Installation and Setup
58
Instruction Manual – DXLink Fiber Transmitters and Receivers
The illustration in FIG. 24
shows DXLink Fiber units* in Unidirectional Mode with a setup that allows the units IR,
USB, and serial communication via LAN when the system is in Extender Mode. This setup requires that a NetLinx
Central Controller be connected to the LAN.
* The Transmitter and Receiver can be either Duplex configured for Unidirectional Mode or Simplex, which can only
support Unidirectional Mode. In either case, the fiber cable attached to the Transmitter has no data return path.
Wiring for Serial Data Transfer
The RS-232 (serial) ports are the 3-position screw terminal blocks on the rear of the units to the right of the
ICS LAN 10/100 connector. The RS-232 ports can be bound and controlled via an integrated NetLinx Central Controller
in an Enova DGX or via another network connected NetLinx Central Controller.
Note:
On all DXLink Fiber units, the RS-232 connector pinout is “TX - RX - Ground.”
To wire the RS-232 (serial) connectors on the RX/TX for data transfer:
1.
Wire the RS-232 connectors on the units according to the pinout directly above the connector.
2.
Use the command
RXON
to enable this port on the Transmitter and the Receiver. (For complete Serial
SEND_COMMAND programming information, see page 91.)
Serial Control – Endpoint Mode and SEND_COMMANDs
With DXLink Fiber TX/RX Duplex units connected to a switcher (in Endpoint Mode), serial operations in Bidirectional
Mode are handled by the host providing control of the endpoints. The Master’s programming specifies where the serial
commands are sent (this is handled independently from the routing of the video signals). For additional information on
Endpoint Mode, see page 29. For Serial SEND_COMMANDs, see page 91.
Note:
Configuration of serial communication in Unidirectional or Data Link-lost Mode requires additional
information found in “Unidirectional Mode LAN Configuration” on page 60.
FIG. 24
Serial data transfer and IR flow control with hardware in Unidirectional Mode
FIG. 25
Wire RS-232 ports for serial data transfer
Fiber optic cable
AV signal
DXLink Fiber TX
(Unidirectional Mode)
DXLink Fiber RX
(Unidirectional Mode)
AV signal
LAN
Local Area Network
Ethernet**
Ethernet**
** Ethernet transports
IR, Serial, and/or USB
Important:
The fiber cable attached to the TX
and RX only handles audio and video signals in
Unidirectional Mode. The return fiber path is
disabled.
NetLinx Central Controller
RS-232 (serial) connector pinout
TXD
RXD
GND
