Installation and Setup
56
Instruction Manual – DXLink Fiber Transmitters and Receivers
Duplex Hardware Directional Mode Configuration
The following section applies to DXLink Fiber, Duplex Transmitters and Receivers and describes configuration of the
units for each of the three Directional Modes (Bidirectional, Unidirectional, and Data Link-lost Modes). Directional
Mode refers to the flow of signals and communication data within the system.
Instructions for the configuration of DXLink Fiber, Duplex Input and Output boards are available in the
Instruction
Manual – Enova DGX 8/16/32/64 Digital Media Switchers
at www.amx.com.
Note:
A complete list of Modes is available in the “Quick Reference Tables for Modes
”
section on page 29.
Need to Know for Hardware Configuration
When different pieces of DXLink Fiber, Duplex hardware are in different modes (e.g., a Transmitter in
Bidirectional Mode and a Receiver in Unidirectional Mode or a Transmitter in Unidirectional Mode and its
corresponding input board in Bidirectional Mode) the entire run drops into Data Link-lost Mode until the
hardware is configured for matching modes.
The only way to configure DXLink Fiber, Duplex Transmitters and Receivers for Unidirectional Mode is to
adjust the setting of DIP switch #4 on the bottom of the unit. After setting the DIP switch (ON for
Unidirectional Mode and OFF for Bidirectional Mode), power must be cycled to use in the enabled state.
When Duplex and Simplex hardware are connected, the Duplex hardware will always operate in Data
Link-lost Mode until it is set to Unidirectional Mode.
Configuring Duplex Units for Unidirectional Mode
The following directions apply whether the Duplex unit is in Bidirectional Mode (factory default) or in Data Link-lost
Mode (see following note).
Note:
If the data return path is disconnected while the system is configured for Bidirectional Mode, the system
automatically drops into Data Link-lost Mode.
To configure Duplex units for Unidirectional Mode:
1.
Ensure that the unit is not powered. Disconnect power if necessary.
2.
Flip DIP switch #4 to the ON position (enables Unidirectional Mode).
3.
Apply power to the unit (boots in Unidirectional Mode).
Note:
When cabling a Transmitter and Receiver for Unidirectional Mode, we recommend covering any
unused ports.
Configuring Duplex Units for Bidirectional Mode
When starting from Data Link-lost Mode or Unidirectional Mode, the following instructions explain how to restore
Duplex hardware configuration to Bidirectional Mode (default).
For units beginning in Data Link-lost Mode, simply restore the fiber optic cables that provide the data return path.
The following directions assume that the Duplex unit is in Unidirectional Mode and both fiber cables are connected.
To restore Duplex units to Bidirectional Mode:
1.
Ensure that the unit is not powered. Disconnect power if necessary.
2.
Flip DIP switch #4 to the OFF position (enables Bidirectional Mode).
3.
Apply power to the unit (boots in Bidirectional Mode).
Warning:
DXLink Fiber units use laser transceivers, which are Class 1 Eye Safe per IEC 60825-1/CDRH
requirements. While the Class 1 category indicates that the invisible laser used is safe, we recommend
avoiding direct eye exposure when using any optical fiber products (see the OSHA directive on page 15).
Caution:
In Data Link-lost Mode, the data return path is disconnected but both of the transceiver lasers are
still active. If left uncovered, transceiver lasers may constitute a health hazard. This hazard should be
avoided by restoring Bidirectional Mode (see page 56), configuring DXLink Fiber units for Unidirectional
Mode (see page 56), or covering exposed lasers.
