Videx SENTRY User manual

TECHNICAL MANUAL
EDITION 1.6
SENTRY
TECHNICAL MANUAL

PAGE 1 of 29 SENTRY TECHNICAL MANUAL VER1.6
CONTENTS
PAGE
Manual Introduction 2
System Introduction 2
System Components 2 – 12
System Operation 13
Vandal Resistant Panel layout and sizes 14
Installation 15
Block Diagrams 16
Cable Size tables 17
Testing the installation 18
Telephone Connections Compatibility Chart 19
Accessories Connection Guide 20
Standard wiring diagram 21
Isolated system wiring diagram 22
800 Series door panel wiring diagram 23
Video system wiring diagram 24 – 25
Apartment station system wiring diagram 26
Art136 amplifier wiring diagram 27
Trouble Shooting Guide 28 - 29

PAGE 2 of 29 SENTRY TECHNICAL MANUAL VER1.6
MANUAL INTRODUCTION
The information is this manual is intended as an installation and commissioning guide for
the Sentry system. 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 the sentry system
before. Technical help is also available on 0191 224 3174 during office hours or via e-mail
[email protected].
SYSTEM INTRODUCTION
The Sentry system is primarily a single entrance audio or audio/video system which is
capable of being expanded to multiple entrances with additional equipment. The system
has no limit on the number of apartments for which it can control although we suggest
using this system on small to medium sized installation of no more than 20 apartments.
The system benefits from advanced features such as full privacy of speech, fully privacy of
lock release, adjustable calling time, speech time and door open time and the facilities for
both push to exit button and tradesman button. There are many optional extras available
for the system including full line card isolation, door monitoring and access control (coded,
proximity, Bio). A range of options are also available for the apartments including a range
of telephones with varying facilities, videophones, extension sounders and strobes.
SYSTEM COMPONENTS
A standard audio system will comprise of a door panel, control cabinet and audio
telephones. A standard video system will comprise of a door panel, control cabinet, video
splitters and videophones. The individual parts are described below.
DOOR PANELS
Door panels from the 800 Series (Using the 837 amplifier), 4000 Series (Using the 4837 or
4832 amplifier) and vandal resistant (Using the 437 or 537 amplifier) range can be used on
the Sentry system.
Art.837 Amplifier connections
Connection Function
2 Transmit speech to apartment
~ 13Vac input for name plate lights
3 Switched +12Vdc input
1 Receive speech from apartment
4 0V (Ground)
~0V input for name plate lights
X Not Used
P2Push button 2 output
P1Push button 1 output
C Button common connection
Art.437 or 537 Amplifier + Connector PCB
Connection Function
1 Receive speech from apartment
2 Transmit speech to apartment
3 Switched +12Vdc input
4 0V (Ground)
CB Button common connection
1 Push button 1 output
2 Push button 2 output
…
10 Push button 10 output

PAGE 3 of 29 SENTRY TECHNICAL MANUAL VER1.6
ART.136 AMPLIFIER (Software version 136-12 or later)
Connection Function
1 Receive speech from apartment
2 Transmit speech to apartment
+ (3) +12Vdc input (Amplifier connection 3 on the Sentry PCB)
- (4) 0V (Ground) (Amplifier connection 4 on the Sentry PCB)
5 Link to terminal – when used on Sentry system
T Electronic call tone output to common side of call buttons (NOT USED ON SENTRY SYSTEM)
- Link to terminal 5 when used on Sentry system
PTE push to exit button to trigger door release relay (NOT USED ON SENTRY SYSTEM)
C Common connection of dry contact relay (NOT USED ON SENTRY SYSTEM)
NC Normally closed connection of dry contact relay (NOT USED ON SENTRY SYSTEM)
NO Normally open connection of dry contact relay (NOT USED ON SENTRY SYSTEM)
D+ External link to door open (+12V side) LED.
D- External link to door open (0V side) LED.
BSY Busy signal (NOT USED ON SENTRY SYSTEM)
SL Switched 0V output to switch on video PSU. (NOT USED ON SENTRY SYSTEM)
F1 Switched 0V output to switch on camera. (NOT USED ON SENTRY SYSTEM)
IMPORTANT NOTE (Art.136 Amplifier only): A 680R resistor needs to be fitted across terminals 1 & 3 of the
amplifier and a wire link across terminals 5 & - of the amplifier.
Speech volume adjustments are carried out at the door panel using a small trimmer driver.
Please see block diagram on page 16 for cable requirements
Art.4837 Amplifier connection
Connection Function
C Buttons common connection
C1 Calltone out (Not used on Sentry)
P1 Push button 1 output
P2 Push button 2 output
S1 Common relay (Not used on Sentry)
S Normally Open Relay (Not used)
RL 0V relay trigger (Not used on Sentry)
- 0V Ground
1 Receive speech from apartment
+ Switched +12Vdc input
2 Transmit speech to apartment
P3 Push button 3 output
P4 Push button 4 output
Art.4832 Amplifier connection
Connection Function
I Camera power input (14-20Vdc)
F1 Camera 0V
M/V2 Video Screen or Video sync+
V/V1 Video centre core or Video sync-
C Buttons common connection
C1 Calltone out (Not used on Sentry)
P1 Push button 1 output
S1 Common relay (Not used on Sentry
S Normally Open Relay (Not used)
RL 0V relay trigger (Not used on Sentry)
- 0V Ground
1 Receive speech from apartment
+ Switched +12Vdc input
2 Transmit speech to apartment
P3 Push button 3 output
Adjustment for
speech volume level
at the door station
Adjustment for
speech volume at the
apartment
1 2 3 4
ON H
L
Position H High volume reassurance tones
Position L Low Volume reassurance tones
No Jumper No reassurance tones
When using the Art.136
amplifier with the Sentry
system, all dip-switches
must be off
Dip-switches and
jumper setting
on Art.136
amplifier This jumper will not adjust the reassurance tone on
the Sentry system
680R

PAGE 4 of 29 SENTRY TECHNICAL MANUAL VER1.6
CONTROL CABINET
The control cabinet consists of three primary components plus optional extra components
such as line card isolation, door monitoring etc. The three primary components are the
Sentry control PCB, power supply unit and time clock.
SENTRY PCB
The Sentry PCB includes three jumpers to select calling time, speech time and door open
time:-
JP3 LINK FITTED LINK REMOVED
CALL TONE LENGTH L1 15 Seconds (3 rings) 25 Seconds (6 Rings)
SPEAK TIME L2 30 Seconds 90 Seconds
LOCK OPEN TIME L3 5 Seconds 10 Seconds
POWER SUPPLY
A control cabinet for an audio system will contain a 13.8Vdc PSU with battery back up
facility. The standard power supply is rated at 1 Amp. (Care should be taken to calculate
the current consumption of the lock release as it may be necessary to upgrade this power
supply to either a 2 Amp or even a 3 Amp). Video control cabinets will have an additional
PSU rated at 20Vdc 1 Amp surge or 800mA continuous. This additional power supply is
described below and is used to power the videophones and the camera.
CN1
CN2
CN3
CONNECTIONS
CON Terminal Function
CN1 +12 12Vdc Input power
GND 0V (Ground)
NO Normally open relay
CO Common relay
NC Normally closed relay
CB Call button common
4 0V to amplifier
3 Switched +12 to amp
1 Transmit speech to amp
2 Receive speech from amp
CN2 ENG-LO Engaged signal
ENG-LA Busy lamp connection
FIREMAN Fireman switch input
SWITCH Triggers relay for set time
TRADE Trade button input
BUTTON
TIME Time clock input
CLOCK
CN3 +12 +12V out to telephones
7 0V to telephones
4 Call tone output
2 Transmit speech to phone
1 Receive speech from phone
5 Lock release trigger
1
2
3
Call tone line protection fuse
Call in progress LED
JP3 Timer jumpers for call time,
speech time and relay time
1
2
3
3
1
5
m
A

PAGE 5 of 29 SENTRY TECHNICAL MANUAL VER1.6
Art. 893N
Art.701
OPTIONAL ISOLATION PCB
20Vdc 800mA continuous 1A surge PSU. 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+ +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 the Sentry control system the relay is used to short the time
clock inputs on the sentry PCB which will in turn enable the trade
button input to accept a short from a trade button. This will then
energise the lock relay on the Sentry PCB.
Connection Function
+ 12Vac or dc voltage input
- 0V
TR Not used with Sentry system
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
An isolation card will prevent a fault in a single
apartment affecting the rest of the system. The
isolation card has four channels (One card required
for every four apartments) and can be mounted in
the main control cabinet or in riser boxes.
Operation:
The isolation card will trigger an output when it
receives a positive voltage on either A, B, C or D.
The output will stay triggered as long as the SW+
terminal has 12 volts present. Once the 12V is
removed from the SW+ terminal the output will
switch back into isolated mode. The inputs A-D are
from the call buttons at the door panel and the SW+
is switched by the Sentry PCB (Terminal 3 of the
amp). Four LED’s on the PCB indicate when an
output is live.
2
1
33
5
5
5
5
4 4 4 4
Power and phone commons from Sentry
PCB
Select lines from call buttons
Call tone & +12V to phones fuse
Phone connections to apartment
Output live LED
1
2
3
4
5

PAGE 6 of 29 SENTRY TECHNICAL MANUAL VER1.6
INTERCOM 3 PCB
NOTE
In the event of the speech needing to be adjusted to eliminate feedback or to increase the
speech volume to an acceptable level the following two options are available :-
Option 1. The speech can be adjusted at the door panel amplifier by adjusting the two
volume controls (One for transmitting to the apartment and one for receiving from the
apartment).
Option 2. There is also a volume POT [VR1] on the intercom 3 PCB. This will adjust both
directions of speech at the same time and is only intended for situations when the volume
cannot be adjusted sufficiently at the door panel. (Note: This will also adjust the call tone
volume both at the door and at the apartment station).
1 2
3
CN1 Connections in from Sentry PCB
CN2 Connections out to apartment station
Volume adjust
1
2
3
The intercom 3 apartment station
interface PCB is required whenever
the 500, 500M or 500ST apartment
station are used. This PCB converts
the duplex speech into simplex
speech and controls the switching of
the apartment station
CON Terminal Function
CN1 +12V +12Vdc In
Gnd Ground
3 Switched 12Vdc
4 Calltone
2 Receive Speech
1 Transmit Speech
5 Lock Trigger
CN2 1 Lock button
6 Talk button
2 Switched 12Vdc
3 Speaker
5 Ground
+12V +12Vdc Out

PAGE 7 of 29 SENTRY TECHNICAL MANUAL VER1.6
AUDIO TELEPHONES
Art.3121
Art.3123
The Art.3121 includes a three position call tone volume control, lock
release push button and spare dry contact push to make button for
other services.
CONNECTIONS:-
Function
1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command
- 0V
C Select line (Switches on telephone)
8 Dry contact switch
9
The Art.3123 includes a three position call tone volume control, lock
release push button and spare dry contact push to make button for
other services. Additionally it includes a slide mute switch with LED 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
T Call tone in from Sentry PCB
P Switch 0V lock trigger command
- Not Used
C Select line (Switches on telephone)
8 Dry contact switch
9
SWITCH PCB
- 0V
+/~ +12V for mute LED

PAGE 8 of 29 SENTRY TECHNICAL MANUAL VER1.6
Art.3125
Art.3126
The Art.3125 includes a three position call tone volume control and
large lock release push button. Additionally it includes a push on push
off mute switch with status LED and a door open LED.
CONNECTIONS:-
Function
1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command
- 0V
C Select line (Switches on telephone)
D Switched +12 in for door open LED
+12 +12V for mute circuit
The Art.3126 includes a three position call tone volume control and
large lock release push button. Additionally it includes a push on push
off timed mute switch with status LED and a door open LED.
CONNECTIONS:-
Function
1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command
- 0V
C Select line (Switches on telephone)
D Switched +12 in for door open LED
+12 +12V for mute circuit
JUMPER SETTINGS:-
FIVE SETTINGS ARE AVAILABLE FOR THE PRIVACY TIME
Jumper in position A 15 Minutes
Jumper in position B 30 Minutes
Jumper in position C 2 Hours
Jumper in position D 4 Hours
Jumper in position E 8 Hours
SET THE PRIVACY LED TO FLASH OR ON CONSTANT
Jumper in position FL Flash the privacy LED
Jumper in position FX LED on constant

PAGE 9 of 29 SENTRY TECHNICAL MANUAL VER1.6
VIDEOPHONES
901D
Art.3313
The Art.901D (901D/C for colour) includes a lock release
push button and a dry contact push to make spare push
button for other services.
CONNECTIONS:-
Function
1 Transmit speech to the door panel
2 Receive speech from the door panel
T Call tone in from Sentry PCB
P Switch 0V lock trigger command
- 0V
C Select line (Switches on telephone)
V Centre core of coax
M Screen of coax
M 0V
+12 +12V out to power video splitter Art.894
+20 Switched +20V in to power videophone
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 sync-
12 Coax Screen or non-coax Sync+
13 Switched +12 for door open LED
14 Select input to switch on videophone
15 Call tone input from Sentry PCB
16 Common of spare buttons
17 Spare button
18 +12V to power videophone privacy

PAGE 10 of 29 SENTRY TECHNICAL MANUAL VER1.6
APARTMENT STATIONS
500
The model 500 apartment station includes a push to talk button, door release button and
slide mute switch. The Intercom 3 PCB must be used when using this apartment station.
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
Connections:
Function
4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground

PAGE 11 of 29 SENTRY TECHNICAL MANUAL VER1.6
500M
The model 500M apartment station includes a push to talk button, door release button and
push mute switch with LED and door open LED. The Intercom 3 PCB must be used when
using this apartment station.
500ST
The model 500ST apartment station includes a push to talk button, door release button
and timed push mute switch with LED and a door open LED. The Intercom 3 PCB must be
used when using this apartment station.
Connections:
Function
4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground
+ 12Vdc to power mute circuit
D Switch 0V to trigger door open LED
Connections:
Function
4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground
+ 12Vdc to power mute circuit
D Switch 0V to trigger door open LED
SW4
PRIVACY LED FIXED OR FLASHING
FIXED
SW4
FLASHING
SW4
PRIVACY LED FIXED OR FLASHING
FIXED
SW4
FLASHING
PRIVACY TIMES
TIME 15 MIN 2 HOUR 4 HOUR 8 HOUR
SETTING

PAGE 12 of 29 SENTRY TECHNICAL MANUAL VER1.6
ACCESSORIES
Art. 512A
ES/1
Extension sounder for an apartment. This sounder can be wall
mounted and will ring whenever the telephone it is connected to
rings.
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.
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

PAGE 13 of 29 SENTRY TECHNICAL MANUAL VER1.6
SYSTEM OPERATION
CALL: A call will be activated by a visitor pressing the desired flat number on the door
panel. A timed call tone will be heard at the occupants telephone (This will last for the time
set via jumper L1 or until the call is answered). A reassurance call tone will also be heard
at the door panel to indicate the system has been activated. If the occupant does not
answer the telephone, the call will clear down. If the occupant does answer the telephone,
the call tone will stop as soon as the handset is lifted. A two way conversation will then
take place (This will time out after the preset time set via jumper L2). If the occupant does
not want to let the caller into the building, the handset would be placed back on its cradle
and the call will clear down. If the occupier does want to let the caller into the building, the
lock button would be pressed and the door would open for the preset time. The lock button
will not work at any other time (A call must be placed to the handset and handset must be
answered before the lock button will work). Please note: This system has full privacy of
speech which means the speech lines will appear dead until a call is placed to that
apartment
TRADE: The trade button only works when the time clock is active (A short across the
time clock terminals on the Sentry PCB). At this time when the trade button is pressed the
door will open for the preset time (Set via jumper L3).
FIREMAN SWITCH/EXIT BUTTON: The fireman switch will work at all times. When this is
activated the door will open for the preset time (Set via jumper L3).
BUSY LIGHT: A busy light would be used when more than one sentry PCB is being used
to control multiple door systems. The busy light will illuminate when a call is activated at
any door panel. (To use several sentry PCB's together, simply connect the phone
commons from the PCB's together and also connect the engaged lines ENG-LO together).

PAGE 14 of 29 SENTRY TECHNICAL MANUAL VER1.6
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 15 of 29 SENTRY TECHNICAL MANUAL VER1.6
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.
Lock release protection : A diode must be fitted across the terminals on the lock release
to suppress back EMF voltages. The diagram below shows the polarity of the diode when
fitted to the release.
+
-1N4002 +
-
12V DC
LOCK RELEASE
DIODE
Cable size and type : When running cables for any intercom system, these cables must
be installed separately from the mains cables. All multi pair cables should be to CW1308
specification. (0.5mm twisted pair telephone cable). Max resistance = 10 Ohm.
Lock release wires should be doubled up. Max resistance = 3 Ohm
The cables sizes above can be used for distances up to 100m. On distances above 100m
the cable sizes should be increased to keep the overall resistance of the cable below the
RESISTANCES indicated above.

PAGE 16 of 29 SENTRY TECHNICAL MANUAL VER1.6
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.
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).

PAGE 17 of 29 SENTRY TECHNICAL MANUAL VER1.6
Connections from the door panel to the control cabinet.
(NOTE: Additional connections may be needed for fireman switches keypads, proximity etc)
Connections 50m 100m 200m 300m 400m
Amp 1 0.25mm²0.35mm² 0.5mm²
0.75mm²1.0mm²
Amp 2 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
Amp 3 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
Amp 4 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
CB 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
Selects 1-n 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
Trade 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
Trade 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
Lock 0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²
Lock 0.5mm² 0.75mm² 1.5mm² 2.0mm² 2.5mm²
V* Standard quality Medium quality Good quality Good quality High quality
M* 75ΩCoax cable 75ΩCoax cable 75ΩCoax cable 75ΩCoax cable 75ΩCoax cable
I (+20)* 0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²
F1 (Vid 0V)* 0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm²
SB (+12V)* 0.25mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
* These lines are only required on video systems.
V is the centre core of the coax and M is the screen.
For best performance, keep the distance between the door panel and the control cabinet to a minimum.
Connections from the control cabinet to the apartment.
Connections 50m 100m 200m 300m 400m
1 0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
2 0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
- 0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
4(T) 0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
5(P) 0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
6(C) 0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
D* 0.35mm² 0.35mm² 0.5mm² 0.75mm² 1.0mm²
+12* 0.35mm²0.35mm² 0.5mm²
0.75mm²1.0mm²
V(11)** Standard quality Medium quality Good quality Good quality High quality
M(12)** 75ΩCoax cable 75ΩCoax cable 75ΩCoax cable 75ΩCoax cable 75ΩCoax cable
+20** 0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²
Vid Gnd** 0.35mm² 0.5mm² 1.0mm² 1.5mm² 2.0mm²
+12OUT** 0.35mm² 0.5mm² N/A N/A N/A
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
* Only required on phones with privacy and/or door monitoring.
** Only required on videophones
V is the centre core of the coax and M is the screen.

PAGE 18 of 29 SENTRY TECHNICAL MANUAL VER1.6
Safety Note : The earth wire from the cabinet lid should be connected to the cabinet base
and then to the earth connection in the building. This should be checked for continuity.
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 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 as shown on page 3.
- If the call tone volume needs adjusting this can be done at each handset (Three
position slid switch on the telephone).
- Check the fireman switch (If fitted).
- Set the time clock on/off times (Use the instruction supplied with the time clock). Check
the trade button only works when the time clock is on.