Digital Data Systems

Front 1

The 3 analog-to-digital conversion operations are?

Back 1

sampling, quantization, and encoding.

Front 2

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.

Back 2

reference signal

Front 3

This is done to determine the
characteristic that contains the analog quantity, such as
the signal’s amplitude

Back 3

sampling

Front 4

takes the sampled analog value and converts it to the nearest binary value or quantity.

Back 4

quantization

Front 5

The accuracy of a binary quantity is limited to the value of the?

Back 5

least significant bit

Front 6

operation reduces the result of the conversion to a binary code acceptable to the digital
equipments that use the data.

Back 6

encoding

Front 7

standardized binary words used to transfer angular
measurements between shipboard tactical data system
equipments.

Back 7

Binary angular measurement words (BAMs)

Front 8

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

Back 8

Gray code

Front 9

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

Back 9

BINARY-CODED DECIMAL (BCD)

Front 10

used throughout naval ships for the rapid transmission
of analog information between equipments and
stations

Back 10

Synchros

Front 11

provide torque or turning force to drive light loads such as indicator dials, pointers, or other mechanical outputs.

Back 11

Torque systems

Front 12

Provide an electrical
output used to control the power that performs
mechanical work.

Back 12

Control synchro systems

Front 13

The control synchro normally feeds a control WHAT , not a control WHAT?

Back 13

transformer
receiver

Front 14

Most shipboard synchro systems
operate on a supply voltage of 115 volts ac at a
frequency of?

Back 14

60 or 400 Hz

Front 15

Synchros operating at 115
volts 60/400 Hz are generally more accurate.

Back 15

400 HZ

Front 16

method uses the reference voltage to determine the time to sample the stator voltages for conversion to take place.

Back 16

The sector conversion

Front 17

The ideal time to sample the
stator voltages?

Back 17

is when the reference voltage is at or near the positive or the negative peak of its cycle.

Front 18

method divides the 360 degrees of angular measurement into eight 45-degree.

Back 18

The octant conversion

Front 19

Three types of D/A conversion
are commonly encountered on shipboard systems:

Back 19

digital-to-linear
digital-to-scalar
digital-tosynchro

Front 20

is a device that receives digital information in the form of a binary word and transforms that information into variations of an analog signal.

Back 20

digital-to-analog converter (DAC)

Front 21

is a multipurpose converter capable of accepting parallel digital data and converting it to 400-HZ linear, resolver, or synchro outputs.

Back 21

Digital-to-Analog Converter (DAC) CV-2517B/UYK

Front 22

DAC can be divided into three major sections:

Back 22

digital section
analog section
power supply section

Front 23

processes the EF word and the control address word
upon receipt of the EF signal from the computer.

Back 23

digital section

Front 24

is to convert the data words received from the digital section into proportional analog voltages.

Back 24

analog section

Front 25

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

Back 25

power supply section

Front 26

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
interfaces

Back 26

KEYSET CENTRAL MULTIPLEXER

Front 27

used to the facilities for testing each type of relay used in the test fuses for continuity.

Back 27

relay tester assembly

Front 28

test fuses for continuity

Back 28

Fuse Tester Assembly

Front 29

the switchboard
routes the output of a device back to the same or similar
device as input data.

Back 29

END-AROUND-TEST (EAT)

Front 30

receive control signals from the multiplexing
data converter to position the automatic junction rotary
(AJR) switches and provide status signals to indicate
switch status.

Back 30

ANALOG SWITCHBOARDS

Front 31

performs data routing, power monitoring, action cutout
(ACO) switching, and digital switching.

Back 31

The digital fire control switchboard (DFCS)

Front 32

Two separate conversions
are performed for each input, one for the what speed and
one for the what speed.

Back 32

fine
coarse