Extron electronic FOX 2G Tx manual Audio Connections, Audio connections

Installation and Setup, cont’d

Audio Connections

Audio input to the FOX 2G Tx AV and audio output from the FOX 2G Rx AV are made through the 3.5 mm, 5-pole, captive screw connectors. Input and output can be mono or stereo and can be balanced or unbalanced, depending on the wiring connections (see figure below).

Do not tin the wires!

Tip	L	Tip
Ring		Sleeve
Sleeves		Tip
Tip	R
Ring		Sleeve

Balanced Audio Unbalanced Audio

Figure 2-9 — Audio connections

L R

NThe length of the exposed wires in the stripping process is critical. The ideal length is 3/16” (5 mm). Any longer and the exposed wires may touch, causing a short circuit between them. Any shorter and the wires can be easily pulled out even if tightly fastened by the captive screws.

CDo not tin the wires. Tinned wire does not hold its shape and can become loose over time.

The table below shows the initial gain differences between audio input/output connectors, using captive screw connectors. The unbalanced output from the captive screw connector will be half (-6 dB), regardless of input.

Input	Output	Gain
Balanced	Balanced	0 dB (unity)
Balanced	Unbalanced	-6 dB (half)
Unbalanced	Balanced	0 dB
Unbalanced	Unbalanced	-6 dB

Additional adjustment of audio gain/attenuation can be made using SIS commands (see page 3-8).

NThe Audio LED lights up immediately when the transmitter detects an audio signal 35 dB below the nominal level. It remains lit until the audio signal drops below that threshold continuously for 10 seconds.

2-12 FOX 2G Tx/Rx AV • Installation and Setup