Bosch LTC 4600 Series User manual

LTC 4600 Series
Instruction Manual
EN Fiber Optic
Transmission System

LTC 4600 Series | Instruction Manual | Important Safeguards EN |2
Bosch Security Systems | September 20, 2004
Important Safeguards
1. Read, Follow, and Retain Instructions - All safety
and operating instructions should be read and
followed before operating the unit. Retain instructions
for future reference.
2. Heed Warnings - Adhere to all warnings on the unit
and in the operating instructions.
3. Attachments - Attachments not recommended by the
product manufacturer should not be used, as they
may cause hazards.
4. Installation Cautions - Do not place this unit on an
unstable stand, tripod, bracket, or mount. The unit
may fall, causing serious injury to a person and
serious damage to the unit. Use only manufacturer-
recommended accessories, or those sold with the
product. Mount the unit per the manufacturer's
instructions. Appliance and cart combination should
be moved with care. Quick stops, excessive force, or
uneven surfaces may cause the appliance and cart
combination to overturn.
5. Cleaning - Unplug the unit from the outlet before
cleaning. Follow any instructions provided with the
unit. Generally, using a damp cloth for cleaning is
sufficient. Do not use liquid cleaners or aerosol
cleaners.
6. Servicing - Do not attempt to service this unit
yourself. Opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all
servicing to qualified service personnel.
7. Damage Requiring Service - Unplug the unit from
the main AC power source and refer servicing to
qualified service personnel under the following
conditions:
•When the power supply cord or plug is damaged.
•If liquid has been spilled or an object has fallen
into the unit.
•If the unit has been exposed to water and/or
inclement weather (rain, snow, etc.).
•If the unit does not operate normally, when
following the operating instructions. Adjust only
those controls specified in the operating
instructions. Improper adjustment of other controls
may result in damage, and require extensive work
by a qualified technician to restore the unit to
normal operation.
•If the unit has been dropped or the cabinet
damaged.
•If the unit exhibits a distinct change in
performance, this indicates that service is needed.
8. Replacement Parts - When replacement parts are
required, the service technician should use
replacement parts specified by the manufacturer or
that have the same characteristics as the original part.
Unauthorized substitutions may result in fire,
electrical shock or other hazards.
9. Safety Check - Upon completion of servicing or
repairs to the unit, ask the service technician to
perform safety checks to ensure proper operating
condition.
10. Power Sources - Operate the unit only from the type
of power source indicated on the label. If unsure of
the type of power supply to use, contact your dealer
or local power company.
•For units intended to operate from battery power,
refer to the operating instructions.
•For units intended to operate with External Power
Supplies, use only the recommended approved
power supplies.
•For units intended to operate with a limited power
source, this power source must comply with
EN60950. Substitutions may damage the unit or
cause fire or shock.
•For units intended to operate at 24VAC, normal
input voltage is 24VAC. Voltage applied to the
unit's power input should not exceed 30VAC.
User-supplied wiring, from the 24VAC supply to
unit, must be in compliance with electrical codes
(Class 2 power levels). Do not ground the 24VAC
supply at the terminals or at the unit's power
supply terminals.
11. Coax Grounding - If an outside cable system is
connected to the unit, ensure that the cable system is
grounded. U.S.A. models only - Section 810 of the
National Electrical Code, ANSI/NFPA No.70,
provides information regarding proper grounding of
the mount and supporting structure, grounding of the
coax to a discharge unit, size of grounding
conductors, location of discharge unit, connection to
grounding electrodes, and requirements for the
grounding electrode.
12. Grounding or Polarization - This unit may be
equipped with a polarized alternating current line
plug (a plug with one blade wider than the other).
This safety feature allows the plug to fit into the
power outlet in only one way. If unable to insert the
plug fully into the outlet, try reversing the plug. If the
plug still fails to fit, contact an electrician to arrange
replacement of the obsolete outlet. Do not defeat the
safety purpose of the polarized plug.
Alternately, this unit may be equipped with a
3-wire grounding plug (a plug with a third pin, for
grounding). This safety feature allows the plug to fit
into a grounding power outlet only. If unable to insert
the plug into the outlet, contact an electrician to
arrange replacement of the obsolete outlet. Do not
defeat the safety purpose of the grounding plug.
13. Lightning - For added protection during a lightning
storm, or when this unit is left unattended and unused
for long periods of time, unplug the unit from the
wall outlet and disconnect the cable system. This will
prevent damage to the unit due to lightning and
power line surges.

LTC 4600 Series | Instruction Manual | Safety Precautions EN |3
Bosch Security Systems | September 20, 2004
For Indoor Product
1. Water and Moisture - Do not use this unit near
water - for example, in a wet basement, in an
unprotected outdoor installation, or in any area
classified as a wet location.
2. Object and Liquid Entry - Never push objects of
any kind into this unit through openings, as they
may touch dangerous voltage points or short out
parts that could result in a fire or electrical shock.
Never spill liquid of any kind on the unit.
3. Power Cord and Power Cord Protection - For
units intended to operate with 230VAC, 50Hz,
the input and output power cord must comply
with the latest versions of IEC Publication 227 or
IEC Publication 245.
Power supply cords should be routed so they are
not likely to be walked on or pinched. Pay
particular attention to location of cords and plugs,
convenience receptacles, and the point of exit
from the appliance.
4. Overloading - Do not overload outlets and
extension cords; this can result in a risk of fire or
electrical shock.
For Outdoor Product
Power Lines - An outdoor system should not be
located in the vicinity of overhead power lines,
electric lights, or power circuits, or where it may
contact such power lines or circuits. When
installing an outdoor system, extreme care should
be taken to keep from touching power lines or
circuits, as this contact might be fatal. U.S.A.
models only - refer to the National Electrical
Code Article 820 regarding installation of CATV
systems.
For Rack-mount Product
1. Ventilation - This unit should not be placed in a
built-in installation or rack, unless proper
ventilation is provided, or the manufacturer’s
instructions have been adhered to. The
equipment must not exceed its maximum
operating temperature requirements.
2. Mechanical Loading - Mounting of the
equipment in a rack shall be such that a
hazardous condition is not achieved due to
uneven mechanical loading.
Safety Precautions
Attention: Installation should be performed by
qualified service personnel only in accordance
with the National Electrical Code or applicable
local codes.
Power Disconnect. Units with or without ON-
OFF switches have power supplied to the unit
whenever the power cord is inserted into the
power source; however, the unit is operational
only when the ON-OFF switch is in the ON
position. The power cord is the main power
disconnect for all units.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE COVER
(OR BACK). NO USER SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
This symbol indicates the presence of
uninsulated “dangerous voltage” within the
product’s enclosure. This may constitute a
risk of electric shock.
The user should consult the operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.

LTC 4600 Series | Instruction Manual | FCC & ICES Information EN |4
Bosch Security Systems | September 20, 2004
Sécurité
Attention : l'installation doit exclusivement être réalisée par du
personnel qualifié, conformément au code national d'électricité
américain (NEC) ou au code d'électricité local en vigueur.
Coupure de l'alimentation. Qu'ils soient pourvus ou non d'un
commutateur ON/OFF, tous les appareils reçoivent de l'énergie une
fois le cordon branché sur la source d'alimentation. Toutefois,
l'appareil ne fonctionne réellement que lorsque
le commutateur est réglé sur ON. Le débranchement du cordon
d'alimentation permet de couper l'alimentation des appareils.
ATTENTION : POUR ÉVITER TOUT RISQUE D'ÉLECTROCUTION,
N'ESSAYEZ PAS DE RETIRER LE CAPOT (OU LE PANNEAU
ARRIÈRE). CET APPAREIL NE CONTIENT AUCUN COMPOSANT
SUSCEPTIBLE D'ÊTRE RÉPARÉ PAR L'UTILISATEUR. CONFIEZ
LA RÉPARATION DE L'APPAREIL À DU PERSONNEL QUALIFIÉ.
Ce symbole signale que le produit renferme une « tension
potentiellement dangereuse » non isolée susceptible de
provoquer une électrocution.
Ce symbole invite l'utilisateur à consulter les instructions
d'utilisation et d'entretien (dépannage) reprises dans la
documentation qui accompagne l'appareil.
Sicherheitshinweise
Achtung! Die Installation sollte nur von qualifiziertem
Kundendienstpersonal gemäß jeweils zutreffender
Elektrovorschriften ausgeführt werden.
Unterbrechung des Netzanschlusses. Geräte mit oder ohne
Netzschalter haben Spannung am Gerät anliegen, sobald der
Netzstecker in die Steckdose gesteckt wird. Das Gerät ist jedoch
nur betriebsbereit, wenn der Netzschalter (EIN/AUS) auf EIN
steht. Wenn das Netzkabel aus der Steckdose gezogen wird, ist
die Spannungszuführung zum Gerät vollkommen unterbrochen.
VORSICHT: UM EINEN ELEKTRISCHEN SCHLAG ZU
VERMEIDEN, IST DIE ABDECKUNG (ODER RÜCKSEITE) NICHT
ZU ENTFERNEN. ES BEFINDEN SICH KEINE TEILE IN DIESEM
BEREICH, DIE VOM BENUTZER GEWARTET WERDEN
KÖNNEN. LASSEN SIE WARTUNGSARBEITEN NUR VON
QUALIFIZIERTEM WARTUNGSPERSONAL AUSFÜHREN.
Das Symbol macht auf nicht isolierte „gefährliche Spannung"
im Gehäuse aufmerksam. Dies kann zu einem elektrischen
Schlag führen.
Der Benutzer sollte sich ausführlich über Anweisungen für
die Bedienung und Instandhaltung (Wartung) in den
begleitenden Unterlagen informieren.
Precauciones de Seguridad
Atención: la instalación la debe realizar únicamente personal
cualificado de conformidad con el National Electric Code o las
normas aplicables en su país.
Desconexión de la alimentación. Las unidades con o sin
interruptores de encendido/apagado reciben alimentación
eléctrica siempre que el cable de alimentación esté conectado a
la fuente de alimentación. Sin embargo, la unidad sólo funciona
cuando el interruptor está en la posición de encendido. El cable
de alimentación es la principal fuente de desconexión de todas
las unidades.
PRECAUCIÓN: PARA DISMINUIR EL RIESGO DE DESCARGA
ELÉCTRICA, NO RETIRE LA CUBIERTA (NI LA PARTE
POSTERIOR). NO EXISTEN PIEZAS DE RECAMBIO EN EL
INTERIOR DEL EQUIPO. EL PERSONAL DE SERVICIO
CUALIFICADO SE ENCARGA DE REALIZAR LAS
REPARACIONES.
Este símbolo indica que existen puntos de tensión peligrosos
sin aislamiento dentro de la cubierta de la unidad. Estos
puntos pueden constituir un riesgo de descarga eléctrica.
El usuario debe consultar las instrucciones de funcionamiento y
mantenimiento (reparación) en la documentación que se
suministra con el aparato.
FCC & ICES INFORMATION
(U.S.A. and Canadian Models Only)
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received,
including interference that may cause undesired
operation.
NOTE: This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules and ICES-003 of Industry Canada. These limits
are designed to provide reasonable protection against harmful
interference when the equipment is operated in a residential
installation. This equipment generates, uses and can radiate radio
frequency energy, and if not installed and used in accordance
with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer, or an experienced radio/TV technician for
help.
Intentional or unintentional changes or modifications, not
expressly approved by the party responsible for compliance, shall
not be made. Any such changes or modifications could void the
user’s authority to operate the equipment.The user may find the
following booklet, prepared by the Federal Communications
Commission, helpful: How to Identify and Resolve Radio-TV
Interference Problems. This booklet is available from the U.S.
Government Printing Office, Washington, DC 20402,
Stock No. 004-000-00345-4.

LTC 4600 Series | Instruction Manual | Safety Precautions EN |5
Bosch Security Systems | September 20, 2004
Sicurezza
Attenzione: l'installazione deve essere effettuata esclusivamente
da personale tecnico qualificato in conformità con il National
Electrical Code o con le normative locali vigenti.
Scollegamento dell'alimentazione. Le unità dotate o sprovviste di
interruttori ON-OFF vengono alimentate quando si inserisce il
cavo nella presa dell'alimentazione. L'unità è tuttavia in funzione
solo quando l'interruttore ON-OFF si trova nella posizione ON. Il
cavo di alimentazione costituisce il dispositivo di scollegamento
dell'alimentazione principale per tutte le unità.
ATTENZIONE: PER RIDURRE IL RISCHIO DI SCOSSE
ELETTRICHE NON RIMUOVERE LA COPERTURA (O IL
PANNELLO POSTERIORE). L'UNITÀ NON CONTIENE
COMPONENTI INTERNI RIPARABILI DALL'UTENTE. PER
QUALSIASI INTERVENTO, RIVOLGERSI A PERSONALE
TECNICO QUALIFICATO.
Questo simbolo indica la presenza di "tensione pericolosa" non
isolata all'interno del contenitore del prodotto. Ciò comporta un
potenziale rischio di scosse elettriche.
Si consiglia di consultare le istruzioni operative e di
manutenzione (interventi tecnici) contenute nella
documentazione fornita con il dispositivo.
Veiligheidsmaatregelen
Attentie: het apparaat mag alleen door gekwalificeerd personeel
worden geïnstalleerd. De installatie dient in overeenstemming
met de nationale elektrische richtlijnen of de van toepassing
zijnde lokale richtlijnen te worden uitgevoerd.
Spanning uitschakelen. Apparatuur met of zonder
aan-uitschakelaar staat onder spanning zolang de stekker is
aangesloten op de wandcontactdoos. De apparatuur is uitsluitend
in werking als de aan-uitschakelaar aan staat. Het netsnoer is de
"hoofdschakelaar" voor alle apparatuur.
VOORZICHTIG: OPEN DE BEHUIZING OF DE ACHTERKANT
VAN HET APPARAAT NIET. ZO VERMINDERT U HET RISICO
OP ELEKTRISCHE SCHOKKEN. IN HET APPARAAT
BEVINDEN ZICH GEEN ONDERDELEN DIE U ZELF KUNT
REPAREREN. LAAT SERVICE EN ONDERHOUD UITVOEREN
DOOR GEKWALIFICEERD PERSONEEL.
Dit symbool geeft aan dat er binnen in het apparaat
ongeïsoleerde, gevaarlijke spanning aanwezig is die mogelijk
elektrische schokken kan veroorzaken.
De gebruiker dient de bedienings- en onderhoudsvoorschriften
te raadplegen in de documentatie die werd meegeleverd met
het apparaat.
Medidas de Segurança
Atenção: a instalação deve ser executada apenas por técnicos
qualificados da assistência, de acordo com o código eléctrico
nacional ou os códigos locais aplicáveis.
Corte de corrente. As unidades com ou sem interruptores
ON-OFF (ligar/desligar) recebem corrente sempre que o fio de
alimentação está introduzido na fonte de alimentação; contudo, a
unidade apenas está operacional quando o interruptor ON-OFF
está na posição ON. O fio de alimentação destina-se a desligar a
corrente em todas as unidades.
CUIDADO: PARA REDUZIR O RISCO DE CHOQUE
ELÉCTRICO, NÃO RETIRE A TAMPA (OU A PARTE
POSTERIOR). NO INTERIOR, NÃO EXISTEM PEÇAS QUE
POSSAM SER REPARADAS PELO UTILIZADOR. REMETA A
ASSISTÊNCIA PARA OS TÉCNICOS QUALIFICADOS.
Este símbolo indica a presença de "tensão perigosa" não
isolada dentro da estrutura do produto, o que pode constituir
risco de choque eléctrico.
O utilizador deve consultar as instruções de funcionamento
e manutenção (assistência) nos documentos que
acompanham o aparelho.

LTC 4600 Series | Instruction Manual | Table of Contents
Bosch Security Systems | September 20, 2004
EN |6
Table of Contents
Important Safeguards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
FCC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.1 Model Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.1 Installing Rack-mount Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.2 Installing Stand-alone Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.3 LTC 4641, LTC 4642 Series Modules for Video Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.4 LTC 4744, LTC 4745 Series Modules for Simultaneous 4-Channel Video Transmission . . . . . . . .10
4.5 LTC 4630, LTC 4631 Series Modules for BilinxTM Video/Data Transmissions . . . . . . . . . . . . . . . .11
4.6 LTC 4628, LTC 4629 Series Modules for Video + Bosch Biphase Control Code Transmission . .12
4.7 LTC 4671 Series Modules for System4/Allegiant® Keyboard Transmission . . . . . . . . . . . . . . . . . .14
4.8 LTC 4651 Series Modules for Bosch Biphase Control Code or RS-232 Transmission . . . . . . . . . .15
4.9 LTC 4681, LTC 4682 Series Modules for Ethernet Data Transmission . . . . . . . . . . . . . . . . . . . . . .16
4.10 LTC 4637 Series Rack-mount Card Cage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
7DIMENSIONAL OUTLINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

LTC 4600 Series | Instruction Manual | Unpacking
Bosch Security Systems | September 20, 2004
EN |7
1UNPACKING
This electronic equipment should be unpacked and
handled carefully. In addition to a copy of these
instructions, check for the following items:
1. Stand-alone units:
•Individual LTC 4600 or LTC 4700 Series
Module, and associated Power Supply
2. Rack-mount units:
•Individual LTC 4600 or LTC 4700 Series
Rack Plug-in Module
•Rack / Power Supply Card Cage
•Card Cage with integral Power Supply and
applicable AC Power Cord
If an item appears to have been damaged in shipment,
replace it properly in its carton and notify the shipper.
If any items are missing, notify your Bosch Security
Systems, Inc. Sales Representative or Customer
Service.
The shipping carton is the safest container in which the
unit may be transported. Save it for possible future use.
2SERVICE
If the unit ever needs repair service, the customer
should contact the nearest Bosch Security Systems, Inc.
Service Center for return authorization and shipping
instructions.
Service Centers
USA
Phone: [phone] or 717-735-6638
Fax: [phone] or 717-735-6639
CCTV Spare Parts
Phone: [phone] or 408-956-3853 or 3854
Fax: [phone]
E-mail: [email protected].com
Canada
Phone: [phone]
Europe, Middle East & Asia Pacific Region
Phone: [phone]
For additional information, see
www.boschsecuritysystems.com.
3DESCRIPTION
The LTC 4600 and LTC 4700 Series are transmission
systems that provide efficient, high quality video and data
transmission via multimode fiber optic cable for improved
CCTV system performance. Signals are immune to
ground loops, radio frequency interference (RFI),
electromagnetic interference (EMI), and cross talk
because the video carrier is infrared light, and is
transmitted through a nonconductive fiber optic cable.
Interference-free operation ensures reliable service. Unlike
microwave, wire, and coaxial cable transmission systems,
fiber optic transmission is difficult, if not impossible, to
tap. And, since fiber optic cable is nonconductive and
does not radiate a signal, it is difficult to detect and locate.
These compact devices are available in a surface mount
enclosure or in a modular style package that can be rack-
mounted using an optional EIA 19" compatible rack unit.
3.1 Model Summary
A list of available models is shown below. Complete
specifications can be found on the LTC 4600 Series
Data Sheet that can be downloaded from
www.boschsecuritysystems.com.
Model No. Description / Use
LTC 4641, LTC 4642 Series Single Channel Video Transmissions
LTC 4744, LTC 4745 Series 4-Channel Video Transmissions
LTC 4630, LTC 4631 Series BilinxTM Video/Data Transmissions
LTC 4628, LTC 4629 Series Video/Biphase Data Transmissions
LTC 4671 Series RS-485 Allegiant/DivarTM/System4 Keyboard
Data Transmissions
LTC 4651 Series RS-232 / Biphase Data Transmissions
LTC 4681, LTC 4682 Series 10/100Base-T Ethernet Data Transmissions
LTC 4637 Series Card Cage Enclosure for
Rack-mount Models

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |8
4INSTALLATION
4.1 Installing Rack-mount Modules
1. Install the LTC 4637 Series card cage unit as
described in a later section of this document.
2. Install the fiber optic plug-in module into any
available slot of the LTC 4637 Series rack-mount
card cage. Certain modules, such as the LTC 4744
and LTC 4745 units are double width, so they
require two (2) available rack-mount slots.
•Push the module in completely, so that the 3-pin
connector on the rear of the card engages the
3-pin connector on the back plane.
•Each fiber optic plug-in module is equipped
with a power LED indicator that illuminates
when power is applied to the rack unit.
3. Fasten the module into place by tightening the front
panel captive screws into the appropriate mating
holes with a small flat blade screwdriver.
4. Connect the applicable video and/or data
connections to the appropriate connectors, located
either on the front or rear of the module. Refer to
the example diagrams later in the individual
sections.
4.2 Installing Stand-alone Modules
1. Choose an appropriate flat surface where the
stand-alone module can be conveniently mounted,
then mark the locations of the keyhole slots on the
mounting flanges.
•The LTC 4641 Series Video Transmitter is small
enough to be installed inside a camera housing.
If applicable, mount the module in a convenient
location where it will not obstruct access to
other items in the housing.
2. Install the appropriate mounting screws (not
supplied) into the keyhole locations. Allow
sufficient leeway under the screw head for the
module to be mounted.
•For the LTC 4641 Series Video Transmitter, a
single mounting hole is provided to secure the
module.
3. For modules other than the LTC 4641 Series,
position the module over screw heads, slide to one
side, and then tighten screws.
4. Connect the cable from the supplied power supply
to the power input terminals on the module.
5. Connect the supplied power supply to an
appropriate power source.
6. Connect the applicable video and/or data
connections to the appropriate connectors on the
module. Refer to example diagrams for exact
details.

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |9
4.3 LTC 4641, LTC 4642 Series Modules for Video Transmission
4.3.1 Indicators / Operation
1. The POWER LED illuminates when AC power is applied to the unit.
2. LTC 4642/60 and LTC 4642/50 units: The Video Out / AGC LED illuminates GREEN when a video signal
is being received, or RED if a video signal is not present.
Typical Configurations:
COAX
CABLE
BLACK
Up to 4 km (2.5 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
AC
POWER
POWER
SUPPLY
POWER
SUPPLY
LTC 4641/x0
Stand-alone Model
OPTICAL
OUT
LTC 4642/x0
Stand-alone Model
BLACK with
WHITE
MARKINGS
BLACK
BOSCH
MONITOR
CAMERA
LTC 4642
VIDEO RECEIVER
VIDEO OUT / AGC
POWER
OPTICAL IN
VIDEO OUT
POWER - 2
+12 VDC - 1
BOSCH
+9-12VDC
3
2
1
LTC 4641
VIDEO TX
GND
NC
BOSCH
BLACK with
WHITE
MARKINGS
POWER
IN from
RACK
VIDEO
OUT
OPTICAL
IN
COAX
CABLE
Front
View
LTC 4642/00
Rack-mount Model
(in LTC 4637 Card Cage)
Side
View of
Rear
BOSCH
MONITOR
BLACK
Up to 4 km (2.5 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
POWER
SUPPLY
LTC 4641/x0
Stand-alone Model
OPTICAL
OUT
CAMERA
+9 -12VDC
3
2
1
LTC 4641
VIDEO TX
GND
NC
BOSCH
BLACK with
WHITE
MARKINGS
LTC 4642
VIDEO
OUT
AGC
POWER
BOSCH
VIDEO
RECEIVER
Figure 1 LTC 4641 Series Stand-alone Transmitter and LTC 4642 Series Stand-alone Receiver
Figure 2 LTC 4641 Series Stand-alone Transmitter and LTC 4642 Series Rack-mount Receiver

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |10
4.4 LTC 4744, LTC 4745 Series Modules
for Simultaneous 4-Channel Video
Transmission
4.4.1 Indicators / Operation
1. The POWER LED illuminates when AC power is
applied to the unit.
2. LTC 4744/00 units: Although this module provides
both front and rear mounted BNC input connectors
for installation convenience, each input channel is
capable of accepting only a single video signal.
NOTE: Avoid simultaneously connecting video signals
to both the front BNC and rear BNC of the same
channel. Also, since each video channel is factory
terminated to 75Ω, unused BNCs should not be used
for loop-through video connections.
3. LTC 4744/60, LTC 4744/50, and LTC 4744/00
units: The respective CAMERA ON LED
illuminates when a video signal is connected to its
input.
4. LTC 4745/60, LTC 4745/50, and LTC 4745/00
units: The LOCAL VIDEO ON LED illuminates
when the respective channel of the unit is providing
a video signal output. The REMOTE VIDEO ON
LED illuminates when a video signal is connected
to the respective input of the LTC 4744 Series
transmitter.
Typical Configuration:
CAMERA
CAMERA
CAMERA
CAMERA
BOSCH
MONITOR
AC
POWER
POWER
SUPPLY
BLACK
Up to 3 km (1.9 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
Video Signal
Video
Coax
Video
Coax
LTC 4744
4 CHANNEL DIGITAL
VIDEO TRANSMITTER
POWER
CAMERA ON
OPTICAL OUT
POWER -2
+12VDC - 1
1
BOSCH
2
3
4
AC
POWER
POWER
SUPPLY
BLACK with
WHITE
MARKINGS
BLACK
LTC 474 5
4 CHANNEL DIGITAL
VIDEO RECEIVER
POWER POWER - 2
+12VDC - 1
1
BOSCH 2
3
4
OPTICAL
INPUT
VIDEO
OUTPUT
RECEIVER
LOCKED
CHANNEL 4
CHANNEL 3
CHANNEL 2
CHANNEL 1
LOCAL VIDEO ON
REMOTE VIDEO ON
Typical Digital Video Recorder,
Matrix Switcher, Multiplexer, or other
Video Management Device
BLACK with
WHITE
MARKINGS
Figure 3 LTC 4744 Series Stand-alone Transmitter and LTC 4745 Series Stand-alone Receiver

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |11
4.5 LTC 4630, LTC 4631, Series Modules
for Bilinx Video/Data Transmissions
4.5.1 Important Considerations
1. To ensure proper Bilinx communications, the
video output of the LTC 4631 Series module
must be terminated into a proper 75Ωload. If
improper video looping connections are used,
erratic or no camera P/T/Z control may result.
2. Do not exceed the published distance
specification for Bilinx communications. Erratic
or no camera P/T/Z control may result. Refer to
the data sheet for product specifications.
3. Although these modules are compatible with
Bilinx up-the-coax communication technology
found in Bosch Security System products,
compatibility is not guaranteed when used with
similar technologies employed by other
manufacturers.
4.5.2 Indicators / Operation
1. The POWER LED illuminates when AC power
is applied to the unit.
2. LTC 4631 Series units: Once the video signal
and fiber optic connections have been
completed, the state of the VIDEO OUT and
AGC LED indicators should be examined. If
both are GREEN, test the VIDEO OUT LED
action by temporarily removing the video signal
from the LTC 4630 module. The LED should
turn RED.
If necessary, adjust the AGC control in small
increments until the correct LED actions are
obtained. Marginal signal strengths are indicated
by an AMBER color LED, and a RED LED
indicates video loss, or that further adjustments
are needed. The adjustment is sensitive. Adjust
the control too high, and the VIDEO OUT
LED may remain lit even when the video signal
is removed or lost. If adjusted too low, the
VIDEO OUT LED may remain RED even if a
video signal is present.
Typical Configuration:
BOSCH
VIDEO + Bilinx DATA
BOSCH
ALLEGIANT Video System
CODE OUT ALARM STATUS BATTERY LOW POWER
DATA
TYPICAL ALLEGIANT SERIES SWITCHER/CONTROLLER,
DIVAR DIGITAL VIDEO RECORDER, BILINX
CONFIGURATION TOOL PROGRAM, OR OTHER BOSCH
SECURITY SYSTEMS CONTROL SYSTEM
INTUIKEY® SERIES KEYBOARD
Bilinx-ENABLED
AUTODOME SERIES
P/T/Z CAMERA
1 2 3
4 5 6
789
0
Shot
Mon
Prod
Clr
BOSCH
LTC 8016 ALLEGIANT
BILINX DATA INTERFACE
VIDEO + Bilinx DATA
VIDEO
VIDEO
BOSCH
ALLEGIANT Bilinx Data Interface Status/Power
AC
POWER
POWER
SUPPLY
BLACK
Up to 600 m (2000 ft) using
62.5/125 micron
Multimode Fiber Optic Cable
BLACK with
WHITE
MARKINGS
AC
POWER
POWER
SUPPLY
BLUE
GREEN
BROWN
LTC 4631
BILINX/UP THE COAX
VIDEO RECEIVER + DATA TRANSMITTER
POWER +12 VDC - 1
BOSCH
OPTICAL CABLE
POWER
AGC
AGC LEVEL
VIDEO OUT
- 2
VIDEO OUT
LTC 4630
BILINX/UP THE COAX
VIDEO TRANSMITTER + DATA RECEIVER
POWER
OPTICAL CABLE
BOSCH
POWER
AC - 3 - 2
+12VDC - 1
+12VDC
AC - 1
- 2
24VAC CT
VIDEO IN
VIDEO + Bilinx DATA
Figure 4 LTC 4630 Series and LTC 4631 Series Stand-alone Bilinx Transceivers

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |12
4.6 LTC 4628, LTC 4629 Series Modules
for Video + Bosch Biphase Control
Code Transmission
4.6.1 Indicators / Operation
1. The POWER LED illuminates when AC power is
applied to the unit.
2. LTC 4628/60, LTC 4628/50, and LTC 4628/00
units: The VIDEO PRESENT LED illuminates
GREEN when a valid video signal is present, or
RED if no video is being received. The DATA
RECEIVE LED illuminates RED when no data is
received, and flashes YELLOW as data is received.
3. LTC 4629/60, LTC 4629/50, and LTC 4629/00
units: The VIDEO OUT LED illuminates GREEN
when a valid video signal is present on the
LTC 4628 Series Transmitter, or RED if no video is
present. The DATA IN LED illuminates RED if no
data is being received on the optical signal, and
flashes YELLOW as data is received.
LTC 4629
VIDEO RECEIVER + DATA TRANSMITTER OPTICAL
IN/OUT
DATA IN
VIDEO OUT
POWER
VIDEO OUT
POWER - 2
+12VDC- 1
- 4
-DATA - 3
- 2
+DATA - 1
RS232
RS422
BOSCH - 5
- 6
BOSCH
ALLEGIANTVideoSystem
CODE OUT ALARM STATUS BATTERY LOW POWER
BOSCH
MONITOR
BOSCH AutoDome Series with
Integrated Fiber Optic Module
AC
POWER
POWER
SUPPLY
BLACK with
WHITE
Markings
BLACK
Data "-" to Pin 3
Data "+" to Pin 1
Biphase Control
Code Output
Typical Allegiant Series
Switcher, System4 Series
Multiplexer, or other Device
Generating BOSCH Biphase
Control Code
IntuiKey Series
Keyboard
Up to 4 km (2.5 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
Biphase Control Data
Video Signal
Video
Coax
Video
Coax Keyboard
Data Cable
123
456
789
0
Sh
ot
Mo
n
Pro
d
Cl
r
BOSCH
Figure 5 LTC 4629 Series Stand-alone Transceiver Used with AutoDome® Fiber Unit
Typical Configurations:

LTC 4600 Series | Instruction Manual | Chapter
Bosch Security Systems | 10 October 2003
EN |13
LTC4628
DATA
RECEIVE
VIDEO
PRESENT
POWER
VIDEO XTMR
DATAREC
BOSCH
LTC4629
VIDEOREC
+
DATAXTMR
DATA
IN
VIDEO
OUT
AGC
POWER
BOSCH
12 34 56
VIDEO
OUT
DATA IN
Data "-" to Pin 3
Data "+" to Pin 1
Biphase Control
Code Output
Typical Allegiant Series
Switcher, System4 Series
Multiplexer, or other Device
Generating BOSCHBiphase
Control Code
Video
Coax
IntuiKey Series
Keyboard
Video
Coax
Keyboard
Data Cable
Typical BOSCH AutoDome
Series Camera
POWER
IN from
RACK
OPTICAL
IN/OUT
Side
View of
Rear
Front
View
LTC 4628/00
Rack-mount Model
(in LTC 4637 Card Cage)
LTC 4629/00
Rack-mount Model
(in LTC 4637 Card Cage)
12 3 4
VIDEO
IN
DATA OUT
POWER
IN from
RACK
OPTICAL
IN/OUT
Side
View of
Rear
Data "+" to Pin 2
Data "-" to Pin 1
Front
View
Up to 4 km (2.5 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
Biphase Control Data
Video Signal
Biphase
Control
Code
Video
Coax
123
456
789
0
Sh
ot
Mo
n
Pro
d
Cl
r
BOSCH
BOSCH
MONITOR
BOSCH
ALLEGIANT Video System
CODEOUTALARMSTATUSBATTERYLOWPOWER
Figure 7 LTC 4628/00 and LTC 4629/00 Rack-mount Transceivers
AC
POWER
POWER
SUPPLY
BLACK with
WHITE
Markings
BLACK
Data "-" to Pin 3
Data "+" to Pin 1
Biphase Control Code
Typical Allegiant Series
Switcher, System4 Series
Multiplexer, or other Device
Generating BOSCHBiphase
Control Code
Video
Coax
IntuiKey Series
Keyboard
Up to 4 km (2.5 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
Biphase Control Data
Video Signal
LTC 4628
VIDEO TRANSMITTER + DATA RECEIVER
DATA RECEIVE
VIDEO PRESENT
POWER
OPTICAL IN/OUT
VIDEO IN
POWER
AC - 3 - 2
+12VDC - 1
+12VDC
AC - 1
- 2
24VAC CT
D - 4
GND - 3
+D - 2
-D - 1
RS-232
RS-422
DATA
OUT
BOSCH
AC
POWER
POWER
SUPPLY
BLUE
GREEN
BROWN
Typical BOSCH AutoDome
Series Camera
Video
Coax
Keyboard
Data Cable
Video
Coax
Data "-" to Pin 1
Biphase Control
Code Output
Video Coax
Data "+" to Pin 2
123
456
789
0
Sh
ot
Mo
n
Pro
d
Cl
r
BOSCH
BOSCH
MONITOR
LTC 4629
VIDEO RECEIVER + DATA TRANSMITTER OPTICAL
IN/OUT
DATA IN
VIDEO OUT
POWER
VIDEO OUT
POWER - 2
+12VDC- 1
- 4
-DATA - 3
- 2
+DATA - 1
RS232
RS422
BOSCH
- 5
- 6
BOSCH
ALLEGIANT Video System
CODEOUTALARMSTATUSBATTERYLOWPOWER
Figure 6 LTC 4628 and LTC 4629 Series Stand-alone Transceivers

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |14
4.7 LTC 4671 Series Modules for
System4 / Allegiant Keyboard
Transmission
1. The supplied 120Ωresistor must be installed across
the external data connections when these fiber optic
modules are used with certain controller devices.
Follow the guidelines below, however, because of
differences between the hardware of new and old
controller units, these cases are not absolute. If a
configuration does not work when first connected
without using a termination resistor, try adding the
termination resistor across the data connections of
the fiber optic module located at the controller site.
A termination resistor is typically required when a
module is connected to the following controller
devices:
•Allegiant LTC 8100 Series main CPU bays
•Allegiant LTC 8200 Series main CPU bays
•Allegiant LTC 8300 Series main CPU bays
•Allegiant LTC 8900 Series main CPU bays
•LTC 8714 Series Allegiant Keyboard Expander
accessory units sold prior to 2002
•LTC 2604 Series Multiplexer Keyboard `
Expander
A termination resistor is typically NOT required when
a module is connected to the following controller
devices:
•Allegiant LTC 8500 Series main CPU bays
•Allegiant LTC 8600 Series main CPU bays
•Allegiant LTC 8800 Series main CPU bays
•LTC 8714 Series Allegiant Keyboard Expander
accessory units sold during or after 2002
If the supplied resistor is damaged or lost, any locally
obtained conventional 1/4 watt carbon resistor between
120Ωand 390Ωshould suffice.
2. The POWER LED will light when AC power is
applied to the unit.
3. The DATA XTMR LED will flash as the external
data received by the unit is being optically
transmitted.
4. The DATA REC LED will flash as optical data is
being received by the unit.
IntuiKey Series
Keyboard
Keyboard
Data Cable
LTC 4671
RS485
DATA
REC
POWER
DATA
XTMR
- 4
- 3
-- Data - 2
+ Data - 1
BOSCH
AC
POWER
POWER
SUPPLY
AC
POWER
POWER
SUPPLY
LTC 8557
Junction Box
3
2
1
4
123
456
789
0
Sh
ot
Mo
n
Pro
d
Cl
r
BOSCH
BOSCH
ALLEGIANT Video System
CODE OUT ALARM STATUS BATTERY LOW POWER
Up to 4 km (2.5 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
LTC 8557
Junction Box
3
2
1
4
To Allegiant Keyboard Port
Using Keyboard Data Cable
Typical Allegiant Main CPU Bay or Allegiant Keybord Port Expander
LTC 8557
Junction Box
3
2
1
4
Refer to Text
Regarding Supplied
120ΩResistor
LTC 4771
RS485
TRANSCEIVER
XTMR
PWR
REC
BOSCH
12 3 4 5 6
POWER
IN from
RACK
Side View
of Rear
Front
View
BOSCH
MONITOR
Separate Video
Transmission Link
1- Data "+"
2- Data "-"
LTC 4671/00
Rack-mount Model
(in LTC 4637 Card Cage)
POWER
-2
+12VDC - 1
Figure 8 LTC 4671 Series Stand-alone Transceiver and LTC 4671 Rack-mount Transceiver
Typical Configuration:

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |15
4.8 LTC 4651 Series Modules for Bosch
Biphase Control Code or RS-232
Transmission
4.8.1 Indicators / Operation
1. The POWER LED will light when AC power is
applied to the unit.
2. The TRANSMIT LED flashes as the external
data received by the unit is optically
transmitted.
3. The RECEIVE LED flashes as optical data is
received by the unit.
Typical Configurations:
BOSCH
RECEIVE
TRANSMIT
LTC 4651
RS-232/BI-PHASE TRANSCEIVER
8
7
6
5
4
3
2
1
RS232 Rx/+ DATA IN
- DATA IN
+ DATA OUT
- DATA OUT
RS232 TRANSMIT
+12 VDC
POWER
BOSCH
ALLEGIANT Video System
CODE OUT ALARM STATUS BATTERY LOW POWER
Separate Video Signal
Transmission Link
BOSCH
MONITOR
Up to 3.5 km (2 mi) Using
62.5/125 micron
Multimode Fiber Optic Cable
FIBER
OPTIC
CABLE
FIBER
OPTIC
CABLE
BIPHASE
CONTROL
DATA
CABLE
VIDEO
BIPHASE
CONTROL
DATA
AUTODOME SERIES
P/T/Z CAMERA
1 2 3
456
7 8 9
0
Control System
Generating Biphase
Control Code
BOSCH
RECEIVE
TRANSMIT
LTC 4651
RS-232/BI-PHASE TRANSCEIVER
8
7
6
5
4
3
2
1
RS232 Rx/+ DATA IN
- DATA IN
+ DATA OUT
- DATA OUT
RS232 TRANSMIT
+12 VDC
POWER
VIDEO
VIDEO
Figure 9 LTC 4651 Series Stand-alone Transceivers – Biphase Code Transmission
Up to 3.5 km (2 mi) using
62.5/125 micron
Multimode Fiber Optic Cable
RS-232
DATA
LTC 4651
RS232/
BIPHASE
TRANSMIT
POWER
RECEIVE
BOSCH
12 3 4 5 6 7
Side View
of Rear
Front
View
POWER
IN from
RACK
GROUND
RS232 TRANSMIT
RS232 Rx/+ DATA IN
- DATA IN
+ DATA OUT
- DATA OUT
FIBER
OPTIC
CABLES
FIBER
OPTIC
CABLES
BOSCH
ALLEGIANT Video System
CODE OUT ALARM STATUS BATTERY LOW POWER
TYPICAL ALLEGIANT SERIES
SWITCHER/CONTROLLER
TYPICAL PC RUNNING
ALLEGIANT MASTER CONTROL
SOFTWARE PROGRAM
GROUND
Optical Out
Optical In
LTC 4651
RS232/
BIPHASE
TRANSMIT
POWER
RECEIVE
BOSCH
12 3 4 5 6 7
Side View
of Rear
Front
View
POWER
IN from
RACK
GROUND
RS232 TRANSMIT
RS232 Rx/+ DATA IN
- DATA IN
+ DATA OUT
- DATA OUT
GROUND
Optical Out
Optical In
RS-232
Data
Interface
Cable RS-232
Data
Interface
Cable
Figure 10 LTC 4651 Series Rack-mount Transceivers – RS-232 Transmission

LTC 4600 Series | Instruction Manual | Installation
Bosch Security Systems | September 20, 2004
EN |16
4.9 LTC 4681, LTC 4682 Series Modules
for Ethernet Data Transmission
NOTE: Although the LTC 4681 and the LTC 4682 are
both transceivers, one of each type must be used to
create a working ethernet fiber optic link. It does not
matter which model is used at a particular side of a
configuration.
4.9.1 Indicators / Operation
1. Set Dip Switches as Follows:
a) Dip Switch 1: AUTO NEGOTIATE –
Recommended setting is UP. When active,
speed and twisted pair connection type (mdi or
mdi-x) is automatically sensed. When disabled,
a cross over cable must be used, and both ends
of the link must be fixed at the same speed and
duplex setting.
b) Dip Switch 2: SPEED – This setting applies only
when AUTO NEGOTIATE is disabled. This
setting forces the connection speed to either
10Mbps (UP position) or 100Mbps (DOWN
position). The recommended setting is 100Mbps.
c) Dip Switch 3: DUPLEX – This setting applies
only when AUTO NEGOTIATE is disabled.
This setting forces the connection type to either
half duplex (UP position) or full duplex (DOWN
position). The recommended setting is Full
Duplex.
2. The POWER LED illuminates when AC power
is applied to the unit.
3. The FIBER LINK LED illuminates when a valid
optical link is established.
4. The AUTO NEGOTIATE ON/OFF LED
illuminates to indicate that Dip Switch 1 is set to
AUTO NEGOTIATE mode.
5. The LED at the top left of the RJ-45 ethernet
connector illuminates GREEN when a valid
ethernet connection link is established.
6. The LED at the top right of the RJ-45 ethernet
connector illuminates GREEN to indicate a
100Mbps connection speed. If the LED illuminates
ORANGE, the connection speed is 10Mbps.
Up to 10 km (6.2 mi)
Using 62.5/125 micron
Multimode Fiber Optic Cable
FIBER
OPTIC
CABLE
FIBER
OPTIC
CABLE
10/100Base-T
ETHERNET
TYPICAL PC RUNNING DIVAR
REMOTE VIEWER SOFTWARE
BOSCH
Divar Digital Versatile Recorder
SEARCH
B
ACK ALT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16LIVE
F2F1 ESC A
10/100Base-T
ETHERNET
TYPICAL DIVAR SERIES DIGITAL VIDEO RECORDER
LTC 4681
OPTICAL ETHERNET TRANSCEIVER
FIBER IN/OUT
FIBER LINK
AUTO NEGOTIATE ON/OFF
POWER
10BASE-T / 100BASE-TX
POWER - 2
+12VDC - 1
FIBER LINK CONTACT
BOSCH
OFF
1 -- AUTO NEGOTIATE
2 -- SPEED
3 -- DUPLEX
Side
View of
Rear
Front
View
LTC 4682
OPTICAL
ETHERNET
TRANSCEIVER
OFF
FIBER
LINK
AUTO
NEGOTIATE
POWER
BOSCH
1
2
3
Relay Out
POWER
IN from
RACK
12
Figure 11 LTC 4681 Series Stand-alone Transceiver and LTC 4682 Rack-mount Transceiver
Typical Configuration:

LTC 4600 Series | Instruction Manual | Replacement Parts
Bosch Security Systems | September 20, 2004
EN |17
4.10 LTC 4637 Series Rack-mount
Card Cage
4.10.1 Installation
1. Install the LTC 4637 Series Rack-mount into a
standard EIA 19in. rack, using user-supplied rack-
mounting hardware. Be careful to not damage
exposed objects on the back of the card cage unit.
2. Verify that the rear panel AC voltage selector
switch is set to match the available AC mains
voltage.
3. Connect the supplied AC voltage line cord between
the rear of the power supply and the appropriate
AC voltage source.
4. Fiber optic plug-in modules can be installed into
any of the available 14 slots of the card cage. Most
modules require only a single slot width, but others,
such as the LTC 4644 and LTC 4645 Series, require
two slot widths.
5. If desired, LTC 4600/00 blank panels (ordered
separately) may be installed to cover unused slots.
A single blank panel covers a single slot opening.
6. Refer to the sections of this manual for specific
installation instructions regarding the plug-in
modules.
4.10.2 Indicators
1. LTC 4637 Series front panel LED illuminates when
AC power is applied to the unit.
2. Each fiber optic plug-in module is equipped with a
POWER LED indicator that illuminates when
power is applied to the rack unit.
4.10.3 LTC 4637 Maintenance / Service
Information
1. The power supply is fused with a 1A slow blow
fuse. To replace the fuse, remove the AC power line
cord from the power supply, and carefully pry out
the fuse module above the AC connector.
2. The 3-pin connector on the rack supplies a 20VAC
center tapped voltage, and is the only electrical
connection from the back plane to a plug-in
module. Each plug-in module contains its own
fuse, so in the unlikely event of a module failure,
the other modules in the rack remain unaffected.
3. The power supply is modular in construction, and
can be replaced in the event of damage or failure.
To remove the power supply from the rack:
a) Disconnect the AC line cord and power supply
cable from the circuit board back plane, located
on the rear of the card cage.
b) Loosen the four (4) screws located at the front of
the power supply using a small flat blade
screwdriver. Slide the power supply out of
the card cage.
c) Reverse the above procedure to install the power
supply into the card cage.
5REPLACEMENT PARTS
TC120PS – Power Supply for 120VAC Stand-alone
Modules
TC220PS – Power Supply for 230VAC Stand-alone
Modules
Figure 12 LTC 4637 Series Typical Installation
LTC 4637/60
power supply
Power
BOSCH

LTC 4600 Series | Instruction Manual | Troubleshooting
Bosch Security Systems | September 20, 2004
EN |18
6TROUBLESHOOTING
Video Links:
Video Problems
Power Problems
•Verify that a valid video signal is being applied to the transmitter module
•Verify the integrity of the coax connections between devices and fiber modules
•Verify that the correct fiber cable is being used (i.e., multimode only)
•Verify that the length of the fiber optic cable and associated splices do not exceed the allowable optical
loss budget
•Verify the power cable connections between modules and power pack
•Verify that the power pack is connected to the appropriate AC power source
Data Links:
Data Transmission
Problems
Power Problems
•Verify the polarity of data connections between devices
•If data transmission is not working over the fiber link, verify that a direct connection between the
associated products operates correctly
•Verify the integrity of the data cable connections between devices and fiber modules
•Verify that the correct fiber cable is being used (i.e., multimode only)
•Verify that the length of the fiber optic cable and associated splices do not exceed the allowable optical
loss budget
•When using LTC 4671 Series RS-485 modules, review the text regarding the usage of termination resistor
•Verify power cable connections between modules and power pack
•Verify that the power pack is connected to the appropriate AC power source
LTC 4637 Series Rack-mount Configurations:
Power LED on the Power
Supply Fails to Light
Power LED on all Plug-in
Modules Fails to Light
Power LED on Individual
Plug-in Modules Fails to
Light
•Verify that the AC line cord is connected to an appropriate AC voltage source
•Check and/or replace the AC fuse located near the AC connector on the rear of the power supply
•Verify that the power supply cable to the circuit board back plane (located on the rear of the card cage) is
properly connected
•Verify that affected plug-in modules are properly seated onto the back plane 3-pin connector
•Verify that fuses on the affected plug-in modules are intact. If not, return for repair.

LTC 4600 Series | Instruction Manual | Dimensional Outlines
Bosch Security Systems | September 20, 2004
EN |19
7DIMENSIONAL OUTLINES
Figure 13 Stand-alone Modules: LTC 4641/60, LTC 4641/50
Figure 14 Stand-alone Modules: LTC 4642/50, LTC 4642/60,
LTC 4651/60, LTC 4651/50
1.19
30 1.0
25.4
2.5
64
1.6
41
+9-12VDC 3
2
1
LTC 4641
VIDEO TX
GND
NC
BOSCH
mm
in
BOSCH
1.0
25
3.06
78
mm
in
3.5
89
mm
in
mm
in
4.2
107
76
3

LTC 4600 Series | Instruction Manual | Dimensional Outlines
Bosch Security Systems | September 20, 2004
EN |20
Figure 15 Stand-alone Modules: LTC 4744/50,
LTC 4744/60, LTC 4671/60, LTC 4671/50,
LTC 4628/60, LTC 4628/50, LTC 4629/60,
LTC 4629/50, LTC 4681/60, LTC 4682/50,
LTC 4630/50, LTC 4630/60, LTC 4631/50,
LTC 4631/60
Figure 16 Stand-alone Modules: LTC 4745/50,
LTC 4745/60
Figure 17 Rack-mount Modules: LTC 4600/00,
LTC 4642/00, LTC 4651/00, LTC 4671/00,
LTC 4628/00, LTC 4629/00, LTC 4681/00,
LTC 4682/00, LTC 4630/00, LTC 4631/00
Figure 18 Rack-mount Modules: LTC 4744/00,
LTC 4745/00
Figure 19 Card Cage: LTC 4637/60, LTC 4637/50
4.9
125
1.0
25
BOSCH
mm
in
4.45
113
7. 0
178
140
5.5
4.9
125
BOSCH
mm
in
7. 0
178
50.0
2.0
140
5.5
113
4.45
LTC 4xxx
BOSCH
1 LTC 4637
Rack Width
mm
in
128
5.0
LTC 46xx
2 LTC 4637
Rack Widths
BOSCH
128
5.0
mm
in
LTC 4637/60
POWER SUPPLY
POWER
BOSCH
133
5.25
(3U)
38
1.5
95
3.75
mm
in
483
19