Background Music Adjustment; Figure 25 Bgm Adjustment - Simplex 4100 Installation Manual
Emergency warning and intercommunication system (ewis)
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Page 70
6.4 BACKGROUND MUSIC ADJUSTMENT
Figure 25 BGM Adjustment
Document No.: 4100-M011
To
adjust
(BGM) output levels:-
(a)
Locate R2 variable resister on
the pre-amplifier board 002 –
064. (See Figure 25)
(b)
Use a screwdriver to adjust
variable resistor to required
output level.
R2
• Turn the variable resistor
Background
Music Adjust
• Turn the variable resistor
March 1998
SIMPLEX 4100 EWIS
INSTALLATION MANUAL
the
background
clockwise
to
volume.
anti-clockwise to decrease
volume.
Issue 1.0
Music
increase
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