Post #1569269
2026-01-28 23:33 UTC
on the side of the 1402, normally covered by the grey side panels, is the customer engineering panel. it includes a dynamic timing analyzer--a gauge marked out in degrees that uses two spinning neon bulbs to indicate either cam timings or brush timings. we can check the holes punched in the 555 card to make sure they are arriving at the correct angle.
Replies (4)
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@tubetime@mastodon.social 2026-01-28 23:35
knobs and switches on the rest of the panel control which cams and which brushes the dynamic analyzer is to measure. it's almost like having a primitive oscilloscope built into the machine!
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@NF6X@oldbytes.space 2026-01-29 00:10
@tubetime It's so cool that the necessary diagnostic instrument is built right in! I'd imagine that the field service engineers appreciated not having to drag it around with them.
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@f4grx@chaos.social 2026-01-29 00:26
@tubetime woah this is beautiful! Spared no expense!
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@billiegrace@social.v.st 2026-01-29 14:17
@tubetime reminds me of the 1980’s fish finders so common in the southern US.