Code 3 MicroCom 2 Siren - Manual (Page 9)

9
Push-to-Talk (PTT) Microphone Switch - Keying
the microphone will automatically override whatever mode
the siren is in and broadcast public address messages
over the siren speaker.
MANUAL Push-button Momentary Switch -
Produces the Manual tone as described above.
AIR HORN Pushbutton Momentary Switch -
Produces the Air Horn tone as described above.
SLIDE SWITCH (Manual / AIR HORN) - The slide switch located on the front of the siren amplifier
(see Figure 3) selects the function for the REMOTE (external switch) circuitry. When the siren is in standby
mode and switch is to the right, the Horn Ring circuitry remotely "depresses" the AIR HORN button and it
produces the effects outlined above. When the slide switch is to the left, it allows the REMOTE circuitry to
remotely "depress" the MANUAL push-button with a similar result.
Operation - Scroll Mode Selected
The " Scroll " mode is designed to allow the user to scroll through Wail, Yelp, HyperYelp and AIR
HORN tones by utilizing the Remote input on the siren. This will usually be connected to the vehicle Horn
Ring circuit. The user can use the Horn Ring to sequence through Wail, Yelp and Hyperyelp by applying a
quick, sharp tap on the horn. Additional taps will scroll the siren to the next tone. The InterClear output will
also be activated for an eight second period following each tap of the Horn Ring switch. Depressing the horn
for longer periods will produce AIR HORN tone and deactivate the InterClear output.
When the Scroll Off option is purchased, the Remote input may be used to activate the siren from the
Standby mode. In this case the Scroll feature will operate as described above except that the siren will scroll
through WAIL, YELP, HYPERYELP & STANDBY modes. Holding the remote switch for a longer period will
still cause the siren to switch to the Air Horn tone. When the siren is not in Standby mode (the siren is
operating in any mode which was invoked by the either the Scroll Up or Scroll Down switches on the 3992
control panel), the scroll feature will operate as previously described.
Function Description
RRB - In the RRB position, the audio from the 2-way radio is rebroadcast over the siren speaker.
Note, all siren tone functions are disabled in this mode. Hhowever, the AIRHORN function will operate
normally.
STANDBY - This is the standby mode; no siren tones are produced in this position except when the
MANUAL button is depressed the Manual wail tone will ramp up until it reaches a peak then ramp down when
released. If the AIR HORN button is depressed, the Air Horn sound will be produced.
WARNING!
!
"Wail" and "Yelp" tones are in some cases (such as in the state of California)
the only recognized siren tones for calling for the right of way. Ancillary tones
such as "Air Horn", "Hi-Lo", "Hyperyelp", and "Hyperlo" in some cases do not
provide as high a sound pressure level. It is recommended that these tones be
used in a secondary mode to alert motorists to the presence of an emergency
vehicle.
Manual Air Horn
Figure 3, Siren Amplifier, Front Panel
PA Volume
Max PA Volume