LDT Littfinski Daten Technik DB-2-G Operation Instruction

To enable the DigitalBooster DB-2 to supply the maximal possible digital current it
has to get a minimum of 52VA from a model railway transformer at clamp KL1.
The transformer output voltage can be between 16 and 18 Volt AC.

If the transformer supplies already other consumers on the layout you have to take
special attention to the correct terminal occupation at the supply clamp KL1. You
have to attend to the correct colors "yellow" and "brown" by connecting to a
command station of Märklin Control Unit or Intellibox.

3. Booster connected to a rail:

The digital current of the DigitalBoosters DB-2 is available at clamp KL2 next to the
light emitting diode.

Each booster must supply an own current circuit on the layout.

Therefore the center conductor of a 3-conductor rail has to be isolated at the
joint to the next current-circuit.

The output "brown" of the clamp KL2 supplies both rails. The output "red" supplies
the center conductor of the isolated section.

On the 2-conductor rail shall as minimum one rail be isolated at the joints. The
rail inside the isolated section gets the supply from the output "red" of the booster
clamp KL2. The second rail (not necessarily isolated) receives the supply from
output "brown".

Booster in action:

After switching-on the model railway layout and actuating the push button "GO" at
the command station the red light emitting diode (LED) of the DigitalBooster DB-2
will glow. This indicates that the booster supplies digital current to the connected rail­section.

The booster will switch automatically off by any short circuit at the rail section.
The red light emitting diode will go out. The event of a short circuit will be reported

from the booster to the command station via the 5-poles booster bus. These will
switch to "Stop".

After eliminating the short circuit you can supply digital current to the rail by
actuating again the push button "Go" at the command station.

Will the current at the connected rail section extend 2.5 Ampere the booster will
switch off as well, to prevent overheating.

Booster assembly:

Please assemble the Booster DB-2 at a location that sufficient air can circulate at
the heat sink.

If you have purchased the Booster DB-2 as a kit you can assemble the completed
unit into a suitable empty case LDT-01. This case is available as accessory within
our program.

Littfinski DatenTechnik (LDT)

Operating Instruction

DigitalBooster DB-2

from the Digital-Professional-Series !

DB-2-G Part-No.: 080063

>> finished module in a case <<

The DigitalBooster DB-2 is a short-circuit-proofed power

amplifier (booster) for digital model railway layouts.

Maximal power output: 2.5A.

The DB-2 amplifies the data formats Märklin-Motorola, mfx®,

M4 and DCC

The DB-2 can be directly operated on several digital

command stations by use of the attached 5-poles booster-

⇒ Control Unit (6021)
⇒ Central Station 1 and 2 (CS1 and CS2)
⇒ Intellibox, EasyControl, ECoS, DiCoStation, KeyCommander
⇒ TWIN-CENTER

This product is not a toy! Not suitable for children under 14 years of age! The kit contains small parts, which
should be kept away from children under 3! Improper use will imply danger of injuring due to sharp edges and
tips! Please store this instruction carefully.

Multi-Digital

CE Part-No.:
49 91 41

bus cable:

Made in Europe by

Littfinski DatenTechnik (LDT)

Kleiner Ring 9

D-25492 Heist/Germany

Phone: [phone] / 977 381

Fax: [phone] / 977 382

Internet: http://www.ldt-infocenter.com

Subject to technical changes and errors.  03/2015 by LDT

Märklin and Motorola are registered trade marks.

Introduction / Safety instruction:

You have purchased the DigitalBooster DB-2 for your model railway. The DB-2 is a
high quality product that is supplied within the assortment of Littfinski DatenTechnik
(LDT).

We are wishing you having a good time using this product!
The finished module in a case comes with a 24 month warranty.

• Please read the following instructions carefully. Warranty will expire due to damages
caused by disregarding the operating instructions. LDT will not be liable for any
consequential damages caused by improper use or installation.

Connecting the booster to the digital system:

• Attention: Before starting the installation switch off the drive voltage by
pushing the stop button or disconnect the main supply.

1. Booster connected to the command station respectively to

other boosters:

The DigitalBooster DB-2 is a power -amplifier for your digital model railway layout. It
supplies digital current to an own rail section.

The DB-2 shall be connected to the digital command station (e.g. Central Station
Control Unit, Intellibox, TWIN-CENTER, DiCoStation) or to an other booster (e.g. DB­2, DB-4, 6015, 6017, Power 2, Power 3) with the supplied 5-poles booster-bus-
cable. The first booster shall be always directly connected to the command station via
the 5-poles cable. The second booster shall be connected to the first booster etc.

Connect the plug of the attached 5-poles booster-bus-cable to the command station or
the previous booster. The correct position of the plug at Control Unit, Intellibox,
TWIN-CENTER, Märklin Booster 6017, Power 2 and Power 3 is, that the cable at
the plug shows downwards. The booster-bus cable attached to the DB-2 has to
show upwards by connecting to Märklin Booster 6015.

If you use the DigitalBooster DB-2 on the PC-Direct Control DIGITAL-S-INSIDE
insert the plug to the pin-plug bar of the pc-adapter or to the DiCoStation so that the

white single wire of the cable corresponds to the white marking on the pin-plug
bar. The cable will go now straight away from the adapter.

The second plug of the booster-bus cable has to be connected at the DigitalBooster
DB-2 on the pin-plug-bar ST1 marked with "IN".

Please attend to the correspondence of the white single wire of the 5-poles cable with
the white marking on the pin-plug-bar ST1.

You have connected the plug of the attached 5-poles booster-bus cable correct to the
DigitalBooster DB-2 whenever the twisted cable goes straight away from the booster.

Other manufacturers supply a 5-poles ribbon-cable as booster cable. If you use
these connect the plug on the pin-plug bar ST1 so that the ribbon-cable shows to the
booster cover and has then to be directed over the plug to the command station or to
the previous booster.

Shall a following booster connected to the DigitalBooster DB-2 by using the 5-poles
booster-bus cable it has to be connected to the pin-plug bar ST2 ("OUT").

2. Booster connected to the model railway transformer:

The DigitalBooster DB-2 supplies a maximal digital current of 2.5 Ampere to the
rail.

DB-2

Rev. 2.4

Digital-Profi werden!

MF1

KK1

DigitalBooster-2

DB-2

2,5 Ampere Booster für die Digitalformate
Marklin-Motorola, mfx®, M4 und DCC.

KL2

LED1

+

red brown brown yellow

K

J

rot

braun

red

brown

Zum Gleis
To the track

Boosterkabel von
der Zentrale oder vom
vorhergehenden Booster
Boostercable from
command station or from
previous booster

L

ittfinski DatenTechnik (

Multi-Digital

www.ldt-infocenter.com

ST1 ST2

Littfinski DatenTechnik (LDT)

Zum nächsten Booster
To next booster

OUTIN

D-25492 Heist

weiss
white

LDT

)

KL1

16...18V~

gelb

braun

yellow

brown

Vom Modellbahntrafo
From transformer