Digital Test Equipment Flashcards
The clock circuit is designed to produce a square wave output that is varied by the _________.
frequency adjust potentiometer.
Adjusting the potentiometer changes the frequency of the ———
output square wave.
The square wave is sent to the frequency divider circuit that uses a ______ to produce three square waves of different frequency.
counter
Which circuit divides the square wave into three waves of different frequency?
Frequency Divider
What is the purpose of the logic probe?
The logic probe is used to detect the presence or absence of signals in digital circuits.
Logic probes vary in size and style but all will indicate when _______, or pulsing logic levels are present.
HIGH, LOW
The purpose of the frequency divider on the clock generator is to _______.
produce output sine waves of different frequency
produce output square waves of different frequency
produce output square waves of different amplitude
do none of the above
produce output square waves of different frequency
The purpose of a clock generator is to _______.
produce inputs to digital circuits
supply power for a clock
produce AC sine waves
do all of the above
produce inputs to digital circuits
How does the logic probe indicate a LOW signal?
Red LED illuminates.
Green LED illuminates.
Yellow LED illuminates.
Green LED illuminates.
How does the logic probe indicate a HIGH signal?
Red LED illuminates.
Green LED illuminates.
Yellow LED illuminates.
Red LED illuminates.
What voltage does the logic probe need to operate?
+5 VDC
+250 VDC
+120 VAC
+25 VDC
+5 VDC
