Extron electronics Priority Page Controller PPC 25 Manuel utilisateur

PPC 25 Priority Page Sensor • Installation Instructions

68-1437-01

Rev F

04 08

PPC 25 Installation Instructions

POWER

C NO

PAGINGRELAYDELAY

SENSITIVITY

12V

0.2AMAX

L R

AUX/MIXIN

DONOTGROUND

ORSHORT

SPEAKEROUTPUTS!

RS-232MLC/IR

DC VOL

4/8Ohms

AMPLIFIEDOUTPUTS

VOL/MUTE

A B C

Rx IR 12V

10V

POWER

12V

3AMAX

LISTED

17TT

AUDIO/VIDEO

APPARATUS

RGBVIDEO R

VIDEO

Ceiling Mounted

Paging Speaker

Paging System

PPC 25

Priority

Page

Sensor

ClassroomAdmin Building

To Classroom

Paging Speakers

Relay Output

Remote

Vol/Mute

Control

Extron

PPC 25

Priority Page

Controller

Extron

PVS 204SA

Twisted Pair

Switcher

Extron

SI 26

Surface Mount

Speakers

PPC 25 Overview

The PPC 25 consists of the Priority Page

Controller and Priority Page Sensor.

Together they mute classroom audio for

the duration of an announcement that is

made over a Public Address (PA) system.

The Sensor connects to a PA speaker

lead and detects current ﬂow when a

PA announcement is initiated.

The Sensor signal triggers the PPC 25

controller’s output relay to close. This

relay closure can connect to a PoleVault™

switcher, a Mini Power Ampliﬁer (MPA),

a MediaLink™Controller (MLC), or any

device with a contact closure type of

mute control or a conﬁgurable digital

input.

The output relay remains closed until the PA

announcement ends. It then opens, dropping

the mute signal and restoring the classroom audio.

For a PoleVault System, the output relay should connect only to the PVS 204SA and not the MLC. This requires no

software conﬁguration.

If the Output Relay is connected to an MLC digital input, use Global Conﬁgurator software to conﬁgure the input

port, and set the monitoring conditions and actions to drive the desired mute function on the classroom audio device.

The PPC 25 Controller and Sensor are rated for use in plenum environments (any area utilized for air handling,

including areas above suspended ceilings and below raised ﬂoors). The PPC 25 Sensor assembly must be installed

in a UL-compliant junction box with a cover to meet the plenum rating requirement.

The PPC 25 works with traditional 25V or 70V and 4/8 ohm PA systems. It was not designed

for, and may not work properly with, systems using digital clocks and two-way intercoms.

Front and Rear Views of the PPC 25 Controller

aPower-on LED —green when power is on

bRELAY LED — amber when output relay is closed

cPOWER receptacle — 12 VDC, 33 mA. The unit does not ship

with a power supply. Power may be shared with another device.

Polarity must be observed.

dPAGING SENSOR connector — for the Priority Page Sensor that

is located near a PA system speaker

eRELAY OUT connector — connects to an ampliﬁer or switcher

that has a contact closure type of mute control input, or to an MLC

device with a digital input. When a PA system announcement is

initiated, the output relay closes and remains closed for the duration of the announcement. The closed output

relay triggers the classroom audio mute function. When integrating the PPC 25 into a PoleVault System,

connect the output relay to the PVS 204SA Mute and Ground pins only (see diagram on page 2).

fTIME switch — sets how long the output relay will remain closed after a PA announcement has ended. A

short time delay is necessary so that if the PA system announcer pauses briefly during the announcement, the

classroom audio is not restored prematurely. The 2-position DIP switch provides the following time settings:

gSENSITIVITY adjustment — sets the sensitivity level for the signal arriving from the Priority

Page Sensor. The final setting depends on the type of paging system and the number of wire

loops on the Sensor (see page 2). Rotate clockwise to increase sensitivity and counterclockwise

to decrease sensitivity.

PPC 25

RELAY

3 4 5 6

POWER

CNO

PAGING

SENSOR OUT TIME

RELAY

SENSITIVITY

12V

0.5A MAX

A Typical PPC 25 Installation

TIME

= 2.0 sec (default) = 4.0 sec=6.0 sec=8.0 sec

PPC 25 Priority Page Sensor • Installation Instructions

PPC 25 Installation Instructions, cont’d

Extron Electronics, USA

1230 South Lewis Street

Anaheim, CA 92805

800.633.9876 714.491.1500

FAX 714.491.1517

Extron Electronics, Europe

Beeldschermweg 6C

3821 AH Amersfoort, The Netherlands

+800.3987.6673 +31.33.453.4040

FAX +31.33.453.4050

Extron Electronics, Japan

Kyodo Building, 16 Ichibancho

Chiyoda-ku, Tokyo 102-0082

Japan

+81.3.3511.7655 FAX +81.3.3511.7656

Extron Electronics, Asia

135 Joo Seng Rd. #04-01

PM Industrial Bldg., Singapore 368363

+800.7339.8766 +65.6383.4400

FAX +65.6383.4664

www.extron.com

Installation Procedure

Follow all local ﬁre and safety code requirements for installation and anchoring. Install the PPC 25

Sensor in a UL-compliant junction box with a cover to meet plenum rating requirements.

1. Open the top of the Priority Page Sensor.

2. Loop either one of the speaker wire leads around the top (open) part of the Sensor, and connect it to the speaker

as shown above. Connect the other speaker wire directly to the speaker. Polarity need not be observed.

• Fora25V or 70V system — wrap 5 to 8 loops.

• Fora4/8 ohm system — wrap 2 to 4 loops.

3. Close and latch the top of the Priority Page Sensor.

4. Cut an 18" section from the unterminated end of the supplied

blue sensor cable for use in step 8 below.

5. Strip 3/16” of insulation from each conductor on the bare wire

end of the blue sensor cable. Do not tin the leads.

6. Connect the stripped leads to the 2-pole captive screw connector

on the Priority Page Sensor. Polarity need not be observed.

7. Route the connector end to the PPC 25 Controller, and plug it into the PAGING SENSOR receptacle.

8. Connect the 18” 2-conductor cable (from step 4) from the RELAY OUT port on the PPC 25 Controller to the mute

control input port on the audio amp or switcher to be muted during a PA system announcement. Polarity need

not be observed.

When integrating the PPC 25 into a PoleVault System:

1. Connect the 18” cable (from step 4 above) from the RELAY OUT

port on the PPC 25 Controller to the MUTE and GROUND pins

on the PoleVault PVS 204SA VOL/MUTE port. Polarity need not

be observed.

2. Use the included cable assembly (PN 27-576-01LF) to power the

PPC 25 from the PVS 204SA power supply. The PPC 25 must be

mounted near the PVS 204SA and its power supply.

Testing and Adjustment Procedure

To test that the classroom audio is muted when a

PA system announcment (page) occurs:

1. Turn the classroom audio on.

2. Speak into the PA system microphone. The classroom

audio should be muted while the PA system page occurs, and be restored when the page ends.

3. If the PPC 25 fails to mute the classroom audio during a page, turn the SENSITIVITY adjustment clockwise.

4. If classroom audio is muted without a page occurring, turn the SENSITIVITY adjustment counterclockwise.

Ceiling Mounted

Paging Speaker

Priority

Page

Sensor

From

PA system

To Priority

Page Controller

Blue

Sensor

Cable

POWER

C NO

PAGINGRELAYDELAY

SENSITIVITY

12V

0.2AMAX

L R

AUX/MIXIN

DONOTGROUND

ORSHORT

SPEAKEROUTPUTS!

RS-232MLC/IR

DCVOL

4/8 Ohms

AMPLIFIEDOUTPUTS

VOL/MUTE

ABC

RxIR 12V

10V

POWER

12V

3A MAX

LISTED

17TT

AUDIO/VIDEO

APPARATUS

RGBVIDEO RGB

VIDEO

To Power Supply

Extron

PPC 25

Priority Page

Controller

Extron

PVS 204SA

Tw isted Pair

Switcher

Extron

PVS 204SA

Rear Panel

RS-232 MLC/IR

DC VOL

4/8

Ohms

AMPLIFIED OUTPUTS

VOL/MUTE

ABC

Rx IR 12V

10V

Mute (center)

Ground (right)

Ce manuel convient aux modèles suivants

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