Phil M0OFXDec 16
And now my Philips PT5230 analog-digital test pattern generator has a clock and a time code input! #analogcable
Phil M0OFXJul 22, 2025

Never in a million years did I imagine I'd end up with a copy of the GI ACC-4000 cable headend controller manuals.

Anyone got a copy of the Message Editor or OSD Edit install disk or executables?
#analogcable

Phil M0OFXDec 21, 2024
Seems like I accidentally found out which Pascal compiler General Instrument were using for the ACC-4000 software.
Oregon Pascal - for Interactive Unix/Xenix on the 80386.
https://groups.google.com/g/comp.lang.pascal/c/sxHYa0Qx-VM/m/-u26L7t1wnUJ
#AnalogCable
HELP, Need to locate Oregon Software

Phil M0OFXDec 11, 2024
I'm getting way too deep into this #AnalogCable business. I just bought a pair of Avitech Rainier multiviewers. The best part is they can cascade, and the video-out is DVI-I for convenient connection to a cheap LCD monitor :D
Phil M0OFXNov 6, 2024
Hooked the #AnalogCable headend to the Belkin IP-KVM, and now I really want to turn this Java applet (and the one for the IDRAC) into little C programs which translate between VNC and the arcane Raritan/IDRAC RFB protocol.
Actually, maybe they should be little Rust programs.
Phil M0OFXNov 4, 2024
The #AnalogCable headend has finally finished clearing out its database ... it seems like the ID numbers went up almost as far as they could, and the cable company didn't remove a box until it was issued to another customer. Tons of disconnected and faulty boxes. It's taken nearly a week to run, ugh.
Phil M0OFXNov 4, 2024
Hooray, another #analogcable box - and with OSDs loaded too :)
Phil M0OFXOct 13, 2024
This is making it easier to figure out how the #analogcable headend protocol works. Seems like the line idles low until the ANIC's Xilinx code initialises - then it transmits some kind of idle signal. Then the ANIC software loads and it starts transmitting what appear to be FF bytes.
Phil M0OFXAug 30, 2024
Welp, I think the #AnalogCable headend PC is going to need one of the ISA slots replacing ... I found some on ebay, how hard can it be? ™️
Phil M0OFXAug 16, 2024

I've been having a think about how to do return-path on my #AnalogCable setup. That led me to an auction listing for a bunch of rackmount combiners, one marked "FORWARD COMBINER" and the other marked "REVERSE SPLITTER". [1]

That got me thinking, how do you split the two apart? A directional coupler may be a way to do it, but it's lossy and there's an easier way... the frequency bands are separate, so a diplexer (fancy name for a bunch of filters) is enough.

1: https://www.ebay.com/itm/143536319504

Lot 4 General Instrument HC-8X Jerrold HeadEnd Splitter / Combiner | eBay

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