Extron electronics FOX DA8 Plus User Manual page 12

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RS-232 port — For serial control of the DA, connect a host device, such as a computer,
touch panel control, or RS-232 capable PDA, via this 3-pole captive screw connector (see
figure 3 to wire this connector).
RS-232
Tx Rx
Do not tin the wires!
Ground ( )
Receive (Rx)
Transmit (Tx)
NOTE: Cross the Tx and Rx lines once between the source and the target.
Figure 3. RS-232 Connector
NOTES: • The length of exposed wires is critical. The ideal length is 3/16 inches
(5 mm).
• If the stripped section of wire is longer than 3/16 inches, the exposed
wires may touch, causing a short circuit.
• If the stripped section of wire is shorter than 3/16 inches, wires can be
easily pulled out even if tightly fastened by the captive screws.
This port is RS-232 only, with the following protocols:
• 9600 baud
• 1 stop bit
Pin Function
TX Transmit data
RX Receive data
Gnd Signal ground
Controlling
Device
Bidirectional
Ground (
Receive (Rx)
Transmit (Tx)
• no parity
• no flow control
FOX DA8 Plus • Installation and Operation
)
• 8 data bits
6