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NEDSP1061-KBD Operating Manual
6.3.2 Demonstration 2:
Follow the procedure for 6.3.1. Wait for the second 2 tone
beep, then release the key.
In this mode the filter level is set to level 3.
The noise cancellation is switched on for 3 seconds, then
off for 3 seconds. This loops until the user aborts this mode.
This is a good demonstration for listening noisy SSB
conversations showing the before and after.
6.3.3
Filter Level Select:
After the 3rd two tone beep the filter level pre-sets at
level 4 in 8 level mode, release the button to select this
mode. After the fourth 2 tone beep the module enters
the filter level select mode. Release the button after
either the 4 or 8 beeps to select the desired level mode.
The module will return to normal operation after this, or
hold down the button until the 2 tone beep is heard.
Release the button, after a short delay the LED will flash
indicating the stored level, as during the normal switch
on.
6.4
Notes about the noise reduction.
When using the module on level 4/4 or level 8/8 some
distortion
may be heard. This is quite normal when listening
to weak signals with high levels of noise present.
6.5
Noise reduction levels.
6.
Operation.
