A replacement board format style that is in widespread use for popular diesels like the Atlas type chassis locomotives and many others.

The Quantum Revolution U is a universal wired format for most plug and play installations.

Revolution-U/W

A Quantum Revolution-U without the 8 and 9 pin JST board connectors, but with the I/O wires soldered directly to the board. Costly from a labor perspective but the overall max board height is less than 0.210".

Revolution-A/U

A hybrid combination of the Revolution-A and the Revolution-U. Shorter than the standard -A, but a little longer than the -U. It has the diesel style motor mount tab holes for easy mounting to most popular diesels. The 8 and 9 pin JST detachable wire harnesses are retained but moved outward a little to accommodate the mounting holes.

What Will the Atlas Revolution Fit?

Athearn - Genesis F3/7, Genesis SD70-75 and most of the older loco kits.
Atlas - B40-8, C424/C425, GP7 (pre-2003), GP38, GP40, RS1/RS3, RSD4/5, RS-11,RSD12, SD35, U33C/U36C, C30-7 and more.
Kato - C424, C1425, SD40-2, SD45 and more.
Life-Like - P1K DL109, P1k F7, generally most Walthers Proto 1000 loco’s.
Stewart - Baldwin AS16F3-7, F9 A&B, many F units and others
Intermountain - F Units
Broadway Ltd/PCM: Stealth Models

Revolution-U for the universal format. 
DCC TrainShop $99.95  List $109.95

Size: 1.86"L x 0.66"W x 0.25"H

Revolution-U/W

Size: 1.80"L x 0.66"W x 0.21"H

Revolution-A/U

Size: 2.18"L x 0.66"W x 0.25"H

What’s the Revolution Got That’s New?
Improvements in Quantum Revolution as compared to the original OEM releases by BLI, Atlas, Walthers, Proto 2000, Inter Mountain, Stewart and other sound decoders.

• Advanced Co-Processor technology.

• Low power design that allows mounting of the board anywhere in the locomotive.

• Higher audio output for clear and loud sounds.

• Additional flash memory provides for more sounds.

• Higher voltage operation, 25 volts peak.

• Better motor performance under intermittent power.

• Super smooth low and mid speed performance under RTC.

• Steam versions of the board support a chuff CAM.

Lighting: 

• 6 light outputs, all with 256 intensity levels.

• Support for both LEDs and low voltage, low current incandescent lights, eliminating dropping resistors.

• High voltage bulbs not supported.

New Lights supported: 

• Rear Mars Light.

• Rear Ditch Lights.

• Firebox.

• Light ports are user configurable.

The lights for 2 ports are fixed:

• Front Headlight, Rear Headlight.

• The user can select lights for the remaining 4 ports from this list.

Front Mars Light	Rear Number Boards
Rear Mars Light	Front Marker Lights
Front Left Ditch Light	Rear Marker Lights
Front Right Ditch Light	Front Cab Light
Rear Left Ditch Light	Rear Cab Light
Rear Right Ditch Light	Firebox
Front Number Boards

Complete sound file downloading supports cut & paste or editing of sound records:

• Horn/Whistle

• Alternate Horn/Whistle

• Bell

• Diesel Motor

• Chuff

• Dynamic Brake Fans

• Steam Generator

• Pump

• Cooling Fan/Vents

New Odometer Functions:

• Odometer Reset

• Service Mode Odometer Read-back

• Ops Mode Odometer Readout

• Reported to 0.01 SMPH.

User Calibration of BEMF vs. Scale MPH

User calibration of Chuff rate for low range speed steps virtually eliminates the need for a cam.

New CV56.13 Chuff Interval Trim for fine-tuning chuff rate.  

User can specify default values for:

• CV2 VStart

• CV5 VHigh

• CV56.5 Regulated Throttle Minimum BEMF

• CV56.9 BEMF to MPH Trim

• CV56.18-21 PID parameters. 

User Configurable Squealing Brakes:

• Specify SMPH at which Squealing Brakes are armed.

• Specify SMPH at which Squealing Brakes are triggered.

• Specify whether Squealing Brakes are armed if Air Brakes are applied.

User Configurable Grade Crossing Horn Signal:

• Specify duration of up to four horn blasts and three periods of silence.

Quantum Revolution Specifications

Dimensions: Revolution-A, 0.99” X 2.86”, Revolution-U, 2.13” X 0.69”.

• Maximum Peak Voltage: 25 V

• Steady State Current: 1.3 A

• Stall Current: (1 sec): 2+ A

• Speaker Load: 8/16 ohm or 2, 8 ohm in Parallel

• Audio Amplifier: Advanced D Style Format 2 Watts

Light Outputs: 

• 6 with 256 intensity levels ea.

• Function Current: 100 mA

Downloadable Sound Files: 

• Cut/Paste and Edit Sound Files

DECODER FEATURES
Compatible with the NMRA DCC Standards and RPs.

• Supports 2 and 4 Digit Addressing

• Programmable acceleration, deceleration, starting voltage

• Speed calibration, 1 Scale MPH

• Supports programming on the main with Stat Chat, audible feed back

• Supports read-back on Programming Track

• Magnetic Reset to Defaults

• Analog Control using the Quantum Engineer 

• I/O Revolution-U 9 pin and 8 Pin JST for additional function outputs

• Co-Processor Technology

THROTTLE FEATURES
Supports 14, 28, and 128 speed step modes.

• Speed interpolation provides super smooth 128 speed step response

• Programmable acceleration, deceleration, starting voltage

• 7 bit consist addressing (CV-19)

• High Frequency Silent Motor Drive

• BEMF/Load Compensation

• RTC Regulated Throttle Control, self adjusts locomotives in a consist - an exclusive Quantum feature

SOUND FEATURES

• 8 Sound Channels

• High quality 16 bit digital sound

• Individual, adjustable volume controls

• 1-2 Watt audio amplifier

• Polyphonic Sound Processor 

• Doppler Effect

• Break Squeal

• Air Brakes

• Stat Chat, Verbal Audible response to programming commands

• Side Rod Clank

• Steam Cocks

• Cam Input

• Fuel and Water 

• Sound of Power by Load Conditions

• Sound of Power By Function Command

• Improved Notching and Transitions

• Improved Chuff See Above

• Wheel Slip

How to Determine Which Decoder to Order?
We prefer that you contact your dealer to verify you are making the right choice.

1. Choose either the Atlas Revolution or the Generic Revolution depending on a steam or diesel application and the space you have available. The Atlas style is primarily for diesels but may be used for steam if the space dictates so. There is no cam input. The Revolution's design is suitable for almost all applications.

2. Make sure to try to optimize the space you have for the speaker and baffles. If there is space for 2 speakers, that’s the best option.

3. Once you have determined the above then you can decide on the appropriate part # for the sounds you want.

Part number selections would be as follows:

Revolution-A for the Atlas format.

Product Description	Type	P/N
“QSI Revolution-A”	Steam	3XXX-XXX
	Diesel	1XXX-XXX

Revolution-U for the universal format. 

Product Description	Type	P/N
“QSI Revolution-A”	Steam	3XXX-XXX
	Diesel	1XXX-XXX