Customer Equipment “The Effects on the HFC Plant”

A L&D PerspectiveRyan Gerberich & Scott Baker

Sources of Noise

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Sources of Noise

Effects of Noise

•Outages

•Tiling picture

•No picture

•Slow internet

•Robotized voice

•Dropped calls

Effects of Noise

Accumulation of noise back to the node

Teaching how tocombat noise!!!

Building Value

Explain the importance of correcting noise related issues

Quick Facts

• Most labor intensive part of the network• Costliest part of the network ~ 3 times more

footage• Seven out of ten service calls are generated

by problems at the drop

Drop System Ingress Mitigation Program

(DSIMP)

THE 5 STEPS TO DSIMP

Ask the customer to turn on all appliances including

TV,VCR,DVD

-the more equipment they turn on, the better.

Step #1

Plug the customers drop into your meter and check the 5 to 42 mHz return “Upstream Spectrum”

- 30 dBmV is our benchmark

We are looking for ingress energy to be lower than - 30 dBmV.

Step #2

Forward and return scans must be made.

Tiling can be caused by unwanted energy under forward carriers also.

Step #3

Peak Hold-

We use this function to catch fast moving transient noise.

Step #3

Divide and conquer

Step #4

Verify individual outlets

and educate the customer

Step #5

Real hands-on experience

Mobil DSIMP Training Lab

Mobil DSIMP Training Lab

Mobil DSIMP Training Lab

Mobil DSIMP Training Lab

•Qam Generator

•CSO and CTB Generator

•Ghosting

•White Noise

•HD Antenna

•Hum Bar

•Low Level Attenuator

•Flux Capacitor (88mph)

Mobil DSIMP Training Lab

Mobil DSIMP Training Lab

-80

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Center: 25.000 MHzSpan: 40.000 MHzRBW: 300 KHz VBW: 100 KHz Dwell: 400 µS

In-Band Power 13.273 dBmV

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Center: 25.000 MHzSpan: 40.000 MHzRBW: 300 KHz VBW: 100 KHz Dwell: 400 µS

In-Band Power 12.920 dBmV

Mobil DSIMP Training Lab

Questions?

Thank You

Keith Boyd, Bryan Saylor,

Kris Sharp

TVC COMMUNICATIONS

And special thanks to: