21 Oct
2016
21 Oct
'16
11:50 a.m.
On Oct 21, 2016, at 11:41 AM, Paul Koning
<paulkoning at comcast.net> wrote:
They exist in various DEC handbooks. I don?t recall which one had them.
The specs are fairly stringent in order to meet the max unibus bus lengths (my 11/40 is
close to max).
TTFN - Guy
On Oct 20, 2016, at 6:05 PM, Noel Chiappa <jnc
at mercury.lcs.mit.edu> wrote:
Where did you find those specs? I see a Unibus Spec on Bitsavers, but it doesn't
appear to mention the electrical specs.
From: David Bridgham
the right threshold voltage to meet the receiver
spec
The UNIBUS spec says the 4 crucial receiver parameters are input thresholds
(high and low), and the input currents (high and low); the crucial
transmitter parameters are the output low voltage (at 50 mA sink), and
the output high leakage current.