¿ªÔÆÌåÓý

Date
Re: [TekScopes] Removing the Adhesive From Hell
This discussion (which is also on another list) is helpful. I have an antique microphone which had masking tape on part of the outside. The finish is crinkle black. I could never get the adhesive off.
By Richard Knoppow · #120235 ·
Re: Sample preparation for Impedance Analyzer
Peter, Here (
By pianovt · #120234 ·
Re: [TekScopes] Removing the Adhesive From Hell
Hot water is simply amazing. Masking tape is a problem child. Its mastic starts out sticky, then progresses to gooey, and ends up dry and crumbly. I find that masking tape lets go if it is allowed to
By Chuck Harris · #120233 ·
Re: Sample preparation for Impedance Analyzer
Those donuts have two O/D sizes but a selection of I/D for the holes Are these actually sample holders for the two sizes: 7mm diam x 20mm length 10mm diam x 20mm length (Outer Diameter and Inner
By peter bunge · #120232 ·
Re: [TekScopes] Removing the Adhesive From Hell
Heat makes solvents (like water... the so called 'universal solvent') dissolve compounds more completely. Yes... it's obvious; but, IMO it's underutilised, as a cleaning method. Just hot water and
By Roy Thistle · #120231 ·
Re: Sample preparation for Impedance Analyzer
Thanks Dave; I found an Operation Note for the HP 16091A Cavity test fixture. It does not explain how to use it. There are a couple of vague paragraphs in the HP 4191A manual (page 3-50 in mine) but
By peter bunge · #120230 ·
Re: 54615B Agilent Scope Amplitude Low When Measuring 120V AC
Robert makes a good point. Totally isolated equipment is safer for line voltage measurements. [email protected]> wrote: Jeremy Nichols Sent from my iPad 6.
By Jeremy Nichols · #120229 ·
Re: 54615B Agilent Scope Amplitude Low When Measuring 120V AC
A suitable probe is https://uk.farnell.com/pico-technology/ta044/probe-active-differential-hi-volt/dp/1667349 A simple accidential reversionof line and neutral with a standard probe will result in any
By Robert G8RPI · #120228 ·
Re: Help diagnosing 8593E possible YTO failure
I purchased a YTO from them and worked ok. I recommend to check the rest of instrument prior to change the YTO. This instrument perform a pll lock each sweep. If for any reason it fails a residual fm
By Patricio A. Greco · #120227 ·
Re: Help diagnosing 8593E possible YTO failure
Hello Nick, I've good experiences with testcalinstruments on ebay, also another colleague in our institute. Both YTOs we've purchased are running without any further issues - both of them are rebuild
By Dr.-Ing. Stephan Massner · #120226 ·
Re: Help diagnosing 8593E possible YTO failure
Vladan, Thanks very much for the input. I've driven the coil with a bench supply in current-limiting mode, but my supply just isn't accurate enough to avoid significant drift and noise in the YTO
By Nick Foster · #120225 ·
Re: Help diagnosing 8593E possible YTO failure
Nick, I don't see enough evidence yet to agree that the YTO is defective. You say that the noise comes in bursts and that it's FM noise. This is not typically how a failed YTO behaves. It may be bad,
By pianovt · #120224 ·
Re: Help diagnosing 8593E possible YTO failure
<patricio_greco@...> wrote: Thanks Patricio. Given that the problem occurs well before the synthesizers in the signal chain I'm going to go ahead and chalk this one up to a bad YTO.
By Nick Foster · #120223 ·
Re: Replacing missing button cap(s) - HP 339A
If the offer for a button does not work out, the HP part number for the button is 5041-0117 and the HP description is "Key Cap, Filter switch." It's a long shot but I have had success in the past by
By Tom Phillips · #120222 ·
HP 9100 9100b Calculator actual HP schematics and instrument logic-flow chart
hi, I found the following actual HP 9100b schematics and instrument logic-flow chart to be very helpful in troubleshooting the HP 9100b Calculator. { the actual downloads might take some additional
By gren · #120220 ·
Re: 8341A *restoration adventure*
RubenRubio - Yes it is a bit more difficult, but basic measurements can be easilly made with what you have - just be careful of the power levels. Based on the diagram you have shown, you need to set
By Bruce · #120219 ·
Re: Removing the Adhesive From Hell
Brad, I feel your pain on the dried masking tape adhesive, just be glad they did not use filament reinforced packing tape as that is 10x worse of a mess to deal with. I have seen where applying a
By Matt Patoray IMES · #120218 ·
Re: [TekScopes] Removing the Adhesive From Hell
If the part can withstand the heat, I've found that pouring/soaking in boiling water will help loosen some adhesives. I've used that recently on some residue on metal parts. Goo-Gone is my go-to but
By n4buq · #120217 ·
Re: Removing the Adhesive From Hell
I've used 3M surface mark remover: https://www.digikey.com/catalog/en/partgroup/mark-remover-8001/27728 To clean up equipment and it's worked pretty well. You need to wear gloves when you use it
By Eric Garner · #120216 ·
Re: Removing the Adhesive From Hell
I use a variety of methods and solvents. A very good one for masking tape is to tear up a paper towel and fold (2 layers) into a size a little larger than the tape. Saturate it with WD-40 and go away.
By Jeff Kruth · #120215 ·