Vingtor Stentofon 1021001100, Installation & User Manual

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A100K11209 v.1.4
VSS-V2 Technical Manual
10.7 Direction indication wrong
If there’s still no activity, check the cable from the speaker to the PCB.
If you experience direction problems in full scale testing this may be
due placement of microphone unit and obstacles reflections. A method
to clarify where the problem is located can be done with a close-up
microphone testing. Test set-up as the following:
● Set up a function generator to generate a square signal with a
frequency between 70-820 Hz. Place loudspeaker as close as
possible to the microphone unit pointing to microphone 1. Increase
level on loudspeaker until a detection occurs. See illustration. This
can be performed with smartphone and application.
● Create a test signal appearing for 3 seconds intervals throughout 360
degrees around the microphone unit. LED indication must be finished
before new direction is to be tested. Confirm VSS-MP displays
corresponding visual LED indication. If this is confirmed panel and
microphone operates correctly and malfunction has to be found in
placement and surroundings.