Valcom v-2924, V-2924A Service Manual

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VSP-V-2924

Issue 3

V-2924

TALKBACK INTERCOM SYSTEM

EXPANDABLE 24/48/72/96 ZONE

CONTENTS

INTRODUCTION	1, 2
SPECIFICATIONS	2, 3
INSTALLATION	3, 4
Precautionary Information	3, 4
V-2924 Control/Connector Locations	5
Punchdown Block Connections	6
Attendant Port Connection	7
Background Music Connection	7
Door Speaker/Call Switch Conn.	7
Inhibit Option	8
External Tone Source (ex.V-9927A)	8
SMDR Printer Port Cable	8
Override Page Port	9
Global All Call Page	9
Global Priority Page	9
Zone Page Option	10
Clock Sync	10
Dipswitch Options	11

OPERATION	12,13	V-2924 with V-2925 Expansion Unit
Remote Station Access (Call Button)	13
Attendant Station Dialing Plan	13,14
TROUBLESHOOTING CHART	14
LIMITED WARRANTY	14
TECHNICAL ASSISTANCE	15
GLOSSARY OF TERMS	16

The V-2924 Talkback Intercom System provides 24 stations with one-way, two-way, group call and all call pages. Each station can be programmed for one-way or two-way communication. The stations may be grouped into oneway page groups. The system also provides the ability for a remote speaker location equipped with a call button to call the attendant location. The attendant receives calling speaker identification when using a Caller ID equipped telephone or a Caller ID display.

The V-2924 is compatible with standard 45 ohm speakers and one-way amplified speakers and can be accessed via a single line phone, E-Key line port or PABX loop start trunk port. An RS-232 port on the control unit provides a connection for a serial printer for printout of system activity.

The V-2924 provides a background music input and is designed to automatically mute music during a page. The basic system also provides four (4) contact closures associated with the last 4 zones to allow for door strike plate activation. Multiple V-2924 control units can be interconnected to allow global all call and global priority pages for up to six (6) V-2924 control units.

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The V-2924 Control Unit provides access to 24 stations. A V-2925 Expansion Unit is available for the V-2924. Each V-2925 Expansion Unit will increase the capacity of the V-2924 by twenty-four (24) additional stations. Up to three (3) Expansion Units can be added to a system for a total of 48, 72, or 96 zones of paging.

A V-2926 Plug-in Option Board is also available to provide enhanced Caller ID, flexible architectural numbering, user defined page groups, a secondary serial port for easier programming and real-time clock. A Windows-based programming tool is used with the option board to simplify system programming. The tool can be used with PC compatible computers using the Microsoft Windows operating system.

“WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.”

“WARNING: Shock hazard – Do Not Open.” “AVIS: Risque de choc Electrique ne pas Ouvrir.” “PELIGRO: Corriente Electrica – No Abres.”

FEATURES

•24 zones of handsfree or one-way communication (expandable up to 96 zones)

•Built-in handsfree amplifier

•Background music input

•Built-in all call with “meet me” and “follow me” capability

•“Ring in” from speaker locations

•Calls placed in queue

•Dial tone programmable (On/Off)

•Alert tone

•Ringback tone

•Repeated alert/privacy tone programmable (On/Off)

•Auxiliary contact closures for zones 21, 22, 23, 24

•Programmable ring pattern

•Ring contact closure follows ring cycle

•Inhibit input

•Caller identification

•RS-232 serial printer port

•Control unit is internally powered (battery backup compatible; (1) VPB-260 per unit)

•Override port

•Emergency tone input

•Time tone input

•UNA contact closure input

•All call/priority page through up to six V-2924 systems of any size

•Group call

•Programmable class of service

CAPACITY

•The V-2924 is a single talkpath unit.

•The maximum number of speakers per zone: one 45 ohm speaker and/or forty (40) one-way amplified speakers.

NOMINAL SPECIFICATIONS

These units are not intended for direct or indirect connection to the public telephone network. When used with a customer premise telephone system such as a key system or PABX system, these units are interfaced to the system via a fully protective paging port or a system central port, which are fully protected interface devices. Additionally, the host system must be configured to disallow a central exchange trunk conferencing in order to prevent indirect connection to the network.

Attendant Port

•Loop Start Access (E-Key C. O. Line Position, Single Line Phone, Trunk Port of PABX)

•DTMF Access

•Caller ID Compatible

• Tip and Ring Input Impedance:	600 Ω
• Tip and Ring Input Level:	-10 dBm nominal
Ring Supply
90 VAC, 30 Hz - Ring Patterns:
2 sec ON, 4 sec OFF	American
1 sec ON, 4 sec OFF	Dutch
Double Ring	British

Override Page Port

•Loop Start Access (E-Key C. O. Line Position, Single Line Phone, Trunk Port of PABX)

•Telephone System Page Port Access

•Tip and Ring Input Impedance:600 Ω

•

Tip and Ring Input Level:

-10 dBM nominal

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Background Music Amplifiers

Input Impedance:	10 K Ω
Frequency Response:	50 Hz to 17 kHz +/- 3 dB
Distortion:	< 1.0 %
Signal to Noise:	-70 dB
Output Impedance:	45 Ω
Output Power:	1 watt per zone

Page Amplifiers

Frequency Response: 150 Hz to 7.5 kHz +/- 3 dB

Distortion:		< 1.0 %
Signal to Noise:		-70 dB
Output Impedance		45 Ω
Output Power		1 watt per zone
POWER REQUIREMENTS
Operating Voltage:		115, 230 VAC
Current:		1.0 Amp @ 115 VAC
		0.5 Amp @ 230 VAC
Frequency:		50, 60 Hz
ADDITIONAL INPUTS
Inhibit (Ground Activated)
Emergency Tone Input
Input impedance:		10 K Ω
Input Level:		-10 dBm
Time Tone Input
Input impedance:		10 K Ω
Input Level:		-10 dBm
PRINTER PORT
Type:		Serial
Baud Rate:		9600
8 Data Bits, No Parity, 1 Stop Bit
ENVIRONMENT
Temperature:	0 to 40 ° C
Humidity:	0-85% Non-precipitating

DIMENSIONS/WEIGHT

•17.50”H x 10.31”W x 3.06”D (44.45cm H x 26.19cm W x 7.77cm D)

•15 lbs. (6.8 kg)

MAIN UNIT CONTROLS

•Tone level for internally generated tones (one control handles time, emergency and UNA tones).

•Tone level for externally generated tones (one control handles time and emergency tones).

•Phone to speaker level

•Speaker to phone level

•Background music system-wide level control

•All Call level

•Priority Page level

AUXILIARY CONTACTS

•Contact Closures for are available on Zones 21, 22, 23, and 24 (strike plates) (Main Unit). Each contact operates when the respective zone number is dialed and the “*” key is pressed twice.

•Remote Signaling Closure (follows ring pattern) 250 mA max @ 24 VDC.

PAGE PRIORITY

It is possible for multiple inputs to request an audio connection to a speaker at the same time. When a conflict occurs, the highest priority audio will be connected. A lower priority input that is overridden will be re-connected if it is still active in the system when all higher priority inputs have ended. Priorities from highest to lowest:

Override phone

Emergency tone (continued…) Time tone

Inhibit Handsfree call

External All Call Page All Call Page

Group Call Page Night Ring Background Music

INSTALLATION

Precautionary Information

RIS K O F ELE CTRIC S HO CK

CAUTION: To reduce the ris k of elec tric shoc k,

Do not rem ove cover.

No user serviceable parts inside.

Refer servicing to qualified service personnel.

This sym bol indic ates that dangerous voltage constituting a ris k of electric shoc k is present within this unit.

This sym bol indic ates that there are im portant operating and m aintenance

instruc tions in the literature accom panying this unit.

FCC Notice

This equipment has been tested and found to comply with the limits for Class A digital devices, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to

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radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Mounting

The V-2924 was designed for wall mounting only. Using the enclosed paper template, mark the locations for the mounting screws on a plywood backboard (minimum ½” thick). Insert screws and tighten to within 1/8” of the surface. Hang the unit on the screws, slide the unit left to the narrow end of the slots and tighten screws firmly.

Connections

Mount (3) 66B type punchdown blocks on the backboard near the V-2924 control unit. Make connections to the punchdown blocks as specified in Figure 2 - Punchdown Block Connections. (System Inputs - Block 7, Speaker Outputs - Block P3, Switch Inputs - Block P6). Also refer to the following diagrams for connections of each application.

Setting Option Switches

After all connections have been made, set the option switches to fit the specific user requirements. Refer to Figure 1 for location and Table 1 for the default values of the various switches. Make changes as required.

NOTE: This unit provides an option for disabling Talkback Alert Tone and Repeating Privacy Tones. Check local privacy regulations prior to disabling these tones.

Power Connections

Use a cord set consisting of a minimum 18 AWG cord and grounding type attachment plug rated a minimum of 15A, 250V. The cord set should have the appropriate safety approvals for the country in which the equipment will be installed and marked HAR.

The V-2924 may be provided with one of the following:

•NEMA 5-15 cordset for North American use;

•CEE/7 cordset for Continental European use;

•BS1363 cordset for United Kingdom use

Connect cordset to unit via IEC 320 female connector located on one end of cordset to IEC 320 male applaince coupler located on V-2924.

•For 115 VAC use, verify fuse rating of 1 amp and voltage selector switch displays 115 V.

•For 230 VAC use, verify fuse rating of .5 amp and voltage selector switch display 230 V.

•After all required connections have been made, plug the cordset into appropriate AC wall outlet.

For United Kingdom use:

As the colors of the cores in the main lead may not correspond with the colored markings identifying the terminals in your plug, proceed as follows:

•The core which is colored green and yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol (inverted Christmas tree), or colored green and yellow.

•The core which is colored blue must be connected to the terminal which is marked with the letter N or colored black.

•The core which is colored brown must be connected to the terminal which is marked with the letter L or colored red.

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FIG URE 1 - 2924 CO NT RO L AND CO NNECT O R LO CAT IO NS

Side View

Top View

			P 7
			P 3
			S W 4
			R79
			R80
			R82
			R115
			R81
			P 8
			R16
P 10
P 10			R11
			R11
			S W 2
			S W 3
			S W 1
			P 6
V-2924
A C	115/230	Fus e	B attery B ac k up
P ower	S witc h		Connec tor

S witc hes :
S W 1	- B G M G roup S elec t Dip S witc h (S ee Table 1)
S W 2, S W 3	- O ption Dip S witc h (S ee Table 1)
S W 4	- B attery F eed S witc h (P riority P ort)
Connec tors :
P 3	- 45 ohm S peak ers (S ee F igure 2)
P 6	- Call-In S witc h Inputs (S ee Figure 2)
P 7	- S y s tem Connec tions (S ee F igure 2)
P 8	- E x pans ion Unit Connec tor
P 10	- RS 232 S erial P ort for S M D R (DB 9 Connec tor)

V olum e Controls :

R11	- Hands free S peak er to P hone Level
R16	- Hands free P hone to S peak er Level
R79	- B ac k ground M us ic Level
R80	- E x ternal Tone S ourc e Level
R81	- A ll Call A djus t V olum e/A ttendant Level
R82	- O verride P ort P age Level
R115	- Internal Tone S ourc e Level

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