9 Apr
2005
9 Apr
'05
6:33 p.m.
On Sat, 09 Apr 2005 11:52:08 +0100
Philip Pemberton <philpem at dsl.pipex.com> wrote:
In message <m1DK4GO-000IxtC at p850ug1>
ard at p850ug1.demon.co.uk (Tony Duell) wrote:
Bench power supplies from Kepco or Harrison Laboratories (later
purchased by HP, so if you've seen a Harrision supply, you know what the
'good' HP supplies look like)
Solartrond DVM manuals (and the manual for the
DTU [1]) contain
schematics, or at least the oens I have do.
Not this one. From what I can tell, there's an Operation Manual (P/N
71500024) and a Maintenance Manual (P/N 71500026 or 7150026 depending
on which part of the manual you read), which is listed as an "Optional
Accessory" in my ops manual.
On the plus side, the ops manual does include the calibration
instructions. I don't have a copy of the calibration overlay for the
keypad, but there's a 1:1 copy of it in the manual anyway. The
calibration jackplug is a bog-standard 2.5mm mono minijack that's had
the tip line wired to the barrel(i.e. dead short).
That was quite common at one time. DEC PDP11 and
PDP8 manuals often
included ROM dumps, flowcharts, state diagrams, and so on. These
machines wre _documented_
Seems the late 70s/early 80s was the timeframe when this was common.
I've got a 1992 HP 1651B service manual and it's just a boardswapping
guide. Not even any parts lists for the individual PCBs - just a list
of boards and how to remove them. There's not even any info on
calibrating the acquisition timebase (I suspect it's calibration-free
- a crystal oscillator or something).
My Tek 466 manual (circa 1986) covers everything - schematics,
waveforms, calibration, parts lists for every individual part on every
PCB, microcode, performance checks...
"Scopes from Tek, spectrum analysers and logic analysers from HP,
multimeters from Fluke"
Not sure about bench PSUs, I tend to build those myself, but I've got
a Farnell Instruments L30/BT here (my 5A DIY PSU went bang - cheap
components never last very long).