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attila

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Posts posted by attila

  1. Hi @Dr.Zool

    Maybe AD3 V+ is not providing 5V or there is a problem with the IA adapter like one of the relay drivers is bad or it consumes a lot of power and the voltage drops, in this case it should also heat up...

    I was only able to reproduce some relays to not switch, just by lowering the V+ voltage from the software code.

    Please check the V+ voltage in the Supplies tool: without adapter (V+ controlled from Supplies) and with adapter connected (V+ controlled by IA interface).
    Also the power consumptions (USB Current) should not increase by much with the adapter.
    You could also verify the V+ voltage (top 3rd/4th pins) on the header or the C3 capacitor on the adapter.

    image.png

    image.png

  2. Hi @Vladimir F

    On ADP3X50 the USB Vbus is only used for host detect, so this has no (<mA) power requirements.
    Dropping or fluctuating Vbus voltage could cause the ADP to sense USB host disconnect, resulting communication error in the software.
    The source of such problem could be bad USB cable or contact issue.
    Eventually high currents passing through the USB cable GND caused by 'bad' supplies, like having different earth connections for the two supplies. Such problem could damage devices. For together used devices is recommended to connect supplies to adjacent sockets or the same extension cord.

    The earlier post in the same topic:

     

  3. Hi @Hansi

    The app's "no synchronization" just hides these options to simplify the interface.
    Setting wait/run is sufficient in the custom app/script and for synchronized mode use FDwfAnalogOutConfigure(hdwf, -1, 1) or FDwfAnalogOutMasterGet

    FDwfAnalogOutTriggerSourceSet(trigsrcAnalogIn) trigger on oscilloscope T0
    The trigsrcDetectorAnalogIn looks for trigger condition on the analog input.

     

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    image.png

  4. Hi @Peter Salmon

    The Analog Discovery 2,3 have V+/V- voltage sources and 2 AWG channels. The V+/- can also be used as slow AWGs.
    The DPS3340 has 2 positive and 1 negative voltage/current current sources which can be also used as slow AWGs either in voltage or current mode. The output capacitance is 200-500uF.
    See:
    https://digilent.com/reference/test-and-measurement/analog-discovery-2/start
    https://digilent.com/reference/test-and-measurement/analog-discovery-3/start
    https://digilent.com/reference/test-and-measurement/discovery-power-supply-3340/start

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