Bell System bellview Installation & Operation Manual

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Bell System bellview Installation & Operation Manual | Manualzz

Bell System (Telephones) Ltd.

bell view

Video Entry System

1 Way

Installation & Operation

Manual

PD-010 Issue 2

TABLE OF CONTENTS

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Video Telephone (model BV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Entrance Panel (BVP series) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Privacy mode (buzzer mute) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Systems with extension telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Equipment supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Model 540 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Entrance Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electric Door Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Video Telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Video Telephone settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Picture Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Buzzer mute time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Call Active time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Disabling the VIEW button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Lock Release Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

540 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Speech Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Diagram 1 : Video Phone Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Model BV Video Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Model 61 Speech Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Model BV700 Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Model 540 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Cable and Wiring Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Cable requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Diagram 2a : Cabling for a 1 way single door system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Diagram 2b : Wiring for a 1 way single phone system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Diagram 2c : Wiring for systems with extension phones . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Bell View Video Entry System 1 Way

General Description

The bell

view Video Door Entry Telephone System is a high quality, versatile security product for controlling access to private houses, residential homes, blocks of flats and offices. The occupant is supplied with an individual video entry telephone, which enables them to view the person calling at the entrance; to converse with the caller; and if desired allow them access to the building via an electric lock release.

For a large flat or office, up to 3 extra video entry telephones (extension telephones) maybe used, enabling the occupant(s) to answer the caller from various locations, such as a kitchen or bedroom.

Video Telephone (model BV)

This is a slimline, wall-mounting unit, manufactured in high quality impact resistant ABS plastic. It has a 4" flat tube display with variable contrast and brightness, providing a high definition, high quality picture.

Entrance Panel (BVP series)

The BVP series aluminium panel is supplied with a flush-fitting back box. Stainless steel or brass Vandal Resistant panels are also available to order, engraved with the customers particular requirements. The panel includes a high quality two-way speech amplifier (model 61) concealed behind a grill, and a solid-state CCD camera (model

BV700) which is protected by a high impact strength lexan window. The camera includes four, high intensity infrared lamps for illumination of the caller at night time.

System Features

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4" Flat screen monitor

High resolution CCD Camera with infrared lamps

High quality, full-duplex speech amplifier

Privacy function (buzzer mute)

Full privacy of speech

Outputs for fail safe and fail secure locks

Lock release timer

Up to 3 extension telephones

1

Brightness

Contrast

Bell View Video Entry System 1 Way

Telephone Controls

Door Open LED

DOOR VIEW CAMERA PORTER PRIVATE

Mute LED

Unlocks the door

Monitor entrance

Camera Select

Buzzer mute

2

Bell View Video Entry System 1 Way

System Operation

General

The entrance panel, which includes the camera and speech unit, should be located on a wall adjacent to the building entrance. A visitor can contact the resident by pressing the call button on the entrance panel which will call the resident's video telephone

(sounding a buzzer), activating the display and enabling speech. The resident can view the caller on the video screen and by picking up the handset freely converse with the visitor. The telephone will remain active for a fixed period (adjustable 30-120 seconds).

If the resident wishes the caller to gain access to the building, the DOOR button can be pushed while the video telephone is still active; this will operate an electric lock release on the entrance door for a short period (adjustable, typically 5 seconds).

Privacy mode (buzzer mute)

To avoid disturbance from nuisance calls the resident may push the PRIVATE button on the video telephone. This will mute the buzzer for a fixed period (adjustable between

1 minute and 10 hours) and illuminate a red indicator lamp. Pushing the button again will reenable the buzzer and extinguish the lamp.

Monitor Mode

A resident may view the entrance at any time by pressing the telephone VIEW button

(This feature may be disabled if required).

Systems with extension telephones

When a visitor contacts a resident by pressing the call button, all telephones within the resident’s dwelling will buzz, but the display will not automatically illuminate. The occupant can then press the VIEW button on the nearest telephone to activate the display and enable speech as above.

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Bell View Video Entry System 1 Way

Installation

4

Bell View Video Entry System 1 Way

Important Safety Information

Connections to the 240V AC mains supply must be carried out by a qualified electrician or similar competent person, and made in accordance with accepted safety practices.

A two-pole switch (as provided by a Consumer Unit or Switch-Fuse) must be included to isolate both Live and Neutral during Installation or Maintenance. The circuit must be protected by a fuse or other current-limiting device, rated according to the capacity of the cable used, up to a maximum of 10A. Use only mains cable to BS6004 or equivalent, within the following specified limits:

Conductor Diameter

Cable Diameter

Min

1.0mm (0.8mm

2 )

4.0mm

Max

2.25mm (4mm 2 )

8.0mm

The M540 power supply is fitted with an internal mains fuse; always replace with the correct type and rating. The fuse must be of the 20mm glass type, approved to BS EN

60127 or equivalent:

T250mA 250V ( 250mA, 250V, Time delay)

Environment

All equipment except the entrance panel must be placed in a protected indoor environment.

Video Telephone

The display module of the video telephone has a high voltage circuit (2KV) which represents a shock hazard. When the top cover of the telephone is removed, precautions must be taken to avoid contact with this module.

5

Bell View Video Entry System 1 Way

Equipment supplied

BV1 Video System 1 Way Kit

1

1

1

1

1

1

BV Video Telephone

BVP1 1 Button aluminium panel

61 Speech unit (inside the panel)

BV700 Camera (inside the panel)

540 Power Supply

210 Surface Lock Release (fail-secure)

The model 206 lock release can be supplied instead of a 210, if fail-safe operation is required. Refer to page 7.

Model 540 Power Supply

Read the section called ‘Important Safety Information’ before installing the power supply.

The power supply must be wall-mounted onto plasterboard, wood or a similar nonconductive material, in a protected indoor environment such as an electrical cupboard.

When fitting the power supply cable (both mains and low voltage) ensure the cable entry cutouts in the enclosure lid are no larger than necessary for the cable diameter used and under no circumstances must they be taken beyond the outer cutout zones.

Entrance Panel

Careful consideration should be given to the location of the entrance panel to ensure the best possible lighting conditions for the camera. In general strong backlighting of the subject ( by the sun and sky) should be avoided as the contrast between foreground and background may be too great for the camera. The field of view should contain as little of the sky as possible, particularly if south facing. A wall or other buildings would be preferable. If a backlit situation is unavoidable, additional lighting may be necessary to illuminate the caller and avoid a dark outline image.

The panel should be mounted at an optimum height of 1.6 m, measured between the ground and camera window.

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Bell View Video Entry System 1 Way

Electric Door Release

The system is supplied with a Fail-Secure release (FAIL-SECR connections), which requires power to release the lock and will secure the door upon power failure. Fail-Safe

(FAIL-SAFE connections) lock releases and magnetic locks can also be connected, requiring continuous power to hold the lock and releasing the door upon power failure.

All of these types can be accommodated providing they are rated at 12V DC with a maximum current consumption of 0.5A. For lock releases that have different requirements contact your distributor for further guidance.

When installing lock releases please allow a little movement on the door as operation will be impaired if fitted too tight.

Video Telephones

(Refer to diagram 1)

Refer to the ‘Commissioning’ section for further information.

The model 500PX series telephone (depending on the features required) maybe used in place of one or more video telephones, if audio only is required.

Up to 3 extension video telephones maybe fitted. If more than 4 video telephones are required refer to your distributor or the manufacturer for further guidance.

7

Bell View Video Entry System 1 Way

Commissioning

Video Telephone settings

(refer to diagram 1)

IMPORTANT:

Single Telephone system

The video telephone must have the terminating slide switch set to 75R, to correctly terminate the 75S coax cable, refer to diagram 1.

The Auto-Display option must be set to on, refer to page 10.

Systems with Extension Telephones

The most distant telephone must have the terminating switch set to 75R, all others set to ‘HI’, refer to diagram 1.

The Auto-Display option must be set to off, refer to page 10.

Picture Adjustment

To adjust the BRIGHTNESS and CONTRAST of the picture adjust the two thumbwheel controls at the left hand side of the telephone.

Buzzer mute time

This is he time for which the telephone buzzer will be switched off when the buzzer mute button is pressed. Set between 1 minute and 10 hours (see SW2 settings, overleaf).

Call Active time

The telephone active time is the duration for which the telephone remains active

(display and speech) when called. Set between 30 and 120 seconds (see SW2 settings overleaf).

Auto - Display option

This option allows the display and speech to activate when the telephone is called; when deselected the telephone will buzz, but display and speech will not activate until the VIEW button is pressed, refer to page 10.

On systems with extension video telephones, to avoid an excessive power supply requirement, this option must be disabled.

8

Bell View Video Entry System 1 Way

Disabling the VIEW button

The VIEW button can be enabled/disabled by using the slide switch on the telephone

PCB (BV/2), refer to diagram 1.

CAMERA button

The camera button is only used on systems with more than 1 door.

Lock Release Adjustment

540 Power Supply

Adjust the preset VR1 to the required time, turning clockwise to increase the time.

Shorting ‘Z’ to ‘12V -’ will operate the internal lock relay, for the preset time (and an audible click heard).

Speech Adjustments

Make sure the Speech Unit is fitted tight against the front grill to avoid possible feedback effects. The speech volume may be adjusted by carefully applying a small screwdriver to the back of the Speech Unit; 'A' (speaker symbol) adjusts the speech level at the panel and 'B' (microphone symbol) adjusts the speech level at the telephone.

9

Bell View Video Entry System 1 Way

Video Telephone DIP switch settings

The location of the 8 way DIP switch is shown in diagram 1 and labelled ‘SW2'.

DIP Switch Position

Setting

1 2 3 4

Buzzer Mute Time

1 min off off off off

2 min

3 min off off off on off off on off

5 6

5 min

8 min

10 min

15 min

20 min off off off off on on on off off on off on off on on off off on on on

7 8

off - Switch down

on - Switch up

*

- default

setting

30 min

45 min

1HR

2HR

3HR

5HR

8HR

* 10HR on off off off on off off on on off on off on off on on on on off off on on off on on on on off on on on on

# - must be set

to this

position

Call / Active Time

30 sec

* 60 sec

90 sec

120 sec

5 6 off off off on on off on on

Auto-Display option

* Yes

7 on

No off

Video Privacy option

# No

8 off

10

Bell View Video Entry System 1 Way

Diagram 1 : Video Phone Adjustments

(top cover removed)

IMPORTANT

Refer to page 8

11

Bell View Video Entry System 1 Way

Troubleshooting

12

Bell View Video Entry System 1 Way

Fault Finding

Speech Problems

Low speech volume

Constant tone/feedback when in use.

Speech not audible when phone is live.

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No speech when the phone is buzzed

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Volume adjustment required on the Speech Unit, see page 9 under SPEECH ADJUSTMENTS.

Speech Unit is not tight against the panel grill.

Panel grill is blocked.

Speech Unit supply voltage low. Check 10V-15V across 'C' and 'H' on unit, after activating first.

Volume adjustment required on the Speech Unit, see page 9 under SPEECH ADJUSTMENTS.

‘O’ connection between Speech unit and telephone open circuit.

Speech Unit is not tight against the panel grill.

Entrance panel and telephone too close together.

The entrance panel is surrounded by reflecting walls.

Panel grill is blocked.

Low speech volume. To increase refer to page 9 under SPEECH ADJUSTMENTS.

No / low supply to Speech Unit. Check 10V-15V across 'C' (positive) and 'H' on the unit, after activating first.

Faulty 'R', 'O', or 'T' line.

Check ‘Auto - Display’ DIP switch setting is ON.

Refer to pages 8 and 10.

No / low supply to ‘+’ and ‘-’ video supply at the phone. Check 10V - 15V across connections.

Wiring fault on the speech signal connections ‘R’ or ‘T’. ‘R’ carries the phone microphone signal to the speech unit. ‘T’ the Speech unit microphone to the phone.

13

Bell View Video Entry System 1 Way

Video Problems

Video picture impaired or unsynchronised.

Entrance cannot be seen at night.

Picture does not appear when the phone is buzzed.

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1 or more phone terminating slide switches have not been set correctly. Refer to page 7.

Poor coaxial cable connection or screen not connected.

Phone too close to a magnetic field, e.g.

transformer.

Coaxial cable running too close to mains cable.

Coaxial cable is not of 75S type.

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Power not connected to Camera IR night illumination. Connect '1' to '+' on Camera.

If the screen lights up:-

Fault on Video coaxial cable. Check 'M' and 'S' connections.

No / low supply to Camera. Check 10V-15V across

Camera '+' and '-'.

Coaxial cable is not of 75S type.

If the screen does not light up:-

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Check ‘Auto - Display’ DIP switch setting is ON.

Refer to pages 8 and 10.

No / low supply to '+' and '-' video supply on phone. Check 10V-15V present.

14

Bell View Video Entry System 1 Way

Miscellaneous Problems

Telephone will not buzz.

Telephone ‘DOOR’ button does not operate release.

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Lock release operates all the time.

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Supply voltage low (less than 10V, any system component).

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Buzzer disabled by PRIVATE button. Check red telephone LED is off.

Faulty ‘V’,'O' or 'I' line between power supply and phone. Check 10V - 15V across ‘V’ and ‘O’, and

10V - 15V across ‘I’ and ‘O’ when called.

Faulty panel button.

Telephone is not live.

Fault on 'Z' or 'O' line. Check shorting 'Z' to 0V at the M540 power supply, when live, operates the release.

Lock release supply low. Check 10V-15V across the release with the lock button pressed and the phone live.

Faulty ‘DOOR’ button on telephone.

If the lock is a 'fail safe' type it has been connected to 'FAIL SECR'/'fail secure' output. If the lock is a

'fail secure' type it has been connected to 'FAIL

SAFE' /'fail safe' output. Check to see if the release is inactive when the lock button is pressed or try swapping the connections over.

‘DOOR’ button stuck down (lock operates only when live).

'Z' and 'O' lines permanently shorted together.

Short circuit. Disconnect power supply loads and check the output is 12V - 15V. Systematically disconnect components one at a time or isolate floors, etc. until the voltage is correct. Start with connections close to the Power Supply.

Cable voltage drop too high. Try doubling wires up with spare cores. Refer to the Cable and Wiring

Details sections.

15

Bell View Video Entry System 1 Way

Specifications

16

Bell View Video Entry System 1 Way

Model BV Video Telephone

Size

Fixing

Supply Voltage

Current consumption

Call / Active time

Buzzer mute time

180 mm x 245 mm x 75 mm

Wall mounted

10 V DC min.

15 V DC max.

405 mA maximum active

27 mA maximum idle

30, 60, 90 or 120 seconds

1 minute min

10 hours max

Model 61 Speech Unit

Size

Supply voltage

Current consumption

98 mm x 60 mm x 24 mm

6 V AC/DC min.

15 V AC/DC max.

100 mA DC max.

140 mA AC max.

Model BV700 Camera

Size

Image Device

Sensitivity

Current consumption

Minimum focus

Viewing angle

Supply Voltage

60 mm x 57 mm x 31 mm

1/3" CCD

0.1 lux.

175 mA max. without IR

215 mA max. with IR

100 mm

92

E (typical)

9 V DC minimum

15 V DC maximum

17

Bell View Video Entry System 1 Way

Model 540 Power Supply

Size 236mm x 105mm x 81mm

Output Voltage (regulated) 12.0 V DC min.

13.8 V DC nom.

15.0 V DC max.

Output Current

Lock outputs

Lock Time

1.5 A continuous

2.0 A peak (5 minutes max.)

12 V DC @ 0.5 A max. resistive or inductive

3 seconds min.

27 seconds max.

Mains Supply Internal fuse T250mA Anti-surge

Supply Voltage

Temperature Range

240 V 50 Hz nominal

0

EC to 50EC

18

Notes

Bell View Video Entry System 1 Way

19

Bell View Video System

Cable and Wiring Details

1 Way

Single Door System

CW1

Page 1 of 5

Bell View Video System

1 Way Single Door Systems

Cable Requirement

(Refer to diagrams 2a and 2b.)

Cable types (solid core)

0.5 mm

1.0 mm

Co-ax

Twisted pair, e.g. BT spec CW1308

1.0 mm 2 ‘Twin & Earth’

75 Ohm Low loss, e.g. CT100, RG6

Video phones

Total Cable Length Power (+,-)

50 m

100 m

Other connections

8 @ 0.5 mm [double +, -]

2 @ 1.0 mm 4 @ 0.5 mm

Video Signal

75 Ohm Co-ax

75 Ohm Co-ax e.g.

A Video phone with a 50 m length requires ; 8 conductors @ 0.5 mm.

Note

Where possible (for optimum speech clarity), a twisted-pair should be used for ‘R’ and ‘O’ connections to the video phone.

Entrance

Connections No. of Cores Max

Length

Camera + Speech unit + Call Button 5 + 75 Ohm Co-ax 50 m

Lock Release (up to 0.5 A) 2 25 m

100 m

Solid Core

Diameter

0.5 mm

0.5 mm

1.0 mm

Page 2 of 5

Bell View Video System

Diagram 2a : Cabling for a 1 way Single door system

Page 3 of 5

BV 1

Flat

Video

Phone(s)

6 - 8 (see the previous page)

Door Panel

*1

BV700

Camera

75R Co-ax

5

Call

Button

M61

Speech

Unit

M540

Power

Supply

Electrical

Cupboard

2

Lock

Release

© 1997 Bell System (Telephones) Ltd.

Bell View Video System

Diagram 2b : Wiring for a 1 way single phone system

Page 4 of 5

BV 1

Flat

Notes

*1 Connect '+' to '1' to activate

IR lamps.

*2 The Co-ax cable can be connected to either terminal block.

** Use a twisted-pair

(2 conductors).

O

T

Z

I

R

V

L

+

-

Video

Phone

M S

*2

S M

2

2

**

**

75R Co-ax

Door Panel

Call

Button

BV700

Camera

*1

1

-

+

M

S

+

M61

Speech

unit

C

H

R

O

T

Electrical

Cupboard

Z

+

-

12V

+

-

FAIL

SAFE

M540

Power

Supply

+

-

FAIL

SECR

206

Lock

Release

210

Lock

Release

Alternative Locks

© 1997 Bell System (Telephones) Ltd.

Bell View Video System

Diagram 2c : Wiring for systems with extension phones

Page 5 of 5

BV 1

Notes

*1 Connect '+' to '1' to activate

IR lamps.

*2 The Co-ax cable can be connected to either terminal block.

Max. of 4 telephones.

** Use a twisted-pair

(2 conductors).

Flat

Next Telephone

I

R

O

T

Z

V

L

+

-

Extension

Video

Phone

M S

*2

S M

75R

Set last telephone to 75R all others to

HI

Door Panel

Call

Button

BV700

Camera

*1

1

-

+

M

S

+

M61

Speech

unit

C

H

R

O

T

I

R

O

T

Z

V

L

+

-

Video

Phone

M S

*2

S M

2

**

2

**

Electrical

Cupboard

Z

+

-

+

-

12V

FAIL

SAFE

M540

Power

Supply

+

-

FAIL

SECR

75R Co-ax

HI

206

Lock

Release

210

Lock

Release

Alternative Locks

© 1997 Bell System (Telephones) Ltd.

c

This product complies with European directive 89/336/EEC on

Electromagnetic Compatibility and Low Voltage Directve 72/23/EEC.

Emissions:

Immunity:

Low Voltage :

Generic BSEN 50081-1

Generic BSEN 50082-1 (IEC801-2, IEC801-6)

Generic BSEN 60950

Bell System (Telephones) Ltd.

Milton Keynes

Made in the United Kingdom

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Related manuals

Frequently Answers and Questions

What are the main components of the Bell System bellview Video Entry System?
The system consists of a video telephone, an entrance panel with a camera and speech unit, and an optional electric door release.
What is the purpose of the video telephone?
The video telephone allows the resident to view the person calling at the entrance, converse with the caller, and grant access to the building.
How many extension telephones can be used with the system?
Up to 3 extension telephones can be used, allowing the occupant to answer calls from various locations within the dwelling.
What is the privacy mode on the video telephone?
The privacy mode, activated by pressing the PRIVATE button, mutes the buzzer for a set period and illuminates an indicator lamp, preventing disturbance from nuisance calls.
How can a resident view the entrance without receiving a call?
The resident can press the VIEW button on the video telephone to activate the display and view the entrance at any time.