alleyvorti.blogg.se - Bnc adapter

Then the Discovery BNC adapter board could be used for fully differential measurements. IMO it would be better to provide 4 sockets for scope probes, with each connected to one of the differential inputs, and all the scope shields returned to Analog Discovery ground. However, if you're going to do this you should at least warn users about what you've done. I can see that grounding the negative inputs could make sense, in that it makes the analog inputs behave more like a conventional oscilloscope, where the probe shields are usually returned to Earth. I was lucky, but providing users with a warning about this could save somebody's life one day. Users should be warned in BIG LETTERS about this change in behaviour, perhaps printed on the PCB as well. IMO this is a safety hazard, because adding the Discovery BNC adapter board to the Analog Discovery changes its electrical behaviour in a significant way (from differential to single ended) but there is no mention of this in the Discovery BNC adapter board reference manual.

Instead, there was a crack, a flash, and a little jet of molten metal, as the clip on one of my scope probes vaporised! I was expecting each channel to measure the differential voltage across each probe. Why is this important? I just found out the hard way, when I connected the scope leads from the Discovery BNC adapter board to parts of a circuit at very different voltages. Therefore, they form a short circuit between any conductors they are connected to.

To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.Although the Analog Discovery has fully differential analog (scope) inputs, the Discovery BNC adapter board does NOT! For some reason the negative inputs of both analog channels have been connected to the Analog Discovery ground. Your risk from exposure to these chemicals varies, depending on how often you do this type of work.

arsenic and chromium from chemically treated lumber.

crystalline silica from bricks and cement and other masonry products, and.

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.Īdditionally, for certain products sold on AESwave, we also provide the following warnings based upon California law:įor Tools - California requires the following notice: Proposition 65 entitles California consumers to warnings for products that contain chemicals known to California to cause cancer and birth defects or other reproductive harm if those products expose consumers to such chemicals above certain threshold levels.ĪESwave provides the following warning for products linked to this page: Please see the California state government official website for more information: California Proposition 65 Proposition 65 requires businesses to notify Californians about significant amounts of chemicals in the products they purchase.