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Your driver is up to date - if you have a problem with your driver, you can try to re-install the old version as below. *: 2K=Windows 2000, 2K3= Windows 2003, XP= Windows XP, VISTA = Windows Vista, WIN7 = Windows 7ĢK, XP, 2K3, VISTA, WIN7, WIN8, WIN10/32bits Watch this video to see how it works - click here If your driver isn't working, use the driver having the same OEM with the your laptop/desktop brand name. If you are looking for an update, pickup the latest one. With the different devices, they can have the same driver, it's because they all use the same chip manufacturer. miniscope v4 - oscilloscope GUI.Below is a list of drivers that may be suitable for your device.Simpler and more flexible (sampling buffer vs DS buffer) DirectSoundScope::DataRcvCb() function fixed data loss on frame boundary when buffer size was not multiple of 1/10th of base sampling speed.device settings: "Enable extra logging" (enabled by default - relatively heavy logging showing timing for data flow).Recording) so using buffer sizes matching sampling grid is recommended at the moment (e.g. (1/10th of sampling speed is buffer size supplied to DirectSound) it is causing continuity loss (visible when quick fix for crash when using sampling buffer size that is not multiple of 1/10th of sampling speed.* Actually negative voltages can be measured alsoĬomplex waveform (generated with miniscope v2d AWG):ĤkHz square (as a rule of thumb digital oscilloscopes are useful up to 1/10th of sampling frequency)ĭsoundscope.dll + miniscope v4 (binaries) Settings window allows to define voltage per bit and offset (in raw units) that would be applied to raw data.ĭefault calibration settings are intented to result 0-6V range (*) when connected with 120k resistor in series and setting Volume to 0 in Windows 7.įor fine/final calibration use separate calibration function available in GUI (allowing calibrating each channel separately). Since case is easy to open I think it might be worth asking seller for PCB photo before buying particular card. I'm not sure at the moment if it is able to process DC voltage. (I haven't tested it yet but it's simple and looks promising).ĭon't judge a book by its cover (thanks to Daniel Montalvo) - it looks like othes type of sound card is sharing almost the same package: Justified as base STM32F103 board that doesn't have this problem (and is usable with miniscope v2c firmware/DLL) costs ~$4. Input buffer would fix it but I'm not considering it economically It may be not suitable for circuits with e.g. C6 capacitor has to be desoldered - its measured capacity is 80nF and it is connected with power supply for mic thus it would severely limit usable frequency range if we'dīeware that with this simple setup oscilloscope input would be equivalent to 2V voltage source with 250k resistance in series.
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make sure to disable AGC and set fixed volume (by default plugin is calibrated for Volume = 0) for sound input associated with card (Win7 below):.Measured voltage range to 0-6V noise measured in this configuration = 20mVpp resistor in series (I've used 120k and software is calibrated for it by default) seems like the cheapest way to extend.This offset source is relatively high - short-circuit current is 20uA adding 120k resistor in series reduces it to 8uA
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Product string: C-Media USB Headphone SetĪudio Device Class + HID (composite device) Connect your headset to a USB port on your computer, and the drivers will install automatically. Not necessary settings for this specific device. Part is used for audio volume and mute control and it functionality is slightlyīroken - same as with multimedia keyboard it controls default sound card settings, Sound cards available with price $1.1-$2 depending on vendor.ĭevice markings: HX2010-0705, production date 40th week of 2013 (or later?).ĭevice enumerates as composite device: sound card + HID input. This USB sound card that presents itself as C-Media is one of the cheapest