Thanks for the mention Dennis and your efforts as a moderator. I've really enjoyed being a member of this group and look forward to the daily digest I receive. The knowledge and helpfulness of the

Charlie, Well, I have SCSI adapters galore, and an operating PC running Windows 98, necessary for operation of a legacy DSP analyzer (PC bus hardware). So, I have a system that could PROBABLY work

It only uses SCSI. At the bottom of the WIKI here is a link to guy who has sorted out the OS issues and fixes for them. It is a mixed bag but free is a very good price. It has basically the same

Looks like an interesting bit of hardware. Does it use all three interfaces to communicate with the PC (as listed in the wiki)? or just the SCSI: " Adaptec ASPI SCSI driver is required for the

Double checked, followed the foil, Channel 2 is definitely on pin 1. I got the power supply board out right now so it's definitely going to see some new caps. I'll also take a real close look at

I just found one, maybe two, complete TWD120's while unpacking after a move. These had been missing for years. These are 100 Mhz 2channel Digital Storage Digitizers originally made for GE medical.

Hmmm. Mine shows I joined 09/30/03 (Account -> Identity - Account Profile). I must've been a lurker for a while. Thanks, Barry - N4BUQ

Oh. Duh. The date is on the “personal” under “Account Settings”.

I searched for my member ID. Apparently I joined on or about April 7, 2004. I smile when I see that I asked my first Tek question and the second reply was from none other than Stan Griffiths. Then

Is there a way to figure out when one joined the original (Yahoo groups) list? DaveD

Thank you, Dennis, for moderating!  A very informative and enjoyable group, for sure.Jim Ford, member since late 2016 or early 2017 (can't remember exactly)Sent from my Verizon, Samsung Galaxy

Hi Paul, I think the "official" method is: set the 7B87 for single sweep [and wait until the Ready light is off], then press AQS at the 7854, then activate the 7B87 again by pressing the single

wrote: As an aside, love the pics of the warm green glow of the CRT :).

Uh, this makes no sense to me. The base of Q870 should be pulled toward +15V unreg through R864(? hard to read on the schematic), and the two op amps shunt it towards ground when they detect too high

I had actually done that last nite, but didn't have the parts layout handy to see which probe was on which pin (I had them on the diodes>. Here they are with voltage

Michael Dunn started TekScopes 20 years ago on August 31, 2000. There was just one post that day from Walter Shawlee who joined that same day and he has been an active member ever since. To Walter:

Here is a shot of both sides of R873 on the 2430A. At power off, both I guess next up is to capture U870 pins 1 & 7, see what's up there when your rail collapses. On one hand, you could be hitting

Hi Colin, If the contact is not one of the ones dedicated to providing power or connecting to the pass transistors then it may never get used and you can put a note on the top of the TM504 saying that

Hi Albert - Are you doing single-sweep Acquisitions with the 7B87? Single-sweep uses the 7B87's internal sample clock, and I just checked on mine and confirmed that at .5mS, the acquisition works

I have a TM504 which has one of the springy brass-coloured contacts on the back-plane mangled. I have tried removing one of these contacts from a spare back-plane connector with no success - they just