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WorksheetsBlock 5 - 2f - data bus
Total questions: 21
Worksheet time: 14mins
What is a remote terminal?
used with stub lengths between 1 and 20 feet.
Shielded twisted pair wires make up the transmission lines of the 1553B data bus and a number
of attached stubs.
an avionics unit designed to transfer data between an aircraft
system and the data bus.
the avionics unit responsible for coordinating the flow of
information on the data bus
What is one type of coupler?
(a)
In a 1553B network, the data unit is the
(a)
Each word is 21 bits long with 3 bits for sync, 16 bits of data and 4 bit for parity check.
True
False
The command and status word’s 16 bits of data are divided into two parts; 5 bits for address and 11 bits for data.
True
False
What kind of word is the first word of every message sent by the bus controller?
(a)
Which word is transmitted by the RT in response to the bus controller command?
(a)
Data words may be transmitted by the bus controller or RTs, and contain the information to be transferred from one avionics unit to another.
True
False
The basic fiber optic bus configuration operates at...
(a)
How far is the intended range of RS-232
(a)
Name a kind of encoding is supported in RS-232
(a)
What direction will, data be traveling in a simplex channel?
One direction
Either direction
Both directions at the same time
A widely used rule of thumb indicates cables more than 100 feet (30 m) long will have too much capacitance, unless
special cables are used.
True
False
In GPIB, what is in charge of all communication?
(a)
The GPIB is an 8-bit parallel data transfer bus.
False
True
Name one line of handshaking
(a)
Which coupled stub has the disadvantage of needing for an extra line replaceable unit (LRU) in the aircraft for each RT.
Gnome coupler
Transformer-coupled stub
Direct-coupled stub
Data bus coupler
Unlike the transformer-coupled stub, the direct-coupled stub can only be used with stubs less than one foot in length. Therefore, making it used internally to the bus controller (bc)
False
True
Which can serve as a backup bus controller (BC)?
Remote terminal (RT)
Bus monitor
Data bus
Data bus coupler
What is another name for name for a General Purpose Interface Bus (GPIB)?
Hewlett Packet Interface Bus (HPIB)
Institute of Electrical and Electronic Engineers (IEEE-488)
DB25
Military Standard 1553B Data Bus
Recommended Standard 232 (RS-232)
GBIP addressing is a number between 0 and 31
False
True
