Motorola MCS 2000 Manuel d'installation - Page 9

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Operation: External Radio Operation

2.4

External Radio Operation

The External Radio feature amplifies and broadcasts incoming radio messages over the siren

speaker, allowing radio communications to be heard outside the vehicle.

2.4.1

Control Head/DEK-Plus

To enable the External Radio feature, turn the Siren function on by momentarily pressing the Siren

button on the DEK-Plus or the Sirn button on the control head. Then, select the External Radio

function by pressing the Ex Rd button. The corresponding LEDs will illuminate.

To adjust the External Radio volume, turn the volume control (rotary knob) on the control head.

To turn off the External Radio feature, press the Siren button on the DEK-Plus or the Sirn button on

the control head again, or select a different Siren function (Wail, Yelp, etc...). Once you turn off the

External Radio function, the radio's receive volume will correspond with the position of the rotary

knob on the control head.

2.5

Airhorn Operation

The Airhorn feature—available with the Control Head and DEK-Plus configurations—broadcasts an

airhorn tone over the Siren speaker. To broadcast the Airhorn, momentarily press the Ar Hn button.

To turn off the Airhorn, press the Ar Hn button again.

2.6

Manual Operation

The Manual function—available with the Control Head and DEK-Plus configurations—allows the

Horn-Ring to activate a siren tone.

To enable the siren tone to be generated via the Horn-Ring, press the Man and Siren buttons. The

corresponding LEDs will illuminate. Press the Horn-Ring to broadcast the pre-set tone (tones are

programmed in the CPS, the default tone is "Wail"). You can program the Horn-Ring to generate the

following tones:

• Manual Wail: Pressing the Horn-Ring activates a rising Wail that peaks at 1500 Hz and

continues as long as the Horn-Ring is held. When you release the Horn-Ring, the Wail tone

falls until the tone is muted.

• Manual Yelp: Pressing the Horn-Ring activates a Yelp tone that continues as long as the Horn-

Ring is held. When you release the Horn-Ring, the tone immediately mutes.

• Manual Airhorn: Pressing the Horn-Ring activates an airhorn sound that continues as long as

the Horn-Ring is held. When you release the Horn-Ring, the tone immediately mutes.

2.7

Speaker Protection Alert

When a short exists, the system performs a routine to "protect" itself from further harm. If a speaker

short occurs, any audio broadcast (Siren functions, PA audio) is terminated. The Control Head

displays SPKR SHORT. When the problem is corrected, the Siren/PA returns to its previous operation.

C a u t i o n

6881096C46-O

In order for this feature to operate correctly, use only the

following Motorola-approved speaker kits: TDN6251,

TDN6252, TDN6253, and TDN6254. The use of any other

speakers may cause unreliable operation of this feature and

prevent proper operation of the Siren/PA.

2-3

December 2, 2003