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| py-bb:
--- Quote from: Bud on January 25, 2023, 09:25:48 pm ---It may not be useful to you, because it was a custom design and would not be supported by the usual computer side software and libraries. I wrote my own for it. And the PIC on the board had a custom firmware that handled communication with only a few old HP instruments that I had at the time, it was not a generic adapter. --- End quote --- It may still be please! I have some LeCroy stuff and software I wrote with serial ports, not realising that it takes 700 seconds to dump all the channels at the thing's top baud rate - so... I'd really love a look |
| MrYakimovYA:
--- Quote from: Vgkid on January 26, 2023, 09:45:09 am ---That looks nice. I had plans for a similar idea. Pics of the internals. --- End quote --- A bit of horror is inside. As I said earlier I'm testing it. And I'm collection a bunch of notes what to fix. A lot of wires, for example, must be tied to each other with a nylon tie. Some solder connectios are a little ugly. And I'm going to replace 100 kOhm and 1 MOhm decades with a more stable S5-60 (с5-60 in Russian) resistors instead of MRH (МРХ in Russian) type. I'm awaiting them via the post from another city. |
| jasonRF:
This is a ~6 dB, ~5 MHz amplifier I built with selectable 50 Ohm or "0" Ohm output impedance. I originally designed it to use with the 100 kHz signal generator built into my Picoscop 2204a, which has a 600 Ohm output and is limited to +/- 2V output. It is AC coupled on input and output and is almost exclusively used for sinusoids. My original design used opamps and would have been simpler and better, but this was more fun :) jason |
| MrYakimovYA:
--- Quote from: jasonRF on January 29, 2023, 12:39:53 am ---This is a ~6 dB, ~5 MHz amplifier I built with selectable 50 Ohm or "0" Ohm output impedance. --- End quote --- Nice work! It looks so nice! Could you tell me what is its noise level? |
| Bud:
--- Quote from: py-bb on January 27, 2023, 10:59:26 pm --- --- Quote from: Bud on January 25, 2023, 09:25:48 pm ---It may not be useful to you, because it was a custom design and would not be supported by the usual computer side software and libraries. I wrote my own for it. And the PIC on the board had a custom firmware that handled communication with only a few old HP instruments that I had at the time, it was not a generic adapter. --- End quote --- It may still be please! I have some LeCroy stuff and software I wrote with serial ports, not realising that it takes 700 seconds to dump all the channels at the thing's top baud rate - so... I'd really love a look --- End quote --- I made mine in 2012, here is a link to the author's web page, seems he released several updates since then. But he said the speed is 57600 baud. http://dalton.ax/gpib/ |
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