Wiring For Rs-232 Control (Optional) - Extron electronics HDMI DA Series User Manual

Wiring for RS-232 Control (Optional)

RS-232 communication between the distibution amplifier and a host PC can be used to
update firmware or configure the unit using SIS commands (see
Table for SIS Commands
The computer connects to either the rear panel 3-pole RS-232 port
or the front panel USB port
NOTES:
1.
2.
NOTES:
DB9 Pin Locations
Figure 3.
on page 19).
(figure
•
Neither port has precedence and commands from either port are handled in the
order they are received.
•
Extron recommends that the USB port is used for temporary connections. If a
permanent connection is required, the RS-232 port should be used.
Connect an RS-232 cable, such as Extron universal control cable (UC 50' or UC 100') to
the computer, using a female 9-pin D connector (see figure 3):
• Data received by the computer = pin 2
•
Data transmitted by the computer = pin 3
•
Ground = pin 5
Wire the opposite end of the cable to the provided 3-pole captive screw plug (see
figure 3):
•
Data transmitted by the DA plugs into the Tx (transmit) port
•
Data received by the DA plugs into the Rx (receive) port
•
Ground plugs into the G (ground) port
•
The wiring in the RS-232 cables crosses over so that the Tx on the distribution
amplifier connects to the Rx of the control device and vice versa. Ground always
connects to ground.
•
If you use cable that has a drain wire, tie the drain wire to the ground at both ends.
5 1
Pin 2 = Rx
Pin 3 = Tx
Pin 5 = G
9 6
Female
Computer
Wiring the HDMI DA4 and HDMI DA6 for RS-232 Control
7, on page 11) of the distribution amplifier.
B
Receive Transmit
Transmit Receive
Ground Ground
HDMI DA Series • Installation
Command and Response
(figure 2, E on page 4)
REMOTE
RS-232
Tx Rx G
HDMI DA2
8