ROC II, Course II, Lesson 9

When configuring the upstream return in a distribution amplifier with multiple upstream ports, the amplitude levels for which port should be adjusted first?

distribution amplifier upstream port with the most attenuation in its upstream path

What is the expected DC voltage on most hybrid fiber coax (HFC) network equipment?

+24 VDC, ± 0.5 V

Describe an application for a distribution amplifier in a hybrid fiber/coax (HFC) network?

maintain downstream amplitude levels to the addresses farthest from the fiber-node

How is the AC voltage separated from the RF signal in a distribution amplifier?

by a capacitor that passes RF but blocks the low frequency 60 hertz (Hz) AC voltage which finds a low resistance path through the RF choke that blocks RF

What is installed in the input stage of a distribution amplifier for a flat frequency response into the input amplifier when the input signal has negative tilt?

cable equalizer with positive slope

What value of interstage equalizer should be installed if the associated amplifier tombstone field is blank and the amplifier output slope is 7 dB?

default factory value

When configuring the input stage of a distribution amplifier, what element values can vary from those in the amplifier tombstone, depending on the input amplitude measurements?

input equalizer and attenuator pad values

What term describes the frequency spectrum into an amplifier having higher amplitude at low frequencies than the high frequencies?

negative tilt

In a distribution amplifier, why is the frequency response at the input of the second output stage sloped?

reduce intermodulation distortion levels caused by amplifying high amplitude input levels

Why is the term "gain control" applied to amplifier gain and controls inaccurate?

the only way to vary the output of any amplifier is to adjust the amplitude level of the signal going into the amplifier