Vornado SC-550-10 operating instructions Operation, General, Siren Controls, Ptt

Page 8 of 12 SC-550-10 28 Volt Installation and Operating Instructions

OPERATION

Sound Hazard - Sound level from siren speaker (>120dBA @ 10 feet) may cause hearing damage. Do not operate siren without adequate hearing protection for you and anyone in immediate vicinity. (Ref. OSHA 1910.95 for occupational noise exposure guidelines)

GENERAL

This unit is designed for easy operation under the stress associated with high-speed pursuit. Most functions are accessible with one simple motion without repetitive activation of switches or automatic timed switching that can interfere with desired operation.

SIREN CONTROLS

The combined power switch and volume control give power to the hand control and adjust the PA volume. Power is turned OFF by rotating the control counterclockwise until it “clicks”. Power is turned ON and increased PA volume by rotating clockwise. The power switch should be turned off when vehicle is not being used to con- serve battery power.

The Rotary Function Switch selects various siren operating modes. These modes are as follows:

PHaSeR: The siren produces a very fast warble tone. This mode may be used at intersections or in highly congested ar- eas. Horn and PA override available in this mode.

YELP: The siren produces a moderate warble tone. This mode may be used in lightly congested areas. Horn and PA override available in this mode.

Power Switch/PA Volume

Function Switch

WAIL: The siren produces a normal rise-fall tone pattern. This mode may be used on high- ways or areas with constant traffic flow. Yelp and PA override available in this mode.

MANual: The siren rise-fall tone is controlled manually with the Siren button. PA override avail- able in this mode.

HORN: Also considered a standby mode. Horn and PA override available in this mode.

RADio: This mode reproduces, or repeats, the output of a radio. The radio must be connected and the RADIO VOLUME adjusted. PA override available in this mode.

The following OVERRIDE FUNCTIONS are for certain modes.

PA: By pressing the microphone PTT (Push to Talk) switch on the side of the hand control, the siren will change to a PA (Public Address) amplifier. The siren mode resumes when the PTT is released. Adjust the PA Volume and hold the MIC close to your lips for proper operation. PA override is available in all modes.

PA and Siren Button

PTT

HORN: By momentarily pressing the Siren button or activating the auxiliary siren input, the HORN tone is produced. The siren mode resumes when released. Horn override is available in all modes except Radio and Wail.

YELP: Only available in Wail mode. By momentarily pressing the Siren button or activating the auxiliary siren input, the siren output is toggled between Wail and Yelp tone.

HRC2: Horn Ring Cycler 2 is only available in Horn (Standby) mode and must be enabled with the option switches. 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 returns to its previous siren tone or standby.. If automatic siren is ac- tive, then tones are not stopped. See OPTION SWITCHES section for further details.

CUTOUT: The cutout input turns off any siren tone when activated, and remains off until a siren control is changed.

05/07/05 CP4945A