MASSOTH
7.
GLOSSAR
•
Bit
The word “bit” is the truncated form of the term “binary digit.” A bit is the smallest unit of
digital data, having a value of either “0” or “1.” Eight bits form one “byte” of digital
information.
•
Booster
A booster amplifies a low power DCC signal, providing additional power to the model
railway. Each booster supplies a single, isolated ‘power district’ on the layout.
•
Bus / Bus system
A bus system is the electrical connection or data highway between control components
of a DCC system. The various bus systems being currently utilized by different
manufacturers are typically not compatible. For example, the bus system for Massoth
components is called the DiMAX bus. The bus system for Lenz is XpressNet. The bus
system for Digitrax is LocoNet. Each features a separate and distinct communication
protocol.
•
Byte
A byte is a unit of computer information consisting of eight bits. The decimal value of a
byte varies between
0
and
255
.
•
Central Station
The central station is the
brain
of a digital system. All commands, feedback
instructions, etc., are processed in the central station. The central station generates
the bi-polar DC waveform which is subsequently amplified by a DCC booster to power
the track bus. The central station communicates with DCC components – cabs,
wireless receivers, feedback modules, etc - via the bus system (DiMAX, LocoNet,
XpressNet, etc.).
•
Computer Interface or PC Interface
A computer interface allows the user to connect a digital system to a computer.
Typically, the interface is a 9-pin serial connector. With appropriate software, the
computer can be used to control the model railway. Many advanced digital systems
include an integral computer interface.
•
CV – Configuration Variable
DCC decoders allow the user to program various settings through the use of
configuration variables
or CVs. A CV consists of one byte (eight bits) of information
and may have a value between
0
and
255
.
DiMAX
®
1203B Digital Booster
20