No external PSU, only the internal battery. The laptop had fully charged batteries, one month old, properly seasoned (Li-ion, 11.1V/4.4Ah) I was sitting close to the loudspeakers of my system so I could listen to the difference in electric noise from the Laptop PSUs (that was the intent). I was testing different PSUs for my laptop which I use as digital source (Laptop USB out to a CM6631A USB to I2S board). Maybe that would have avoided the HS01 problems, but Topping claims the device works with USB powered dacs if auxiliary 5v power is fed in through a USB-C power connector on the side of HS01.Ĭlick to expand.The hole in the ground is too deep Its also possible to operate the dirty (or USB interface side) from a separate clean +5v supply. The clean side uses a dedicated clean +5v supply from inside the dac. Its dirty side is by default powered by USB. It was just a random experiment to see if it had any effect at all, which as it turned out it did.īTW, this happened using I2SoverUSB. DAC always sounded good without such a device. Removing HS01 fixed all the above symptoms at once. It also sometimes caused the USB board to drop out and start generating noise at the dac output. Putting a metal shield between the USB board and the rest of the dac helped some. Also, every different +5v power supply I tried with HS01 made the dac sound different. For one thing it seems to generate a lot of EMI/RFI that can radiate across galvanic isolation barriers with ease. Found if anything it created new problems. If anyone has some similar or different experience with these units, I would like to know.Ĭlick to expand.Recently got an HS01 just to check out. I can take the chance for buying a-non functional unit from ebay from time to time, but the really bad news here is that, what happened with this 15.754Euro useless USB isolator, took with it the downstream USB to I2S device (Amanero clone) costing 29.51Euro. Post-mortem inspection revealed two ‘V05’ ICs (ED3, ED5 on the PCB, which are protection diode arrays) as well as the ADUM3160 IC having visible damage (surface bulging). Well, immediately, light, smoke and smell came out from behind the USB-out area of the isolator PCB. Therefore I connected an external 5Vdc source to the isolator (voltage and polarity tested) to see if the unit will function properly. With no external power connected to it, the host PC did not see the USB to I2S device connected downstream of the USB isolator hub (which it was detected and functional when the isolator was not in between). We will reply your email within 24 working hours.I purchased from ebay a USB isolator hub naked unit If you have any questions, p lease feel free to contact us via "Ask seller a question". We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any problems about payment, please contact us via ebay message. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance. Transit time may be a little delayed because of the bad weather and customs inspection. It takes about 7 -15 working days to UK about 10-30 working days to other countries. Also, the each additional item means exactly the the same color and size. Please kindly note that the c ombined shipping is not provided because the shipping fee is calculated by weight. Please comfirm that your paypal address is in line with your shipping address. POLICES ShippingPaymentWARRANTY We only ship to confirmed Paypal addresses. 2.Please allow slight manual measurement deviation for the data. Product parameters: ADUM3160 isolation voltage: 2500V Power module isolation voltage: 1500V Power supply: Taken from the computer host USB port Operating Environment: -40☌ to 85☌ Size: 1.5x2.5圆.6cm/0.59x0.98x2.6inch Color as shown Quantity: 1 piece Package list: 1 * USB to USB Isolator Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Supports USB control transfer, bulk transfer, interrupt transfer, isochronous/isochronous transfer. Supports USB full speed 12Mbps does not support pure high speed devices. 2500V isolation, no external power supply, no need to drive. Control Transfer USB To USB Isolator Digital V Industrial Grade DESCRIPTION Features: 100% brand new high quality Made of high-quality materials for durability Industrial Grade Digital Isolator ADUM4160 / ADUM3160 USB Isolator Shell 12Mbps Speed USB to USB Isolator It is USB 2.0 compliant and provides full isolation at 12 Mbps data rate. Item: 155270759742 Trasferimento controllo isolatore digitale da USB A USB 1 pz 2500 V grado industriale.
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