I love electrical tape! I use it on everything and I have every color (even the
specials). I use it to wrap every cable and wire I see, even those of
neighbors, and with its great insulating properties I made my entire roof of it
(and if you cover your car in it, it makes a great theft deterrent!). If it
gets sticky, it just means you need another layer.

Peter


On 5/15/2016 4:12 PM, Stefan Trethan stefan_trethan@gmx.at [TekScopes] wrote:

You want to know what really gets my goat, electrical tape.
Don't you just love it when someone has tied a coil of cable or scope
probe lead with electrical tape, so you have a disgusting sticky mess
every few inches?

There should be a law against electrical tape. The factories should be
destroyed immediately and only a few boxes of 3M 33 should be kept
under armed guard in a high security vault, for use in exceptional
circumstances, like the outbreak of war.

At work we have an overabundance of this yellow polyester tape for
coil winding, and obviously it gets used where it shouldn't be. The
tape itself doesn't hold up all that well, but even after it has
fallen off the glue remains. Hardened to a dry crust and now
impervious to any solvent known to man it is the most hideous thing
you can imagine. Sometimes I feel like I have spent half my working
life removing yellow stains.

ST

On a tangent, I just updated the firmware on my new-to-me HP 54622D. The
hard part was to scare up some way to write a floppy - I had to resurrect
an ancient ThinkPad laptop with an external floppy drive to get the job
done. That thing is so old, it was refurbished when I got it some 13 years
ago :). I'll be buying myself a USB floppy drive, if only just to make sure
the next time this happens I can read and write a floppy from one of my
current machines - *sheesh*.

In any case, updating the firmware from 1.50 to 2.31 netted me some
bugfixes, a 5 digit hardware counter, and a bunch of triggering options,
including USB - if I'm reading the release notes right. This scope seems to
predate the notion of software options. In the firmware release notes
there's a decent list of features and triggering options that were added
with subsequent firmware options at no cost to the user.

Also, in playing with this scope for all of 20 minutes, it's eating my
TDS784D's lunch every which way from Wednesday in usability.
It always grabs the full memory depth, and then just blasts all the data
that'll fit at the screen at some 300 waveforms/second without ever slowing
down. It looks like the default is to show all the 2/4MS in 10DIVs, and
only at higher sweep speeds does it water down the data in the displayed
trace. I can turn on cursors, and FFT, and measurements, and counter, and
god knows what else, it just doesn't slow'er down the least bit.
By comparison, math or long record lengths will bring my TDS truck to its
knees, to where you have SECONDS of @!$% control lag to move cursors or to
pan the trace. Looking at any signal whatsoever with the TDS always seems
to turn this protracted negotiation between acquisition mode & length
versus display speed.

The HP has a beautiful roll mode that just works. This is nice to for
looking at slow events, particularly when it's backed by fairly deep memory
that allows you to zoom after the capture. Roll mode vanished at some point
in the TDS (d)evolution, for reasons that clearly have nothing to do with
usability.

At slow sweep speeds, the HP scope also displays the captured data as it
trickles in and overwrites the old data as the sweep wraps around. My
TDS784D gives me nothing to look at until it's damn good and ready with a
full acquisition record to show. This can take a while for slow sweeps and
extended acquisition - mine goes to 8MS as it has a long memory option.

The two features I might miss from the TDS scope are the delay timebase
(the HP only really has a zoom into the 2MS acquisition record, rather than
a hardware delay) and the segmented memory mode - I guess we'll see.

I'm guessing the introduction of MegaZoom is where HPAK started eating
Tek's lunch in scopes for realz?

On Sun, 15 May 2016 at 12:13 Sigurður Ásgeirsson <siggi@undo.com> wrote:

On Sun, 15 May 2016 at 11:23 Paul Amaranth paul@auroragrp.com [TekScopes]
<TekScopes@yahoogroups.com> wrote:

Siggi, I think you meant HP 54622D.

Too right - I seem to always manage to transpose the first three digits
anytime I try and type them out...

The only problem with the MSOs is that it is difficult to find them
bundled
with the logic pods for a reasonable amount of money. I have seen the pods
go for as much as the scope.

Yeah, waited patiently and eventually got lucky on one with the PODs.
However, if OP is happy with no digital channels, then buying without the
PODs, or else buying a 54622A or its relatives would be workable. "Not very
much money" seems to be on the order of $200 or so, these days: <
www.ebay.com/sch/Electrical-Test-Equipment/92074/i.html?_from=R40&_sop=2&_nkw=%28HP%2C+agilent%29+%2854622A%2C+54622D%29>.
I'll be surprised if these don't end up outlasting a Rigol by decades still
:).

[Non-text portions of this message have been removed]



------------------------------------
Posted by: =?UTF-8?B?U2lndXLDsHVyIMOBc2dlaXJzc29u?= <siggi@undo.com>
------------------------------------


------------------------------------

Yahoo Groups Links

The A input is a little weird. I am pretty sure it is the specific plugin because it does not happen on other plugins. The square wave looks distorted in some way. Picture:
Imgur: The most awesome images on the Internet http://imgur.com/Axg5dZn

http://imgur.com/Axg5dZn

After I tested the supplies and adjusted the -150 V, I tried to change the stability control on both A and B timebases. On A, when the control was turned (no matter which direction), the dot in the middle would flicker very brightly. On B, the dot was brighter to begin with but did not do the same flickering. I'm keeping the sensitivity down to prevent damage.

Hi all,

I have been at school and have only just now had the opportunity to get
back to the 545.


Dan, I checked all supplies again. These are the measurements I found:


-150 -> -150 V
100 -> 95 V
225 -> 226 V
350 -> 350 V
500 -> 499 V


I put the horizontal display in External Sweep mode. There is a dot on the
screen and it does respond to the 5x magnification. However, the sweep does
not move past the mid point of the screen. Imgur: The most awesome images
on the Internet http://imgur.com/iJvXHsM

http://imgur.com/iJvXHsM

Imgur: The most awesome images on the Internet http://imgur.com/iJvXHsM
Imgur: The most awesome images on the Internet.



View on imgur.com http://imgur.com/iJvXHsM
Preview by Yahoo




Tubes: I do have another 545A that is definitely out of service (something
sparked and caught on fire earlier). I can use tubes from there if need be.


Thanks,
Alex Brinister

[Non-text portions of this message have been removed]

I love electrical tape! I use it on everything and I have every color
(even the
specials). I use it to wrap every cable and wire I see, even those of
neighbors, and with its great insulating properties I made my entire
roof of it
(and if you cover your car in it, it makes a great theft deterrent!).
If it
gets sticky, it just means you need another layer.

Peter

On 5/15/2016 4:12 PM, Stefan Trethan stefan_trethan@gmx.at [TekScopes]
wrote:

You want to know what really gets my goat, electrical tape.
Don't you just love it when someone has tied a coil of cable or scope
probe lead with electrical tape, so you have a disgusting sticky mess
every few inches?

There should be a law against electrical tape. The factories should be
destroyed immediately and only a few boxes of 3M 33 should be kept
under armed guard in a high security vault, for use in exceptional
circumstances, like the outbreak of war.

At work we have an overabundance of this yellow polyester tape for
coil winding, and obviously it gets used where it shouldn't be. The
tape itself doesn't hold up all that well, but even after it has
fallen off the glue remains. Hardened to a dry crust and now
impervious to any solvent known to man it is the most hideous thing
you can imagine. Sometimes I feel like I have spent half my working
life removing yellow stains.

ST

On Sun, May 15, 2016 at 8:15 PM, jonbatters32@gmail.com [TekScopes]

I write because the sticky-labels have always driven me

crazy…..and have

been unable to come up with a fix….until NOW ! !

Jon Batters, Grants Pass, Or.

Sent from Mail for Windows 10

On 15May, 2016, at 3:17 PM, Peter Gottlieb hpnpilot@gmail.com [TekScopes] <TekScopes@yahoogroups.com> wrote:

I love electrical tape! I use it on everything and I have every color (even the
specials). I use it to wrap every cable and wire I see, even those of
neighbors, and with its great insulating properties I made my entire roof of it
(and if you cover your car in it, it makes a great theft deterrent!). If it
gets sticky, it just means you need another layer.

Peter

On 5/15/2016 4:12 PM, Stefan Trethan stefan_trethan@gmx.at <mailto:stefan_trethan@gmx.at> [TekScopes] wrote:Posted by: Peter Gottlieb <hpnpilot@gmail.com <mailto:hpnpilot@gmail.com>>

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