- API_Example_0.55.100 (09/29/2026)
feat:
1. Added a device capability query interface to retrieve supported decimation factors, DDR capacity, bus bandwidth, and other device capabilities.
2. Added support for N140, N200, N400, and W200 series devices.
3. Added support for multiple matched filter types in the demodulation function.

refactor:
1. Optimized PNM phase noise measurements in the 9 GHz to 40 GHz frequency range.
2. Optimized the low-frequency sweep strategy.
3. Optimized RTA spectrum and Bitmap calculation performance.
4. Optimized the PNM integer-frequency-point calculation strategy.

fix:
1. Fixed an AGC compensation issue in SWP mode.
2. Fixed an issue where DataFormat was incorrectly restricted under certain decimation factors.
3. Fixed a potential crash under certain low-frequency configurations.
4. Fixed an issue where GNSS information could not be retrieved from the device.

- API_Example_0.55.89 (08/03/2026)
* Fixed an issue in SWP mode where, at 1 GHz with a very small span, enabling spurious rejection caused abnormal power fluctuations.
* Fixed an issue in SWP mode where signals disappeared when Span was less than 100 kHz with spurious suppression enabled.


- API_Example_0.55.88 (07/13/2026)
* Added support for firmware compatible with different BUS versions.

- API_Example_0.55.87 (07/03/2026)
* Fixed an issue in PNM Mode where signals at 100 MHz could not be measured.
* Fixed an issue that prevented switching to the internal high-quality reference clock source.

- API_Example_0.55.82 (04/17/2026)
* Added: Tracking generator feature added
* Fixed: Fixed an issue in PNM mode where a start frequency offset greater than 50 kHz would return -10
* Fixed: Fixed an issue in MSCAN mode where the FFT point calculation was incorrect for N-series devices with the 100 MHz bandwidth option

- API_Example_0.55.64 (03/04/2026)  
* Added: 32QAM demodulation support.
* Added: Device List function to obtain the list of devices currently connected to the host.
* Added: Tracking Source function for the EIO option, enabling synchronized tracking signal output with spectrum sweep.
* Modified: API library upgraded to version 0.55.64.
* Fixed: Corrected the PIO calculation error in RTA mode.
* Fixed: Resolved the issue where calling multiple NX devices simultaneously could return -9 or 10060.

- API_Example_0.55.63 (09/05/2025)  
* Modified: Updated the API library to version 0.55.63.
* Modified: Improved C# sample header file error codes, structures and function definitions.

- API_Example_0.55.62 (09/05/2025)  
* Added: GNU Radio example for Linux.  
* Added: Python example matplot display.
* Modified: Updated API library to version 0.55.62.
* Modified: Python example comments changed.
* Modified: C# example DSP_IQSToSpectrum.cs example traversal settings changed.

- API_Example_0.55.61 (07/08/2025)  
* Added: New Python examples.  
* Added: New Qt examples.  
* Added: New Device-related, IQS-related and SWP-related examples in the C++ examples.
* Modified: Updated API library to version 0.55.61.
* Modified: Refactored DET-related examples in the C++ examples.  
* Modified: Refactored RTA-related examples in the C++ examples.  
* Fixed: Corrected the implementation of the ACPRResult container in C++ when ACPR is enabled with 2 adjacent channels.