I think the question is more about the input testpoint, on the older ISX2 and ISX3 node boards. The input testpoint requires the TPA-2 testpoint adapter. Using an F81 barrel is essentially double-seizing to the signal path, causing impedence mismatches and inaccurate readings.
The newer 3030 and 3040 series nodes have the built-in -20dB testpoints in the board.
Here's a couple of links to references:
http://www.4cable.tv/TPA-1.html
http://www.otsecure.net/weeks/TestEquipment/RF/Test%20Probes/test_probes.pdf
I have some PDFs on these nodes, and I can send em if you message me your email.
Re: Homeworx Node information
Member #: 19319
Registered: 1996-2001
Posted:
143
Name:
Lorne
Company:
major MSO (3rd namechange in 5 years)
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Lead System Tech
Location:
Virginia
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60-ish
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~31 years
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