FSR SN-4100A - Manual (Page 4)

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INSTALLATION
Connect each of the video sources to video inputs 1through 4.
Connect each of the audio sources to audio inputs 1 through 4. (See diagrams)
Use the diagrams on the following page for “mono” or unbalanced audio
sources.
Connect the input from a control source to the remote input. (If used) Use the
chart on the following page for the remote control pinout.
Connect the supplied AC adapter and plug it into a 117 VAC wall outlet. The
input #1 LED should be lit on power up.
Connect the display device to SN-4100A video output connector.
Connect the SN-4100A audio output to the audio amplifier input and turn on
the amplifier. (see pinout)
The input #1 image should now be appear on the display and #1 audio input
heard through the speakers. Adjust the amplifier for desired audio level
Depressing any of the other input select pushbuttons will display the
respective audio and video input. Adjust each audio source gain controls for
desired audio levels.
Shorting any of the four switch inputs on the DB-9 to pin 5 (ground) will also
switch to that audio and video input. (See pinout)
There is a latching lamp tally output available on the DB-9 connector that
follows the input status leds on the front panel pushbuttons and can be used to
activate external indicators. (See pinout for details)