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5.
Setup.
5.1
Signal Levels.
Turn the input level, output level and line out level controls
to the minimum - fully anticlockwise.
Connect to the equipment to suit your application as
shown in section 3.
Switch off the NEIM1031, all signals will be connected
straight through the unit. Switch on all the other
equipment and select a typical audio signal to be
processed.
If necessary adjust the output of the audio source to the
desired level. If an extension speaker is being used, then
set the level to a comfortable listening level.
Ensure noise cancellation is switched off, and the input
selector switch set to the input being used.
Adjust the input level control on the NEIM1031 until the
red overload LED just illuminates on the peaks of the
audio signal. Reduce the input level slightly.
Adjust the output level control, to the desired level.
The module should now be transparent to the audio
signal. Switching the module on and off, should not
significantly alter the signal level.
5.2 Noise Cancellation.
The noise cancelling switch has 8 positions, starting at 0
through to 7. Level 0 is the minimum, and 7 the maximum.
Switch postions 8 and 9 are not used.
