E7F01

What is the purpose of a prescaler circuit?

1. It divides a higher frequency signal so a low-frequency counter can display the operating frequency

E7F02

Which of the following would be used to reduce a signal’s frequency by a factor of ten?

1. A prescaler

E7F03

What is the function of a decade counter digital IC?

1. It produces one output pulse for every ten input pulses

E7F04

What additional circuitry must be added to a 100-kHz crystal-controlled marker generator so as to provide markers at 50 and 25 kHz?

1. Two flip-flops

E7F05

Which of the following circuits can be combined to produce a 100 kHz fundamental signal with harmonics at 100 kHz intervals?

1. A 1 MHz oscillator and a decade counter

E7F06

Which of these choices best describes a crystal marker generator?

1. A crystal-controlled oscillator that generates a series of reference signals at known frequency intervals

E7F07

Which type of circuit would be a good choice for generating a series of harmonically related receiver calibration signals?

1. A crystal oscillator followed by a frequency divider

E7F08

What is one purpose of a marker generator?

1. To provide a means of calibrating a receiver's frequency settings

E7F09

What determines the accuracy of a frequency counter?

1. The accuracy of the time base

E7F10

How does a conventional frequency counter determine the frequency of a signal?

1. It counts the number of input pulses occurring within a specific period of time

E7F11

What is the purpose of a frequency counter?

1. To provide a digital representation of the frequency of a signal

E7F12

What alternate method of determining frequency, other than by directly counting input pulses, is used by some frequency counters?

1. Period measurement

E7F13

What is an advantage of a period-measuring frequency counter over a direct-count type?

1. It provides improved resolution of signals within a comparable time period

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