[TekScopes] Fast Rise/Fall Time Pulser

Larry McDavid All Messages By This Member #86138 Mine arrived today. Alas, it uses a USB B connector instead of a more common USB mini or micro; I gotta get a cable. Mine has the comparator IC marked only, "AJK BAA." Yes, this is an Analog Devices ADCMP572 or ADCMP573 Ultrafast SiGe comparator. I'm not sure which output configuration is used yet, but likely is the 572 with CML output drivers. The controller IC is a 18F25K50 PIC with integral USB. Level programming software is available on the Leo Bodnar website for download. The board was supplied with a test result data sheet from a Tektronix CSA803A (website picture shows a SD30 40 GHz sampling head used) showing the pulser rise time as 38.91 ps and the fall time as 33.20 ps with about 950 mv P-P. It's a lovely looking board; lots of thought went into the layout. I can't tell if it is multi-layer. Now for that B cable... Larry toggle quoted message Show quoted text On 10/10/2017 12:19 PM, Larry McDavid lmcdavid@... [TekScopes] wrote: There has been discussion recently about generating fast rise/fall time pulses by various means. Here is a link to a Leo Bodnar device that will provide <40 ps rise/fall time, 50% duty cycle, 10 MHz pulses: This is built on a small PWB with integral BNC connector, powered by 5 vdc through a USB B connector; a trigger output is provided. Price is US$68. I've ordered one of these for testing. Is anyone here using one of these? -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland) -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland) -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland)

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[TekScopes] Fast Rise/Fall Time Pulser