Extron electronic PVS 305SA manual Testing and Adjustment Procedure, Sensitivity knob adjustment

5. Close and latch the top of the Priority Page Sensor. Reconnect the speaker cable to the speaker.

6. Strip 3/16 inches of insulation from each conductor on the

bare wire end of the remaining blue sensor cable. Do not tin the leads. Feed the wire into the junction box (clamping it down if necessary) and connect the wires to the 2-pole captive

screw connector on the PVS 305SA. Polarity need not be

observed.

7. If a junction box is being used in a plenum space, ensure the sensor and all wires fit inside the box (as shown at right). All cables leaving the box must be plenum rated. Tighten the cable clamp and secure the lid to the junction box.

NTo enable the switcher’s paging sensor port, use the MediaLink Switchers Configuration program (for MLS and PoleVault Switchers PVS), available at www.extron.com.

Testing and Adjustment Procedure

The fully installed system is shown below To test that the classroom audio is muted when a PA system announcement (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 program fails to mute the classroom audio during a page, turn the Sensitivity adjustment, on the front panel of the PVS 305SA, clockwise.

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

Admin Building	Classroom
To Classroom		Ceiling Mounted
Paging Speakers		Paging Speaker
	Priority		FF 120
	Page		Flat Field
	Sensor	Sensor	Speakers
		Output

Paging

Sensor

Input

PVS 305SA

PoleVault Switcher

Paging System

Typical paging system with the PVS 305SA switcher

LINE OUT

AMPLIFIED AUDIO OUT

O O

GROUND

OR SHORT

2/4/8

SPEAKER

Ohms

OUTPUTS

L

R

CLASS 2 WIRING

L

R

L

R

CONTROL

10V

50mA

Tx

Rx

IR

12V

AUX AUDIO

PAGING

RS-232 MLC/IR

INPUT 5

SENSOR VOL/

MUTE

PVS 305SA

Page

Sensor

6Connect the Priority Page Sensor to the Paging Sensor port on the switcher

7Ensure the sensor and wires fit completely inside the junction box before attaching the cover

PVS 305SA

						SWITCHER
				POLEVAUL
	AUDIO LEVEL ADJUST					PAGING
	PEAK		MIC		PEAK	SENSOR
NORMAL				NORMAL
SIGNAL	VOICELIFT		SIGNAL	SENSITIVITY

Adjusting sensitivity knob:

Clockwise to increase

Counterclockwise to decrease

3 and 4 Sensitivity knob adjustment

PoleVault Systems Installation • Optional Accessory Installation 3-3