Extron electronics DA 2HD 4K PLUS, User Manual

Page: 18 / 42

Connecting RS‑232 Control (Optional)
E
RS-232 port — Use RS‑232 communication between the distribution amplifier
and a host PC to update firmware or configure the unit using SIS commands (see
Command and Response Table for SIS Commands starting on page 29 ).
Extron recommends Extron universal control cable (see www.extron.com ).
NOTES:
• Extron recommends that the USB port is used for temporary connections. If
a permanent connection is required, the RS‑232 port should be used.
• Neither port has precedence and commands from either port are handled in
the order they are received.
RS-232
Tx Rx G
REMOTE
Transmit Receive
Receive Transmit
Ground Ground
DB9 Pin Locations
Female
5 1
9 6
Pin 2 = Rx
Pin 3 = Tx
Pin 5 = G
Computer
DA HD 4K PLUS
Figure 3. Wiring for Rear Panel RS-232 Control
NOTES:
• The wiring in the RS‑232 cable 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.
To connect the distribution amplifier to a computer, follow these instructions:
1. Connect an RS‑232 cable with a female 9‑pin D connector to the computer
(see figure 3):
•
Data received by the computer = pin 2
•
Data transmitted by the computer = pin 3
•
Ground = pin 5
2. Wire the opposite end of the cable to the provided 3‑pole captive screw
connector (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.
figure 3
DA HD 4K PLUS Series • Installation 10