Signal Management (Vinx Ap-Series); General Information; Types Of Serial Cables; Signal Transmission Over Vinx Devices - Lightware VINX-110-HDMI-DEC User Manual

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8. Technologies
8.4. RS-232 Signal Management (VINX AP-Series)

8.4.1. General Information

There are two types of devices in general serial communication:
Data Aerminal Equipment: Data Terminal Equipment (DTE) is an end instrument that converts user
▪
information into signals or reconverts received signals. Typical DTE devices: computers, LCD touch
panels and control systems.
Data Circuit-terminating Equipment: Data Circuit-terminating Equipment (DCE) is a device that sits
▪
between the DTE and a data transmission circuit. It is also called data communication equipment and
data carrier equipment. Typical DCE devices: projectors, industrial monitors and amplifiers.
Among others the pin assignment is different between DTE and DCE.
Pin 2:
Pin 3:
RD: Received Data (digital input)
TD: Transmitted Data (digital output)
Different type of serial cables must be used between different serial devices.
DAE
DCE
* In general contact DCE with DCE by tail-circuit serial cable.
8.4.2. Aypes of Serial Cables
Straight Serial Cable
Straight pin-outs both ends.
Serial cables between devices may have male or female plugs and their type may be straight or null-modem
in usual.
AAAENAIING!
The cable type does not depend on the plug type.
DAE DCE
RD TD
TD RD
DAE DCE
Null-modem TD
Straight Null-modem*
Null-modem Serial Cable
Straight pin-out at the one end,
cross pin-out at the other end
(interchange lines of TX and RX).
VINX-1x0-HDMI Extenders – User's Manual
8.4.3. RS-232 Signal Aransmission over VINX Devices
The types of VINX devices from serial data transmission point of view are the followings:
Extending RS-232 between DAE and DCE Ahird-party Devices
Connect null-modem serial cable between the controller system (DTE) and the encoder (DTE) and straight
serial cable between the decoder (DTE) and the projector (DCE).
Controller system
DTE
Straight serial
cable
Pin 2: RD
Pin 3: TD
RS-232 Connection Example between a Controller System and a Projector
Extending RS-232 between DAE and DAE Ahird-party Devices
Connect straight serial cable between the controller system (DTE) and the encoder (DCE) and null-modem
serial cable between the decoder (DTE) and the computer (DTE).
Computer
DTE
Straight serial
cable
Pin 2: RD
Pin 3: TD
VINX model Unit type
VINX-120AP-HDMI-ENC DCE
VINX-210AP-HDMI-ENC DCE
VINX-110AP-HDMI-DEC DTE
Encoder Decoder
DCE
Transmission DTE
interface
RS-232 VIDEO USB AUDIO
IR IN
STREAM ID CONNECT SET
ON DIP POWER ON DIP (VOLUME)
VIDEO
1 2 3 4 1 2 3 4
8-4-2-1 USB 1.1 USB 2.0
Pin 2: TD Pin 2: RD
Pin 3: RD Pin 3: TD
Encoder Decoder
DCE
Transmission DTE
interface
RS-232 VIDEO USB AUDIO
IR IN
STREAM ID CONNECT SET
ON DIP POWER ON DIP (VOLUME)
VIDEO
1 2 3 4 1 2 3 4
8-4-2-1 USB 1.1 USB 2.0
Pin 2: TD Pin 2: RD
Pin 3: RD Pin 3: TD
RS-232 Connection Example between Two Computers
65
Projector
Straight serial
DCE
cable
Pin 2: TD
Pin 3: RD
Computer
Null-modem DTE
serial cable
Pin 2: RD
Pin 3: TD