To help you get started, we've collected the most common ways that niscope is being used within popular public projects.

ni / nimi-python / src / niscope / system_tests / test_system_niscope.py View on Github

def test_error_message():
    try:
        # We pass in an invalid model name to force going to error_message
        with niscope.Session('FakeDevice', False, True, 'Simulate=1, DriverSetup=Model:invalid_model; BoardType:PXIe'):
            assert False
    except niscope.Error as e:
        assert e.code == -1074118609
        assert e.description.find('Simulation does not support the selected model and board type.') != -1

View more ways to use niscope

Overall Status

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About

The niscope module provides a Python API for NI-SCOPE. The code is maintained in the Open Source repository for nimi-python.

Support Policy

niscope supports all the Operating Systems supported by NI-SCOPE.

It follows Python Software Foundation support policy for different versions of CPython.

NI-SCOPE Python API Status

NI-SCOPE (niscope)
Driver Version Tested Against	2023 Q4
PyPI Version
Supported Python Version
Documentation
Open Issues
Open Pull Requests

Installation

As a prerequisite to using the niscope module, you must install the NI-SCOPE runtime on your system. Visit ni.com/downloads to download the driver runtime for your devices.

The nimi-python modules (i.e. for NI-SCOPE) can be installed with pip:

$ python -m pip install niscope~=1.4.8

Contributing

We welcome contributions! You can clone the project repository, build it, and install it by following these instructions.

Usage

The following is a basic example of using the niscope module to open a session to a High Speed Digitizer and capture a single record of 1000 points.

import niscope
with niscope.Session("Dev1") as session:
    session.channels[0].configure_vertical(range=1.0, coupling=niscope.VerticalCoupling.AC)
    session.channels[1].configure_vertical(range=10.0, coupling=niscope.VerticalCoupling.DC)
    session.configure_horizontal_timing(min_sample_rate=50000000, min_num_pts=1000, ref_position=50.0, num_records=5, enforce_realtime=True)
    with session.initiate():
        waveforms = session.channels[0,1].fetch(num_records=5)
    for wfm in waveforms:
        print('Channel {}, record {} samples acquired: {:,}\n'.format(wfm.channel, wfm.record, len(wfm.samples)))

    # Find all channel 1 records (Note channel name is always a string even if integers used in channel[])
    chan1 = [wfm for wfm in waveforms if wfm.channel == '0']

    # Find all record number 3
    rec3 = [wfm for wfm in waveforms if wfm.record == 3]

If you need faster fetch performance, or to directly interface with SciPy, you can use the fetch_into() method instead of fetch(). See the fetch_into example.

Other usage examples can be found on GitHub.

Support / Feedback

For support specific to the Python API, follow the processs in Bugs / Feature Requests. For support with hardware, the driver runtime or any other questions not specific to the Python API, please visit NI Community Forums.

Bugs / Feature Requests

To report a bug or submit a feature request specific to Python API, please use the GitHub issues page.

Fill in the issue template as completely as possible and we will respond as soon as we can.

Documentation

Documentation is available here.

License

nimi-python is licensed under an MIT-style license (see LICENSE). Other incorporated projects may be licensed under different licenses. All licenses allow for non-commercial and commercial use.

gRPC Features

For driver APIs that support it, passing a GrpcSessionOptions instance as a parameter to Session.__init__() is subject to the NI General Purpose EULA (see NILICENSE).