Configuring Light Ports on Quantum Revolution-A
Discontinued, replaced by Titan series of sound decoders.
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 Q2Upgrade and then downloading the configured firmware to the locomotive using the Quantum 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
- 55 is the CV number (think of this as a room in a house)
- 70 is the primary index (think of this as a closet in the room)
- 1 is the secondary index (think of this as a shelf in the closet)
To Set a QSI CVs
- Set CV49 to the primary index value
- Set CV50 to the secondary index value (if no secondary index is shown set CV 50 to 0)
- Now set the CV # to whatever value gives you the feature desired.
Example: CV 55.70.1
- Set CV 49 to 70
- Set CV 50 to 1
- Set CV 55 to 6
This will make the Front Headlight Bright when the loco is moving Forward, Dim when it is moving Forward and stops, Off in Reverse, and OFF when it is going in reverse and comes to a stop.
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.
