Code 3 MicroCom 2 Siren User Manual
INSTALLATION
& OPERATION
MANUAL
3992 SERIES
SIRENS
IMPORTANT:
SIRENS
Contents:
Introduction ......................................................... 2
Standard Features .............................................. 2
Unpacking & Pre-Installation .............................. 4
Installation & Mounting ....................................... 4
Set-Up and Adjustment ...................................... 7
Operation ............................................................ 8
Maintenance ..................................................... 10
Troubleshooting ................................................ 12
Wiring Diagram ................................................. 14
Specifications.................................................... 15
Parts List ...................................................... 16-19
Warranty ........................................................... 20
Read all instructions and warnings before installing and using.
INSTALLER:
This manual must be delivered to the end user of this equipment.
Introduction
The 3992 series sirens are remotely controlled electronic sirens that has been designed to meet the needs of
all emergency vehicles. This series of sirens incorporates the popular features of the existing siren with
microprocessor based circuitry and MOSFET technology. All of the original
along with many added CODE 3 features such as; Park Kill, Instant "ON", Adj. " Scroll " Mode and more.
Sirens are an integral part of an effective audio/visual emergency warning system.
However, sirens are only short range secondary warning devices. The use of a siren
does not insure that all drivers can or will observe or react to an emergency warning
signal, particularly at long distances or when either vehicle is traveling at a high rate of
speed. Sirens should only be used in a combination with effective warning lights and
never relied upon as a sole warning signal. Never take the right of way for granted. It is
your responsibility to be sure you can proceed safely before entering an intersection,
driving against traffic, or responding at a high rate of speed.
!
WARNING!
SIREN
PRODUCTS:
ing and wiring. Read and follow the manufacturer’s instructions before installing or using
this device. The vehicle operator should check the equipment daily to insure that all
features of the device operate correctly.
hearing damage. Installers should be warned to wear hearing protection, clear bystanders from the area and not to operate the siren indoors during testing. Vehicle operators
and occupants should assess their exposure to siren noise and determine what steps,
such as consultation with professionals or use of hearing protection should be implemented to protect their hearing.
responsibility to understand and obey all laws regarding emergency warning devices. The
user should check all applicable city, state and federal laws and regulations.
warning device.
the emergency vehicle. It is important to recognize that the operator of the emergency
vehicle is under psychological and physiological stress caused by the emergency situation. The siren system should be installed in such a manner as to: A) Not reduce the
acoustical performance of the system, B) Limit as much as practical the noise level in the
passenger compartment of the vehicle, C) Place the controls within convenient reach of
the operator so that he can operate the system without losing eye contact with the roadway.
Properly protect and use caution around live electrical connections. Grounding or shorting
of electrical connections can cause high current arcing, which can cause personal injury
and/or severe vehicle damage, including fire.
PROPER USE OF EMERGENCY WARNING DEVICES IS ESSENTIAL TO INSURE THE
SAFETY OF EMERGENCY PERSONNEL AND THE PUBLIC.
The effectiveness of this warning device is highly dependent upon correct mount-
To be effective, sirens must produce high sound levels that potentially can inflict
This equipment is intended for use by authorized personnel only. It is the user’s
Code 3, Inc., assumes no liability for any loss resulting from the use of this
Proper installation is vital to the performance of the siren and the safe operation of
Emergency warning devices often require high electrical voltages and/or currents.
PROPER INSTALLATION COMBINED WITH OPERATOR TRAINING IN THE
features are available
Standard Features
The 3992 series sirens consist of a remotely mounted siren amplifier with an optional second amplifier,
providing up to 400W of siren power and opposing siren tones when both amplifiers are installed. The siren
system is operated by a compact control panel designed to be conveniently mounted near the operator. The
models are as follows:
3992 - Primary Tones: Wail, Yelp, Hi-Lo, Air Horn
- Secondary Tones: HyperYelp, HyperLo
3992XAMP - Primary Tones: Wail, Yelp, Hi-Lo, Air Horn
- Secondary Tones: HyperYelp, HyperLo
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2
It is important to note that the 3992XAMP is
compatible with the popular RLS series sirens and
may also be used as a 2nd amplifier with these
sirens.
The following features are standard in the 3992 series
sirens (tones and sequences may differ with model and
options):
Instant-On- There is no " ON/OFF " switch. Selecting
any
siren function, or keying the microphone will activate the
selected siren function, assuming the siren is properly installed and the vehicle's ignition is switched on.
Park Kill- This feature deactivates the siren tones when the vehicle is shifted into park. Once PKILL is activated
the siren will remain deactivated until the vehicle is shifted into drive and an
action occurs such as depressing one of the siren control switches or keying the microphone. Any of these
actions will cause the siren tones to start again.
Adjustable Backlighting- Backlighting is independent of siren power. Allows connecting to dimmer if desired.
Automatic Short Circuit Protection- The siren will sense a short circuit on the speaker terminals and
automatically go to standby until the fault is removed. Once the fault is removed the siren will return to normal
operation.
Scroll Mode- Setting the slide switch on the rear of the siren to the SCROLL position will put siren in scroll
mode. This will allow "scrolling" through tones utilizing sharp taps on the horn ring, or a switch, via the Remote
siren input. In this mode holding the horn ring for prolonged durations will produce the Air Horn sound. See
OPERATION section for further details.
Hit-n-Go Mode - Setting the slide switch on the rear of the siren to the Hit-N-Go position will put the siren in the
Hit-n-Go mode. This mode will be most familiar to existing users. A seven second override is
standard for all tones when activated by the Remote input. See OPERATION section for details.
Figure 1 - Control Panel
Automatic Siren Tones - Industry standard Wail, Yelp, and Hi-Lo tones.
AIR HORN Tone - Electronic AIR HORN sound.
Instant Public Address - Public Address override of all siren functions when the microphone Push-to-Talk key
is pressed.
Status LED - An indicator LED, visible on the front of the remote siren amplifier indicates that the unit is on
when lighted.
Radio Rebroadcast - Broadcast Two-way radio reception over siren speakers. These inputs are transformer
coupled to prevent loading of the radio.
Remote Siren Switching - The siren accepts either a positive or a ground (earth) signal, usually from the
vehicle's horn switch (or other user supplied switch), to remotely activate the MANUAL or AIR HORN functions.
(MANUAL or AIR HORN is selected via the slide switch located on the front panel of the siren amplifier. The
siren is factory set for a GND (Earth) signal and may be reconfigured to accept a positive signal. See
SETUP and Adjustments and Operation sections for details.
Noise Cancelling Microphone - Plug-in microphone that is easily unplugged for service or replacement.
3
Unpacking & Pre-installation
After unpacking your siren, carefully inspect the unit and associated parts for any damage that may
have been caused in transit. Report any damage to the carrier immediately.
Installation & Mounting
The 3992 series siren control may be mounted above the dash, below the dash, on a tunnel or in a rack with
the mounting hardware supplied (see Fig. 1). Ease of operation and convenience to the operator should be
the prime consideration when mounting the siren and controls
.
NOTE: Setups and
adjustments will be made in
subsequent steps. That may
require access to the rear area
of the unit. Plan the installation
and wiring accordingly.
!
WARNING!
Figure 1
All devices should be mounted in accordance with the manufacturer’s
instructions and securely fastened to vehicle elements of sufficient strength to
withstand the forces applied to the device. Ease of operation and convenience to the
operator should be the prime consideration when mounting the siren and controls.
Adjust the mounting angle to allow maximum operator visibility. Do not mount the
Control Head Module in a location that will obstruct the drivers view. Mount the
microphone clip in a convenient location to allow the operator easy access. Devices
should be mounted only in locations that conform to their SAE identification code as
described in SAE Standard J1849. For example, electronics designed for interior
mounting should not be placed underhood, etc.
Controls should be placed within convenient reach* of the driver or if intended
for two person operation the driver and/or passenger. In some vehicles, multiple
control switches and/or using methods such as “horn ring transfer” which utilizes the
vehicle horn switch to toggle between siren tones may be necessary for convenient
operation from two positions.
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Amplifier Connections
Terminal Connections
!
WARNING!
Siren Amplifier Connector - As a standard feature, the Siren is equipped with a combination plug-
in terminal block/connector. To terminate the wires, strip approximately 1/4" of insulation from the
end of each wire and insert it in the appropriate hole in the terminal block. Tighten the setscrew and
proceed to the next connection.
Should you ever have to remove the unit, pull the terminal block straight out. It will unplug from the
unit, leaving the wiring in place.
COM - Connect to the wire from speaker terminal 1.
SPKR - Speaker - Connect to the wire from speaker terminal 2.
Larger wires and tight connections will provide longer service life for components. For high
current wires it is highly recommended that terminal blocks or soldered connections be used with
shrink tubing to protect the connections. Do not use insulation displacement connectors(e.g. 3M® )
Scotchlock type connectors). Route wiring using grommets and sealant when passing through
compartment walls. Minimize the number of splices to reduce voltage drop. High ambient
temperatures (e.g. underhood) will significantly reduce the current carrying capacity of wires, fuses,
and circuit breakers. Use "SXL" type wire in engine compartment. All wiring should conform to the
minimum wire size and otherrecommendations of the manufacturer and be protected from moving
parts and hot surfaces. Looms, grommets, cable ties, and similar installation hardware should be
used to anchor and protect all wiring.
Fuses or circuit breakers should be located as close to the power takeoff points as possible
and properly sized to protect the wiring and devices. Particular attention should be paid to the
location and method of making electrical connections and splices to protect these points from
corrosion and loss of conductivity. Ground (Earth) terminations should only be made to substantial
chassis components, preferably directly to the vehicle battery.
The user should install a circuit breaker sized to approximately 125% of the maximum Amp capacity
in the supply line to protect against short circuits. For example, a 30 Amp circuit breaker should
carry a maximum of 24 Amps.
DO NOT USE 1/4" DIAMETER GLASS FUSES AS THEY ARE NOT SUITABLE FOR
CONTINUOUS DUTY IN SIZES ABOVE 15 AMPS. Circuit breakers are very sensitive to high
temperatures and will "false trip" when mounted in hot environments or operated close to their
capacity.
NOTE: When using two 100W (11 ohm) speakers in parallel, correct phasing is important and can
be accomplished by connecting both speaker terminals marked " 1 " to the COM terminal and both
speaker terminals marked " 2" to the SPKR terminal. Also refer to the wiring diagram on page 14.
REMOTE - Remote switch (Horn ring or foot switch). Circuit can be configured for both ground
(earth) or positive signals. A horn ring transfer circuit is standard in all 3990 series. Connect to the
"REMOTE" terminal on the Lighting Control Section terminal block. Unit is configured for a ground
(earth) at the factory. See page 8 for details on configuring for a +12V input.
5
!
WARNING!
BLTG- Provides +12V to siren backlighting. Connect to a vehicle circuit that is powered when the
ignition switch is " on ". If backlighting dimming is desired, connect to the dash lights' circuit.
Caution- If connected to the battery the backlighting will be active at all times.
CONNECTION OF A 58 WATT SPEAKER TO THE SPKR TERMINAL WILL CAUSE
THE SPEAKER TO BURN OUT, AND WILL VOID THE SPEAKER WARRANTY!
The sound projecting opening should be pointed forward, parallel to the ground, and not
obstructed or muffled by structural components of the vehicle. Concealed or underhood
mountings in some cases will result in a dramatic reduction in performance. To minimize this
reduction, mount the speaker so the sound emitted is projected directly forward and obstruction
by vehicle components such as hoses, brackets, grille, etc. is minimized.
Electromechanical sirens and electronic siren speakers should be mounted as far from
the occupants as possible using acoustically insulated compartments and isolation mountings to
minimize the transmission of sound into the vehicle. It may be helpful to mount the device on
the front bumper, engine cowl or fender; heavily insulate the passenger compartment; and
operate the siren only with the windows closed.
Each of these approaches may cause significant operational problems, including loss of siren
performance from road slush, increased likelihood of damage to the siren in minor collisions,
and the inability to hear the sirens on other emergency vehicles.
APPROPRIATE TRAINING OF VEHICLE OPERATORS IS RECOMMENDED TO
ALERT THEM TO THESE PROBLEMS AND MINIMIZE THE EFFECT OF THESE PROBLEMS
DURING OPERATIONS.
PKILL- This feature automatically deactivates siren tones when the vehicle is shifted into PARK.
Siren tones will be disabled until the vehicle is shifted out of PARK and one of the siren control
switches is selected. This circuit is activated by a negative signal. Connect this input to a circuit
that is GROUNDED (Earth) when the vehicle is shifted into PARK. It is the installer's
responsibility to determine an appropriate location in the vehicle circuitry to connect this
wire.
RRB - Connect to one side of the two-way radio speaker.
RRB - Connect to the second side of the two-way radio speaker.
InterClear® - Connect to the device or circuit that is to be activated by the InterClear feature. The
InterClear circuit is internally current limited at 1 Amp. Should your application require higher
currents, use the InterClear Power Booster Kit (# INTBS), available from your Code 3 supplier.
Power Connections
1/4" Male Quick-Connect Printed Circuit Board Terminals
+12V - Connect to a positive +12 volt DC source. It is recommended that the user protect this wire
with a 20 Amp fuse or circuit breaker located at the source. Use #14 gauge wire terminated with 1/
4" female, fully insulated quick-connect terminals only.
NEG - Connect to the negative terminal of the battery. This supplies ground (earth) to the siren. Use
#14 gauge wire terminated with 1/4" female, fully insulated quick-connect terminals only.
NOTE: A #8 stud is provided on the rear of the unit and is intended for use ONLY as a convenient
ground (earth) " tie-point " for the light bar wiring. It is not an adequate ground (earth) for the
siren or the light bar. It is recommended all ground (earth) wires attached here be
terminated with a crimp-on ring terminal.
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