Federal Signal Corporation PA300 Series 690009 Installation And Operating Instructions Manual page 9

1. Connect the in-line fuseholder lead to
the positive (+) battery terminal.
2. Connect the black wire to the negative
terminal of the battery.
3-4. AIR HORN PRESS-AND-HOLD
MODIFICATION.
The unit comes from the factory set so that the
peak-and-hold sound will be heard when the Selector
switch is set to MANUAL and the vehicle horn ring is
activated. To change the sound to air horn, merely
move jumpers J8 and J9 from the "PEAK" position on
the P.C. board to the "AIR" position (see figure 3-5).
3-5. RELATIVE PA LOUDNESS ADJUSTMENT.
After the electronic siren is completely installed
in the vehicle, set the Selector switch to MANUAL.
Depress the microphone push-to-talk switch, speak in
a normal voice, and adjust the GAIN control for the
desired sound level outside the vehicle. Turn-on the
vehicle's two-way radio and adjust the volume to a
comfortable listening level inside the vehicle. Then
set the Selector switch to RADIO. Stand outside of
the vehicle and note the radio rebroadcast loudness.
If the sound volume is too loud or too soft, using a
small flat blade screwdriver, adjust R39 from the
back of the siren (see figure 3-6) to the desired sound
level.
After the adjustment is completed, the loudness
of the radio rebroadcast and public address may be
varied with the front panel GAIN control.
3-6. TESTING AFTER INSTALLATION.
All effective sirens and horns produce
loud sounds (120 dB) that may cause
permanent hearing loss. Always mini-
mize your exposure to siren sound and
wear hearing protection. Do not sound
the siren indoors or in enclosed areas
where you and others will be exposed to
the sound.
After installation; test the electronic siren,
including horn operation, to ensure that it is operat-
ing properly.
After testing is complete, provide a copy of this
manual to all operating personnel.
WARNING
IC7
R21 C29
Factory Configuration
IC7
R21 C29
Air Horn Configuration
Figure 3-5. Press and Hold Modification.
R39
Figure 3-6. Relative PA Loudness Adjustment.
-7-
D27
C20
R11
C8
IC3
R51
IC1
C49
C7
IC5
AIR
+
HORN
J9
R20 R15 R22
PEAK
IC6
AIR D25
R16
HORN
J8
PEAK
R23
C48
D21
R26 R31
D26
C9
IC10
D27
C20
R11
C8
IC3
R51
IC1
C49
C7
IC5
AIR
+
HORN
J9
R20 R15 R22
PEAK
IC6
AIR D25
R16
HORN
J8
PEAK
R23
C48
D21
R26 R31
D26
C9
IC10
AIR
HORN
J9
PEAK
AIR
HORN
J8
PEAK
C46
290A4507-06
AIR
HORN
J9
PEAK
AIR
HORN
J8
PEAK
C46
290A4507-07
290A4507-08