User manual
Picture 1: Incandescent lamps can be connected directly. For
Light Emitting Diodes it is absolutely required to use a serial
resistor (about 4,7kOhm, related to the input voltage at KL6).
Picture 2: Each of the 40 light outputs can be loaded by up to
max. 0,5 Ampere. Each input of the three positive clamps (KL7)
can be loaded with max. 1 Ampere.
Light Interface (LPT)
Rev. 1.0
Littfinski DatenTechnik (LDT)
BU1
IC2
IC3
IC4
BU2
IC1
C2
C1
Printer
Port
LPT
Leuchtdiode
light-emitting diode
Vorwiderstand
series resistor
Modellbahn-
lämpchen
model incandescent
lamp
braun
brown
gelb
yellow
Vom Modellbahntrafo
From transformer
white
weiss
white
weiss
KL4 KL3 KL2 KL1
KL7
BU1
ST1
4
5
6
7
8
26
27
28
29
30
31
32
25
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
17
1
2
3
GBS-Display / Light-Display
Rev. 1.8
Littfinski DatenTechnik (LDT)
KL5
braun
gelb
10...18V~
12...24V=
KL6
BU2
39
38
37
36
35
34
33
40
BU3
OUT
IN
braun
brown
gelb
yellow
Vom Modellbahntrafo
From transformer
max. 1 Ampere
max. 0,5 Ampere
Light Interface (LPT)
Rev. 1.0
Littfinski DatenTechnik (LDT)
BU1
IC2
IC3
IC4
BU2
IC1
C2
C1
Printer
Port
LPT
white
weiss
white
weiss
KL4 KL3 KL2 KL1
KL7
BU1
ST1
4
5
6
7
8
26
27
28
29
30
31
32
25
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
17
1
2
3
GBS-Display / Light-Display
Rev. 1.8
Littfinski DatenTechnik (LDT)
KL5
braun
gelb
10...18V~
12...24V=
KL6
BU2
39
38
37
36
35
34
33
40
BU3
OUT
IN
Picture 3: If you illuminate your layout mainly with Light Emitting Diodes one 52 VA transformer can supply more then one Light-
Display-Module. In this case attend always to the same polarity (marked brown and yellow) at the clamp KL6 of the connected Light-
Display-Modules.
PC
LAN-Schnittstelle
(Interface)
braun
brown
gelb
yellow
Vom Modellbahntrafo
From transformer
Trxcom
Littfinski DatenTechnik (LDT)
DMX
KL5
BU2
PC/
LAN
Light-LAN (Ethernet Interface)
Rev. 1.0
Taster
BU1
ST1
KL1 KL2 KL3 KL4
+5V
GND
1
2
3
4
5
6
7
8
IC8
C4
C1
C2
L1
C3
Q1
CR1
C20
C19
C18
C17
C14
C12
C13C16
C15
RN1
RN2
IC3
IC1
IC2
C10
C21
C11
IC6
IC5
IC7
D1
C6
C5
C8
C9
white
weiss
white
weiss
KL4 KL3 KL2
KL1
KL7
BU1
ST1
4
5
6
7
8
26
27
28
29
30
31
32
25
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
17
1
2
3
GBS-Display / Light-Display
Rev. 1.8
Littfinski DatenTechnik (LDT)
KL5
braun
gelb
10...18V~
12...24V=
KL6
BU2
39
38
37
36
35
34
33
40
BU3
OUT
IN
white
weiss
white
weiss
KL4 KL3 KL2
KL1
KL7
BU1
ST1
4
5
6
7
8
26
27
28
29
30
31
32
25
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
17
1
2
3
GBS-Display / Light-Display
Rev. 1.8
Littfinski DatenTechnik (LDT)
KL5
braun
gelb
10...18V~
12...24V=
KL6
BU2
39
38
37
36
35
34
33
40
BU3
OUT
IN
Picture 4: If you illuminate your layout with incandescent lamps one 52VA transformer can supply one Light-Display-Module. If
possible please use only transformers from the same manufacturer and attend to the same polarity (marked brown and yellow) at the
clamp KL6 of the connected Light-Display-Modules.
Vom Modellbahntrafo
From transformer
gelb
yellow
braun
brown
braun
brown
gelb
yellow
Vom Modellbahntrafo
From transformer
BU1
Littfinski DatenTechnik (LDT)
Taster / Button
+5V
GND
1
2
3
4
5
6
7
8
IC5
D1
red brown
KL5
K J
KL1 KL2 KL3 KL4
Light-DEC-Service
Rev. 1.0
Littfinski DatenTechnik (LDT)
S1
S2
S4
S3
R1
Light-DEC V1.0
12:15:00 T 300
Rev. 1.0
Light-DEC-Basis
white
weiss
white
weiss
KL4
KL3 KL2 KL1
KL7
BU1
ST1
4
5
6
7
8
26
27
28
29
30
31
32
25
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
17
1
2
3
GBS-Display / Light-Display
Rev. 1.8
Littfinski DatenTechnik (LDT)
KL5
braun
gelb
10...18V~
12...24V=
KL6
BU2
39
38
37
36
35
34
33
40
BU3
OUT
IN
white
weiss
white
weiss
KL4
KL3 KL2 KL1
KL7
BU1
ST1
4
5
6
7
8
26
27
28
29
30
31
32
25
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
17
1
2
3
GBS-Display / Light-Display
Rev. 1.8
Littfinski DatenTechnik (LDT)
KL5
braun
gelb
10...18V~
12...24V=
KL6
BU2
39
38
37
36
35
34
33
40
BU3
OUT
IN
J
braun
brown
K
rot
red
Optional:
Von DCC-Digitalzentrale
oder Booster
From DCC command station
or booster
Colored sample connections can be found on our Web-Site www.ldt-infocenter.com at the section “Sample Connections”.
Table 1:
Input Voltage (KL6) Output Voltage Input Voltage (KL6) Output Voltage
AC-Voltage DC-Voltage DC-Voltage DC-Voltage
10 V AC 12,7 V DC
12 V AC 15,6 V DC 12 V DC 10,6 V DC
15 V AC 19,8 V DC 15 V DC 13,6 V DC
16 V AC 21,2 V DC
18 V AC 24,0 V DC 24 V DC 22,6 V DC
Made in Europe by
Littfinski DatenTechnik (LDT)
Kleiner Ring 9
D-25492 Heist/Germany
Phone: 0049 4122 / 977 381
Fax: 0049 4122 / 977 382
Internet: http://www.ldt-infocenter.com
Subject to technical changes and errors. 06/2016 by LDT