RS-170 was published by EIA, which has ceased to exist and seemingly all its documents have gone into the ANSI memory hole. But various papers and manuals over the years reproduced bits of it, so I can say it has a bunch of things that look familiar if you've ever looked at analog TV/computer signals.
Notably, it defines the receiver's load impedance as 75 ohms ±5%, and that the signal amplitude from the "blacker than black" blanking signal level to reference white is 1V ±0.05V.
Dave Anderson /
npub1mt…xwant
2024-08-03 03:25:18
in reply to nevent1q…9q7f
Author Public Key
npub1mtg38agwglttl7melxnfqphlm95uymnrdedw62h9j7cyquynza0szxwantPublished at
2024-08-03 03:25:18Event JSON
{
"id": "0f112cd77d265045fd3f40a44152d69f3095239e668a89bcaa33c392a31d2366",
"pubkey": "dad113f50e47d6bffb79f9a69006ffd969c26e636e5aed2ae597b0407093175f",
"created_at": 1722655518,
"kind": 1,
"tags": [
[
"e",
"e58561be276e411adaa014ed0981d9d1d18d7dd64dd78ce492261b728cdad9ca",
"",
"root",
"dad113f50e47d6bffb79f9a69006ffd969c26e636e5aed2ae597b0407093175f"
],
[
"e",
"2b2f4f27bee219c69e832d93e04d6e673ef6b64cbca69f0af6a1d04fab7816e5",
"",
"reply",
"dad113f50e47d6bffb79f9a69006ffd969c26e636e5aed2ae597b0407093175f"
],
[
"p",
"dad113f50e47d6bffb79f9a69006ffd969c26e636e5aed2ae597b0407093175f"
],
[
"proxy",
"https://hachyderm.io/@danderson/112895952071651866",
"web"
],
[
"proxy",
"https://hachyderm.io/users/danderson/statuses/112895952071651866",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://hachyderm.io/users/danderson/statuses/112895952071651866",
"pink.momostr"
],
[
"-"
]
],
"content": "RS-170 was published by EIA, which has ceased to exist and seemingly all its documents have gone into the ANSI memory hole. But various papers and manuals over the years reproduced bits of it, so I can say it has a bunch of things that look familiar if you've ever looked at analog TV/computer signals.\n\nNotably, it defines the receiver's load impedance as 75 ohms ±5%, and that the signal amplitude from the \"blacker than black\" blanking signal level to reference white is 1V ±0.05V.",
"sig": "f34ec19a8b46806c9451cc9ec8075cddbdf68eb8aa34da7021093a054441025b50ea7b5eec14e59ccf374ed7f214200a5f0f41514011b223830fe34a8cf7768a"
}