Serial Management; General Information; Types Of Serial Cables; Signal Transmission Over Mx2-Hdmi20 Matrix Switchers - Lightware MX2-8x8-HDMI20-L User Manual

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11. Technologies
11.4. Serial Management
11.4.1. General Information
There are two types of devices in general serial communication:
Data Terminal Equipment: Data Terminal Equipment (DTE) is an end instrument that converts user
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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
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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.
RD: Received Data (digital input)
TD: Transmitted Data (digital output)
Different type of serial cables must be used between different serial devices.
* In general contact DCE with DCE by tail-circuit serial cable.
11.4.2. Types 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.
ATTENTION! The cable type does not depend on the plug type.
DTE DCE
RD TD
Pin 2:
TD RD
Pin 3:
DTE DCE
Null-modem Straight
DTE
Straight Null-modem *
DCE
Null-modem Serial Cable
Straight pin-out at the one end and cross
pin-out at the other end (interchange lines
of TX and RX).
MX2-HDMI20 series – User's Manual
11.4.3. RS-232 Signal Transmission over MX2-HDMI20 Matrix switchers
The following examples describe the detailed integration of Lightware devices between different RS-232 pin
assignment units.
INFO: -R suffixed models in MX2-HDMI20 series are supplied with D-SUB serial connector. These models are DCE
units (according to their pinouts) with female plugs.
Extending RS-232 between DTE and DCE Third-party Devices
Connect straight serial cable between controller system (DTE) and the matrix (DCE).
Pin 2: RD
Pin 3: TD
RS-232 Connection Example between a Controller System and a Matrix Switcher
Extending RS-232 between DTE and DTE Third-party Devices
Connect a null-modem serial cable between a projector (DCE) an a matrix (DCE).
RS-232 Connection Example between a Projector and a Matrix Switcher
Computer MX2 Matrix Switcher
DTE DCE
Straight serial
cable
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POWER
System Settings
Input Ports
IR Output Ports
EDID
Health
MX2-16x16-HDMI20-R RESET Presets
HDMI 2.0 Matrix Switcher
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
C C O O N N T T R R O O L L L L O O C C K K A A U U T T O O A A U U T T O O T T A A K K E E T T A A K K E E
SOURCES
O O U U T T P P U U T T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
L L O O C C K K
DESTINATIONS
Female - Female
Pin 2: TD
Pin 3: RD
Projector MX2 Matrix Switcher
DCE DCE
Null-modem
serial cable
LIVE MAIN MENU
POWER System Settings
Input Ports
Output Ports
IR EDID
Health
MX2-16x16-HDMI20-R HDMI 2.0 Matrix Switcher RESET Presets
C C O O N N T T R R O O L L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
L L O O C C K K
SOURCES
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
O O U U T T P P U U T T L L O O C C K K
DESTINATIONS
Male - Female
Pin 2: TD Pin 2: TD
Pin 3: RD Pin 3: RD
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CTRL USB
P P R R E E S S E E T T L L O O A A D D P P R R E E S S E E T T L L O O A A D D P P R R E E S S E E T T S S A A V V E E P P R R E E S S E E T T S S A A V V E E
CTRL USB
16 T T A A K K E E T T A A K K E E L L O O A A D D L L O O A A D D S S A A V V E E S S A A V V E E
A A U U T T O O A A U U T T O O P P R R E E S S E E T T P P R R E E S S E E T T P P R R E E S S E E T T P P R R E E S S E E T T
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