FOXBOX 4G Tx/Rx • Installation and Operation
Installation and Operation, cont’d
2-16
FOXBOX 4G Tx/Rx • Installation and Operation
2-17
Front panel Configuration ports
N
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
on 2.5 mm mini stereo jacks. The 9-pin D to 2.5 mm mini jack
TRS RS-232 cable, part #
70-335-01
(figure 2-10), included with
transmitters, can be used for this connection.
6 feet
(1.8 m)
Part #70-335-01
5
1
9
6
Sleeve (Gnd)
Ring
Tip
9-pin D
Connection
TRS Plug
Pin 2
Computer's RX line
Tip
Pin 3
Computer's TX line
Ring
Pin 5
Computer's signal ground
Sleeve
Figure 2-10 — 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
N
The maximum distances from the transmitter or receiver
to the controlling device can vary up to 200' (61 m).
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' (15 m) are typically not a problem. In some
cases, the unit may be capable of serial communications
via RS-232 up to 250' (76 m) away.
See chapter 3, "Remote Control", for definitions of the SIS
commands (serial commands to control the transmitter via this
connector)
and Windows-based program control
.
Power supply wiring
Figure 2-11 shows how to wire the power connector.
SECTION A–A
2-Pole Captive Screw
Connector (12V)
Tie Wrap
3/16”
(5 mm) Max.
Power Supply
Output
Cord
Ridges
Smooth
A
A
Figure 2-11 — Power connector wiring
C
Power supply voltage polarity is critical. Incorrect
voltage polarity can damage the power supply
and the unit. The ridges on the side of the cord
(figure 2-11) identify the power cord negative lead.
To verify the polarity before connection, plug in the power
supply with no load and check the output with a voltmeter.
W
The two power cord wires must be kept separate
while the power supply is plugged in. Remove
power before wiring.
C
The length of the exposed (stripped) wires is
important
. The ideal length is 3/16" (5 mm).
Longer bare wires can short together. Shorter wires
are not as secure in the connectors and could pull out.
N
Do not tin the leads before inserting them in the
connector. Tinned wires are not as secure and could be
pulled out.
Use the supplied tie-wrap to strap the power cord to the
extended tail of the connector.
Alternatively, an optional Extron PS 123 Universal 12 VDC
Power Supply, part #
60-814-01
, can power multiple Extron
12 VDC devices using only one AC power connector.
