Tran GE70 Manual de usuario

User Manual

Sound decoder GE70

Suitable for N – I scale

21x14x5mm

0.85 x 0.55 x 0.2 inch

(L x W x H)

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INHALT

1. Overview.....................................................................................3

2. Technical specifications..............................................................4

2.1. Connection diagram....................................................................4

3. Safety instructions ......................................................................5

4. Connections................................................................................6

4.1. Connection diagram for steam loco............................................6

5. Programming and taking into use...............................................7

5.1. Basic functionality.......................................................................7

5.2. “Hard reset“.................................................................................8

5.3. CV29 remarks.............................................................................8

5.4. Support for Roco Lokmaus.........................................................9

6. Configuration Variables description (CV’s)...............................10

7. Sound file structure (File list) ....................................................15

8. Calculation of the CV values.....................................................18

8.1. Transferring binary values into decimal....................................18

8.2. Windows calculator...................................................................19

Pictures

Picture 1 Connection diagram..................................................................... 4

Picture 2 Connection standard speaker (50 Ohm)...................................... 6

Picture 3 Connection of a low impedance speaker (8 Ohm) ...................... 6

Picture 4 Windows calculator binary......................................................... 19

Picture 5 Windows calculator decimal. ..................................................... 19

Tables

Table 1 Technical specifications................................................................. 4

Table 2 CV Table ...................................................................................... 14

Table 3 File list.......................................................................................... 17

Table 4 Calculation Table ......................................................................... 18

Table 5 Calculation example..................................................................... 18

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1. Overview

The GE70 sound decoder is suitable for all digital model railroad systems

using the DCC standard.

It offers 3 simultaneous (3 channels) playable sound data’s that can be

freely linked to one of the function keys. Full function mapping conforming

to NMRA standards is supported. F1 is reserved for sound on/off, but can

also be remapped.

Depending on the application the same decoder can be loaded with

diesel, steam or E-loco sounds. With the SoundProg it is possible to load

sounds in built-in situation (decoder does not need to be removed from the

model). There is no limitation on the number of re-loads. The number of

exhausts per wheel revolution when loaded with steam sounds can be set

anytime with CV49.

CV49 Bit 0 = 1 reed switch for impulses is activated. CV51 is then

the number of impulses per steam burst. CV51 = 10 10 revolutions per

steam burst.

Using the file list a sound structure is built. In the file list a sound structure

is built by adding sound by groups. It is mandatory to use the order of the

sounds, the bold marked items represent a sound group (also called Slot).

It is however not necessary to fill all possible entries. Total size of all

sounds together is limited to 2 MBit (Extended explanation to be found in

the user manual if the SoundProg).

The decoder supports full NMRA addressing, 14/28 and 128 speed

steps for speed depending sounds. For steam locomotives the possibility

exists to synchronise the sounds with the wheel revolutions (Reed switch).

Frequency of the sounds is speed dependant and can be changed by

means of setting CV53 and CV54

The GE70 is fully NMRA compatible and can therefore be used in alle

digital systems who use the NMRA DCC Data format, like Digitrax, Lenz,

LGB, Uhlenbrock, Zimo, Roco ‘digital is cool’, etc.

Standard GE 70: 1W Nominal speaker power. Synchronisation con-

nections for Reed or Hall switch. Type depending equipped with 4 (E-loco,

diesel) or 6 (steam loco) flexible wires.

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2. Technical specifications

An internal bridge rectifier supplies all outputs of the decoders. The to-

tal load is limited to 0.8A.

Track voltage .............................................................................. 12-24V

Nominal power .................................................................................. 1W

Operating temperature......................................................... -10 to 90°C

Dimensions ............(L x W x H) 0.85 x 0.55 x 0.2 inch / 21 x 14 x 5 mm

Wiring length ................................................................6 inch / 150 mm

Table 1 Technical specifications

2.1. Connection diagram

Picture 1 Connection diagram

The GE70 has no shrink tube off-factory. High flexible wire is used on

all outputs. The audio amplifier has 1W nominal power. The connected

speaker must have minimum impedance of 50 Ohm. Low impedance

speaker (i.e. 8Ohm speakers) may not be directly connected. If an 8Ohm

speaker is used: solder a resistance of about 40Ohm in one of the speaker

leads (see picture 3).

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3. Safety instructions

The decoder outputs are not protected against short circuits. As well

internal as external (i.e. short circuit on the speaker output. Wron connec-

tions as switching the connections of the track and speaker outputs or

connection of any other incorrect power supply will damage the decoder

making it potentially defect.

Usually decoders are not damaged by over current but due to voltage

spikes caused by the motor or other inductive parts. Spikes generated by

the motor can be in access of several hundreds of Volts. As a counter-

measure circuits have been built in the decoder to cope with these spikes.

Please note however that these circuits have their limitation with respect to

response time and voltage limits. Therefore do not set a to high voltage on

your central unit or booster then necessary (max. nominal voltage 12-24V).

For H0 and N scale one should set about 16V. A secondary reason to do

so is to protect the light bulbs in your models, which will last longer when

supplied with a lower voltage.

Due to small parts not suitable for children under 3 years of age.

No liability and responsibility is accepted on errors, changes of techni-

cal specs and materials. No liability is taken on all damage or resulting

damage thereof due to improper handling and use, defective appliances,

any changes performed by user interference, overload or overheat result-

ing from use outside of specifications. Use of the decoder with appliances

not meant for model railroads is strictly excluded from any liability and war-

ranty.

Mount the decoder with double-sided tape. Under no circumstance

there should be contact between any part of the decoder and loco housing

or any other metal part. Isolate all metal parts in the surrounding area of

the decoder with plastic tape to avoid short circuit. Never wrap the decoder

in shrink tube or isolation tape. This will reduce air circulation and will

damage the decoder. When touching the decoder under operation hard-

and/or software might be damaged.

Warranty will be void when used in an improper manner or use outside

of specifications.

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4. Connections

All connections must be potential free meaning all must be isolated

against wheel pickups and metal housing. All condensators and / or coils

must be removed from the electrical motor connections before you con-

nect the decoder. No form of filters whatsoever should be connected to the

motor.

4.1. Connection diagram for steam loco

Decoder

braun

violett

grün

schwarz

rot

Reedschalter

Schiene links

Schiene rechts

Picture 2 Connection of a standard speaker (50Ohm)

Decoder

braun

violett

grün

schwarz

rot

Reedschalter

Schiene links

Schiene rechts

40E

Picture 3 Connection of a low impedance speaker (8Ohm)

In case of a diesel or E-Loco decoder, the brown wires are not

mounted. Also can steam loco decoders be used without synchronisation.

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5. Programming and taking into use

All of the sound decoders have address 3 set by default out of the box

(you can use or test the decoder immediately using this address).

It is recommended you test the decoder at its final address and with fi-

nal settings before you start using it on your layout.

It is recommended that the speaker is not connected during program-

ming. During reading and writing an acknowledgement pulse is fed back to

your central unit or other programming device. This causes a short current

feedback, which will be recognised by the central unit and will acknowl-

edge a properly handled operation.

In case this current feedback is too high or low, the central unit will not

acknowledge the read or write operation as proper (although the value as

such can be properly set in the decoder!). Should this happen disconnect

the speaker.

For the reading and writing procedure, please check the manual of your

digital system.

5.1. Basic functionality

The sound decoder is set and addressed at the same address as the

loco decoder. It reads therefore the same commands that are sent by the

central unit and consequently emits the sound belonging to the requested

mode of operation.

Programming is done separately from programming the loco decoder.

Some of the CV’s have the same functionality as those from the loco de-

coder and will, when used in the same loco, have the same setting. I.e.

address and de-/acceleration curves. Most of the other CV’s have a totally

different function in the GE70 if compared to a loco decoder. Therefore

they have to be programmed separately avoiding mix up of settings in both

of the decoders.

After parameter setting of the GE70, by means of writing value 88 in

CV99 further (accidental) writing can be blocked. You can then write the

requested values in the loco decoder without having to disconnect or dis-

assemble the GE70.

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Besides the standard available CV’s according to NMRA-Norm there

are quite a few specific settings available in the GE70. The allowed min

and max values differ from CV to CV. Please make sure you read the CV

explanation before attempting the program this decoder.

All CV’s of the GE70 are explained in chapter 6.

Programming in built-in situation: To make it possible to program

the decoder without reprogramming the loco decoder at the same time, the

GE70 offers the possibility to program them separately when built-in and

connected. First the to be programmed CV number is written in CV7. Then

write the required value for this CV in CV8. I.e. if you want to write the

value of 32 in CV49: First set value 49 in CV7. Then write value 32 in CV8.

By means of this programming method it is prevented that any value in the

loco decoder is changed because CV 7 and 8 can, in the loco decoder, not

be written but are read-only.

5.2. “Hard reset“

If the address in CV1 is set to “0“ a hard reset will be executed with

which all Configuration Variables will be set to their default values. The free

speed table in CV67-94 is also reset. The decoder can be regarded after a

hard reset as a brand new one straight from the box. During the hard reset

sequence the decoder emits a high frequency beep (off course with

speaker connected!) at the start of the reset and a low frequency beep at

the end of the sequence.

5.3. CV29 remarks

The GE70 uses in CV29 more bits for the set up of decoder character-

istics if compared to other manufacturers. Bits 3, 6 and 7 are mostly not

used in those cases. Please keep this in mind when you use CV values

from other decoders.

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5.4. Support for Roco Lokmaus

The Roco LokmausSystem supports a value range of 2 digits (0-99).

This makes writing in CV’s of values > 99 not directly possible. The GE70

sound decoder offers a workaround for this.

When CV99 contains a value of 1 then in all afterwards written CV’s the

value of 100 will be added. If CV99 = 2 then a value of 200 will be added.

P.S. for to be written values in the range of 0-99 do not forget to write a

value of 0 in CV99!

Users of digital systems supporting more then 2 digits can directly program

all CV’s.

This programming method works on all CV’s except on the decoder ad-

dress. A value above 99 would make the decoder inaccessible for Lok-

maus users.

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6. Configuration Variables description (CV’s)

CV Description Default Range

1Decoder address: this is the number by which

the loco is addressed by the digital system. Valid

when CV29 Bit 5 is set to 0. 3 1 - 127

2Start voltage: not used 0 0

3Acceleration curve: defines the curve at which

the loco goes from idle to full speed. 1 0 - 255

4Deceleration curve: defines the curve at which

the loco goes from full speed to idle. 1 0 - 255

5Maximum speed: not used 0 0

6Middle speed: combined with CV2 and 5 a 3-

point speed curve can be defined. If CV6 = 0 -->

linear curve. Valid only when CV 29 Bit 4 = 0.

0 0 - 255

7Version: read-only. Fixed factory stored firmware

version. Also check: „Programming in built-in

situation“ - variabel

8Manufacturer ID: read-only. 117 = CT Elektronik

Also check: „Programming in built-in situation“ - 117

Bit mask for endless manual sounds:

Only works when CV49 Bit 5 is set.

Bit 0 for sound 1, Bit 1 for sound 2, …etc….Bit 6

for sound 7

0 255

Extended address (long address): only active

when CV 29 Bit 5 is set to 1. 0128-

10240

19 Consists address: offers second address to

control multiple loco “behind” one common ad-

dress.

0 1-127

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