Extron electronic HDMI DA2 manual Wiring for RS-232Control Optional

If the source requires HDCP encryption and the display is not HDCP compliant, that output channel outputs a green screen.

Both outputs carry +5 VDC and up to 250 mA on pin 18, regulated by a current limiting circuit.

Wiring for RS-232 Control (Optional)

RS-232 communication between the HDMI DA2 and a host PC can be used to update firmware or configure the distribution amplifier using SIS commands (see Command and Response Table for SIS Commands on page 17).

The computer connects to either the rear panel 3-pole RS-232 port (D in figure 2 on page 3) or the front panel USB port (B in figure 7 on page 10) of the distribution amplifier.

NOTES:

•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.

1.Connect an RS-232 cable, such as Extron universal control cable (UC 50' or UC100') to the computer, using a female 9-pin D connector (see figure 3, below):

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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 plug (see figure 3):

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Data transmitted by the HDMI DA2 = pin 1, which plugs into the Tx (transmit) port Data received by the HDMI DA2 = pin 2, which plugs into the Rx (receive) port Ground = pin 3, which plugs into the G (ground) port

NOTES:

•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		Receive	Transmit
			Pin 3	= Tx	Transmit	Receive
9	6		Pin 5	= G	Ground	Ground

DB9 Pin Locations

Female

Computer

Figure 3. Wiring the HDMI DA2 for RS-232 Control

REMOTE

RS-232

Tx Rx G

HDMI DA2

HDMI DA2 • Installation 6