Code 3 Scorpion Siren - Manual (Page 8)

8
The noise canceling microphone provided with your Code 3 ® siren is designed to reduce background noise
and help prevent acoustical feedback. For best results hold the microphone close to your lips and speak
directly into the microphone in a normal voice. Also refer to the Maximum P.A. Volume Adjustment
procedure under the SET-UP AND ADJUSTMENT section.
INTERCLEAR - The InterClear feature (model 3932 only) provides a timed output from the siren which can
be used to activate a special warning light or function. Each time the siren mode is changed by any of the
means previously described the InterClear output switches on (+12VDC, 1A Max) for approximately eight (8)
seconds. Turning the siren off will also turn the InterClear output off. Use Code 3 power booster kit (p/n
INTBS) for applications requiring more than 1A on the InterClear output.
Options
The following options may be specified for both the Model 3930 and Model 3932 sirens:
Pluggable Microphone - A plug-in microphone jack in lieu of the standard wired-in microphone may be
specified.
24VDC Operation - Allows the siren to be installed on vehicles with 24VDC, negative ground (earth)
electrical systems.
Radio Rebroadcast - Allows the Two-way radio receiver audio to be routed throught siren amplifier. These
inputs are transformer coupled to prevent loading of the radio. This feature is standard on Model 3932
sirens.
Specifications
Siren Section
Input Voltage - 10 to 16 VDC, negative ground (earth).
(Note: Operation above 15 VDC for an extended period of time may result in speaker damage.)
Optional - 22 to 28 VDC, negative ground (earth)
Operating Current: 8A @ 13.6V with 11-ohm load ( 100W Spkr )
4A @ 27.2V with 11-ohm load ( 100 W Spkr )
Note: There is no 58 Watt speaker connection available.
Standby Current: 12 mA excluding backlighting
Cycle Rate: WAIL - 11 cycles/minute.
YELP - 200 cycles/minute.
Voltage Output ( approx. ) 65 V peak-to-peak
Audio Section
Audio Response: 3 dB down points - 500 to 3000 hz.
1000 hz. 0 dB Reference
Audio Distortion: 10% or less below clipping.