L
ittfinski
D
aten
T
echnik (
LDT
)
Assembly Instruction
8-fold track occupancy
detector
from the
Digital-Professional-Series
!
GBM-8-B
Part-No.:
020001
>> kit <<
⇒
monitoring 8 track sections
(current sensing from 0,001[1mA] up to 3 Ampere)
⇒
suitable for the feedback modules
RM-88-N-O / RM-DEC-88-O and Roco 10787
⇒
no separate power supply required
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.
CE Part-No.:
40 43 97
Introduction:
You
have
purchased
the
8-fold
track
occupancy
detector
GBM-8
for your model railway layout. The
GBM-8
is a high quality
product that is supplied within the
Digital-Professional-Series
of
L
ittfinski
D
aten
T
echnik (
LDT
).
We wish you having a good time using this product.
The track occupancy detector
GBM-8
of the
Digital-
Professional-Series
can be easily operated on your digital model
railway.
The
GBM-8
is suitable for the direct connection to the feedback
modules
RM-88-N-O / RM-DEC-88-O
and
Roco 10787
.
General:
Tools required for the assembly
Please assure that the following tools are available:
•
a small side cutter
•
a mini soldering iron with a small tip
•
solder tin (if possible 0.5mm diameter)
Safety Instructions
•
All electrical and electronic components included in this kit
shall be used on low voltage only by using a tested and
approved voltage transducer (transformer). All components
are sensitive to heat. During soldering the heat shall be applied
for a very short period only.
•
The soldering iron develops a heat up to 400°C. Please keep
continual attention to this tool. Keep sufficient distance to
combustible material. Use a heat resistant pad for this work.
•
This kit consist small parts which can possibly be swallowed
from children. Children (especially under 3 years) shall not
participate on the assembly without supervision.
Set-Up:
For the board-assembly please follow exact the sequence of the
below
assembly list
. Cross each line off as
done
after
completing the insertion and the soldering of the respective part.
For the
diodes
please keep special attention to the correct
polarity (marked line for the cathode).
Resistor-networks
are marked on one end with a printed circle
or a square. Assemble this component that way that the marking
corresponds with the marking between the first and second bore
respectively with the marking “1” on the pc-board.
The
330Ohm networks (RN1 and RN2)
contain the
label “331”
for identification of the resistance value. The
10kOhm networks
(RN3 and RN4)
contain the
label “103”
.
Please attend to the flat side of the
transistors.
Please put the
2-pole
clamps
and the
3-pole clamps
together
to a block with 10 respectively 12 connections before assembling
the clamps to the board.
Assembly List:
Pos.
Qty. Component
Remark
Ref.
Done
1
1
Printed Circuit Board
2
10 Diode 1N4148
Attend to the polarity!
D17...26
3
8
Resistor 1kOhm
brown-black-black-brown
R1...R8
4
8
Resistor 220kOhm
red-red-black-orange
R9...R16
5
2
Network 4*330Ohm
Attend to the polarity! (331)
RN1, 2
6
2
Network 4*10kOhm
Attend to the polarity! (103)
RN3, 4
7
8
Capacitor 22pF
C1...C8
8
16 Diode BY251
Attend to the polarity!
D1...D16
9
8
Transistor BC 547
T1...T8
10
6
Clamp 3-poles
Build a block before assembly
KL1...6
11
2
Clamp 2-poles
Build a block before assembly
KL7, 8
12
Final Control
Made in Europe by
L
ittfinski
D
aten
T
echnik (
LDT
)
Bühler electronic GmbH
Ulmenstraße 43
15370 Fredersdorf / Germany
Phone: +49 (0) 33439 / 867-0
Internet: www.
ldt-infocenter
.com
Subject to technical changes and errors.
08/2019 by LDT
Roco is a registered trademark.
