Extron Electronics PowerCage FOX Tx_Rx AV User Guide - Manual (Page 14)

RS-232 Connections
c
RS-232 Remote port — The first three poles of the RS-232 Remote 5-pole captive
screw connector are used for RS-232 configuration and control. Wire the connector as
shown below.
Function Pin
Tx
Rx
Gnd
Transmit data
Receive data
Signal ground
Controlling
Device
Ground ( )
Receive (Rx)
Transmit (Tx)
Bidirectional
Tx Rx
Do not tin the wires!
Ground ( )
Receive (Rx)
Transmit (Tx)
Tx Rx
RS-232
OVER FIBER
Figure 5. Rear Panel RS-232 Remote Port
The Remote RS-232 connectors on the rear panels of the transmitter and receiver
enable the units to be configured using SIS commands or the FOX Extenders Control
Program, when it is connected to a control device. (The Over Fiber RS-232 connections
allow pass-through to remote units.)
The protocol for the Tx and Rx ports is 9600 baud, no parity, 8 data bits, 1 stop bit,
and no flow control.
SIS commands
When the PowerCage FOX Tx/Rx AV is configured by RS-232 commands, some
commands are processed by the transmitter and others, by the receiver. The SIS
commands do not distinguish between the two units. The system routes the
commands based on where they are processed.
The following system block diagram shows which functions are processed by the
transmitter and which are processed by the receiver.
Transmitter Receiver
Fiber Link 1
Fiber Link 2
(optional)
Process
Input configuration
Audio gain Process
Color
Tint
Brightness
Contrast
Video mute
Output configuration
Daisy chain/loop out mode
Audio mute
Audio output level
Figure 6. System Block Diagram
PowerCage FOX Tx/Rx AV • Installation and Operation 8