Code 3 MasterCom B Series - Manual (Page 12)

12
Switch Operation - Scroll Mode Selected
The " Scroll " mode is designed to allow the user to scroll through all the tones including Airhorn by utilizing
the Remote input on the siren. This will usually be connected to the vehicle Horn Ring circuit. When the
siren selector switch is placed in either Wail or Yelp ( and Horn Ring transfer has occured ) the user can
use the Horn Ring to sequence through Wail,Hyperyelp and Yelp by applying a quick, sharp tap on the horn.
Additional taps will scroll the siren to the next tone. Depressing the horn ring for longer periods will produce
" Airhorn". After releasing the vehicle's horn ring, the siren will return to the selected tone.
Function Selector Switch (Center Knob)
RADIO - In the RADIO position, the audio from the 2-way radio is rebroadcast over the siren speaker. The
siren tones (Wail, Yelp, & Hi-Lo) do not operate in this position. In addition, power is routed to the two-way
radio via the RPWR pin on the rear panel connector. The EXPWR pin must be wired to the battery positive ,
and the two-way radio power connected to the RPWR pin.
STANDBY - This is the standby mode. If 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. The siren cannot be scrolled in this position.
WAIL - This position produces the Wail tone. Depressing the MANUAL button will now produce Manual wail
tone and ramp up until released. Depressing the AIR HORN button will produce the Air Horn sound.The siren
can be scrolled in this position as described above.
YELP - This position produces the Yelp tone. Pushing the MANUAL button will now produce the Manual wail
tone and ramp up until released. If the AIRHORN button is pushed, the Airhorn sound will be produced.The
siren can be scrolled from this position as decribed above.
HI-LO - This position produces the Hi-Lo tone.Pushing the MANUAL button will now produce the HyperLo
tone for 7 seconds. If the AIRHORN button is pushed, the Airhorn sound will be produced and when
released will return siren to Hi-Lo.The siren cannot be scrolled from this position.
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. PTT operates in all
positions of the Selector switch.
MANUAL Pushbutton Momentary Switch -Has no effect when the selector switch is in RADIO, produces
the effects described above for each selector position.
AIR HORN Pushbutton Momentary Switch - Produces the Air Horn tone in all selector switch settings
except RADIO.
SLIDE SWITCH - The slide switch located between the AIR HORN and MANUAL buttons selects the
function for the REMOTE (external switch) circuitry. When in the "Scroll " mode this switch has no
effect unless in STANDBY or the Hi-Lo position. When this is the case the switch functions as
follows:
When the 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 pushbutton. This causes the effects described above to occur.
LED STATUS INDICATOR - The green LED status indicator indicates the siren is on when lighted. The LED
will remain off unless a siren tone or air horn or PA or radio output is selected.