It *may* be possible in the 561 to put the time base in the LEFT or vertical slot. As i remember the one(s) I had long ago, this could be done. Two vertical plug-in's got you X-Y functionality.

There are 3 direct coaxial connections between the plugin bays, I assume for triggering. Given that the sweep works normally without a vertical plugin and none of the frame supply voltages are

Hi John, I'm sure that without my prickly remark, it wouldn't have turned up. Anyway, thanks for reacting. Have fun with the 1503B! Raymond

Hello Raymond, It has popped up once or twice, I did try it this morning and all it was finding was 1503c, just tried again and of course the b version turned up. Anyway Dale has sent me a

Ever heard of Google? User manual: https://xdevs.com/doc/Tektronix/TEK%201503B%20Operation.pdf For the SM, pay $7.50 to Artekmanuals.com for a high-quality scan. Raymond (with a wink to Dennis)

Several years ago I was looking for them for a friend. I found the ops manual, but that was before I began recording the URLs for manuals that I downloaded, so I do not recall its source. It is coming

Hello, Has anyone one got a user manual or service manual for a Tektronix 1503B TDR? I can find them for other models but not the "B" variant. Thanks. -- Best regards, John

Congratulations Michael. Several years ago I soldered new tiny double diodes in an S-2 sampling head. It worked, but what a mess I made of this, partly because lacking suitable solder tips at the

It is not just the Mostek ROMs that fail. My 7854 had the Motorola ROMs but still had ROM errors. I replaced the ROMs with EPROMs using an adapter PCB I had from a previous ROM replacement project.

Anyone who is interested. I built John Bennett's P2P Replacement for U225. It works fantastic. John's instructions are very detailed and leave nothing unanswered. The circuit was built on double

It looks like that if any progression is to be made, then help will be needed.

" and this for TDS5000B version: https://xdevs.com/fix/tds5000b/ which posted the whole restore CD contents" But his "DD" format can only be restored with a Linex program. I emailed him and he

I dont have any TDS5000 scope but i did a quick search and found this https://www.eevblog.com/forum/repair/help!-need-recovert-cd-for-winme-version-of-tds-5054/msg972011/#msg972011 you can unpack it

I see it zonked the email address... you can probably guess it but I called to order and that is probably the best option anyway. Hal

To purchase, either buy@... or 1-800-833-9200 opt 1. PN 063-3759-02 !!! NOTE: Prior to this I had to furnish my MB's BIOS version, unit serial number and such... my guess is this was both

Albert, True, but 151-0474-01 is shown in the TEK Crossover (See Pg. 9-13) as a "good" part number and one that conforms to 2N5947, which is indeed the die mark on my early unit. There are also

In hindsight I think to know what caused looping. I applied 576-E and C across the emitter resistor. The -22V tied to GND, but Q190-base still left "open". Then the base sees GND via parallel 2k7 and

Michael, I knew but thought that would be a die number. Now I found this die at Tekwiki! The sparse datasheet (D123 = 204-0707-90) merely says "Tek made NPN Transistor" and lists Pd, fT and Ccb.

This appears to have been overlooked: < https://groups.io/g/TekScopes/files/7854/7854%20ROMs.zip> in the discussion of 7854 ROMs ... David

*Chuck said * *Re: Which type of transistor is SG503 Q190 151-0614-00?* From: Chuck Harris