Configuring Light Ports on Quantum Revolution-A

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The Quantum Revolution-A has many exclusive lighting features, this hints and tips info outlines the process.

The Quantum Revolution-A sound decoder has 6 light ports or outputs. These are numbered 1-6 and must be configured for the following features using the Quantum Programmer. Default diesel settings (after 7-28-08) are shown below.

Ports 1 and 2 are reserved for the front and rear headlights. Ports 3 to 6 can be configured for any other feature. Note that each port can only have one feature assigned to it and can only be changed using the QSI Programmer (sold separately).

Light Output Settings CVs
(consult the users manual for your DCC system on programming CVs)

QSI CV Numbers

QSI uses several unique CVs in their decoders. These have up to 3 parts.
Example: CV 55.70.1

1. 55 is the CV number (think of this as a room in a house)
2. 70 is the primary index (think of this as a closet in the room)
3. 1 is the secondary index (think of this as a shelf in the closet)

To Set a QSI CVs

1. Set CV49 to the primary index value
2. Set CV50 to the secondary index value (if no secondary index is shown set CV 50 to 0)
3. Now set the CV # to whatever value gives you the feature desired.

Common CVs to Modify Light Outputs on QSI Revolution-A

(Cheat Sheet)

Front Headlight (Port 1)

CV 55.70.0 Initial State
1 = Automatic Control
2 = ON
3 = Dim

CV 55.70.1 Automatic Configuration
86 = Bright in FWD, Dim in NFF, DIM in REV, Dim in NFR
2 = Bright in FWD, OFF in NFF, OFF in REV, OFF in NFR

Rear Headlight (Port 2)

CV 55.73.0 Initial State
1 = Automatic Control
2 = ON
3 = Dim

CV 55.73.1 Automatic Configuration
101 = Bright in REV, Dim in NFR, Dim, FWD, Dim in NFF
32 = Bright in REV, OFF in NFR, OFF in FWD, OFF in NFF

Front Ditch Lights (Port 3 – Left, Port 4 – Right)
Both work together.

CV 55.84.0 Initial State
1 = Automatic Control
2 = ON
3 = Dim

CV 55.84.1 Automatic FWD
0 = OFF
1 = Dim
2 = Bright
3 = Strobe
4 = OFF (Strobe with horn)
5 = Dim (Strobe with horn)
6 = Bright (Strobe with horn)

CV 55.84.2 Neutral From FWD
0 = OFF
1 = Dim
2 = Bright
3 = Strobe
4 = OFF (Strobe with horn)
5 = Dim (Strobe with horn)
6 = Bright (Strobe with horn)

CV 55.84.3 Automatic REV
0 = OFF
1 = Dim
2 = Bright
3 = Strobe
4 = OFF (Strobe with horn)
5 = Dim (Strobe with horn)
6 = Bright (Strobe with horn)

CV 55.84.4 Neutral From REV
0 = OFF
1 = Dim
2 = Bright
3 = Strobe
4 = OFF (Strobe with horn)
5 = Dim (Strobe with horn)
6 = Bright (Strobe with horn)

Mars Light (Port 5)

CV 55.76.0 Initial State
1 = Automatic Control
2 = ON
3 = Dim

CV 55.76.1 Automatic FWD
0 = OFF
1 = Dim
2 = Bright
3 = Strobe

CV 55.76.2 Automatic Neutral From FWD
0 = OFF
1 = Dim
2 = Bright
3 = Strobe

CV 55.76.3 Automatic REV
0 = OFF
1 = Dim
2 = Bright
3 = Strobe

CV 55.76.4 Automatic Neutral From REV
0 = OFF
1 = Dim
2 = Bright
3 = Strobe

Overhead Beacon (Port 6)
Works with F12 button.

CV 55.92.0 Initial State
0 = OFF
2 = Blinking Light
18 = Rotating Beacon
34 = Strobe Light

For more options see NMRA Reference Manual for QSI Quatum Q1a and Q2 Equipped Locomotives.