the front panel buttons on the
Matrix.

System Unlock!

/^Version;

Inquire the version of firmware

VX.X.X

Demo.

Switch to the “demo” mode, convert input
and output in turn like1B1, 1B2, …4B3,
4B4, 1B1… and so on .The switching

interval is 2 seconds.

Demo Mode
AV:01->01
IR:01->01
……
AV:08->08
IR:07->07
……

PWON.

Work in normal mode.

PWON

PWOFF.

Enter standby mode and cut off the power
supply to HDBaseT receivers.

PWOFF

STANDBY.

Enter into standby mode. (Do not cut off
the power supply to HDBaseT receivers,
press other buttons or send other
commands to start.)

STANDBY
%0900.

Switch to carrier native mode.

Carrier native

%0901.

Switch to force carrier mode.

Force carrier

%0911.

Reset to factory default.

Factory Default

RS232 CONTROL COMMANDS

14

Signal Switching Commands

[x]All.

Transfer signals from the input channel [x]
to all output channels. (x=1~8)

01To All.

All#.

Transfer all input signals to the
corresponding output channels
respectively like 1->1, 2->2…

All Through.
All$.

Switch off all the output channels.

All Closed.

[x]#.

Transfer signals from the input channel [x]
to the output channel [x].
(x=1~8)

01 Through.
[x]$.

Switch off the output channel [x]. (x=1~8)

01 Closed.

[x]@.

Switch on the output channel [x]. (x=1~8)

02 Open.

All@.

Switch on all output channels.

All Open.

[x1]AV[x2],
[x3], [x4].

Transfer the AV signal from the input
channel [x1] to one or several output
channels [x2], [x3], [x4], separate output
channels with comma). (X1/X2/X3...=1~8)

AV: X1-> X2
(AV: 01-> 04)

[x1]AVR[x2],
[x3], [x4].

Transfer the AV and IR signal from input
channel [x1] to one or several output
channels ([x2], [x3], [x4] separate output
channels with comma). (X1/X2/X3...=1~8)

AV: X1-> X2
(AV: 01-> 04)

[x1] R[x2].

Transfer the IR signal from output [x1] to
input [x2]. (X1、X2=1~8)

IR: X1-> X2
(IR: 01-> 04)

Status[x].

Check the I/O connection status of output
[x]. (x=1~08, y=1~8)

AV: Y-> X
(AV: 02-> 03)

Status.

Inquire the input channel to the output
channels one by one.

AV:08->01
IR:01->01
… …
AV:08->08
IR:08->08

RS232 CONTROL COMMANDS

15

Scene Setting Commands

Save[Y].

Save the present operation to the preset
command [Y], ranges from 0 to 9. (Y=0-9)

Save To F1

Recall[Y].

Recall the preset command [Y]. (Y=0-9)

Recall From F1

Clear[Y].

Clear the preset command [Y]. (Y=0-9)

Clear F1

HDCP Commands

/%[Y]/[X]:[Z].

HDCP management command.
[Y] is for input (value: I) or output (value:
O); [X] is the number of the port, if the
value of X is ALL, it means all ports; [Z] is
for HDCP compliant status, the value may
be 1 (HDCP compliant) or 0 (not HDCP
compliant).

/%[Y]/[X]:[Z].

%0801.

Auto HDCP management, activate carrier
native mode

%0801

Audio Setting Commands

DigitAudioO
N[x]..

 x=1~8, enable HDMI audio output for

the port x.

 x=9, enable HDMI audio output for all

ports.

DigitAudio ON
with ALL Outputs

DigitAudioOF
F[x].

 Disable HDMI audio output of port x.

x=1~8, disable HDMI audio output for
the port x.

 x=9, disable HDMI audio output for all

ports.

DigitAudio OFF
with ALL Outputs

%9977.

Check the status of digital audio of output
channels.

Out 1 2 3 4
Audio Y Y Y Y
Out 5 6 7 8
Audio Y Y Y Y

RS232 CONTROL COMMANDS

16

EDID Management Commands

EDIDH[x]B[y]
.

Input port [y] learns the EDID from output
port [x].
If the EDID data is available and the audio
part supports not only PCM mode, then
force-set it to support PCM mode only. If
the EDID data is not available, then set it
as initialized EDID data.

EDIDH4B3

EDIDPCM[x].

Set the audio part of input port [x] to PCM
format in EDID database. X=1~8.

EDIDPCM1

EDIDG[x].

Get EDID data from output [x] and display
the output port number. X=1~8.

Hexadecimal
EDID data and
carriage return
character

EDIDMInit.

Restore the factory default EDID data of
every input.

EDIDMInit.

EDIDM[X]B[
Y].

Manually EDID switching. Enable input[Y]
to learn the EDID data of output[X]. If the
EDID data is not available, then set it as
initialized EDID data. X/Y=1~8.

EDIDM7B6

EDIDUpgrad
e[x].

Upgrade EDID data via the RS232 port.
[x] is the input port, when the value of X is
9, it means to upgrade all input ports.
When the switcher receives the command,
it will show a message to prompt you to
send EDID file (.bin file). Operations will be
canceled after 10 seconds. Please cut off
all connections of HDBaseT ports.

Please send the
EDID file

EDID/[x]/[y].

Set the EDID data of input port [x] to
built-in EDID No.[y].
[y]=1~6, correspond to the 6 embedded
EDID data separately

EDID/7/1

RS232 CONTROL COMMANDS

17

EDID Management Commands

UpgradeIntE
DID[x].

Upgrade one of the 6 embedded EDID data,
x is the serial number for EDID data:

1) 1080P 2D 2CH

2) 1080P 3D 2CH

3) 1080P 2D Multichannel

4) 1080P 3D Multichannel

5) 3840x2160 2D (30Hz)

6) 3840x2160 2D (60Hz)

When the switcher gets the command, it
will show a message to send EDID file
(.bin file). Operations will be invalid after
10 seconds.

Please send the
EDID file

GetInPortEDI
D[X]

Gain the current EDID data of input [x],
[x]=1~8

GetIntEDID[x
].

Gain the embedded EDID data ranked x,
[x]=1~6

Lock/ unlock Panel Commands

I-Lock[X].

Lock the channel [x], X=1~8.

Channel[x] Lock!

I-UnLock[X].

Unlock the channel [x], X=1~4.

Channel[x]Unlock!

A-Lock.

Lock all channels.

All Channel Lock!

A-UnLock.

Unlock all channels.

All Channel
Unlock!

Lock-Sta.

Check the lock status of all channels.

Channel 1->1
Unlock!
Channel 8->8
Unlock!

%9961.

Check the system locking status.

System Locked/
Unlock!

RS232 CONTROL COMMANDS

18

Control Far-end Device Commands

/+[Y]/[X]:****

**.

Set communication between PC and HDBaseT

receiver.

① Y is for RS232 port (connect with

RS232 port of HDBaseT receiver)
The value of Y is defined into the
following meanings (in a given baud
rate depended by the value of X):

a. Y = 1~8, send this command to the

corresponding HDBaseT receiver to
control far-end device.

b. Y = 9, send this command to all

HDBaseT receivers to control all
far-end devices.

c. Y = A~H, under PWON mode, send

this command to the corresponding
HDBaseT receiver to control far-end
device.

d. Y = a~h, under PWOFF mode, send

this command to the corresponding
HDBaseT receiver to control far-end
device.

② X is for baud rate, its value ranges

from 1 to 7 (1--2400, 2--4800,
3--9600, 4--19200, 5--38400,
6—57600, 7--115200)

③ ***** is for data (max 48 Byte)

/+[Y]/[X]:******

RS232 CONTROL COMMANDS

19

Control Far-end Device Commands

%9951.

Under PWON mode, check the command
which was sent from port 1 to far-end
device.

Port 1: ********
when PWON

%9952.

Under PWON mode, check the command
which was sent from port 2 to far-end
device.

Port 2: ********
when PWON

%9953.

Under PWON mode, check the command
which was sent from port 3 to far-end
device.

Port 3: ********
when PWON

%9954.

Under PWON mode, check the command
which was sent from port 4 to far-end
device.

Port 4: ********
when PWON

%9955.

Under PWON mode, check the command
which was sent from port 5 to far-end
device.

Port 5: ********
when PWON

%9956.

Under PWON mode, check the command
which was sent from port 6 to far-end
device.

Port 6: ********
when PWON

%9957.

Under PWON mode, check the command
which was sent from port 7 to far-end
device.

Port 7: ********
when PWON

%9958.

Under PWON mode, check the command
which was sent from port 8 to far-end
device.

Port 8: ********
when PWON

%9941.

Under PWOFF mode, check the command
which was sent from port 1 to far-end
device.

Port 1: ********
when PWOFF

%9942.

Under PWOFF mode, check the command
which was sent from port 2 to far-end
device.

Port 2: ********
when PWOFF

%9943.

Under PWOFF mode, check the command
which was sent from port 3 to far-end
device.

Port 3: ********
when PWOFF

RS232 CONTROL COMMANDS

20

Control Far-end Device Commands

%9944.

Under PWOFF mode, check the command
which was sent from port 4 to far-end
device.

Port 4: ********
when PWOFF

%9945.

Under PWOFF mode, check the command
which was sent from port 5 to far-end
device.

Port 5: ********
when PWOFF

%9946.

Under PWOFF mode, check the command
which was sent from port 6 to far-end
device.

Port 6: ********
when PWOFF

%9947.

Under PWOFF mode, check the command
which was sent from port 7 to far-end
device.

Port 7: ********
when PWOFF

%9948.

Under PWOFF mode, check the command
which was sent from port 8 to far-end
device.

Port 8: ********
when PWOFF

CEC Commands (These commands below are shown for reference only)

43 45 43 01
36 2E

Turn off the display devices.
43 45 43 01

44 6C 2E

43 45 43 01
04 2E

Turn on the display devices.
43 45 43 01

44 6D 2E

43 45 43 01
44 41 2E

Volume up

43 45 43 01
44 42 2E

Volume down

RS232 CONTROL COMMANDS

21

Query Commands

%9962.

Check the power status

STANDBY/PWOF
F/ PWON

%9963.

Check the working mode of infrared
carrier.

Carrier native/
Force carrier

%9964.

Check the IP address.

IP:192.168.0.178
(default)

%9971.

Check the connection status of the inputs.

In 01 02 03 04
Connect Y Y Y Y
In 05 06 07 08
Connect Y Y Y Y

%9972.

Check the connection status of the
outputs.

Out 01 02 03 04
Connect Y Y Y N
Out 05 06 07 08
Connect N Y Y Y

%9973.

Check the HDCP status of the inputs.

In 01 02 03 04
HDCP Y Y Y N
In 05 06 07 08
HDCP Y Y Y Y

%9974.

Check the HDCP status of the outputs.

Out 01 02 03 04
HDCP Y Y Y Y
In 05 06 07 08
HDCP Y Y Y Y

%9975.

Check the I/O connection status.

Out 01 02 03 04
In 07 07 07 07
Out 05 06 07 08
In 07 07 07 07

%9976.

Check the output resolution.

Resolution
Out 1
1920x1080p
……
Out 8 1920x1080p

%9978.

Check the HDCP compliant status of the
inputs.

In 01 02 03 04
HDCPEN Y Y Y Y
In 05 06 07 08
HDCPEN Y Y Y Y

RS232 CONTROL COMMANDS

22

Besides IR control, RS232 control, the Matrix Switcher boasts option TCP/IP port for
IP control.

Default settings: IP: 192.168.0.178; Subnet Mast: 255.255.255.0; Gateway:

192.168.0.1; Serial Port: 4001.

IP& gateway can be changed as you need, Serial Port cannot be changed.
Connect the Ethernet port of control device and TCP/IP port of the Matrix Switcher,
and set same network segment for the 2 devices, users are able to control the
device via web-based GUI or designed TCP/IP communication software.

Control Modes
The Matrix Switcher can be controlled by PC without Ethernet access or PC(s)
within a LAN.

 Controlled by PC

Connect a computer to the TCP/IP port of the Matrix Switcher, and set its network
segment to the same as the Matrix Switcher’s.

Same network
segment as the
switcher

TCP/IP CONTROL

23

 Controlled by PC(s) in LAN

Connect the Matrix Switcher, a router and several PCs to setup a LAN (as shown in
the following figure). Set the network segment of the Matrix Switcher to the same as
the router’s, then PCs within the LAN are able to control the Matrix Switcher.

Follow the below steps to connect the devices:

Step1. Connect the TCP/IP port of the Matrix Switcher to Ethernet port of PC with

twisted pair.

Step2. Set the PC’s network segment to the same as the Matrix Switcher’s. Do

please remember the PC’s original network segment.

Step3. Set the Matrix Switcher’s network segment to the same as the router.

Step4. Set the PC’s network segment to the original ones.

Step5. Connect the Matrix Switcher and PC(s) to the router. PC(s) within the LAN is

able to control the Matrix Switcher asynchronously.

Then it’s able to control the device via GUI.

Router

Internet

PC

TCP IP Port/

TCP/IP CONTROL

24

The 4K HDBaseT Matrix Switcher provides with built-in GUI for convenient TCP/IP
control. GUI allows users to interact with 4K HDBaseT Matrix Switcher through
graphical icons and visual indicators.
Type 192.168.0.178 in your browser, it will enter the log-in interface shown as
below:

There are 2 selectable usernames – admin (default password: admin) and user
(default password: user). Log in as admin can access more configuration interfaces
than user. Enter username and the right password. Here is a brief introduction to the
interfaces.

GUI FOR TCP/IP CONTROL

25

Main: Interface shown after logging in, provide intuitive I/O connection switching.
See the screenshot below:

The button matrix displays every possible connection between every input and

output, users can carry on the connections by clicking corresponding button.

Buttons 1~9 at the right-bottom corner provides quick saving and recall for overall

switching status.

GUI FOR TCP/IP CONTROL

26

Users: Display or modify credential settings, front panel lock, and GUI version.

If there is any modification, press Save to restore the settings, or press Cancel to
withdraw.

Interface: Modify the title bar label and button label.

GUI FOR TCP/IP CONTROL

27

Configuration: Set HDCP Compliance status for every input, and manage EDID. See
the screenshot below:

Network: Inquire and configure network settings including MAC address, IP address,
subnet mask, and Gateway

GUI FOR TCP/IP CONTROL

28

GUI Update

GUI for 4K HDBaseT Matrix Switcher supports online update in

http://192.168.0.178:100.

Type the username and password (the same as the GUI log-in settings, modified

password will be available only after rebooting) to log in the configuration interface.

After that, click Administration at the source menu to get to Upload Program as

shown below:

Select the desired update file and press Apply, it will start upgrading then.

GUI UPDATE

29

The Matrix Switcher features EDID management to maintain compatibility between
all devices. It can be controlled via EDID learning and EDID invoking.

EDID Learning

The included IR remote can be used to enable the Matrix Switcher to learn the EDID
of all sink devices.

 One input port learns the EDID data of one output port:

Example: Input 2 learns EDID data from output 4
→Press EDID + INPUTS 2 + OUTPUTS 4 + ENTER

 All input ports learn EDID data from one output port:

Example: all input ports learn EDID data from output 4
→Press: EDID + ALL + OUTPUTS 4 + ENTER

EDID Learning

There are six types of embedded EDID data. The chart below illustrated the detailed
information of the embedded EDID data:

No.

EDID Data

1

1080P 2D 2CH

2

1080P 3D 2CH

3

1080P 2D Multichannel

4

1080P 3D Multichannel

5

3840x2160 2D（30Hz）

6

3840x2160 2D（60Hz）

Sending the command “UpgradeIntEDID[x].” via RS232 Control Software to upgrade
the embedded EDID data, x=1~6.

EDID MANAGEMENT

30

The Matrix Switcher boasts a USB port for online firmware upgrade on the front
panel. Follow these steps to upgrade firmware:
Step1. Copy the upgrade software and the latest upgrade file (.bin) to PC.
Step2. Connect the USB ports of the Matrix Switcher and the PC via USB cable.
Step3. Double-click the update software icon (see as below).

It will enter the upgrade interface shown as below:

Step4. Click Connect USB.
Step5. Click Open to load the upgrade file, then click Updata to start firmware
upgrading.

Note: To ensure available control, the COM number of the PC should be 1~9.

FIRMWARE UPDATE

31

4K HDBaseT Matrix Switcher

Video Input

Input

8 HDMI

Input Connector

Female HDMI

Input Level

T.M.D.S. 2.9V~3.3V

Input Impedance

100Ω (Differential)

HDMI Standard

Support 4K@60 4:2:0 & HDCP2.2

Video Output

Output

1 HDMI; 7 HDBaseT

Output Connector

Female HDMI; Female RJ45(with LED indicators)

Output Level

T.M.D.S. 2.9V~3.3V

Output Impedance

100Ω (Differential)

HDMI Standard

Support 4K@60 4:2:0 & HDCP1.4

Video general

Video Signal

HDMI (or DVI-D)

Transmission Distance

1080P@60Hz ≤70m; 4Kx2K@60Hz ≤40m

Resolution Range

Up to 4Kx2K@60Hz

EDID Management

In-built EDID data and manual EDID management

Gain

0 dB

Bandwidth

10.2Gbit/s

Switching Speed

200ns (Max.)

Audio general

Output Signal

Stereo audio; Digital audio

Analog Audio Output

Support PCM

Digital Audio Output

Supports PCM, Dolby, DTS, DTS-HD

Frequency Response

20Hz~20KHz

Output Connector

1 L&R(RCA); 1 SPDIF

Control Parts

Control Ports

8 IR OUT; 1 IR ALL OUT; 7 IR IN; 1 IR EYE;
1 TCP/IP; 1 RS232

Panel Control

Front panel buttons

RS232 Control

3-pin pluggable terminal block

IR

Extended IR receiver

TCP/IP Control

Web-based GUI

General

Power Supply

AC100-240V~, 50/60Hz

Power Consumption

93W (Max)

Operating Temperature

0 ~ +50℃

Relative Humidity

10% ~ 90%

Dimension (W*H*D)

436.4mm x 44.0mm x 300.0 mm

Net weight

2.9Kg

SPECIFICATION

32

HDBaseT Receiver

Input & Output

Input

1 HDBaseT

Input Connector

Female RJ45(with LED indicators);

Output

1 HDMI

Output Connector

Female HDMI

Control

1 IR IN; 1 IR OUT

Control Connector

3.5mm mini jacks

General

Resolution Range

Up to 4K×2K@60Hz

Transmission Mode

HDBaseT

Transmission Distance

1080P@60Hz ≤70m; 4Kx2K@60Hz ≤40m

Bandwidth

10.2Gbps

HDMI Standard

Support HDMI1.4 and HDCP1.4

Operating Temperature

0 ~ +50℃

Relative Humidity

10% ~ 90%

Power Supply

Powered by 4K HDBaseT Matrix Switcher.

Dimension (W*H*D)

61mm x 24mm x 120mm

Net Weight

280g

SPECIFICATION

33

4K HDBaseT Matrix Switcher

HDBaseT Receiver

FIRMWAR E

INPUT S

OUTPU TS

1 2 3 4 5 6 7 8

4K HDMI2.0 8X8 Matrix Extender / JTD-ID:435

1 1 2 3 4 5 6 7 8 ALL2 3 4 5 6 7

IR EYE

1 2 3 4

5

6 7 8 1-HDBT 3-HDBT 4 -HDBT 5-HDBT 6-HD BT 7 -HDBT 8-HD MI

Tx Rx

RS232 8-SPDI F L R8TCP/IP

INPUT S OUTPU TS

IR IN

IR OUT

CONTR OL

AUDIO O UTPUT

436.4 mm

44.0 mm

23.0 mm

IR IN IR OUTHDMI O UT

TP IN

LINK HDCP

120 mm

24 mm

61 mm

Model:JTECH-4K88-EX-RX

Receiver Only

J-Tech Digital 4K HDMI 2.0 8X8 Matrix Extender

Receiver

PANEL DRAWING

34

Problems

Potential Causes

Solutions

Color losing or no
video signal output

The connecting cables may
not be connected correctly or
it may be broken.

Check whether the cables
are connected correctly
and in working condition.

Fail or loose connection

Make sure the connection
is good

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.

Fail or loose connection

Make sure the connection
is good

Input source is with HDCP
while the HDCP compliance
is switched off.

Send command
/%[Y]/[X]:1. or change
HDCP compliance status
in GUI.

The display doesn’t support
the input resolution.

Switch for another input
source or enable the
display to learn the EDID
data of the input.

Cannot control the
device via front
panel buttons

Front panel buttons are
locked.

Send command /%Unlock;
or select unlock in GUI
interface to unlock

Cannot control the
device via IR
remote

The battery has run off.

Change for new battery.

The IR remote is broken.

Send it to authorized
dealer for repairing.

Beyond the effective range of
the IR signal or not pointing at
the IR receiver

Adjust the distance and
angle and point right at the
IR receiver.

The IR receiver connected to
IR IN port is not with carrier

Change for an IR receiver
with carrier.

TROUBLESHOOTING & MAINTENANCE

35

Problems

Potential Causes

Solutions

Power Indicator
remains off when
powered on.

Fail or loose power
connection.

Check whether the cables
are connected correctly

EDID management
does not work
normally.

The HDMI cable is broken
at the output end.

Change for another HDMI
cable which is in good
working condition.

There is a blank
screen on the display
when switching.

The display does not
support the resolution of
the video source.

Switch again.

Manage the EDID data
manually to make the
resolution of the video
source automatically
compliant with the output
resolution.

Cannot control the
device by control
device (e.g. a PC)
through RS232 port.

Wrong connection.

Check to ensure the
connection between the
control device and the unit.

Wrong RS232
communication
parameters.

Type in correct RS232
communication
parameters: Baud rate:
9600; Data bit: 8; Stop bit:
1; Parity bit: none.

Broken RS232 port.

Send it to authorized
dealer for checking.

If your problem persists after following the above troubleshooting steps, seek further
help from authorized dealer or our technical support.

TROUBLESHOOTING & MAINTENANCE

36

Product pictures are for reference only.
Specifications described herein are subject to change without prior notification.
All trademarks are the sole property of their respective companies.
Copyright © J-Tech Digital, Inc. All rights reserved.