IC 3 - dB Noise

Indicate the voltage level in dB with reference to one volt. This unit is used in video or TV measurement.

• dBW

• dBk

• dBm

• dBV

When the power ratio of the output to input of a circuit is 200. What is the gain in dB?

• 23

• 46

• -23

• -46

What is the reference level for random noise measurement, FIA weighted?

• -82 dBm

• -90 dBm

• -85 dBm

• -77 dBm

A 10 db pad has an output level of -3dBm. The level at the input is:

• 13 dBm

• -7 dBm

• 1 dBm

• 7 dBm

A power level of 50 μW could be expressed as:

• 1.69 dBm

• -4.3 dBm

• 1 dBm

• -13 dBm

A system having an input power of 2 mW an output power of 0.8 mW has a loss of:

• 2.98 dBm

• 3.98 dB

• 3.98 μW

• 1.98 mW

Is the reduction of signal amplitude as it passed over the transmission medium?

• Noise

• Distortion

• Attenuation

• Interface

Signal waveform perturbation or deviation caused by imperfect response of the system to the desired signal

• Noise

• Aliasing

• Distortion

• Interference

Signal attenuation can be corrected by

• Filtering

• Modulation

• Equalization

• Amplification

Signal contamination by extraneous or external sources, such as, other transmitters, power lines and machinery.

• Noise

• Distortion

• Harmonics

• Interference