Manual
d.  Test the controller configuration as follows:
•  Check that the MLC is controlling the projector 
and PVS 405D switcher, and outputs the 
correct image when switching inputs.
•  Check the projector power control (turn it off 
and on at the MLC).
•  Adjust the configuration as necessary.
e.  Adjust the audio input sensitivity as follows:
•  Ensure there is an audio source at each 
transmitter.
•  On the PVS switcher, set the volume for each 
input by selecting an input and rotating the 
Volume encoder to a comfortable maximum 
level, where the input “normal” LED is lit, 
indicating the level is set properly. This ensures 
there is no clipping if the MLC volume is turned 
to maximum during operation.
•  Repeat step e for all inputs. 
f.  Where installed, to adjust the microphone 
sensitivity switch on the microphone, press and 
hold the volume down button until no beeps 
are heard from the speakers. Then press and 
hold the volume up button until six beeps are 
heard. To adjust the VoiceLift audio output level 
rotate the VoiceLift encoder on the switcher to 
the “normal” setting and the LED lights. Test 
and adjust the microphone so that the amplified 
voice is heard just above the normal voice level 
at each speaker location. See the VoiceLift User 
Guide, and page 66 of this guide for details. 
NOTES: 
•  The MLC volume control does not control 
the VoiceLift volume.
•  By default the switcher has been configured 
so that input level and VoiceLift input 
adjustments may not be required.
õ
 Test the MLC configuration is correct.
PVS 405D
POLEVAULT SWITCHER
AUDIO LEVEL ADJUST
PEAK
NORMAL
SIGNAL
INPUT
PEAK
NORMAL
SIGNAL
VOICELIFT
PAGING 
SENSOR
SENSITIVITY
PEAK
NORMAL
SIGNAL
Signal threshold
-20 dBV (-18 dBu
)
Level has been
properly adjusted
Level set too high,
lower input gain
®
 Adjust the audio levels on the PVS 405D.
PoleVault Digital Systems • Installation — Stage 5 (Configuration)64










