Intensity ripple on Tek 465B

OK, I'm assuming you've found a way to heat the air first. I'm interested in this setup - could you elaborate?

In this case, it wasn't a matter of heat. It turned out that simply air flow made the difference since this occurred immediately after power on before anything had a chance to heat up.

If I had to provide heat, a blow dryer would have been my tool of choice :)

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Sam Goldwasser wrote in news: snipped-for-privacy@saul.cis.upenn.edu:

Note that your breath will have high levels of moisture in it,that could alter the conductivity of the thick-film elements,especially if the thick- film is dirty.

I used to use an ordinary hairdryer(folding travel style) at low heat,until one of the cleaning people stole it.(along with my TI-30 calculator)

a paper cone narrowed the air flow to what I desired.

Could be part of the effect. Anyhow, it is still stable today.

--- sam | Sci.Electronics.Repair FAQ:

Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.