Vorsis VP8 Plus, Application Note

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If using the Analog outputs de-emphasized navigate to the Calibrate
Input/Output screen and select the checkbox for Analog Out Mode: L/R
de-emph (de-emphasized). Then adjust the Analog Output Gain
control to set the correct output level.
If using the AES Digital Outputs, connect it to the equipment being fed
by the VP-8, navigate to the Calibrate Input/Output screen and adjust
the Digital Output level as appropriate. The Digital Output may be
operated either pre-emphasized or de-emphasized.
If using the Composite outputs associated with the rear panel BNC
connectors, connect the VP8 to the exciter’s MPX or baseband input
connector (it’s usually a BNC connector like on the back of VP8). Then
navigate to the Calibrate Input/Output screen, select the checkbox for
Analog MPX, and adjust the TX 1 and TX 2 controls to set the desired
modulation levels.
A note for the techies: When the Analog MPX output mode is selected
the balanced Analog Left/Right outputs are also transmitting composite
stereo, not balanced Left/Right audio as you might expect. If you have
an exciter that provides a balanced composite input (most do, even
though the composite input is a BNC connector) the best signal to
noise performance will be obtained by using the VP-8’s balanced
outputs. Give us a call if you’d like to interface to your exciter using
this method and we’ll walk you through what’s involved.
Note that the control for setting the Diversity Delay (normally
encountered in HD installations) is not present in GUI Lite.
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