Operating instructions

SA-441-10 Installation and Operating Instructions Page 11 of 16

03/31/10 CP4816D

MICROPHONE (PA Override)

The noise-canceling microphone is used for public address operation and overrides any

function when the push-to-talk button on the side of the microphone is pressed.

PA VOL

This control adjusts the PA volume. With the vehicle parked, set the PA

volume to the maximum level with no feedback (squeal).

AUXILIARY INPUT

During installation an auxiliary input may be connected to the horn ring or other switching

device. It provides the same operation as pressing the Siren push-button.

HORN RING CYCLER 2 (HRC2)

During installation, the auxiliary input must be connected and the HRC2 option selected. While

the siren is in standby, tap the horn ring to bring the unit out of standby into Wail tone.

Repeatedly tapping the horn ring will cycle through Wail, Yelp, and Phaser tones. Tapping the

horn ring twice quickly will stop the siren tones and return the unit to standby. Pressing and

holding the horn ring will produce Horn tone until released. Then the siren will return to its

previous siren tone or standby. See OPTION SWITCHES section for further details.

NOTE: Earlier units with S/N lower than 04190000 have a different version of HRC. In this

case the siren tones cycle through Standby, Wail, Yelp, and Phaser. The tone is stopped by

cycling to Standby.

RADIO VOLUME ADJUST

The radio repeat volume level is set using an adjustment on the side

of the amplifier. Set the Selector Switch to the Radio position and

turn on the power. With the radio volume itself set to a normal level,

set the siren radio volume adjust control to the desired level.

DUAL SWITCH

The Dual switch controls the signal to the two amplifiers. With the switch off,

the amplifiers produce a common signal to the speakers. With the switch on,

independent siren signals are produced by each amplifier as follows:

Rotary Switch Operating Mode Activate Siren push-button or Auxiliary Input

Spkr A Spkr B Spkr A and B

Radio Radio No Change

Two-Tone Two-Tone Dual Horn (Default) or HRC2

Manual Silent Dual Manual

Wail Wail Wail Toggle between Dual Wail and Dual Yelp

Yelp Yelp Yelp Dual Phaser (Dual Horn if Phaser disabled)

Wail-Yelp Wail Yelp Dual Phaser (Dual Horn if Phaser disabled)

DUAL

VOL

Radio Volume