OSP Expert: Don McCarty

Limited Access Install Procedures for FTTH / DSL / Bonded DSL

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I was recently contacted by the GM of a small independent Telco asking me about good procedures for installation in general and also in this time of COVID-19 pandemic concerns. This is not a problem I’ve had to deal with during my active working career so I reached out to my friend, Randy Lis, the GM of Piedmont Rural Telephone Cooperative (PRTC) in Laurens, South Carolina, and asked about his processes. I have tremendous respect for Randy and PRTC. They are proactive and organized in creating and implementing best practices. Randy referred me to his Outside Plant Supervisor, Mike Foster,…

More on Fault Location in the Copper Infrastructure

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I’ve received many queries about use of the open meter and TDR functions on multifunction test sets — and I offer some tips and knowledge in this month’s column. The Open Meter Function and the TDR Function The open meter function and the TDR function can quickly show the distance to an open cable pair. Both functions can be used for other purposes, such as finding water in a section of air core PIC cables, identifying and finding split cable pairs, unknown load coils, and more. Using the Open Meter Test the pair. Use a volt ohm meter (VOM) to…

Using Your Test Set

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… and Using Your Noggin — In my columns for the past 3 months, we have been discussing fault locating in the copper infrastructure with a multifunction test set. Based upon these columns, I’ve received several questions about using specific test set functions. In this month’s column, I address several of the most frequently asked questions, including: • How does the test set convert ohms to feet or meters? • How does temperature affect measurements? • How does the test set account for gauge or temperature changes? Converting Ohms to Feet or Meters When converting linear wire resistance from ohms…

A Sad Shift From Quality to Quantity

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By guest writer Daniel Burch — The column this month was penned by Dan Burch with Tescom, a company respected for a 35-year history manufacturing quality test equipment targeting the telecom and CATV industry. Dan also has a long history in the industry as a technician and eventually in engineering management. This is a topic dear to my heart. Here’s Dan. “… Two roads diverged in a wood, and I — I took the one less traveled by, And that has made all the difference.” (Robert Frost, The Road Not Taken) There was once a time in the telephone business…

Cable Fault Locating and Repair

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Part 3. Understanding Crossed Battery and Your Advanced Test Set Features — To recap, for this 3-part series on Cable Fault Locating and Repair, in the June issue we ran Part 1 providing a review of short-term versus long-term approaches. In the July issue, with Part 2, I provided processes I employ and teach to help technicians integrate advanced fault locating techniques using longitudinal balance and other functions of a multi-function test set. In this month’s column, the final part of my 3-part series on evidence-based best practices for Cable Fault Locating and Repair, we consider the complex topic and…

Cable Fault Locating and Repair

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Part 2. Identifying a Faulted Pair — In my previous column (Part 1 in the June 2020 issue), I discussed the evils of the fast, easier “cut to clear” solution when repairing a faulted cable. This is a short-term fix that will cost more in time and resources eventually as you run out of pairs. I also provided a bulleted process for qualifying a cable pair as “good.” In this month’s column, we look at using your test set to explore longitudinal balance as one of the elements that help identify a faulted pair. Additionally, I will provide the process…

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