In message <20060402145856.34512.qmail@web34308.mail.mud.yahoo.com>
          kravnus wolf <kravnus@yahoo.com> wrote:

>     What do you think of TDS 1000? Any good things
> about it? It will be the biggest investment I would
> have for my electronic hobby.

I haven't even seen one, let alone used one... I'm looking for a DSO myself,
but I don't have a great amount of money to spend. To be honest, I'm toying
with the idea of building a homebrew DSO and an arbitrary waveform generator
to go with it. Aiming for about 250MHz analogue bandwidth with a 60MHz samp=
le
rate (unless I can get some faster RAMs and some decent FPGAs).

>     I am very tempted in getting FLuke 187! What is
> your feedback?

Again, I've never used one, but if it's anything like my 25 then it'll be a
good investment.

I've got PDFs of the service manual, service manual supplement and operator=
's
manual for the Fluke 25 and 27 DMMs here - Fluke wanted over =A3100 just for
the service manual, but a T&M dealer put it up on their website for free
download :)

I've also got the Operator's Manual for the Schlumberger-Solartron 7150plus
bench DMM, and the Service Manual for the 7150. I suspect the 7150 and
7150plus use the same circuitry though... it certainly wouldn't surprise me.

The 7150plus is a fantastic little bench meter. True RMS, four-wire
measurement, GPIB, 4 to 6 digit display (read: it's got an averaging filter)
and a really big, easy to read LCD. Just watch out for the power filter
modules - most will be about 20 years old, and it's at that age when they
tend to suffer from sudden, catastrophic failure. RS have the filter module=
s,
and I'd be tempted to replace it on any 7150 I get that hasn't had it
replaced already. Problem is, they're about =A330 a pop and second-hand 715=
0s
tend to sell for around =A360 to =A365.

Next on my "to build" list: a bunch of digital test instruments with PC link
support. I have yet to find a DMM that can read down to the microamps range
properly, so I plan to DIY one. Am I mad? Probably.

The plan is to have a 9-bit opto-isolated multidrop bus for the PC link with
a USB adapter pod and Bulk Transfer mode. I intend to use host-initiated
transfers so I don't have to play with interrupt-mode or isochronous transf=
er
modes. Full specs when I can be bothered to sit down and write them up.

-- =

Phil.                         | Kitsune: Acorn RiscPC SA202 64M+6G ViewFind=
er
philpem@dsl.pipex.com         | Cheetah: Athlon64 3200+ A8VDeluxeV2 512M+10=
0G
http://www.philpem.me.uk/     | Tiger: Toshiba SatPro4600 Celeron700 256M+4=
0G
-- =

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