USB-5133 Input circuit

[Valentin87]

Hi.

Is it possible to get schematic of analog input circuit for USB-5133? Thanks.

[balexand]

Hi Valentin87,

Precise schematics are generally classified as NI Confidential.  Here is some public information which may help you:

https://www.ni.com/documentation/en/oscilloscope-device/latest/usb-5133/overview/

• 40 mVpk-pk to 40 Vpk-pk input range
• 1 MΩ input impedance
• AC, DC and GND coupling

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https://www.ni.com/documentation/en/oscilloscope-device/latest/usb-5133/block-diagram/

Sorry that this is maybe an oversimplified answer to your request.

If you can be more specific in your questions about the input circuit, I may be able to provide some more detailed answers.

[Henrik_Volkers]

The spec additionally tells :

Input impedance 1MOhm || ~17pf

AC cutoff 12 Hz (3db) ...

Hook up a NVA and you can measure all properties you migth need 😉

However a bit more documentation as can be found in other digitizer/scope devices from NI should be standard!