Valcom Pagepac Plus V-5335621 User Manual

PagePac

®

by

Issue 1

AMBIENT LEVEL CONTROLLER

V-5335621

INTRODUCTION

The Ambient Level Controller (ALC) constantly monitors
room noise and adjusts the paging level to accommodate
for any changes in noise level. It has a built-in Sound
Pressure Level (SPL) meter.

SPECIFICATIONS

The ALC has two inputs, a loop start input (Telco) and a
balanced 600 Ohm line input. The Telco input shall have
priority over the line inpu t. The mi crophone c an be placed
up to 5000 feet from the ALC with shielded wire. The ALC
has five contact cl osure clock or remote control inputs. The ALC has four double throw rel ay outputs that
activate on the -6 dB and 0 dB levels.

The ALC adjusts page system level in 6 dB steps. The Telco input is loop start and has priority over the
line input. The line input has a dry contact closure which will provide an isolated dry contact closure at
the connections of the line output.

• Power consumption 60 Watts

• Frequency Response 250 Hz to 15 KHz +

• Signal to noise (dB ref.) Better than -60dB

• Maximum output level 0dB, -12dB with jumper installed

• Output relay activaltion poin ts 0dB and -6dB gain reduction

• Output relay contact rat ing 1 Amp

• Number of relay output contacts 4

• Input level controls (internal) 5

• Control requirements Dry contact closure

• Input types Line, Telco (loop start only)

• Output types Line (600 Ohm)

• Contact closure on output Yes

• Contact closure contro lled input Yes

• Front panel controls Attenuation manual or automatic

• Front panel indicators Power
Attenuation, automatic
Telephone input active

• Maximum MIC line length 5000 feet

2dB

1 947194

FEATURES

• Allows automatic, manual or remote control of paging system audio levels

• SPL meter with over 50 dB range built-in

• Microphone can be placed up to 5000 feet from unit

• Balanced 600 Ohm inputs and outputs

• Loop Start Telco input with priority over line input

• Clock contact closure or remote control input connections

• Relay outputs for emergency override or indicators

• Dry contact closure on line input activates isolated dry contact closure on line output

• Internal microproc essor senses ambient noise via a MIC input, and adjusts the paging level

accordingly

• Rack or wall mount, single rack space

• 24VAC UL listed power supply, Part 15 (FCC) approved

Dimensions/Weight

• 17”W x 1.75”H x 8.75”D (19”W with rack ears)

(43.18cm x 4.45cm x 22.23cm)

• 8 lbs. (3.63 kg)

Environmental/Humidity

• 32 to 104° F (0 to 40° C)

• 0 to 85% non-condensing

TECHNICAL ASSISTANCE

When calling, have a VOM and a telephone test set available and call from the job site.
Call [phone] and ask for PagePac Technical Support, or call [phone] for Val com 24-hour
Automated Support or visit our websites at http://www.pagepac.com and www.valcom.com.

Should repairs be necessary, attach a tag to the unit clearly stating company name, address, phone
number , contact person, and the nature of the problem. Send the unit to:

Valcom, Inc.

PagePac

5614 Hollins Road

Roanoke, VA 24019-5056

®

Repair Dept.

2947194

INSTALLATION

TELEPHONE

SYSTEM

PAGE PORT

CAUTION: Use only the
FM-14 Log Current Microphone.

standard micr ophone will be

A
damaged if connected to the FM-15.

V-5335621

CONTACT
CLOSURE

Power Input
24 V olts AC

elco In

T

Loop St ar t

AMPLIFIER

600 OHM
PAGE PORT

0dB

INPUT

OUTPUT
TO LINE
INPUT

Output

Line In

Shield

C1 G + -

Level

Line Out to Page Input

100-250 V AC, 50/60 Hz

Line Out

+ -

C1 C

R G B

0 dBm

FM-14

NOTE:

These termin als are redundant
MIC input conne cti ons. Useful

1/4 Modular
Cord or

Full

when a modular RJ-11 plug and
cable is not suitable.

Modular
Cord

Mic Only

Mic Only

NO 1CNC

NO 1CNC

Relay Outputs

NO 1CNC NO 1CNC

Y

NOTE:

These termin als are redundant

Clock Inpu ts or Remo te Co ntrol

-24dB

-24dB

-18dB

NO C

-12dB

NO C

NO C

1

1

NO C

1

-6dB

NO C

1

1

page input conn ections. Useful
when a modular RJ-11 plug and
cable is not suitable.

OR

T

CONTROLLE R

OU

UNIT

LOW

CUT -

70V OUT

+

PAGE

MUSIC IN

-

TIP

C1

RING

RIGHT

LEFT

B

GROUND

Y R G

UNBALANCE D OUTPUT

PAGE AC CES SED

INPUT LEVEL

DUCKING

PAG
INPUT

GND

TIP

C1

RING

DRY LOOP HI Z

LOOP START

DRY LOOP 600 OHMS

GROUND START

OVER LOAD

POWER

AMPLIFIER

100-250 V AC, 50/60 Hz

0 dBm

T

CONTROLLE R

OU

70V OUT

UNIT

LOW

+

CUT -

-

B

PAGE

C1

Y R G

MUSIC IN

RING

RIGHT

LEFT

GROUND

UNBALANCE D OU TP UT

PAGE ACCES SED

INPUT LEVEL

DUCKING

Set to Dry Loop 600 Ohm

Figure 1. Connection to Conventional Paging System

3947194

PAG

INPUT

GND

TIP

C1

DRY LOOP HI Z

LOOP START

DRY LOOP 600 OHMS

GROUND START

OVER LOAD

POWER