5 Oct
2015
5 Oct
'15
1:02 p.m.
-----Oorspronkelijk bericht-----
From: william degnan
Sent: Monday, October 05, 2015 8:59 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: PDP-11/10 repair started
What are the DC LO and AC LO values off the backplane? Do they change when
you insert the CPU card. (one at a time).
--
Bill
vintagecomputer.net
=========
I measured AC LO and DC LO with a scope while both CPU boards are in
the backplane. Both measured 4.6 V, there was a ripple of 130 mV
(looked like a sawtooth signal). I did not see spikes.
- Henk