Videx VANDAL RESISTANT, VANDAL RESISTANTAUDIO AND VIDEODOOR ENTRY SYSTEM Technical Manual

TECHNICAL MANUAL
EDITION 1.1

VANDAL RESISTANT

AUDIO AND VIDEO

DOOR ENTRY SYSTEMS

PAGE 2 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

PAGE 3 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

CONTENTS

PAGE

Manual introduction

4

System introduction

4

System components

4 – 11

Vandal resistant panel layouts

5

Accessories

12

Installation

12 – 14

Cable size guide

13 – 14

Audio system block diagram

14

Video system block diagram

15

Testing the installation

15

Panel care

15

Accessories connection guide

16

Single entrance single button audio wiring diagram

17

Single entrance multiple button audio wiring diagram

18

Two entrance audio wiring diagram

19

Single entrance video system wiring diagram

20

Two entrance video system wiring diagram

21

Audio system trouble shooting guide

22

Video system trouble shooting guide

23

PAGE 4 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

MANUAL INTRODUCTION

The information in this manual is intended as an installation and commissioning guide for
the standard range of vandal resistant door panels, to be used with standard AC buzzer
telephones or with vandal resistant video panels using the Art.890 controller. This manual
should be read carefully before the installation commences. Any damage caused to the
equipment due to faulty installations where the information in this manual has not been
followed is not the responsibility of Videx Security Ltd.

VIDEX run free training courses for engineers who have not installed this system before.
Technical help is also available on 0191 224 3174 during office hours or via e-mail
[e-mail].

SYSTEM INTRODUCTION

This system can be used for single entrances or multiple entrances. The system has no
limit on the number of apartments for which it can control or the number of entrance points
that can be connected together, although we suggest using this system on small to
medium sized installation of no more than 20 apartments and three entrances.

SYSTEM COMPONENTS

A standard audio system will comprise of a door panel, power supply and audio
telephones. A standard video system will comprise of a door panel, video controller, power
supply, video splitters and videophones. The individual parts are described below.

DOOR PANELS

A vandal resistant door panel will consist of an amplifier module, button connector board
and ‘n’ number of buttons.

Speech volume adjustments are carried out at the door panel using a small trimmer driver.

Connection Function Connection Function

1 Receive speech from apartment LOCK Spare connector terminals
2 Transmit speech to apartment CB Common of call buttons
3 +12Vdc input A Spare connection terminal
4 0V (Ground) 1 Call button 1 connection

2 Call button 2 connection

3 Call button 3 connection

4 Call button 4 connection

Camera module (Art.830 & 830C)

5 Call button 5 connection

Connection Function

6 Call button 6 connection

I +20Vdc input 200mA (400mA - 830C) 7 Call button 7 connection

F1 0V 8 Call button 8 connection

V Centre core of coax video cable 9 Call button 9 connection

M Screen of coax video cable 10 Call button 10 connection

SB +8-12Vdc camera heater TRADE Trade button connections

Adjustment for

speech volume level

at the door station

Adjustment for

speech volume at the

apartment

Amplifier module (Art.437 or Art.537)

Connector PCB (CB)

PAGE 5 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

VANDAL RESISTANT PANEL LAYOUT AND SIZES

Standard audio panels

Other standard panel sizes:-

1 – 10 button with video [180mm (W) x 256mm (H) x 50mm (D)]
11 – 20 button + video [200mm (W) x 350mm (H) x 50mm (D)]

1 – 10 button + proximity [180mm (W) x 256mm (H) x 50mm (D)]
11 – 20 button + proximity [200mm (W) x 350mm (H) x 50mm (D)]

1 – 10 button + codelock [180mm (W) x 256mm (H) x 50mm (D)]
11 – 20 button + codelock [200mm (W) x 420mm (H) x 50mm (D)]

1 – 10 button + video & proximity [200mm (W) x 350mm (H) x 50mm (D)]
1 – 10 button + video & codelock [200mm (W) x 420mm (H) x 50mm (D)]

1 BUTTON = C
2 BUTTON = B, D (Note: Also available in 125mm 220mm panel style)
3 BUTTON = A, C, E
4 BUTTON = B, D, G, I
5 BUTTON = A, C, E, G, I
6 BUTTON = A, C, E, F, H, J
7 BUTTON = A, B, C, D, E, G, I
8 BUTTON = A, B, C, D, E, G, H, I
9 BUTTON = A, B, C, D, E, F, G, I, J
10 BUTTON = A, B, C, D, E, F, G, H, I, J
11 BUTTON = A, C, E, F, H, J, K, M, O, Q, S
12 BUTTON = A, C, E, F, H, J, K, M, O, P, R, T
13 BUTTON = A, C, E, F, H, J, K, M, O, P, Q, S, T
14 BUTTON = A, C, E, F, H, J, K, M, O, P, Q, R, S, T
15 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O
16 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, R
17 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, Q, S
18 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, R, T
19 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, S, T
20 BUTTON = A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T

PAGE 6 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

AUDIO SYSTEM POWER SUPPLY

Art.520M

The standard power supply is the Art.520M. Outputs of 12Vdc (200mA), 8Vdc (300mA)
and 13Vac (1A) are available. The dc outputs are designed to power the amplifier modules
only and can not be used to power other devices such as code locks, lock releases etc.
These items must be connected to the AC output of this power supply.

VIDEO SYSTEM POWER SUPPLY AND CONTROL UNIT

Art.890

The 890 control unit is used on video systems. Its functions include call tone generation,
voltage regulation and switching to both door panels and videophones, lock release control
and camera recall. The Art.890 requires both 13Vac and 24Vac to operate.

.

CONNECTIONS

CONNECTIONS

Terminal Function

+12 12Vdc output (200mA Max.)
+8 8Vdc output (300mA Max.)

- 0V (Ground)

~

13Vac (1A Max.)

230 Mains in (Live connection)
0 Mains in (Neutral connection)

Terminal Function

~ & ~ Power input 24Vac

~ & ~ Power input 13Vac

1 Switched 20Vdc to videophones (Only on during a call)
2 Switched negative from videophones to activate lock
3 Receive speech from videophone
4 Transmit speech to videophone
5 Ground for speech circuits
6 Ground for video circuits
TV1 Camera recall facility

T Electronic call tone output for call buttons
A 13Vac output for ac lock release
+8 8Vdc output 200mA max.
F Ground for door panel speech circuits
E Push button commons for AC calling
I Switched 20Vdc for camera (Only on during a call)
G2 Receive speech from door panel
H1 Transmit speech to door panel
F1 Negative supply for camera unit
F2 Switched negative (Switches off when lock released)
SE Switched negative to lock
+12V 12Vdc output 200mA max.

V & M Coax in from camera (V=Centre core, M=Screen)
V & M Coax out to videophones (V=centre core, M=Screen)

For more information
on the Art.890 please
see the Videx Video
technical manual

Fuse
compartment

PAGE 7 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

Art.850

The 850 transformer includes a 13Vac (1A max.) output and a 24Vac (1A max.) output.
Each of the two outputs is individually fused.

CONNECTIONS

Art. 893N

Art.701

20Vdc 800mA continuous 1A surge PSU and is used as a booster
supply or when more than two videophones are required in an
apartment. This power supply only has an output when either a 0V
is applied to –C or when a voltage is applied to +C. At all other
times the + output is switched off.

Connection Function

230V~ 0 Mains voltage input
+ Switched 20Vdc output (Triggered by –C or +C)

- 0V

-C 0V trigger input (From 4V to 0V)
+C + volts trigger input (From 8V up to 30V)
D+ Switched +20Vdc output via diode

BST/GMT digital time clock. This time clock operates from a 12Vac
or dc power supply. The output is a dry contact relay. When used
with this system the trade button input is used. This allows the dry
contact relay to drive the lock release directly. The relay can be
programmed to release the lock for 1 – 99 seconds.

Connection Function

+ 12Vac or dc voltage input

- 0V
TR Trade button input (Switched 0V)
C Common connection on relay
NO Normally open connection on relay
NC Normally closed connection on relay
For more information see time clock instruction sheet

Terminal Function

24V 24V ac output

13V 13V ac output

230V Live mains connection In
0 Neutral mains connection In

Fuse
compartment

PAGE 8 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

CONNECTIONS

Connection Function

- 0V connection from PSU

~ 13Vac supply input

A1 Current sensing path for call
A2 from door A
B1 Current sensing path for call
B2 from door B

1 Receive speech from telephone
2 Transmit speech to telephone
5 Lock trigger from telephone

1A Transmit speech to door A
1B Transmit speech to door B
2B Receive speech from door A
2B Receive speech from door B
5A Lock trigger to door A
5B Lock trigger to door B

LA LED command (Speech open to door A)
LB LED command (Speech open to door B)

R Reset signal (To other Art.502’s)

CONNECTIONS

Connection Function

1 13Vac supply input
2 0V connection
3 Current sensing path for call
4 from door A
5 Current sensing path for call
6 from door B
R Reset signal (To reset other Art.892’s)

7 Receive speech from videophone
8 Transmit speech to videophone

9 Lock release command from Art.890
10 Centre core of coax to apartments
11 Screen of coax to apartments
12 Switched 20Vdc from Art.890

7A Transmit speech to door A
7B Transmit speech to door B
8A Receive speech from door A
8B Receive speech from door B
9A Lock trigger to door A
9B Lock trigger to door B

10A Centre core of coax from door A camera
10B Centre core of coax from door B camera
11A Screen of coax from door A camera
11B Screen of coax from door B camera
12A 20Vdc to power camera at door A
12B 20Vdc to power camera at door B

Art.502
The Art.502 is a two door
switching relay for an audio
system. One unit is required for a
two door system, one unit per door
is required for a three or more door
system. The Art.502 switches both
audio and lock release request to
the door that calls. The relay stays
latches at the last door called.

Art.892

The Art.892 is a two door
switching relay for a video system.
One unit is required for a two door
system, one unit per door is
required for a three or more door
system. The Art.892 switches
audio, video and lock release
request to the door that calls. The
relay stays latches at the last door
called.

PAGE 9 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

AUDIO TELEPHONES

Art.3101

Art.3021

Art.3102

The Art.3101 AC buzzer phone includes a lock release push button
and spare dry contact push to make button for other services.

Smart line AC buzzer phone includes a lock release
push button.

CONNECTIONS:­ Function

1 Transmit speech to the door panel
2 Receive speech from the door panel
3 0V
4 Not used (Electronic call tone input)
5 Lock trigger (Switched 0V)
6 Call line (13Vac input to trigger buzzer)
8 Dry contact switch
9

The Art.3102 AC buzzer telephone includes a lock release push
button and spare dry contact push to make button for other services.
Additionally it includes a slide mute switch to turn the phone off when
the tenant does not want to be disturbed.

CONNECTIONS:­ Function

1 Transmit speech to the door panel
2 Receive speech from the door panel
3 0V
4 Not used
5 Lock Trigger (Switched 0V)
6 Call line (13Vac input to trigger buzzer)
8 Dry contact switch
9

5

PAGE 10 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

VIDEOPHONES

Art.3312

DIP SWITCH SETTINGS

The Art.3312 (3412 for colour) includes a lock release push
button, camera recall button and three dry contact push to
make spare push buttons for other services. Coax and non­caox video can be used by setting the relevant dip­switches. An Art.3980 back plate is required with this
videophone.

CONNECTIONS:-

Function

1 +12V out to power video splitter
2 Camera recall
3 Spare button
4 +20V power input
5 Door release command
6 Transmit speech to door panel
7 Receive speech from door panel
8 Speech Ground

9 Video power ground
10 Local call tone input
11 Coax centre core
12 Coax Screen
13 Speech common for intercommunicating systems
14 Call tone input
15 Speech ground for intercommunicating systems
16 Common of spare buttons
17 Spare button
18 Spare button

9 + Coax

Or

11 cores

PAGE 11 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

Art.3313

The Art.3313 (3413 for colour) includes a lock release push button and two dry contact push
to make spare push buttons for other services. An Art.3980 back plate is required with this
videophone.

CONNECTIONS:-

Function

1 +12V out to power video splitter
2 Not used
3 Spare button
4 +20V power input
5 Door release command
6 Transmit speech to door panel
7 Receive speech from door panel
8 0V (Ground)
9 Not used

10 Local call tone input
11 Coax centre core or non-coax sync­12 Coax Screen or non-coax Sync+
13 Switched +12 for door open LED
14 Select input to switch on videophone
15 Call tone input
16 Common of spare buttons
17 Spare button
18 +12V to power videophone privacy

DIP SWITCH SETTINGS
8 Way dip switch (Switches 1 – 5)

Mute Duration time

Time 1 2 3 4 5

15 Minutes ON OFF OFF OFF OFF
30 Minutes OFF ON OFF OFF OFF
2 Hours OFF OFF ON OFF OFF
4 Hours OFF OFF OFF ON OFF
8 Hours OFF OFF OFF OFF ON

3 Way Dip Switch
VIDEO MODE continued
Switch

1 2 3

Coax OFF OFF OFF
Non-Coax ON ON ON

8 Way dip switch (Switch 6)
Mute LED
Switch

6

Fixed OFF
Flashing ON

8 Way dip switch (Switches 7 & 8)
°° Button Operation
Switch

7 8

Camera recall ON OFF
Dry contact OFF ON

4 Way Dip Switch (Switches 1 & 2)
S Button Operation
Switch

1 2

Camera recall ON OFF
Dry contact OFF ON

4 Way Dip Switch (Switches 3 & 4)
VIDEO MODE
Switch

3 4

Coax ON ON
Non-Coax OFF OFF

PAGE 12 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

ACCESSORIES

Art. 512A, Art.512R

ES/1

INSTALLATION

The wiring diagrams towards the back of this manual should be followed carefully. Heavy
duty conductors on wiring diagrams are shown heavily outlined, These wires should be
doubled up.

- Check that all components are free from damage before installing (Do not proceed with
installation in the event of damage).

- Keep all packaging away from children.

- Do not obstruct the ventilation openings or slots on any of the devices.

- All connections to mains voltages must be made to the current national standards (IEE
Wiring regulations)

- Install an appropriate fused spur or isolation switch to isolate the mains.

- Isolate the mains before carrying out any maintenance work on the system.

- All intercom and access control cables must be routed separately from the mains.

Extension sounder for an apartment. This sounder can be wall
mounted and will ring whenever the telephone it is connected to
rings. The 512A is used on video systems and the 512R is used on

A

C buzzer audio systems

Timed strobe unit for the hard of hearing or noisy environments.
The strobe will flash when a call is received and will continue
flashing for an adjustable time period or until the reset button is
pressed.

512A Connections

4 Call tone input

- 0V (Ground)

Connections

POWER 12V AC or DC input
I/P + trigger
+O/P 12Vdc output
GND Ground
RESET Switched negative reset
NC Normally closed relay connection
CO Common relay connection
NO Normally open relay connection

The 512R has two non-polarity
connections requiring 13Vac to
buzz

PAGE 13 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

Lock release back EMF protection : A capacitor must be fitted across the terminals on
an AC lock release and a diode must be fitted across the terminals on a DC lock release
as shown in the diagrams below to suppress back EMF voltages.

LOCK RELEASE

12V AC

~~

0.1uF capacitor

+

-

1N4002

+

-

12V DC

LOCK RELEASE

DIODE

CABLE SIZE GUIDE

AUDIO SYSTEM

Connections from door panel to telephone.

Connections 50m 100m 200m 300m 400m

1

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

2

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

3

0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²

5

0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²

6

0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

When ever possible connection 1(Tx) should be twisted with connection 3(Gnd) and connection 2(Rx) should
be twisted with connection 3(Gnd) as pairs.
Maximum acceptable resistance for terminals 1,2 & 6 = 10Ω and for terminals 3 & 5 = 3Ω

Connections for power supply output to door panel and lock release connections.

50m 100m

Connections

0.5mm² 0.75mm²

The power supply should be located as close to the door panel as possible for best performance.
Maximum acceptable resistance for above cables = 3Ω

VIDEO SYSTEM

Connections from door panel to the Art.890 controller.

Connections 50m 100m 200m 300m 400m

T

0.35mm² 0.5mm² 0.5mm² 0.75mm² 1.0mm²

A

0.5mm² 1.0mm² 1.5mm² 2.0mm² 2.5mm²

+8

0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²

F

0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²

I

0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²

G2

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

H1

0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²

F1

0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²

F2

0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²

SE

0.5mm² 1.0mm² 1.5mm² 2.0mm² 2.5mm²

V

Standard quality Medium quality Good quality Good quality High quality

M

75Ω Coax cable 75Ω Coax cable 75Ω Coax cable 75Ω Coax

cable

75Ω Coax

cable

When ever possible connection H1(Tx) should be twisted with connection F(Gnd) and connection G2(Rx)
should be twisted with connection F(Gnd) as pairs.

PAGE 14 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

Maximum acceptable resistance for terminals T, G2, H1 = 10Ω and for terminals A, +8, F, F1 & I = 6Ω and
for terminals SE & F2 = 3Ω
V is the centre core of the coax and M is the screen.
The transformer should be mounted next to the Art.890 and connected using 1mm² cores

Connections from the Art.890 controller to the videophone.

Connections

Numbers in brackets are

those of the videophone

back plate. Without

brackets are signal

50m 100m 200m 300m 400m

+12(1)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

TV1(2)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

TV2(3)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

1(4)

0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²

2(5)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

3(6)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

4(7)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

5(8)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

6(9)

0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²

7(10)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

V(11)

Standard quality Medium quality Good quality Good quality High quality

M(12)

75Ω Coax cable 75Ω Coax cable 75Ω Coax cable 75Ω Coax

cable

75Ω Coax

cable

R(13)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

C(14)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

-(15)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

T(16)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

1T(17)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

2T(18)

0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²

When ever possible connection 3(6) should be twisted with connection 5(8) and connection 4(7) should be
twisted with connection 5(8) as pairs.
Maximum acceptable resistance for all terminals except 1(4) & 6(9) = 10Ω and terminals 1(4) & 6(9) = 6Ω
V is the centre core of the coax and M is the screen.

AUDIO SYSTEM BLOCK DIAGRAM

Note: Additional cores will be required for auxiliary devices such as push to exit buttons,
fireman switches, proximity access control etc.

PAGE 15 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

VIDEO SYSTEM BLOCK DIAGRAM

Note: Additional cores may be required for auxiliary items such as push to exit buttons,
fireman switch proximity access control etc..
The block diagram above shows all videophones coming back to one point with all the
video distributors at that point. It is also possible to spread the video distributors around
the building (Please see wiring diagrams for more information).

Safety Note : An earth connection should also be fitted to the door panel stainless steel
facia using one of the studs provided.

TESTING THE INSTALLATION

- Check all the connections have been made correctly and then power up the system.

- Call all the apartments in turn. Check for call tone to the apartment, speech in both
directions, video (optional) and lock release.

- If the volume of speech needs to be adjusted, this can be done by adjusting the presets
on the rear of the amplifier at the door panel.

- On calltone call system only, if the call tone volume needs adjusting this can be done at
each handset (Three position slid switch on the telephone).

- Set the time clock on/off times (Use the instructions supplied with the time clock).
Check the trade button only works when the time clock is on.

PANEL CARE

The door panels are manufactured from either 12 Gauge 304 grade stainless steel or
mirror finished brass. It is important that the facia is cleaned on regular occasions to
prevent dirt build up and tarnishing of the metal. A general household metal polish can be
used but care should be taken to follow the grain of the metal when polishing and also
avoid any polish build up around the call buttons which may prevent the buttons from
operating correctly.

PAGE 16 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

ACCESSORIES CONNECTION GUIDE

3101

3101

PAGE 17 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

WIRING DIAGRAM

This diagram shows a single
entrance vandal resistant door
panel connected to two audio
phones in the same apartment.
The lock release shown is fail
secure 12Vac.

PAGE 18 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

WIRING DIAGRAM

This diagram shows a single entrance
vandal resistant door panel connected to
multiple apartments. The lock release
shown is fail secure 12Vac. We suggest
running all telephones back to one point
(i.e. junction box next to power supply unit)

PAGE 19 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

WIRING DIAGRAM

This diagram shows a two entrance
multiple apartments system. 12Vac fail
secure lock releases.

PAGE 20 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

WIRING DIAGRAM

This diagram shows a single
entrance VR video door panel
connected to a single apartment with
two videophones.

PAGE 21 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

WIRING DIAGRAM

This diagram shows a two entrance
system. Two VR video door panels with
two call buttons connected to two
apartments.

PAGE 22 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

TROUBLE SHOOTING

When trouble shooting a large system, it will be easier to break the system down to a
manageable size. The simplest way to do this is to remove all but one handset. Doing this,
you can confirm the door panel and control cabinet are free from faults. Once this has
been confirmed you can reconnect the handsets in small sets (Floor by floor), testing after
each set to see if the fault has re-appeared.

AUDIO SYSTEMS
SYMPTOM TEST

No speech from the door panel to the
telephone.

Check terminal 2 on the amplifier for continuity to
terminal 2 on the telephone.

Before lifting the handset, check the voltage to
terminal 2 of the amplifier is 8-12Vdc. Trace this
voltage to terminal 2 to the telephone.
Check the voltage drops to approx. 1Vdc after the
handset is lifted. (If not try another telephone)
If all else fails try another amplifier at the door station

No speech from the telephone to the door
panel.

Check terminal 1 on the door panel amplifier for
continuity back to terminal 1 on the telephone.

Before lifting the handset, check the voltage to on
terminal 1 of the amplifier is 8-12Vdc. Trace this
voltage to terminal 1 to the telephone.
Check the voltage drops to approx. 4Vdc after the
handset is lifted. (If not try another telephone)
If all else fails try another amplifier at the door station

No speech in either direction

Check the 315mA fuse in the power supply
Check for 12Vdc across terminals 3 & 4 on the door

panel amplifier. This should be there all the time and
comes directly from the PSU.

Lock will not operate from telephone

Check terminal 5 on the telephone. This terminal
shorts to terminal 3 of the telephone when pressed
(Becomes 0V).

Nothing happens when any call button is
pressed

Check the common of the buttons has 13Vac
present at all times.

When a call button is pressed you should be able to
read 13Vac on terminals 3 & 6 of the telephone (6 of
the telephone comes direct from the call button). If
voltage is there then check/change the buzzer.

Hum on the speech lines

Ensure all intercom cables do not run close to higher
voltage cables
Try another amplifier at the door panel.

PAGE 23 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

TROUBLE SHOOTING

VIDEO SYSTEMS
SYMPTOM TEST

No call tone, Videophone works only by
pressing the camera recall button.

Check the 13Vac on the Art.850 PSU

Check the wire from terminal T on the Art.890 is not
broken or short.
Try changing the Art.890

Videophone rings but picture remains off.

Check 24Vac on Art.850
Check jumper JP4 on the videophone is in position B
Check wires 1 & 6 are ok from the Art890 to the

videophone and 20Vdc is present during a call.
Try changing the Art890

Videophone red LED on but no picture

Check coax cable is not broken or short
Check Art.894 is powering up with 12Vdc during a

call. Try taking the coax straight from the camera to
a videophone.
Check for 20Vdc across the camera terminals I & F1
during a call (powered from Art890)

Picture poor

Check all end of line resistors are fitted to unused
outputs on the Art.894 and a resistor is also fitted to
the end of line.
Check for any broken coax’s or screens.

Check wire F1 & 6 is not broken and is not to small.

No Camera recall

Wire TV1 broken
Try moving the wire from TV1 into T

Hum on the speech lines

Ensure all intercom cables do not run close to higher
voltage cables
Try another amplifier at the door panel.

No audio

Check terminals 3 & 4 for 12Vdc from the Art.890
Check terminal 5 from the Art.890 to the

videophones is not broken.

No speech from videophone to door panel

Check terminals G2 and 4 on the Art.890 for
continuity back to door panel and videophone.

PAGE 24 of 24 AUDIO/VIDEO VANDAL RESISTANT TECHNICAL MANUAL VER1.1

Northern Office

Videx Security Ltd
Unit 4-7 Chillingham Ind. Est.
Newcastle Upon Tyne
NE6 2XX
TEL [phone]
FAX [phone]

Southern Office

1 Osprey
Trinity Park
Trinity Way
London
E4 8TD
FAX [phone]

TECHNICAL SUPPORT

[e-mail]

TEL [phone]
FAX [phone]
http://www.videx-security.com