1-35.
1-36.
1-37.
1-38.
What geometric shape is
displayed on a CRT if two
sine waves of equal
amplitude and 90° out of
phase are applied to
and Y axes?
1.
Square
2.
Circle
3.
Rectangle
4.
Diamond
Symbols painted on a
are defined by which
following equipment?
the X
PPI CRT
of the
1.
2.
3.
4.
For
Pulse amplifier
Symbol generator
Computer
PPI console
the generation of analog
waveform symbols, which of
the following equipment is
required?
1.
2.
3.
4.
Computer, pulse
amplifier,
and CIGARS
console (console
internally generated and
refreshed symbols)
Computer, pulse
amplifier/symbol
generator (PA/SG), and
console(s)
Computer,
symbol
generator, and
console(s)
PA/SG and console(s)
Which of the following
equipment uses computer
output data to position the
blanked CRT beam to the
coordinates of the symbol?
1.
Console
2.
P A
3.
S G
4.
Computer
1-39.
1-40.
1-41.
1-42.
The timing period during
which the analog waveform
symbol is mechanized is
known as
1.
X-time
2.
Y-time
3.
Z-time
4.
P-time
What is the source of the
analog symbol waveforms
received by the console
deflection amplifiers?
1.
SG (symbol generator)
2.
PA (pulse amplifier)
3.
CIGARS console
4.
Computer
What action, if any, must
take place to prevent
flicker of the displayed
Symbology?
1.
The persistence of the
CRT must be decreased
2.
The persistence of the
CRT must be increased
3.
The symbol must be
refreshed
periodically
by repainting the symbol
4.
None,
symbols do not
flicker
The digital strike symbol
generator stores symbol
stroke codes in what type of
memory ?
1.
2.
3.
4.
Random access memory
(RAM)
Read-only-memory (ROM)
Programmable
read-only-memory (PROM)
Either 2 or 3 is
correct,
depending on
configuration
5
