You determine receiver sensitivity by measuring the power level of what signal?

You determine receiver sensitivity by measuring the power  level of what signal?
by

1 Answer

Answer :

Minimum discernible signal (mds).
by

Related questions

When measuring receiver sensitivity, what quantities must you add to the dBm reading obtained on the signal generator or test set?

Description : When measuring receiver sensitivity, what quantities must you add to the dBm reading obtained on the signal generator or test set?

Last Answer : Attenuations of the directional coupler and the connecting cable.

ECE Board Exam March 1996 What is the purpose of the receiver’s squelch circuit? A. To overcome fluctuations in the level the RF signal arriving at the receiver antenna B. To prevent fluctuations in the AGC bias level C. To reduce the receiver’s sensitivity to all incoming signals D. To prevent amplified noise from reaching the loudspeaker during the absence of an incoming signal

Description : ECE Board Exam March 1996 What is the purpose of the receiver's squelch circuit? A. To overcome fluctuations in the level the RF signal arriving at the receiver antenna B. To prevent ... signals D. To prevent amplified noise from reaching the loudspeaker during the absence of an incoming signal

Last Answer : D. To prevent amplified noise from reaching the loudspeaker during the absence of an incoming signal

A loss of receiver sensitivity has the same effect on range performance as what other loss?

Description : A loss of receiver sensitivity has the same effect on range performance as what other loss?

Last Answer : Transmitter power loss.

Which amplifier stage (the preamplifier or the postamplifier) is a dominant contributor of noise and significantly influences the sensitivity of the receiver?

Description : Which amplifier stage (the preamplifier or the postamplifier) is a dominant contributor of noise and significantly influences the sensitivity of the receiver?

Last Answer : The preamplifier.

What is the main factor that determines receiver sensitivity?

Description : What is the main factor that determines receiver sensitivity?

Last Answer : Noise

. Which part of the receiver amplifies the electrical signal to a level suitable for further signal processing?

Description : . Which part of the receiver amplifies the electrical signal to a level suitable for further signal processing?

Last Answer : Amplifier.

Which component of the receiver produces the signal that is mixed with the received signal to produce the IF signal?

Description : Which component of the receiver produces the signal that is mixed with the received signal to produce the IF signal?

Last Answer : Local oscillator.

what causes the initial and final pulses on the receiver output signal?

Description : what causes the initial and final pulses on the receiver output signal?

Last Answer : Leakage from the duplexer.

What does a tone control circuit in a receiver do to the audio signal?

Description : What does a tone control circuit in a receiver do to the audio signal?

Last Answer : It controls the amount of bass and treble response.

What limits the sensitivity of a receiver? A. The power supply of the receiver B. The power output of a transmitter C. The noise floor of the receiver D. The distance between the transmitter and receiver

Description : What limits the sensitivity of a receiver? A. The power supply of the receiver B. The power output of a transmitter C. The noise floor of the receiver D. The distance between the transmitter and receiver

Last Answer : C. The noise floor of the receiver

When measuring harmonic distortion, you set the signal generator to input a 15-kHz test signal. To what frequency should you set the wave analyzer?

Description : When measuring harmonic distortion, you set the signal generator to input a 15-kHz test signal. To what frequency should you set the wave analyzer?

Last Answer : 45 kHz.

While measuring frequency response, as the signal generator approaches the lowest and highest frequency the recorder can effectively record, the VTVM reading drops to less than - 3 dB. What does this indicate?

Description : While measuring frequency response, as the signal generator approaches the lowest and highest frequency the recorder can effectively record, the VTVM reading drops to less than - 3 dB. What does this indicate?

Last Answer : The upper and lower limits of the frequency response specification for that tape recorder.

Define selectivity and sensitivity of AM Receiver.

Description : Define selectivity and sensitivity of AM Receiver. 

Last Answer : Selectivity:-It needs to accept signals of the wanted frequency and reject other unwanted frequencies. Sensitivity:-The sensitivity of a radio receiver is its ability to amplify weak signals. It is ... the receiver input terminals to give a standard output power, measured at the output terminals. 

Explain the following characteristics of AM radio receiver: (i) Sensitivity (ii) Selectivity.

Description : Explain the following characteristics of AM radio receiver: (i) Sensitivity (ii) Selectivity.

Last Answer : Sensitivity:- The ability to amplify the weak signals is called sensitivity. It is the function of overall receiver gain. Sensitivity of radio receiver is decided by the gain of the RF IF ... perfectly the receiver is able to select the desired carrier frequency and reject other frequencies. 

Immediately after the transmitter fires, stc reduces the receiver gain to what level?

Description : Immediately after the transmitter fires, stc reduces the receiver gain to what level?

Last Answer : Zero.

Define following terms related to measuring instruments: i) Sensitivity ii) Selectivity.

Description : Define following terms related to measuring instruments: i) Sensitivity ii) Selectivity.

Last Answer : i) Sensitivity: It is the ratio of the change in output signal to the change in input signal of quantity being measured.  ii) Selectivity: It is the term to describe fulfillment of the requirements of measurement by an instrument to be suitable for use in a given situation. 

The minimum optical power a light detector can receive and still produce a usable electrical output signal. ∙ A. light responsivity ∙ B. light sensitivity ∙ C. light collectivity ∙ D. illumination

Description : The minimum optical power a light detector can receive and still produce a usable electrical output signal. ∙ A. light responsivity ∙ B. light sensitivity ∙ C. light collectivity ∙ D. illumination

Last Answer : B. light sensitivity

What term is used to describe the reciprocal of deflection sensitivity of a scope?

Description : What term is used to describe the reciprocal of deflection sensitivity of a scope?

Last Answer : Deflection factor.

Which preamplifier design (high-impedance or transimpedance) provides improvements in bandwidth and greater dynamic range with some degradation in sensitivity from an increase in noise?

Description : Which preamplifier design (high-impedance or transimpedance) provides improvements in bandwidth and greater dynamic range with some degradation in sensitivity from an increase in noise?

Last Answer : Transimpedance.

How is fiber sensitivity to bending losses reduced?

Description : How is fiber sensitivity to bending losses reduced?

Last Answer : Fiber sensitivity to bending losses can be reduced if the refractive index of the core is increased and/or if the overall diameter of the fiber increases.

What is voltmeter sensitivity?

Description : What is voltmeter sensitivity?

Last Answer : It is an indication of the resistance of the meter expressed in ohms per volt. The total resistance of the meter is the sensitivity multiplied by the full-scale voltage.

What is ammeter sensitivity?

Description : What is ammeter sensitivity?

Last Answer : The amount of current that will cause full-scale deflection.

What term is used to express the sensitivity of a voltmeter?

Description : What term is used to express the sensitivity of a voltmeter?

Last Answer : Ohms per volt

(True or False) The larger the current required to produce full-scale deflection of the meter coil, the better the sensitivity of the meter.

Description : (True or False) The larger the current required to produce full-scale deflection of the meter coil, the better the sensitivity of the meter.

Last Answer : False.

Indicate the false statement. Noise figure is defined as A. the ratio of the S/N power supplied at the input terminal of a receiver or amplifier to the S/N power supplied to the output or load resistor B. noise factor expressed in decibels C. an unwanted form of energy tending to interfere with the proper and easy reception and reproduction of wanted signal D. S/N of an ideal system divided by S/N at the output of the receiver or amplifier under test, both working at the same temperature over the same bandwidth and fed from the same source

Description : Indicate the false statement. Noise figure is defined as A. the ratio of the S/N power supplied at the input terminal of a receiver or amplifier to the S/N power supplied to the output or ... under test, both working at the same temperature over the same bandwidth and fed from the same source

Last Answer : C. an unwanted form of energy tending to interfere with the proper and easy reception and reproduction of wanted signals

ECE Board Exam March 1996 The capture area of an antenna is directly proportional to the A. frequency of the received signal B. distance between transmitter and receiver C. gain of the antenna D. power density of the signal

Description : ECE Board Exam March 1996 The capture area of an antenna is directly proportional to the A. frequency of the received signal B. distance between transmitter and receiver C. gain of the antenna D. power density of the signal

Last Answer : C. gain of the antenna

Indecodinga digital signal, the receiver calculates a running average of thereceived signal power, called the _______. A) baseline B) base C) line D) none of the above

Description : Indecodinga digital signal, the receiver calculates a running average of thereceived signal power, called the _______. A) baseline B) base C) line D) none of the above

Last Answer : baseline

Stacking antenna elements A. increases sensitivity to weak signals B. will suppress odd harmonics C. decrease signal to noise ratio D. increases selectivity

Description : Stacking antenna elements A. increases sensitivity to weak signals B. will suppress odd harmonics C. decrease signal to noise ratio D. increases selectivity

Last Answer : A. increases sensitivity to weak signals

Comparing the signal strength arriving at the driven element from the desired direction to the signal strength reaching the driver from the opposite direction. A. Directivity B. Sensitivity C. Beamwidth D. Front-to-back ratio

Description : Comparing the signal strength arriving at the driven element from the desired direction to the signal strength reaching the driver from the opposite direction. A. Directivity B. Sensitivity C. Beamwidth D. Front-to-back ratio

Last Answer : D. Front-to-back ratio

Determine the terrain sensitivity loss for a 4-GHz carrier that is propagating over a very dry, mountainous area. A. -1.25 dB B. -3.05 dB C. -2.01 dB D. -5.01 dB

Description : Determine the terrain sensitivity loss for a 4-GHz carrier that is propagating over a very dry, mountainous area. A. -1.25 dB B. -3.05 dB C. -2.01 dB D. -5.01 dB

Last Answer : A. -1.25 dB

What is the disadvantage of using a double receiver instead of two individual receivers?

Description : What is the disadvantage of using a double receiver instead of two individual receivers?

Last Answer : If one of the receivers goes bad the entire unit must be replaced.

When is a synchro receiver (TR) properly zeroed?

Description : When is a synchro receiver (TR) properly zeroed?

Last Answer : A TR is zeroed when electrical zero voltages exist across its stator windings at the same time its rotor is on zero or on its mechanical reference position.

What is the most likely problem if the transmitter shaft reads 0º when the receiver shaft indicates 180º?

Description : What is the most likely problem if the transmitter shaft reads 0º when the receiver shaft indicates 180º?

Last Answer : The rotor leads on either the transmitter or the receiver are reversed.

What two receiver leads are reversed to reverse the rotor's direction of rotation?

Description : What two receiver leads are reversed to reverse the rotor's direction of rotation?

Last Answer : 1 and S3.

What is the relationship between the transmitter and receiver stator voltages when their rotors are in correspondence?

Description : What is the relationship between the transmitter and receiver stator voltages when their rotors are in correspondence?

Last Answer : The voltages are equal and oppose each other.

What is the physical difference between a synchro transmitter and a synchro receiver?

Description : What is the physical difference between a synchro transmitter and a synchro receiver?

Last Answer : A synchro receiver uses some form of damping to retard excessive oscillations or spinning.

Receiver bandwidth is defined as those frequencies spread between what two points of the receiver response curve?

Description : Receiver bandwidth is defined as those frequencies spread between what two points of the receiver response curve?

Last Answer : Half-power points.

Where should the transmitter spectrum be located with respect to the receiver response curve?

Description : Where should the transmitter spectrum be located with respect to the receiver response curve?

Last Answer : In the center.

A monopulse receiver has how many separate channels?

Description : A monopulse receiver has how many separate channels?

Last Answer : Three.

How does ftc affect receiver gain, if at all?

Description : How does ftc affect receiver gain, if at all?

Last Answer : FTC has no effect on receiver gain

Which receiver component converts the IF pulses to video pulses?

Description : Which receiver component converts the IF pulses to video pulses?

Last Answer : Detector.

What receiver circuit actually produces the IF frequency?

Description : What receiver circuit actually produces the IF frequency?

Last Answer : Mixer.

What type of receiver is most often used in radar systems?

Description : What type of receiver is most often used in radar systems?

Last Answer : Superheterodyne.

What tube in a duplexer has the primary function of disconnecting the receiver?

Description : What tube in a duplexer has the primary function of disconnecting the receiver?

Last Answer : Tr tube.

What is the result of an impedance mismatch between a receiver or transmitter and its transmission line or antenna?

Description : What is the result of an impedance mismatch between a receiver or transmitter and its transmission line or antenna?

Last Answer : High vswr, which equates to poor reception or a loss of power output.

Define receiver dynamic range.

Description : Define receiver dynamic range.

Last Answer : The range of optical power levels over which the receiver operates within the specified values. It

What is a fiber optic receiver?

Description : What is a fiber optic receiver?

Last Answer : An electro-optic device that accepts optical signals from an optical fiber and converts them into electrical signals

List the main types of receiver noise.

Description : List the main types of receiver noise.

Last Answer : Thermal noise, dark current noise, and quantum noise

List the key operational parameters used to define receiver performance.

Description : List the key operational parameters used to define receiver performance.

Last Answer : Receiver sensitivity, bandwidth, and dynamic range.

What is the function of a crystal filter in a receiver?

Description : What is the function of a crystal filter in a receiver?

Last Answer : It is used to achieve maximum selectivity.