9.4. RS-232 Signal Management (VINX AP-Series)
9.4.1. 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
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
Among others the pin assignment is different between DTE and DCE.
DTE DCE
Pin 2: RD TD
Pin 3: TD RD
RD: Received Data (digital input)
TD: Transmitted Data (digital output)
Different type of serial cables must be used between different serial devices.
DTE DCE
DTE Null-modem TD
DCE Straight Null-modem*
* In general contact DCE with DCE by tail-circuit serial cable.
9.4.2. Types of Serial Cables
Straight Serial Cable Null-modem Serial Cable
Straight pin-outs both ends.
Straight pin-out at the one end and cross pin-out at
the other end (interchange lines of TX and RX).
Devices may have male or female plugs and their type can be straight or null-modem cables.
ATTENTION! The cable type does not depend on the plug type.
9.4.3. Serial Device Types
The types of VINX devices from serial data transmission point of view are the following:
VINX model Unit type
VINX-120AP-HDMI-ENC, VINX-120AP-HDMI-ENC-DNT,
VINX-210AP-HDMI-ENC
DCE
VINX-110AP-HDMI-DEC DTE
9.4.4. RS-232 Signal Transmission over VINX Devices
type extenders for serial data transmission.
Data Tranmission from a DCE Source to a DCE Sink Device
Data Tranmission from a DCE Source to a DTE Sink Device
Data Tranmission from a DTE Source to a DCE Sink Device
Data Tranmission from a DTE Source to a DTE Sink Device
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