DOEHLER & HAASS Doehler & Haass SD18A
Doehler & Haass SD18A

Doehler & Haass SD18A

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Product information

Product features and functions

For optional operation with conventional direct current driving device, digital systems according to SelecTRIX 1 and 2 or according to the NMRA standard (DCC)

The switchover between analogue and digital operation takes place automatically

The last programmed system is used in digital mode (it is not switched over automatically!)
SelecTRIX 1 31 speed steps, 100 addresses
SelecTRIX 2 127 speed steps, 10,000 addresses, 16 additional functions
DCC Short addresses (1-127), long addresses (0001-9999), with 14, 28, 126 speed steps

The latest generation of load control, resulting in particularly smooth control behavior
Different control variants for optimal adaptation to the engine
Internal 127 speed steps
Adjustable motor frequency (low frequency, 16 kHz, 32 kHz)
Block section operation with simple diodes in digital operation
Light and function outputs can be dimmed and activated analogously

Motor, light and track connections can be exchanged electronically
All function outputs freely programmable
Temperature protection
Original vehicle-specific steam, diesel and electric locomotive sound projects (no "standard sounds")
Realistic steam driving noise with wheel-synchronized and overlapping exhaust strokes, pitch-dependent pitch and independent boiling noise
Realistic diesel-hydraulic driving noise with pitch-dependent pitch, variable idling speed and independent acceleration levels, turbocharger and dynamic brake

Realistic diesel-mechanical driving noise with multiple gears, idling, multiple driving and acceleration levels and possible switching noise
Realistic electric driving noise with traction motor and traction motor fan as well as upgrade noises (pantograph, main switch etc.), rear derailleur noise and dynamic brake
Bell, horn, pipe, doors close etc. (depending on the sound project) can be triggered separately at any time
All sound sequences can be freely configured ("function mapping") and triggered at random

Speaker connection protected against short circuit and overload
Low heat development through the use of the latest technologies
Reset function for DCC and SX2
Update capability of the decoder
Loadability of sound projects via SUSI interface using a programmer

The update (the firmware download from the Internet is free of charge) is possible when the decoder is installed on the track (no opening of the vehicle necessary) and is only carried out via the programmer. If no suitable hardware is available, the company Doehler & Haass will provide a programmer on request.

The vehicle sound decoder SD18A supports braking with asymmetrical digital voltage (four diodes in series and one anti-parallel diode, Lenz ABC), slow travel (with suitable brake modules) and bidirectional communication (locomotive address feedback in DCC mode, RailCom®).

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