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Doehler-en-Haass H18 Vehicle decoder DH18A Next18 SX1 SX2 & DCC

DH18A 2nd generation - vehicle decoder 1.5 A


- Operating mode SX1, SX2, DCC, MM, DC-analog
- Dimensions [mm] 9.7 * 8.9 * 2.8
- Total load capacity 1.5 A
- Max. Motor current 1.5 A
- Max. Driving voltage 30 V
- LV, LR (dimmable) 150 mA each
- AUX1, AUX2 (dimmable) 300 mA each
- AUX3, AUX4 not amplified
- AUX5, AUX6 unamplified
- with SUSI interface (if AUX3 / AUX4 deactivated)

Product features and functions

- For optional operation with a conventional DC driving device, digital systems according to SelecTRIX 1 and 2 or DCC format
- The switchover between analog and digital operation takes place automatically
- In digital mode, the last programmed system is used (it is not switched 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
- Internally 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
- Shunting
- Motor, light and track connections can be exchanged electronically
- All function outputs freely programmable
- temperature protection
- Reset function for DCC and SX2
- The decoder can be updated
- The update (firmware download from the Internet is free) is possible with the decoder installed on the track (no need to open the vehicle) and is carried out either via the FCC digital center or the programmer. If no corresponding hardware is available, Doehler en Haass will provide a programmer on loan on request.
- The vehicle decoder DH18A 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 operation, RailCom®).