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WHD4
PTN HDMI Switcher 4x1 with Auto-switching
USER MANUAL
Version: WHD42012V1
HDMI Selection Switcher
PTN electronics Limited 2 www.PTN-electronics.com
1 Introduction
WHD4 is a 4x1 HDMI selection switcher with auto-switching, it has four HDMI inputs and one
HDMI output, controllable via buttons, IR and RS232.
It is a high performance HDMI device supporting resolution up to 1920*1200@60Hz, 1080p & 2K,
and supporting EDID and DDC, with HDCP & HDTV compliant.
2 Features
Support high resolution up to 1920x1200@60Hz, 1080p & 2K
Auto-switching available by pressing button INPUT 1
Easy control via buttons, IR & RS232
Compact size aluminium chassis with mounting ears
3 Specification
Input
Output
Input
4 HDMI
Output
1 HDMI
Input Connector
HDMI 1.3
Output Connector
HDMI 1.3
Input Level
T.M.D.S. 2.9V/3.3V
Output Level
T.M.D.S. 2.9V/3.3V
Input Impedence
50Ω
Output Impedence
50Ω
General
Resolution Range
1920x1200, 1080P@60Hz & 2K
Bandwidth
340MHz (10.2Gbit/s)
Switching Speed
1ms (Max.)
Input / Output
Level
T.M.D.S. 2.9V/3.3V
Gain
0dB
Video Impedance
50Ω
EDID / DDC
Supports Extended Display Identification Data (EDID) and Display Data Channel (DDC)
data using DVI and HDMI standards, EDID and DDC signals are actively buffered.
HDCP
Compliant with High-bandwidth Digital Content Protection (HDCP) using DVI and HDMI
1.3 standards. The built-in HDCP management technology can analyze HDCP key, and
realize the handshake internally.
Control Parts
Control/Remote
Buttons
IR remote
RS-232 (9-pin D connector)
Pin Configuration
2 = TX, 3 = RX, 5 = GND
General
Temperature
-20 ~ +70℃
Humidity
10% ~ 90%
Power Supply
100VAC ~ 240VAC, 50/60Hz
Power Consumption
1.3W
Case Dimension
W155 x H30 x D80mm
Product Weight
0.5Kg
HDMI Selection Switcher
PTN electronics Limited 3 www.PTN-electronics.com
4 Auto Switching
WHD4 has auto switching mode and manual switching mode, the former means WHD4 will keep
detecting input signal and switch automatically once detecting a new signal under this mode, and it
follows 3 priority principles:
1st Priority: New input principle
Once detecting a new input signal WHD4 would switch to this new signal automatically. For
example, if WHD4 is displaying signal from input 3, but it would switch to input 4 if you connect
a new source to this input.
2nd Priority: Power rebooting principle
Once rebooting, WHD4 will memorize its last display and switching mode thanks to its power
fail memory function. But WHD4 will detect HDMI input signal again with priority from input 1 to
input 4 once it can’t detect the last input (this happens when you remove the last displaying
signal as it is powered off).
3rd Priority: Signal removing principle
Once removing the current display signal, WHD4 will detect HDMI input signal with priority
from input 1 to input 4.
These two modes can be set by button or by RS232 command (auto switching mode is our factory
default), operations are as below:
1) Button control:
a) By pressing button “INPUT 1” for 3 seconds, you can set WHD4 from auto switching
mode to manual switching mode (“Auto-SW” LED will be off).
b) Same as above operation if you want to set it from manual switching mode to auto
switching mode (“Auto-SW” LED will be on).
2) RS232 control:
a) By sending command 602%, you can set WHD4 from auto switching mode to manual
switching mode (“Auto-SW” LED will be off)
b) By sending command 601%, you can set WHD4 from manual switching mode to auto
switching mode (“Auto-SW” LED will be on)
5 IR Remote
HDMI Selection Switcher
PTN electronics Limited 4 www.PTN-electronics.com
6 RS232 Communication Protocol
Baud rate: 9600 Date bit: 8 Stop bit: 1 Parity bit: none
Command
Function Description
Feedback Code
1B1.
Switching audio/video from input 1 to output
AV: 1 -> 1
2B1.
Switching audio/video from input 2 to output
AV: 2 -> 1
3B1.
Switching audio/video from input 3 to output
AV: 3 -> 1
4B1.
Switching audio/video from input 4 to output
AV: 4 -> 1
0B0.
Mute the output
MUTE
0B1.
UnMute the output
UNMUTE
600%
Checking the working status
AV: 1 -> 1
601%
Auto switching mode
Auto Switch
602%
Manual switching mode
Manual Switch
7 System Diagram
Remarks: For any questions or problems, please try to get help from your local distributor, or email
PTN at:
support@PTN-electronics.com.
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