Re: 7B9-P Sweep


Chris van Lint
 

May be I should hold off celebrating until you have finished your experiment. A question which may be provocative, but is not intended to be so: Does the 7B90P work OK in equipment it was intended for?

Chris

----- Original Message -----
From: Dennis Tillman
To: 'sixtiestek' ; TekScopes@yahoogroups.com
Sent: Thursday, March 23, 2006 9:19 AM
Subject: [TekScopes] 7B9-P Sweep


I tried the 7B90P in a 7854 and I got a sweep but it was not right. It
seemed like it was sweeping at a fast rate with the X10 magnify turned on,
and with a very long hold-off of several seconds between sweeps. It
certainly wasn't useful. The front panel buttons didn't work. I'll try it
next in a 7603.
Dennis

-----Original Message-----
From: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com] On Behalf
Of sixtiestek
Sent: Wednesday, March 22, 2006 3:41 AM
To: TekScopes@yahoogroups.com
Subject: [TekScopes] Re: getting older

My 7B90P (S/N B031584) works in both my 7603 and 7854 as well as my
7912AD (with jumper removed) and is a very nice t/b, so maybe your
problem lies elsewhere (I made the P028 suggestion.)

I'm 65 outside and 25 inside. Learnt all about valves (tubes) in 1st
year at Uni - transistors crept in later, and I paid £25 for my first
thyristor - a 1Amp device!

Martin (Sixtiestek)

--- In TekScopes@yahoogroups.com, "Chris van Lint" <chrisvanlint@...>
wrote:
>
I recently enquired
> on this forum, whether the 7B90P could be configured to work in
manual mode
> i.e. without the GPBI interface. Someone pointed out that I should
short
> P028. I did and still there was no trace on my 7613. It took a while
> before the penny dropped after I looked at the TEK catalogue - the
7B90P
> apparently only works with the TEKTRONIX 7912 AD Programmable
Digitizer !




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