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FOXBOX Tx / Rx • Installation and Operation 17
Front panel Configuration ports
NOTE: These ports are for remote control of the transmitter or receiver, not for the over
fiber RS-232 link.
The Configuration ports on the transmitter and receiver are 2.5 mm mini stereo jacks. The
9-pin D to 2.5 mm mini jack TRS RS-232 cable (figure 10), included with transmitters, can
be used for this connection.
6 feet
(1.8 m)
5
1
9
6
Sleeve (Gnd)
Ring
Tip
9-pin D Connection TRS Plug
Pin 2 Rx line on the computer Tip
Pin 3 Tx line on the computer Ring
Pin 5 Signal ground on the computer Sleeve
Figure 10. 9-pin TRS RS-232 Cable
This port is RS-232 only, with the following protocols:
• 9600 baud • no parity • 8 data bits
• 1 stop bit • no flow control
NOTE: The maximum distances from the transmitter or receiver to the controlling
device can vary up to 200 feet (61 meters). Factors such as cable gauge, baud rates,
environment, and output levels (from the unit and the controlling device) all affect
transmission distance. Distances of about 50 feet (15 meters) are typically not a
problem. In some cases, the unit may be capable of serial communications via RS-232
up to 250 feet (76 meters) away.
See
Remote Control
on page 20 for definitions of the SIS commands (serial commands to
control the transmitter via this connector) and software control.