Proof of Preformance 16 Flashcards

1
Q

When did the FCC create POP current standards

A

December 30, 1992

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2
Q

There are six test points for up to

A

12,500 subscribers

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3
Q

Add one test point for each additional

A

12,500 subscribers.

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4
Q

Systems with less than___customers are not required to do POP testing as long as they have a high confidence level that their network can meet the standards.

A

1,000

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5
Q

Many of the FCC POP standards require that you take measurements at the end of a

A

100 foot test drop.

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6
Q

The tests must be made on a minimum of _____ channels

A

four (4)

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7
Q

The tests must be made on a minimum of four (4) channels plus one additional channel for every

A

100 MHz

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8
Q

Hum is not frequency-specific; only ___ analog channel per test point needs to be tested.

A

one

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9
Q

FCC POP testing applies to ____channels ONLY

A

analog

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10
Q

Color Performance tests are done once every

A

three years.

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11
Q

Video Carrier Level Stability (24-hour) test are done twice a year, when?

A

January and July

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12
Q

Color Performance tests are usually performed by a

A

Head End Technician

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13
Q

A spectrum analyzer feature that allows the user to make otherwise intrusive FCC POP tests in a non-intrusive manner.

A

gated testing

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14
Q

(EIA)

A

Electronic Industry Association

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15
Q

The FCC requires that audio carrier frequency for each channel must be

A

4.5 MHz above the video carrier frequency, ± 5 kHz.

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16
Q

Before you measure In-Channel Response, you must either locate a channel that has a

A

quiet line with a test signal on it

17
Q

The FCC requires that Carrier-to-Noise (C/N) ratio must be at least

A

43 dB at each test point.

18
Q

Hum Modulation is a low frequency signal, which the FCC states must be

A

less than 3% of the video carrier level

19
Q

Chrominance to Luminance Delay Inequality – Must be within

A

170 nanoseconds

20
Q

Differential Gain (of the color subcarrier) – Must be within

A

± 20 %.

21
Q

Differential Phase (of the color subcarrier) – Must be within

A

± 10 degrees

22
Q

Monitor entire plant on a continuous basis. Cable system operators must maintain a log of all leaks of 20 microvolts or greater (measured from 3 meters) and repair any leaks within a reasonable timeframe.

A

Continuous Monitoring

23
Q

Monitor entire plant once per quarter. Quarterly monitoring has the same logging and repair requirements as continuous monitoring.

A

Quarterly Monitoring (Rideout)

24
Q

Determine a ground-based Cumulative Leakage Index (CLI) once every twelve months, based on a sampling of at least

A

75 % of the cable strand.

25
Q

A low-pass filter that smoothes out the RF energy after it has passed through the RBW filter.

A

Video Bandwidth Filter (VBW)

26
Q

terminal isolation should be not be less than

A

18dB