PJP-EC200 Setup Procedure
13
learning).
* During the measurement, the microphone picks up test tones output from
the speakers. To achieve the best result, keep the room as quiet as possible
during the measurement.
3)
If you hear the audio guidance “Normally Completed”, the auto analyzer
process (measurement and automatic setup) is properly completed. If you
hear any other guidance, adjust the input gain or other settings by
following the guidance and then perform the procedures 1) and 2) again.
2.
Adjust the echo canceller settings.
1)
Ask the other end to check that echoes are not generated after he/she talks.
When using a tie-pin microphone or a handheld microphone on your side,
keep the microphone moving in the actual conference room and then ask
the other end to check that echoes are not generated after he/she talks.
2)
If echoes are generated, set the DIP switch
④
(EC TYPE) to “2” (see step 8
in “Setup”) and then ask the other end to recheck.
3)
If echoes are still generated, turn down the speaker level of your PC or
webconference system or decrease the microphone gain of this unit.
3.
Configure the feedback suppressor settings.
1)
Perform the environment learning of the feedback suppressor.
i.
Set the microphone gain slightly higher than the threshold level (start
of acoustic feedback generation).
ii.
Acoustic feedback will be repeatedly generated and stopped. If the CLIP
LED (red) turns on continuously in the process, decrease the
microphone gain to reduce the acoustic feedback generation.
iii.
If acoustic feedback generation is completely stopped, set the
microphone gain to the original level.
2)
If acoustic feedback is still generated, set “Level” of “Feedback Suppressor”
to “-18dB” and then perform the procedure 1) again. However, this setting
may affect the quality of sounds output through the public-address system.
3)
In addition, to control acoustic feedback immediately, set “Band width” of
“Feedback Suppressor” to “1/60oct”. For more effectiveness, set it to
“1/10oct”. However, this setting may affect the quality of sounds output
through the public-address system.
