Code 3 MasterCom B Series - Manual (Page 11)

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P.A. VOLUME Knob - This control adjusts the level of the P.A. audio produced when keying the microphone
and speaking into it. This control also controls the Radio Re-broadcast level when in the " Radio " position (see
SET-UP, Radio Rebroadcast Adjustment on p. 8).
Operation
IMPORTANT !
The Mastercom Series has two distinct modes of operation. These are the Hit-N-Go mode and the
SCROLL mode. The desired mode of operation can be selected via the rear panel slide switch. Each
mode will effect the siren operation as described below. The Hit-N-Go mode should be most familiar
to existing Mastercom users.
The siren tones will be deactivated when the vehicle is in "PARK" if the PKILL feature has been
connected. To test the siren tones the vehicle must not be in "PARK". The following assumes that
PKILL has not been activated.
Switch Operation - Hit-N-Go Mode Selected
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 , and the vehicle is not in
PARK, 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.
WAIL - This position produces the Wail tone. Depressing the MANUAL button or activating the remote input
will now produce the Yelp tone for 7 seconds. Depressing the AIR HORN button will produce the Air Horn
sound and when released will return siren to Wail tone.
YELP - This position produces the Yelp tone. Pushing the MANUAL button or activating the remote input will
now produce the HyperYelp tone for 7 seconds. If the AIRHORN button is pushed, the Airhorn sound will be
produced and when released will return the siren to Yelp.
HI-LO - This position produces the Hi-Lo tone. Pushing the MANUAL button or activating the remote input
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.
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 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.