When calculating return path attenuation in the drop system What is the attenuation loss through the hot leg of an unbalanced three way splitter at sub split frequencies?

When calculating return path attenuation in the drop system, what is the attenuation loss through the hot leg of an unbalanced three way splitter at sub-split frequencies? 3.5 dB. What purpose do diplex filters fulfill when installed at the input and output of a two way amplifier module?

How does the signal attenuation through coaxial cable in the sub band frequency spectrum compare to the attenuation at forward path frequencies?

How does the signal attenuation through coaxial cable in the sub-band frequency spectrum compare to the attenuation at forward path frequincies? At sub-band frequincies, the signal attenuation is significantly less than in the forward path.

What enables STB and DOCSIS modems to operate as completely separate systems that operate independent of each other?

What enables set-top boxes (STB) and Data over cable service interface specification (DOCSIS) modems to operate as completely separate systems that operate independent of each other? (answer) STB and DOCSIS modem are assigned different upstream channels with dedicated receivers in the headend.

What information can be gathered by a return path monitoring system that captures the quadrature amplitude modulation return channel from a DOCSIS modem?

What information can be gathered by a return path monitoring system that captures the quadrature amplitude modulation (QAM) return channel from a (DOCSIS) modem? The group delay, in band ripple/tilt, micro-reflections on the QAM channel.

What is a return path attenuator?

F Type Return Path Attenuators used to adjust the reverse or up stream levels in a distribution system. They attenuate the signal in the 5-42 MHz bandwidth with minimum insertion …

What is the range of return path frequencies in the sub split spectrum plan?

The forward (or downstream) path is from the cable operator’s headend to the subscriber and is generally from 54 MHz to as high as 1000 MHz. While the upstream is what is returned from every house back to the cable operator’s headend. This frequency range is typically from 5 MHz to 42 MHz.

How does laser clipping in the return path characterized on a spectrum analyzer?

How is laser clipping in the return path characterized on a spectrum analyzer? Low value taps have less isolation between ports and offer less attenuation to ingress and impulse noise coming from an individual drop system.

Why are RF return channel carriers unusable for aligning return path equipment?

Why are RF return channel carriers unusable for aligning return path equipment? RF return channels carriers are of short durationand from multiple sources. … These frequincies are at the edges of the return frequency spectrum and are available.

What could be the result of unnecessarily amplifying the high speed data return path?

What could be the result of unnecessarily amplifying the high-speed data return path? System noise fluctuations may cause disruptions to high-speed data service.

What is the cumulative power into the cable modem termination system when two carriers of the same amplitude and bandwidth are bonded and simultaneously transmitted?

When carriers of equal amplitude and bandwidth are bonded and simultaneously transmitted, the cumulative power into the CMTS increases by 3 dB for two carriers and by 6 dB for four carriers.

What causes common path distortion?

Common path distortion (CPD) is an impairment that afflicts two-way cable systems. Point contact diodes caused by metallic corrosion in the plant mix downstream signals. Some of the mixing products fall into an upstream frequency band where they interfere with upstream signals.

Why is using dBmV a voltage measurement acceptable to express the power per HZ power allocation across the channel bandwidth?

Why is using dBmV, a voltage measurement, acceptable to express the power per HZ power allocation across the channel bandwidth? Because a constant 75-ohm impedance is being used.

What is a function of a cable modem emulator?

What is a function of a cable modem emulator? ) Test and quantify the drop’s ability to provide high-speed data (HSD) or Internet protocol (IP) Voice service. One of the first steps when you reach the site is to inspect the drop cable at the tap. Damaged cable can cause.

Why is it necessary to balance each path separately?

Why is it necessary to balance and sweet each return path through a distribution amplifier separately? Each return path through a distribution amplifier may contain different amounts of attenuation,so it’s necessary to balance each path separately.

What is the function of the multiple quadrature amplitude modulation QAM tuners?

QAM (quadrature amplitude modulation) is a method of combining two amplitude modulation (AM) signals into a single channel. This approach helps double its effective bandwidth. QAM is also used with pulse AM (PAM) in digital systems, like wireless applications.

What is a twisted pair cabling composed of?

copper
Twisted Pair Cables :

Twisted pair cables have two conductors that are generally made up of copper and each conductor has insulation. These two conductors are twisted together, thus giving the name twisted pair cables. One of the conductors is used to carry the signal and the other is used as a ground reference only.

What organization is responsible for the Docsis standard?

Cable Television Laboratories (CableLabs) is the de facto industry standards organization and also has responsibility for certifying that a new cable modem is compliant with DOCSIS.

Which tool do you use to accurately measure the output voltage of a ferroresonant power supply?

Which tool do you use to accurately measure the output voltage of a ferroresonant power supply? A true RMS (root mean square) DMM. You are performing periodic maintenance on a standby ferroresonant power supply.

What is the type of modulation used by twisted pair cable computer networks known as?

What is the type of modulation used by twisted pair cable computer networks known as? Line coding is the modulation of an electrical charge so that each side of a connection knows what is a one and what is a zero.

What are RJ45 connectors?

The eight-pin RJ45 connector is a standardised interface which often connects a computer to a local area network (LAN). This type of connector was originally developed for telephone communications but is now used in a range of applications. The abbreviation, RJ45, stands for Registered Jack-45.

What is twisted pair cable in networking?

Twisted-pair cable is a type of cabling that is used for telephone communications and most modern Ethernet networks. A pair of wires forms a circuit that can transmit data. The pairs are twisted to provide protection against crosstalk, the noise generated by adjacent pairs.