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32 Cards in this Set

  • Front
  • Back
The 3 analog-to-digital conversion operations are?
sampling, quantization, and encoding.
The analog signal input is
compared to a given WHAT, and the difference between signals is used to compute the digital quantity indicated by the analog signal.
reference signal
This is done to determine the
characteristic that contains the analog quantity, such as
the signal’s amplitude
takes the sampled analog value and converts it to the nearest binary value or quantity.
The accuracy of a binary quantity is limited to the value of the?
least significant bit
operation reduces the result of the conversion to a binary code acceptable to the digital
equipments that use the data.
standardized binary words used to transfer angular
measurements between shipboard tactical data system
Binary angular measurement words (BAMs)
reflected binary code is used in devices where a transition from one consecutive value to another takes place, such as
angular measurement and encoding. The code is
designed to change from one value to the next with only
one bit change
Gray code
encoders allow for immediate
decimal display of the converter output. They are found in such devices as digital voltmeters and other types of decimal display devices
used throughout naval ships for the rapid transmission
of analog information between equipments and
provide torque or turning force to drive light loads such as indicator dials, pointers, or other mechanical outputs.
Torque systems
Provide an electrical
output used to control the power that performs
mechanical work.
Control synchro systems
The control synchro normally feeds a control WHAT , not a control WHAT?
Most shipboard synchro systems
operate on a supply voltage of 115 volts ac at a
frequency of?
60 or 400 Hz
Synchros operating at 115
volts 60/400 Hz are generally more accurate.
400 HZ
method uses the reference voltage to determine the time to sample the stator voltages for conversion to take place.
The sector conversion
The ideal time to sample the
stator voltages?
is when the reference voltage is at or near the positive or the negative peak of its cycle.
method divides the 360 degrees of angular measurement into eight 45-degree.
The octant conversion
Three types of D/A conversion
are commonly encountered on shipboard systems:
is a device that receives digital information in the form of a binary word and transforms that information into variations of an analog signal.
digital-to-analog converter (DAC)
is a multipurpose converter capable of accepting parallel digital data and converting it to 400-HZ linear, resolver, or synchro outputs.
Digital-to-Analog Converter (DAC) CV-2517B/UYK
DAC can be divided into three major sections:
digital section
analog section
power supply section
processes the EF word and the control address word
upon receipt of the EF signal from the computer.
digital section
is to convert the data words received from the digital section into proportional analog voltages.
analog section
provides five regulated dc voltages (-4.8,-15, +15, -26.65, and +26.65 vdc) that support the operation of the digital and analog sections of the DAC
power supply section
provides the means of exchanging data, control,
and status information between either one of two computers and a variety of input/output devices
including multiple control, status, and synchro signal
used to the facilities for testing each type of relay used in the test fuses for continuity.
relay tester assembly
test fuses for continuity
Fuse Tester Assembly
the switchboard
routes the output of a device back to the same or similar
device as input data.
receive control signals from the multiplexing
data converter to position the automatic junction rotary
(AJR) switches and provide status signals to indicate
switch status.
performs data routing, power monitoring, action cutout
(ACO) switching, and digital switching.
The digital fire control switchboard (DFCS)
Two separate conversions
are performed for each input, one for the what speed and
one for the what speed.