SoundTraxx LC Series Owners Manual - Manual (Page 26)

LC SERIES DIGITAL SOUND DECODER OWNER’S MANUAL
26
Phase Select – Alters the timing of the effect so that the effect is either in sync with the other
effects (phase A) or 180 degrees out of phase (phase B). This allows you to have two lights
that flash back and forth if desired.
Grade Crossing Logic - Causes the lighting effect to become active only when the horn (F2) has
been sounded. A typical use would be to cause the ditch lights to flash at a grade crossing.
The grade crossing logic can be used with almost all the Hyperlight™ effects. The On-Off,
dimmable headlight, FRED and flicker effects will not be affected. When the horn function is
released, the other effects will either turn off (strobes and beacons) or revert to a steady on
state (mars light, ditch lights, etc.) as appropriate to prototype practice.
Rule 17 Mode - Converts the headlight and backup light to independent, non-directional lights.
When this mode is active, the headlight is controlled as if it were FX1, Function 5 and the
backup light as FX2 or Function 6.
To set the effect, use Table F on the previous page to look up the required setting for each output
mode and simply program the corresponding CV with that value. If you wish to use ‘Rule 17’
mode, add 64 to the table value. Use CV 49 to set the headlight, CV 50 for the backup light, CV
51 for FX1 and CV 52 for FX2. Note that not all DSD-LCs will support all lighting outputs or CVs.
Refer to the instruction sheet that came with your decoder for more information.
Setting the Flash Rate and Hold Time
CV 59 is used to adjust the flash rate of the Hyperlight effect and has a range of 0-15 with 15
being the slowest flash rate.
CV 59 is also used to set the Grade Crossing Logic Hold Time, that is, the time an effect will
remain flashing after the horn function is released (if the crossing logic is enabled) and has a
range of 0-15 seconds.
To calculate the value of CV 59, use the formula:
CV 59 = Flash Rate + (Hold Time X 16)
For example, to set a flash rate of 3 and a hold time of 2 seconds, we calculate CV 59 = 3 + (2 X
16) = 3+ 32 = 35.
Configure Lighting Control Mode
The DSD-LC supports two modes of headlight operation:
Automatic Direction Control
Both the headlight and backup lights are turned on and off using the F0 function. The DSD-LC
automatically switches the proper light on depending upon locomotive direction.
For automatic direction control, the headlight is mapped to F0(fwd) by setting CV 33 to 1, and
the backup light is mapped to F0(rev) by setting CV 34 to 2. See
Function Mapping on page
24.
“Rule 17” Headlight Operation
This is the more prototypical form of operation and requires the engineer to manually switch
each light on or off individually. Thus, it is possible for both lights to be on at the same time.
For Rule 17 Operation, the headlight is mapped to both F0(fwd) and F0(rev) by setting CV 33
and 34 to 1. The F0 key will now control the headlight in both directions.
The backup light is remapped to Function 6 (FX2) by simply setting CV 50 to 64, which enables
the Rule 17 Mode. The backup light could also be remapped to a different function key by setting
any of CVs 30 through 40 to control FX2.