开云体育

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Saturday, April 20, 2019 1:12 PM
To: [email protected]
Subject: Re: [TekScopes] Searching for a Tek 7000 series scope

I wanted to thank everyone for their replies, direct emails, and
advice. After consideration of many kind offers, I ended up purchasing
a 7904A + plugins from John Griessen. It arrived yesterday! Absolutely
thrilled with it.

/g/TekScopes/album?id=89735

I think the next thing I need to find is a scope mobile cart for it to
free up bench space. :o)

Sean

Point is, they had a lot of floor space.

Your lab may not.

Mine doesn't, so my scope cart is sitting elsewhere waiting for a
larger lab.... (one day).

On Apr 20, 2019, at 16:12, [email protected] wrote:

I wanted to thank everyone for their replies, direct emails, and advice. After consideration of many kind offers, I ended up purchasing a 7904A + plugins from John Griessen. It arrived yesterday! Absolutely thrilled with it.

/g/TekScopes/album?id=89735

I think the next thing I need to find is a scope mobile cart for it to free up bench space. :o)

Sean

On Apr 20, 2019, at 17:05, Harvey White <madyn@...> wrote:

On Sat, 20 Apr 2019 13:12:15 -0700, you wrote:

I wanted to thank everyone for their replies, direct emails, and advice. After consideration of many kind offers, I ended up purchasing a 7904A + plugins from John Griessen. It arrived yesterday! Absolutely thrilled with it.

/g/TekScopes/album?id=89735

I think the next thing I need to find is a scope mobile cart for it to free up bench space. :o)

I have a scope mobile cart that will hold a 7000 series scope (no, not
for sale).

Some observations: The scopemobile was designed to be a roll around
home for a scope in a lab/facility that had a lot of bench space. The
typical electronics bench of the time was a workbench maybe 35 to 40
inches deep, relatively high off the floor (people used stools), with
a single shelf about 2-3 feet above the workbench.

You'd put instruments, etc., on that shelf. However, given the depth
of the average 7000 series scope (and that there'd not likely be one
for each technician, either), the scope would not sit on the bench.
Hence, the scope cart with plugins, TM500/TM5000 stuff, etc.

Point is, they had a lot of floor space.

Your lab may not.

Mine doesn't, so my scope cart is sitting elsewhere waiting for a
larger lab.... (one day).

Now, as far as my arrangements go, and you may want to consider this,
I use the roll around wire shelves, 4 feet wide, 2 feet deep, 6 feet
or so high, with six shelves (not all necessarily used). You *really*
want the kind that does not have that little helpful basket shape, you
want the kind where things could roll off, with the flanges down.
(BJ's wholesale seems to sell on the turned up type, good for boxes
and bins, not so hot for test equipment.

I took a power strip and bolted it to the back of one of the shelves.
I took a closet flourescent lamp and bolted it to the back of the top
shelf. Saves needing a flashlight.

I then went to the local Home Despot and bought a sheet of 4x8 1/8th
inch masonite (brown particle board to others, but without the holes).
I had them cut it into sheets that exactly fit the top of the shelves,
closing off the wire holes. Now everything with feet doesn't catch on
the shelves.

One of those shelves is an inch or so off the main workbench surface,
and behind it. The 7000 series scope rests on the back of the shelf
and with the bail down, is at a slight angle when resting on the
workbench.

This works for me. Striplights on the shelves for background lighting
on the bench, outlet strips below the bench, and so on.

You may not use that scope cart as much as you might think, depending
on your lab layout.


Harvey

Sean

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Saturday, April 20, 2019 1:12 PM
Subject: Re: [TekScopes] Searching for a Tek 7000 series scope

I wanted to thank everyone for their replies, direct emails, and
advice. After consideration of many kind offers, I ended up purchasing
a 7904A + plugins from John Griessen. It arrived yesterday! Absolutely
thrilled with it.

Sean

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Saturday, April 20, 2019 1:12 PM
Subject: Re: [TekScopes] Searching for a Tek 7000 series scope

I wanted to thank everyone for their replies, direct emails, and
advice. After consideration of many kind offers, I ended up purchasing
a 7904A + plugins from John Griessen. It arrived yesterday! Absolutely
thrilled with it.

/g/TekScopes/album?id=89735

I think the next thing I need to find is a scope mobile cart for it to
free up bench space. :o)

Sean

Hi Sean,
OK, I looked at the pictures. The third picture really caught my attention!!!
My first reaction was "This is not possible". The bandwidth must be so far
down at 2GHz that you would barely get it to display that at one or two
divisions of vertical no matter what you did.

What I don't understand is what you had to do to get that 2GHz sinewave on the
screen of a 7904A with a just a 7A19. Also how hard was it to get the 7B15 to
trigger at that frequency? One last question: What was your signal source?

My complements to you for whatever you did to get your new scope to do that.
Everybody should sit up and take notice of what a 7901A can do. It would be
even faster with a 7A29 in it. You are certainly capable of putting this scope
to very good use.

Dennis Tillman W7PF

Ah, now, based on my lab:

1) PC board fabrication, about 5 feet by 2 feet.
2) DC calibration (one rack and desk space)
3) RF work, maybe the same
4) Digital (main focus), about 4 feet worth of space)
5) Scope calibration (2 feet, often borrowed)
6) miscellaneous (borrowed, you decide)
7) PC board assembly and desoldering (4 feet)
8) plugin stack and tool chests (4 feet)
9) place to sit (3 feet) (!)

10) door (needed one of them somehow)
11) window (etc...)

You're getting the idea....

Labs automatically expand to 2x the available space.....

Harvey

I think the next thing I need to find is a scope mobile cart for it to free up bench space. :o)

I have one of my 7704As on a K212 scopemobile,