In9370 audio buffer module – Extron Electronics IN2116 User Manual

Page 14

IN9370 AUDIO BUFFER MODULE

The IN2116 can be ordered with a IN9370 audio buffer module. This factory installed optional module
takes an unbalanced stereo audio input, buffers the signal and outputs it as balanced stereo audio. This is
desirable for systems where the IN2116 audio signal will be connected to equipment with balanced audio
inputs, and is helpful in preserving signal integrity and minimizing outside signal interference (which often
occurs while sending the audio signal over lengthy cable runs). The output can also be set for unbalanced
stereo audio if desired.

IN9370 Input Signal Factory Pre-Wiring
In the factory default installation, the IN9370 is pre-wired to accept unbalanced stereo audio input from a
3.5mm stereo mini audio input connector located on one of the four A/V connector modules (any
alternative-wiring / connector configurations must be requested at time of order).

IN9370 Jumper Settings
J2 and J3 set the output for either balanced or unbalanced audio signals. J4 balances or unbalances the left
side audio signal, and J5 balances or unbalances the right. All four jumpers (J2, J3, J4 and J5) need to be set
in the same position.

Balanced Output Signal:

Set J2 / J3 / J4 / J5 to Connect Bottom 2 Pins

Unbalanced Output Signal:

Set J2 / J3 / J4 / J5 to Connect Upper 2 Pins

Note: Connections to J1 and J7 are pre-wired at the factory and may only be modified by trained
technicians. J7 is used for power input, and J1 is the audio input.

IN9370 Output Connector
A balanced or unbalanced stereo audio output signal is provided on a 5-pin captive screw connector. It is
important that connections are made appropriately for balanced or unbalanced output as indicated in the
diagram below:

!WqpÃrq

QrÃBqÃiyr

!WqpÃiyhpx

"$ÃÃHvvÃTrrÃprpv

SvtuÃBq

GrsÃBq

GrsÃ

SvtuÃ

SvtuÃBq

GrsÃBq

GrsÃ

SvtuÃ

GrsÃ

yÃV

7hyhprqÃPÃTvthy)

TrÃE!E"E#E$ГГ8rpГ7Г!ГQv

VihyhprqÃPÃTvthy)

TrÃE!E"E#E$ГГ8rpÃVrÃ!ÃQv

AhpÃ9rshyГvГ7hyhprqÃP