Basic Programing
Tsunami2 Electric User’s Guide
33
CV 114: Enable Auto-Start
Auto-Start is enabled from the factory in CV 114 to allow the pantograph to automatically extend
and energize the system when the decoder receives track power. For DCC operation, the
pantograph will not extend when the decoder receives track power when auto-start is disabled.
For analog mode (DC) operation, the pantograph will automatically extend and energize the
system when the decoder receives track power regardless of CV 114.
Adjusting Volume Levels
Volume control CVs allow you to set the master volume level for all sound effects, set the
volume of each sound effect, and enable quiet mode.
Adjust the Master Volume Level
CV 128 (Master Volume) is used to adjust the volume level of all enabled sound effects, i.e., all
mixer channels. Values from 0 to 255 may be programmed into CV 128 to set the volume level
from 0% to 100%.
Adjust Primary Mixer Volume Levels
CVs 129-160 (Primary Mixer Volume Levels) are used for setting the volume level of each
sound effect, similar to a modern sound studio mixing board. Like CV 128 (Master Volume),
values from 0 to 255 may be programmed into mixer channel CVs to adjust volume levels. For
the best sound quality, run the mixer as “hot” as possible by optimizing the volume levels. First
determine the sound effect that should be the loudest and set the corresponding CV to around
225. The airhorn, for instance, usually creates the loudest sound. Then, adjust the volume levels
of the remaining of the sound effects relative to the airhorn. When you have all the sound effects
to their respective volume levels, adjust the overall volume level with CV 128 as needed.
Adjusting volume levels calls for a certain level of prudence to avoid “clipping” or “limiting,”
which occurs when the sum of two or more signals exceeds the capacity of the output channel.
Clipping is the clicking or popping sounds you may have heard through a pair of broken
headphones. To avoid clipping, consider the sounds you play at the same time and make sure
their volume levels aren’t set too high. For example, the airhorn should be as loud as possible
without causing clipping. If you start to hear some distortion, lower the volume level accordingly.
Note:
Be sure that your speaker is rated to match the audio amplifier of your decoder. Ratings
for each format are available on the packaging and at www.soundtraxx.com. Failure to do so
could cause severe damage to your speaker.
Refer to Table I on the next page to view default values for CVs 128-160.