Re: WTB 7L12 + S-6 + S-52

Bill (Doc) Courtright

Kyle,I am in a similar quandary. Awhile back when setting up a new bench space I powered up the 7623A that my 7L12 resided in and the MF supply went into tic mode. Pulled the SA and the MF came up fine with normal H/V PI's in. Found that the negative bipolar line was shorted somewhere deep inside the 7L12. Well it still sits on the shelf. I am betting on the typical shorted tantalum but to dismantle far enough to get to the module where it resides and re-assemble it properly close to calibration looks nearly impossible. I will take a chance some day.Bill

-----Original Message-----
From: Kyle Rhodes <ksrhodes@...>
To: TekScopes <>
Sent: Thu, May 23, 2019 1:53 pm
Subject: Re: [TekScopes] WTB 7L12 + S-6 + S-52

As luck would have it — I just plugged in my 7L12 and got the dreaded click of death...pulled the unit and it let the smoke out somewhere inside. Ugh!!

On May 23, 2019, at 1:42 PM, Jim Ford <> wrote:

I bet!  Not quite as much fun as my HP 8566, but I have to hope the 8566 doesn't crap out someday.  Might be nice to have a 7L12 or 7L18 as a backup.Still, I hesitate to use a Tek spec an 25 years after being forced to use one (a real PITA).  HPAK spec ans rule, IMO.  If it weren't for the space and weight I would have several 8566's.JimSent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Kyle Rhodes <ksrhodes@...> Date: 5/23/19  10:25 AM  (GMT-08:00) To: Subject: Re: [TekScopes] WTB 7L12 + S-6 + S-52 Yes, sorry, that was a typo — I also already have a 7L12, which is a lot of fun! :)> On May 23, 2019, at 1:11 PM, Jim Ford <> wrote:> > Hi, Kyle. I think you want a 7S12, not a 7L12.  7S12 is the TDR/sampler.  The 7L12, while a desirable spectrum analyzer plug-in in its own right, won't get you TDR functionality. Jim Ford Sent from my Verizon, Samsung Galaxy smartphone> -------- Original message --------From: Kyle Rhodes <ksrhodes@...> Date: 5/23/19  9:48 AM  (GMT-08:00) To: Subject: [TekScopes] WTB 7L12 + S-6 + S-52 Watching the CuriousMarc YouTube channel has me wanted to setup a TDR rigin a bad way...I'm interested in purchasing a 7L12 along with a pulse generator andsampling head, such as the S-6 and S-52.I see a complete setup on eBay, but it's being sold as-is / untested.  Idon't really want to risk that -- I'm going to presume it was tested, andis bad...Any help in finding a setup is appreciated!Thanks,Kyle> >

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