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SC-1002 / 1012 / 1022-10 14 Installation Instructions Page 13 of 16
CP4997B 2/20/08
OPERATION (continued)
SC-1022 Model
POWER ON/OFF
The unit is enabled (turned on) by applying positive voltage to the orange enable lead. The
POWER light on remote amplifier should come on. The hand control should also be backlit.
This is normally controlled with the ignition switch on the vehicle. See INSTALLATION section.
SIREN CONTROLS
MECH, WAIL, YELP, AND PHSR PUSHBUTTON SWITCHES
Four pushbutton switches control the primary operating mode of the siren.
The primary operating modes are:
Standby - A silent mode that may be overridden at any time.
Mech - A simulated mechanical siren tone. Tone may be changed or disabled. See
OPTION SWITCHES section.
Wail - A slower changing tone used on highways.
Yelp - A rapidly changing tone used in congested areas.
Phaser - A very rapid changing tone used at intersections and very highly congested
areas. May be optionally replaced with Two-Tone or disabled. Two-Tone is two
alternating frequencies like a European HI-LO. See OPTION SWITCHES section.
Momentarily press button to activate (lit red). Momentarily press button again to de-activate. Also
while a particular mode is activated, switch to a different mode by pressing one of the other three
buttons. The unit is in Standby when NONE of the four buttons are activated (NOT lit red). For
example starting with all four buttons off (Standby) press the Wail button to turn on Wail. Now
press the Yelp button to change to Yelp. Press the Yelp button again to turn off sound (Standby).
MAN PUSHBUTTON SWITCH
Provides manual control of siren tone depending on the primary operating mode selected.
While in Standby, the Manual button controls the Mechanical tone. Rising to peak while pressed
then falling until die out when released. While in Mech, Wail, Yelp, or Phaser mode, pressing the
Manual button causes tone to rise and peak then resume when released.
HORN PUSHBUTTON SWITCH
Produces a simulated Air-Horn tone while pressed. Overrides all siren modes. Horn tone may be
disabled. See OPTION SWITCHES section.
AUXILIARY INPUT FUNCTIONS
The switch or horn ring attached is intended to be momentary. While in Standby, activating auxil-
iary is same function as activating Manual button. While in Mech, Wail, Yelp, or Phaser mode,
activating auxiliary is same function as Horn button.
Horn Ring Cycler 2 (HRC2) - this feature may also be added. See description on Page 11.
LIGHT CONTROLS
LT1 and LT2 PUSHBUTTON SWITCHES
Momentarily push button to activate (will light red) corresponding light output.
Momentarily push button again to de-activate corresponding light output.
Primary Mode
and Tone
MAN
Button
HORN
Button
Auxiliary Input
(Horn Ring)
Standby (Silent) Man. Mech Horn Man. Mech. or HRC2
Mechanical Man. Mech. Rise Horn Horn
Yelp Manual Rise Horn Horn
Wail Manual Rise Horn Horn
Phaser Manual Rise Horn Horn
Sound Hazard - Sound level from siren speaker (>120dBA @ 10 feet) may cause hearing damage.
Do not operate siren without adequate hearing protection for you and anyone in immediate vicinity.
(Ref. OSHA 1910.95 for occupational noise exposure guidelines)
SC-1022
MAN
LT1
MECH
YELP
HORN
LT2
WAIL
PHSR