Re: HP 141T Power Supply Help Needed
That display is normal for an 8553B in FULL SCAN mode. The dip is the marker that indicates the center frequency. Dave Wise ________________________________ Sent: Thursday, September 19, 2024 4:47 PM
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Dave Wise
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#147294
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Re: Probing deep and/or narrow into a given unit for troubleshooting
Depends on what the design is: If I design it, I put in test points or small (0.05 inch) headers for logic analyzers (ditto for the cheapie clones).? Some boards have 0.1 inch headers that go to HP
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Harvey White
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#147293
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Re: Introduction
Yeah, I've been thinking of a zero crossing and filtered and shielded and low frequency switcher supply to make and sell for LEDs in labs. The usual products are designed for "don't care" how much
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John Griessen
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#147292
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Re: Introduction
Never used it, so... wasn't available for what I was doing. Harvey
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Harvey White
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#147291
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Re: Introduction
Use multi-color LEDS positioned so that you can get light on front panels but not glare on scope screens. Harvey
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Harvey White
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#147290
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Re: Introduction
Warm and friendly includes a well lit recliner and a table for a cup of coffee or tea. Harvey
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Harvey White
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#147289
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Re: Introduction
Emacs!
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Dave McGuire
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#147288
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Re: Introduction
Unless you like VHDL...... <grin> Harvey
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Harvey White
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#147287
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Re: Introduction
Argue that a master's degree looks like more highly educated employees. I have a Master's degree in EE, and do software as well as hardware. I'd suggest taking courses in both.? Depending on what you
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Harvey White
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#147286
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Re: HP 141T Power Supply Help Needed
Look at that. The only issue I see is that the display is upside down. I guess you need to flip it over. Humor. By the looks of it you have some signal. But your IF BW may be narrow. Typically with a
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paulswed
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#147285
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Re: Probing deep and/or narrow into a given unit for troubleshooting
I have done the tack-wires-on method many times too. A few nodes is easy to handle, with leads held safely with tape to keep from shorting. When there are lots, I usually use some kind of connector
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ed breya
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#147284
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Re: HP 5086-7906 YTO
Hi Adri, Yes, I am curious, you can send me a video on the intermittent noise problem, by going through OneDrive for example, or Dropbox. It could be that one of the PLLs is the cause. For the 8595E
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Yves Tardif
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#147283
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Re: Introduction
I agree with you completely. Over 50 awesome messages and a wealth of ideas. I also liked seeing the LED "mood" lighting and the flat screen monitors incorporated into some benches Jim
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Jim
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#147282
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Re: HPIB disk drive as a substitute for SRAM cards
Hi I'm not sure which driver you may be referring to so you might have to explain further. I did not format the card. It was borrowed and came with the attenuator cal files on it. It will be mailed
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Jim
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#147281
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Re: HP 141T Power Supply Help Needed
Oh. Hold on.
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Bill Berzinskas
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#147280
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Re: HP 141T Power Supply Help Needed
Mm that did something, not all the way but in a positive direction. In conv mode, I see something that looks like a horizontal scan but off screen. Out of curiosity I turned the vertical position
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Bill Berzinskas
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#147279
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Re: Introduction
As a general observation - how incredibly useful this conversation has turned out. As with just about any conversations here. All this is making me think and rethink my bench and workspace
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Radu Bogdan Dicher
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#147278
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Re: HP 141T Power Supply Help Needed
Just looked online and it is a storage tube persistence may be turned way up. Turn storage mode off
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paulswed
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#147277
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Re: Introduction
As for magnetic influence: keep your Rb reference oscillators away from magnetic fields. It probably does not show in everyday use but the Rb units are susceptible to magnetic fields. Wilko
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Wilko Bulte
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#147276
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Re: HP 141T Power Supply Help Needed
I think the 141T had a storage CRT and that looks like flooding. Thats when the storage gain typically on the front panel is too high. Not good to leave it that way for long. Paul WB8TSL
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paulswed
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#147275
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