====== Marklin 37994 ====== {{:marklin_de.jpg?400|}} 37994 - Steam locomotive with a tender Union Pacific Railroad (UP) class 4000 "Big Boy" heavy freight locomotive. Version with the road number 4019 as equipped with smoke deflectors. In the winter of 1944/45 this unit had smoke deflectors installed on it as an experiment. Length 465mm ==== Road Number ==== 4019 ==== Spare Parts ==== Contact shoe - E138079 Rubber tyres (4) - 7153 High efficiency motor - Light bulb - Smoke generator - 7226 x 2 ==== Catalogues ==== Marklin "New Items" brochure 2012 ==== Digital Conversion ==== High efficiency motor - Decoder - ESU Loksound 5 ==== Decoder CV Values ==== Set by us. ^CV^Value^Designation^Notes^ |CV 1|50|Address| | |CV 17|223|Long Address 1| | |CV 18|58|Long Address 2| | |CV 29|54|Configuration Register|128 speed steps, enable analogue, Speed curve CV 67 - 94, Long Address| |CV 50|1|Analogue mode|AC analogue enabled| |CV 113|255|Power Fail Bypass| | |CV 263|128|Special function CV1 Front Light|Set for LED| |CV 271|128|Special function CV1 Rear Light|Set for LED| |CV 275|1|Mode Select Aux 1|Set for Relay for smoke generator| |CV 278|31|Brightness Aux 1|Set for Relay| ESU Lokpilot recommendations ^CV^Value^Designation^Notes^ |CV 2|3|Start Voltage| | |CV 9|20|Motor PWM Frequency (x1000Hz)| | |CV 51|20|<> Cutoff| | |CV 52|20|BEMF <>| | |CV 53|110|Control Reference Voltage| | |CV 54|25|Load Control Parameter <>| | |CV 55|200|Load Control Parameter <>| | |CV 56|255|BEMF Influence at VMin| | |CV 116|100|Slow speed BEMF Sampling period|x0.1 millisecond| |CV 117|150|Full speed BEMF Sampling period|x0.1 millisecond| |CV 118|20|Slow speed BEMF Measurement gap length VMin|x0.1 millisecond| |CV 119|25|Full speed BEMF Measurement gap length Vmax|x0.1 millisecond| ==== Serial Number ==== ==== DCC-EX Roster ==== ROSTER(7994 , "Marklin 37994", "Light/Smoke/Cab Light/Shunting/Momentum/ / / /Sound/ / /")