2
FOXBOX HDMI • Setup Guide (Continued)
f. If you want the FOXBOX HDMI units to pass serial data or control signals, such as for serial control of a
ALARM
Tx Rx 1 2
RS-232
OVER FIBER
projector, connect the primary device to the transmitter and the slave device to the receiver via the left three poles (Tx, Rx,
and _) of the RS-232 Over Fiber/Alarm 5-pole captive screw connectors on both units.
g. For serial control of a unit, connect a host device, such as a computer, to one of the following ports on the unit to be
controlled:
Transmitter or receiver Configuration port — A 2.5 mm mini jack. A TRS RS-232 cable is included with the transmitter.
Receiver Remote RS-232 port — Use the Remote RS-232 3-pole captive screw connector.
The protocol for both of these ports is as follows:
RS-232
•9600 baud •no parity •8 data bits
•1 stop bit •no flow control
h. For remote monitoring of the status of the Rx optical link on either the transmitter or receiver, connect a locally
OVER FIBER
constructed or obtained device to the two right Alarm poles of the RS-232 Over Fiber/Alarm 5-pole captive screw
connector on that unit. The unit shorts both poles together when no light is detected.
Step 3 — Throughput Connections
NOTES:
• See the two fiber cable connection drawings below. You can connect the transmitter and one or more receivers in one of three
ways:
• One way (transmitter to receiver) only, perform step a.
• Two way (transmitter to receiver and return), perform steps a and b.
• One way (transmitter to receiver) with daisy chain (receiver to receiver), perform steps a and c.
• HDCP compliance requires both fiber cables.
a. Connect the fiber between the Tx port on the transmitter and the Rx port on the receiver.
b. If you want the receiver to return serial data (such as responses from a controlled device) to the transmitter, connect a
cable between the Tx port on the receiver and Rx port on the transmitter.
c. If you want a receiver to daisy-chain the optical signal to another receiver (up to 10 receivers in a daisy chain):
•Connect the receiver Tx fiber cable to the Rx port on another receiver.
•Set each receiver to daisy chain mode. See “Return Link and
Daisy Chain Modes,” below.
Operation
After all receivers, the transmitter, and their connected devices
are powered up, the system is fully operational. If any problems
are encountered, verify that the cables are routed and connected properly and that all display devices have identical
resolutions and refresh rates. If problems persist, call the Extron S3 Sales & Technical Support Hotline at the number that is
closest to you.
Return Link and Daisy Chain Modes
The receiver can operate in one of two modes (or both modes can be disabled):
Return link mode — The receiver outputs data on its Tx connector for return to the transmitter.
Daisy chain mode — The receiver daisy-chains its Rx connector input through to its Tx connector output.
Use SIS commands to toggle between return disable, normal, daisy chain modes. Connect a PC to the receiver and issue the following
command: 66*0*n#, where n= 0= disable, 1= enable return link (default mode), and 2= daisy chain enable.
NOTES:
• Up to 10 receivers, each in daisy chain mode, can be connected in a daisy chain to a single transmitter.
• Daisy chain mode works with non-HDCP sources only.
HDMI Audio Switch
This switch mutes (Off position) and unmutes (On position) the embedded audio output on the HDMI output connector.
ON
The audio on the captive screw output always remains active regardless of the setting of this switch.
Receiver
ansmitter
Tx Rx
and
3a
3b
From Transmitter
Receiver
Tx Rx
Tx Rx
3a
3c
