Bachmann Sound Value GE Dash 8-40CW - HO
Information on this wiki page provides particular details about this model not found in our basic guide.
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Contents
Overview
Bachmann’s new DCC sound-equipped Dash 8-40CW uses original design documentation and authentic sound files recorded from the prototype. This model includes a TCS WOWSound® decoder with factory-preset configuration, and on-board Keep-Alive® device for uninterrupted operation, even over dirty track. The WOWSound® diesel-electric locomotive sound package includes sounds for horn, bell, prime mover, air compressor, dynamic brakes, cooling fan, coupler close/release, brake release and application, and many more!
Loaded with prototypical features, the GE Dash 8-40CW in HO-scale from Bachmann Trains brings all the sights and sounds of GE's iconic rumble diesel-electric locomotive to your layout.
Specific Features
Features include:
- DCC sound-equipped for sound, speed, direction, and lighting control
- Dual-mode NMRA-compliant decoder operates sound, motor, and lights on DCC or DC power.
- TCS high-quality 16-bit audio
- Authentic and prototypical sounds
- 5 hand-picked prototypical horn options and 6 bell options
- On-board Keep-Alive® device that keeps your engine running during power interruptions due to dirty track or loss of electrical contact
- Directional headlights with "Rule 17" dimming operation enabled by default
- Directional steady/flashing ditch lights
- TCS' industry-leading "quiet drive" Back EMF motor control for superior slow-speed performance and load compensation
- User-loadable speed table options (3-point, 28-point, and 126-point curves)
- Three select-able Throttle Modes
- Two configurable Momentum Modes
- TCS' exclusive Function Pagination System
- Die-cast frame
Specific Features
The Bachmann Sound Value GE Dash 8-40CW - HO is at its heart a WOWDiesel decoder but has had some customization to make it specific to the locomotive. The information below details where CV’s and operation differ from the standard Diesel decoder.
DC mode operation
When operating in DC mode, the locomotive will sit still and silent until a sufficient track voltage is present. Once the minimum voltage (approximately 8 volts) is met, the locomotive will ignite the prime mover and the lights will come on. An additional increase in voltage will cause the locomotive to begin to move. A directional horn blast will sound, and the bell will activate automatically. Increasing the voltage further will shut off the automatic bell. Users may trigger a grade crossing horn quill sound by quickly adjusting the track voltage up and back down quickly. The directional horn blasts, quill, and automatic DC mode bell are enabled by default. If you would like to change these settings, as well as other behavior of your locomotive on DC power, please read more in our section on DC Mode Operation and Configuration for WOWSound Version 5.
Note: This WOWSound® product does not support TCS' Audio Assist® auditory feedback program.
Button Mappings
The values outlined below in the button mapping, sound list, and CV values are the defaults assigned to this particular decoder from the factory.
For information on how to program your locomotive using the values provided in the charts below, please see our List of Diesel Version 5 Standard CV's, and/or List of Diesel Version 5 Indexed CV's.
TCS Function Pagination System
The Bachmann Sound Value GE Dash 8-40CW - HO supports TCS' new "function pagination" system. This makes it easy to access all 28 functions and all lighting effects on throttles with limited function access by adding an offset to the pressed function button (offset of +10 for function page 2; offset of +20 for function page 3). For example, to access function 15:
- Press function 8 twice to rotate through the function pages until the decoder announces "function page [two]"
- Press button 5 on your throttle/controller
- The decoder will activate function 5 + 10 (page 2 offset) = 15
Note: the decoder supports accessing all decoder functions above 9 regardless of the currently selected function page by pressing the corresponding buttons on your throttle.
If you have a command station which supports all 28 function buttons and would like to disable function pagination, this may be done by re-configuring CV 177
| Button Mappings | ||||
|---|---|---|---|---|
| Function Button | Sound Action | Light Action | Dual Enabled | Page and Button |
| 0 | None | Headlights & Number Boards (F0F/R,F1,F2) | Yes | Page 1 Button 0 |
| 1 | Bell | None | No | Page 1 Button 1 |
| 2 | Horn - Long Blast | Blink Ditch Lights | Yes | Page 1 Button 2 |
| 3 | Horn - Short Blast | Ditch Lights On/Off (F3 & F4) | No | Page 1 Button 3 |
| 4 | Horn - Grade X Quill | None | No | Page 1 Button 4 |
| 5 | Train Brake | None | No | Page 1 Button 5 |
| 6 | Startup/Shutdown | None | No | Page 1 Button 6 |
| 7 | None | Dim Headlights | Yes | Page 1 Button 7 |
| 8 | 1x Press Mute/Unmute 2x Press rotate light/sound mode or page 4x Press Audio Assist™ |
None | Yes | Page 1 Button 8 |
| 9 | None | None | No | Page 1 Button 9 |
| 10 | Manual Notch Up | None | No | Page 2 Button 0 |
| 11 | Manual Notch Down | None | No | Page 2 Button 1 |
| 12 | Coupler Crash | None | No | Page 2 Button 2 |
| 13 | Coupler Release | None | No | Page 2 Button 3 |
| 14 | Brake Release | None | No | Page 2 Button 4 |
| 15 | Dynamic Brakes | None | No | Page 2 Button 5 |
| 16 | Momentum | None | No | Page 2 Button 6 |
| 17 | Crew Alert | None | No | Page 2 Button 7 |
| 18 | 1x Press Mute/Unmute 2x Press rotate light/sound mode or page 4x Press Audio Assist™ |
None | No | Page 2 Button 8 |
| 19 | None | None | No | Page 2 Button 9 |
| 20 | Air Spit | None | No | Page 3 Button 0 |
| 21 | Forward Quill | None | No | Page 3 Button 1 |
| 22 | Reverse Quill | None | No | Page 3 Button 2 |
| 23 | Stop Quill | None | No | Page 3 Button 3 |
| 24 | Rotate Bell/Horn | None | No | Page 3 Button 4 |
| 25 | Windshield Wipers | None | No | Page 3 Button 5 |
| 26 | Exhaust Fan | None | No | Page 3 Button 6 |
| 27 | None | None | No | Page 3 Button 7 |
| 28 | 1x Press Mute/Unmute 2x Press rotate light/sound mode or page 4x Press Audio Assist™ |
None | No | Page 3 Button 8 |
| Random Sound Mapping | |
|---|---|
| Random Sound Generator |
Sound Played |
| 1 | Air Compressor |
| 2 | Air Spitter 1 |
| 3 | Air spitter 2 |
| 4 | None |
Sound list
| Sound Type | Sound Number | High Byte | Low Byte | Sounds Available |
|---|---|---|---|---|
| Air Compressor | 0 | 0 | 0 | GE Air Compressor Type 1 |
| 1 | 0 | 1 | GE Air Compressor Type 2 | |
| Air Spitter | 2 | 0 | 2 | Air Spitter #1 |
| 3 | 0 | 3 | Air Spitter #2 | |
| 4 | 0 | 4 | Air Spitter #3 | |
| Bell | 5 | 0 | 5 | Bell * |
| Brake Release | 11 | 0 | 11 | Brake Release |
| Brake Squeal | 12 | 0 | 12 | Brake Squeal * |
| Coupler Clank | 42 | 0 | 42 | Coupler Clank Closed |
| 43 | 0 | 43 | Coupler Clank Open | |
| Crew Alert | 44 | 0 | 44 | Crew Alert Feature |
| Dynamic Brake | 45 | 0 | 45 | Dynamic Brakes |
| 46 | 0 | 46 | Dynamic Brakes Medium | |
| 47 | 0 | 47 | Dynamic Brakes High | |
| Exhaust Fan | 48 | 0 | 48 | Exhaust Fan |
| Horn Forward Quill | 49 | 0 | 49 | Horn Forward Quill * |
| Horn Long | 54 | 0 | 54 | Horn Long * |
| Horn Quill | 59 | 0 | 59 | Horn Quill * |
| Horn Short | 64 | 0 | 64 | Horn Short * |
| Manual Notch Down | 69 | 0 | 69 | Notch Prime Mover Down |
| Manual Notch Up | 70 | 0 | 70 | Notch Prime Mover Up |
| Momentum | 71 | 0 | 71 | Momentum Feature |
| Mute | 73 | 0 | 73 | Mute All Sounds |
| Prime Mover Ignition | 150 | 0 | 150 | Prime Mover Ignition * |
| Horn Reverse Quill | 152 | 0 | 152 | Horn Reverse Quill * |
| Rotate Feature | 157 | 0 | 157 | Rotate Feature |
| Horn Stop Quill | 162 | 0 | 162 | Horn Stop Quill * |
| Windshield Wipers | 167 | 0 | 167 | Windshield Wiper |
*For Prime Mover, Bell, and Horn custom reprogramming use the sound numbers below in the corresponding CV from the table header
Prime Mover
| CV 123 Value | Active Prime Mover |
|---|---|
| 0 (default) | GE 7FDL16 |
Bell
| CV 122 Value | Active Bell |
|---|---|
| 0 (default) | ALCo S-4 Bell |
| 1 | EMD SW Bell |
| 2 | E-Bell |
| 3 | GE U23B Bell #1 |
| 4 | GP38-3 Bell |
| 5 | GE U23B Bell #2 |
Horn
| CV 120 Value | Active Horn |
|---|---|
| 0 (default) | Nathan K3H |
| 1 | Nathan K5H |
| 2 | Nathan K5LA |
| 3 | Nathan M3 Tilt |
| 4 | Nathan M5 |
CV Addendum (Standard CV's)
The Bachmann Sound Value GE Dash 8-40CW - HO follows the motor and lighting CV's as described in in TCS' Complete Standard CV's List For WOWSound Version 5. Listed below are the CV's that have been modified for the Bachmann Sound Value GE Dash 8-40CW - HO decoder.
| CV | Value | Description |
|---|---|---|
| CV 3 | 5 | Acceleration Rate |
| CV 4 | 5 | Deceleration Rate |
| CV 35 | 0 | F1 Light Remapping |
| CV 36 | 0 | F2 Light Remapping |
| CV 37 | 3 | F3 Light Remapping |
| CV 38 | 3 | F4 Light Remapping |
| CV 39 | 255 | F5 Light Remapping |
| CV 40 | 255 | F6 Light Remapping |
| CV 41 | 255 | F7 Light Remapping |
| CV 42 | 255 | F8 Light Remapping |
| CV 43 | 255 | F9 Light Remapping |
| CV 44 | 255 | F10 Light Remapping |
| CV 49 | 40 | F0F Lighting Effect |
| CV 50 | 40 | F0R Lighting Effect |
| CV 53 | 10 | F3 Lighting Effect |
| CV 54 | 11 | F4 Lighting Effect |
| CV 61 | 33 | Configuration CV #2 |
| CV 109 | 1 | TCS Extended ID (High Byte) |
| CV 110 | 0 | TCS Extended ID (Mid Byte) |
| CV 111 | 1 | TCS Extended ID (Low Byte) |
| CV 115 | 0 | Motor Delay Reset Time |
| CV 120 | 0 | Horn Set Selecton |
| CV 122 | 2 | Bell Selection |
| CV 123 | 0 | Prime Mover Selection |
| CV 126 | 7 | Rule 17 Dimming Button Remapping |
| CV 139 | 1 | Random Sound Overall Timer |
| CV 141 | 5 | Random Sound 1 Frequency |
| CV 142 | 20 | Random Sound 2 Frequency |
| CV 143 | 255 | Random Sound 3 Frequency |
| CV 177 | 176 | User Options #2 |
| CV 179 | 7 | Automatic Sound Options #2 |
| CV 238 | 133 | Dual Enabled functions register 1 (F0-F7) |
| CV 241 | 8 | Dual Enabled functions register 4 (F24-F28) |
| CV 248 | 1 | Sound Set Version identifier |
| CV 249 | 190 | Decoder Hardware Model Identifier |
CV Addendum (Indexed CV's)
The Bachmann Sound Value GE Dash 8-40CW - HO follows the motor and lighting CV's as described in TCS' List of Indexed CV's for WOWSound Version 5. Listed below are the CV's that have been modified for the Bachmann Sound Value GE Dash 8-40CW - HO decoder.
| CV31 | CV32 | CV | Value | Description |
|---|---|---|---|---|
| 16 | 0 | 260 | 90 | DC Mode Bell Cutout Voltage - Regulated |
| 16 | 0 | 262 | 9 | DC Quill Voltage - Regulated |
| 16 | 0 | 264 | 85 | DC Mode Motor Start Voltage - Regulated |
| 16 | 0 | 266 | 13 | DC Mode Motor Hysteresis - Regulated |
| 16 | 0 | 268 | 140 | DC Mode Max ADC Value - Regulated |
| 16 | 0 | 274 | 90 | DC Mode Bell Cutout Voltage - Unregulated |
| 16 | 0 | 276 | 9 | DC Quill Voltage - Unregulated |
| 16 | 0 | 278 | 85 | DC Mode Motor Start Voltage - Unregulated |
| 16 | 0 | 280 | 15 | DC Mode Motor Hysteresis - Unregulated |
| 16 | 0 | 282 | 160 | DC Mode Max ADC Value - Regulated |
| 16 | 4 | 260 | 5 | Sound Mapping - F1 |
| 16 | 4 | 262 | 54 | Sound Mapping - F2 |
| 16 | 4 | 264 | 64 | Sound Mapping - F3 |
| 16 | 4 | 266 | 59 | Sound Mapping - F4 |
| 16 | 4 | 268 | 12 | Sound Mapping - F5 |
| 16 | 4 | 270 | 150 | Sound Mapping - F6 |
| 16 | 4 | 272 | 65535 | Sound Mapping - F7 |
| 16 | 4 | 274 | 73 | Sound Mapping - F8 |
| 16 | 4 | 276 | 65535 | Sound Mapping - F9 |
| 16 | 4 | 278 | 70 | Sound Mapping - F10 |
| 16 | 4 | 280 | 69 | Sound Mapping - F11 |
| 16 | 4 | 282 | 42 | Sound Mapping - F12 |
| 16 | 4 | 284 | 43 | Sound Mapping - F13 |
| 16 | 4 | 286 | 11 | Sound Mapping - F14 |
| 16 | 4 | 288 | 45 | Sound Mapping - F15 |
| 16 | 4 | 290 | 71 | Sound Mapping - F16 |
| 16 | 4 | 292 | 44 | Sound Mapping - F17 |
| 16 | 4 | 294 | 74 | Sound Mapping - F18 |
| 16 | 4 | 298 | 3 | Sound Mapping - F20 |
| 16 | 4 | 300 | 49 | Sound Mapping - F21 |
| 16 | 4 | 302 | 152 | Sound Mapping - F22 |
| 16 | 4 | 304 | 162 | Sound Mapping - F23 |
| 16 | 4 | 306 | 157 | Sound Mapping - F24 |
| 16 | 4 | 308 | 167 | Sound Mapping - F25 |
| 16 | 4 | 310 | 48 | Sound Mapping - F26 |
| 16 | 4 | 314 | 75 | Sound Mapping - F28 |
| 16 | 4 | 316 | 0 | Sound Mapping - R1 |
| 16 | 4 | 318 | 2 | Sound Mapping - R2 |
| 16 | 4 | 320 | 4 | Sound Mapping - R3 |
Demonstration
Coming Soon!
Decoder Service and Repair
For service/repair, contact the Bachmann Service Department by visiting www.bachmanntrains.com/home-usa/service.php, calling 1-800-356-3910 (toll-free within the U.S. and Canada), or emailing service@bachmanntrains.com. Bachmann’s Service Department is available Monday thru Friday, 8:30 AM to 4:30 PM ET.
You can also send your locomotive to: Bachmann Trains Service Department 1400 East Erie Avenue Philadelphia, PA 19124
Please include a detailed description of your concern and complete contact information. For some service issues regarding DCC sound decoders, the Bachmann Service Department may forward your locomotive to TCS for resolution.
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"DCC Sound Value On Board" is a registered Trademark of Bachmann Industries Inc. and is used with permission by Train Control Systems Inc. (TCS)
