Manual
Testing and Adjustment Procedure
To test that the classroom audio is muted when a 
PA system announcement (a page) occurs:
1.  Turn the classroom audio on.
2.  Speak into the PA system microphone. The 
classroom audio should be muted while the PA 
page occurs and be restored when the page 
ends.
3.  If the program fails to mute the classroom audio 
during a page, turn the Sensitivity adjustment, on 
the front panel of the PVS 405D, clockwise.
4.  If the classroom audio is muted without a page 
occurring, turn the Sensitivity adjustment 
counterclockwise.
c 
and 
d
 Sensitivity Adjustment Encoder
PVS 405D
POLEVAULT SWITCHER
AUDIO LEVEL ADJUST
PEAK
NORMAL
SIGNAL
VOICELIFT
PAGING 
SENSOR
SENSITIVITY
AUDI
O
 LEVEL AD
J
PEAK
N
O
RMAL
S
I
G
NAL
VO
I
C
ELIFT
J
PoleVault Digital Systems • Optional Accessories72










