- CableLabs
- CableTV.COM from Jonathan
Kramer
- Cable Addict's Broadband Lounge
Rick Goldeck
- Cable Television Connect
- K.C.'s Cable
Shop
- Cable
TV Resources from the Catalan Institute of Technology (Spanish)
(The Catalan
Institute of Technology is a non-profit-making private institution
providing
advanced technical services with the object of enabling companies and
professionals
to adapt to the technological change to improve their competitiveness.)
- Cabling
Contractors Directory (find contractors and installers
geographically)
- Calculators
- CNR,
SNR & MER White Paper by Ron
Hranac Jr. of Cisco and Bruce Currivan of Broadcom
- Columbia Institute
for Tele-Information
- Connecting
Homes to the Internet: An Engineering Cost Model of Cable vs. ISDN
from MIT Lab for Computer Science
- Diggers
Hotline before you dig in Wisconsin
- EECOMP Collection of
useful
software from Roy Ehman VE6EV
- (The) Fiber Optic
Marketplace
- Frequency
Plan: PAL B for India (thanks to General Instruments/Motorola)
- HFC Broadband (a site
by Mike Gibson)
- HUKK's training
resources
- Lennie Lightwave
(fiber
optic guide)
- Map Advance, Understanding, by John
Downey (Cisco) as a Web
page, Word
Document and Excel
Spreadsheet
- NCTA (National Cable Television
Association)
- National Cable Television
Center and Museum
- National
Electrical Code from the National
Fire Protection Association
- National
Electrical Safety Code from the IEEE
- Nerd
World:
Television
- Nu Horizons Engineering
Related Links
- Pay TV Online
- Pogenostics Poge
Smit's Web Home
- Return Path Field
Training (Powerpoint slides) from Fawad Faheem
- Ultimate TV
- Telecom Forum
- Optibeat
(software to calculate cable television beats)
- Power
Measurements on DOCSIS Downstream QAM Signals (Portable Document
Format, for free reader, go to Adobe
Acrobat site)
by Jerry Archambault jerry.archambault@arrisi.com
- Root
Raised Cosine Filter and Raised Cosine Filter
Excel spreadsheet by Jerry Archambault jerry.archambault@arrisi.com
- The
Telecommunications Casbah
- Sams Oregon Reference
- WebOvision (media
links: radio, television...)
- Telecommunications
Information A large, superb collection of links from David Blight,
Dept of Electrical and Computer Engineering at the University of
Manitoba.
- The
Information Economy by Hal R. Varian
- The World Wide Web Virtual Library Communications &
Telecommunications Section
- Siam Communications Group
(see the Broadband Link Exchange)
- Upstream
Level Calculator
[this calculator is an Excel spreadsheet written by Marc Belland
<mbelland@riverdelta.com> (of RiverDelta Networks), based on
formulas in a message by Ron Hranac (of Cisco Systems), in response to
a query by Steve Wilson (of Harmonic) on SCTE-List.]
Here are the formulas to convert from dBmv/carrier to
dBmv/hz:
First, you need to know the total power and operating bandwidth.
From this,
you can convert this information to power per Hz. Let's say you've got
an
upstream laser that is spec'd for a total input power of +40 dBmV, and
the
upstream bandwidth is 37 MHz (5-42 MHz).
Power per Hz = total power - 10log(bandwidth in Hz)
Power per Hz = +40 - 10log(37,000,000)
Power per Hz = +40 - 10(7.5682)
Power per Hz = +40 - 75.682
Power per Hz = -35.682 dBmV/Hz
>From this, you can calculate the power allocated to each
channel carried in
the upsream with the following formula:
Power per channel = power per Hz + 10log(channel bandwidth or
spacing in Hz)
So, if you're transmitting a 1.6 MHz QPSK carrier, its allocated
power at
the
laser input would be:
Power per channel = -35.682 +10log(1,600,000)
Power per channel = -35.682 +10(6.2041)
Power per channel = -35.682 +62.041
Power per channel = +26.36 dBmV
****************************
Marc Belland
- Jim Kuhns Satellite
Software (early
picture of Jim) (more
recent pic)
- Report on Dynamic CPD (common point distortion) by Barry
Patel Bharat.patel@teleste.com
- cpd2.doc
via hyper-text transfer protocol (http) - In Microsoft Word Format;
Caution: Large
document- over 5 MBytes
- cpd2pg5.doc
via hyper-text transfer protocol (http) - In Microsoft Word Format;
Caution: Large document - over3 MBytes
- cpd2
in HTML format (read directly with browser); Caution: Large document-67
KBytes
- cpd
Page 5 in HTML format (read directly with browser)
- cpd2.pdf
(in Adobe
Acrobat Portable Document Format, courtesy of Marc Belland)
- Open Cable
Presentation by Chris Dickoff Dickhoff.Chris@tci.com (Large
file:8,015,360 bytes)[fixed]
- Open Cable
as a 5,893,704 byte Zip file
This is a Office 97 presentation. It is appx 7.7 MB in size and has a
large audio content. It was written as a scripted presentation, so I
would recommend that you print the notespages first, then run the
slideshow in manual advance while reading the notes. Make sure you use
a PC with a sound card.
If you are a member of the FCC please don't take the John
Lithgow sample
personally. The line got a good laugh when I did my presentations.
I would appreciate any feedback (positive or negative) you have
regarding content, style, or whatever. I only can improve with
feedback.
Enjoy;
Chris Dickhoff
TCI of Plano
1414 Summit Ave
Plano TX 75074
dickhoff.chris@tci.com
- Reverse
Combining Network Drawing (as a gif file) (as a PowerPoint
file) from Joe Thomas Joe_Thomas@3com.com
- From Mark Millet of Cisco:
- From Dave Devereaux-Weber:
- These files were written in the 1980s for Lotus Symphony;
Microsoft Excel can read the files if you install the additional
translators from the Office CD
- cascade2.wr1,
a Symphony spreadsheet to calculate cumulative noise and distortion on
a cascade of amplifiers (11/17/1986).
- cli7.wr1,
a Symphony spreadsheet to calculate Cumulative Leakage Index (CLI)
(6/24/1990).
- compare5.wr1,
a Symphony spreadsheet to compare different amplifiers based on their reach
(2/14/1987).
- level7.wr1,
a Symphony spreadsheet to calculate optimum output levels based on
desired noise and distortion (2/14/1987).
- micrpth4.wr1,
a Symphony spreadsheet to calculate optimum antenna height for a
microwave transmisson path (2/23/1988).
- Written in Microsoft Excel
- slope.xls,
an Excel spreadsheet to calculate levels on every channel given the
output level and slope (December 1999).
- Telecom
Digest archives and reference material from one of the oldest email
lists on the Net
- Telecom
Information Resources Very good telecommunications reference site
list by Jeffrey MacKie-Mason
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