Tsunami2 Digital Sound Decoder. Diesel Manual - part 3
All Aboard!
Tsunami2 Diesel User’s Guide
12
Some CVs use individual bits to control multiple features. This allows up to 8 distinct features to
be controlled by a single CV. As the bit variables can take on only one of two values (0 or 1),
they are usually used to control features that are either OFF or ON (i.e., disabled or enabled).
Tip: Think of bits as light switches to turn ON or OFF various features.
Each bit (0-
7) carries a “weight” within the structure of a CV. Beginning with a bit weight of 1 for
bit 0 (located farthest to the right, as CVs are interpreted from right to left) and doubling in value
for each successive bit (i.e., bit 0 = 1, bit 1 = 2, bit 2 = 4, bit 3 = 8, bit 4 = 16, bit 5 = 32, bit 6 =
64., and bit 7 = 128). The sum, or total, of these bit weights represents the value entered into
the CV for programming.
Note: An alternative method to using basic addition would be to compare the bit structure (1s
and 0s) to the table located in Appendix A. In this example we would locate the binary value
00100010 and use the decimal or hex value found next to it when programming the CV.
CV Programming Tool
To make the process of calculating CV values as easy as possible, we’ve included an
interactive CV programming tool with this manual. This tool will calculate the value to be
programmed into any CV based upon the individual bits that have been turned ON or OFF. We
recommend using this tool along with the bit configuration charts found in the Tsunami2 Diesel
Technical Reference as a guide for programming.
If viewing this document digitally (i.e. computer, tablet or smart phone) you may simply enter a
“1” or “0” into any of the bit fields below. The CV value will automatically be calculated based on
which bits are turned on.
If referencing this manual in print form, write the 1s and 0s in the bit boxes and use the
associated bit weights as a way to manually calculate the value, similar to the example
referenced below.
BIT POSITION Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CV VALUE
ON/OFF
______ ______ ______ ______ ______ ______ ______ ______
________
BIT WEIGHT
128
64
32
16
8
4
2
1
0