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Setting sensitivity, Adc check, What next – Meridian Audio 565 User Manual

Page 47

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Calibrating the system

43

ADC Check

This test provides metering to help you set the level of the

analogue inputs. The analogue-to-digital converter (ADC) fitted

for the analogue input to the 565 has a sensitivity of 2V rms for

full scale. With this setting, the analogue input can be connected

to the output of a LaserDisc or CD player and will not require

adjustment. If the analogue signal comes from a preamplifier or

control unit, then it is important to ensure that the internal ADC

is not overloaded.

In this calibration test the display

shows:

ADC Check

The digital surround processor selects its analogue input, and

replays the signal through the speakers.

The display shows when the input level

comes within 3dB of full scale:

Over

Play any analogue source, or sources connected via an ancillary

preamplifier or switchbox, choosing the loudest material. The

input signal level should be adjusted so that the Over display

hardly ever occurs.

What next?

Congratulations – your 565 Digital Sound Processor is now set

up and ready for use. Refer to the user’s guide for information

about using the digital surround processor with your music and

cinema sources.

The remaining chapters in this guide give more advanced

information about configuring the digital surround processor’s

sources, and further reference and troubleshooting information.