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Updated IQ trim (markdown)

Mark Thompson 2024-02-15 09:38:41 -06:00
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IQ-trim.md

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IQ Trim allows you to trim "radio silence" from the beginning and end of a C16 or C8 capture file. IQ Trim allows you to trim "radio silence" from the beginning and end of a C16 or C8 capture file.
![IQTrim](https://github.com/portapack-mayhem/mayhem-firmware/assets/3761006/e83a4ca5-af1d-4aeb-918f-1df056fb3d04) ![SCR_0072](https://github.com/portapack-mayhem/mayhem-firmware/assets/129641948/ae2c1434-93a0-4ddc-b45e-a8803f544601)
## UI Components ## UI Components
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* **Samples** - Number of samples in the capture file. * **Samples** - Number of samples in the capture file.
* **Max Pwr** - Power (complex magnitude) of the "strongest" sample in the capture file. * **Max Pwr** - Power (complex magnitude) of the "strongest" sample in the capture file.
* **Cutoff** - Signal to Noise cutoff as a percentage of the Max Pwr. Can be modified. * **Cutoff** - Signal to Noise cutoff as a percentage of the Max Pwr. Can be modified.
* **Amplify** - The signal (and noise) in the trimmed file can also be amplified, which might help if the captured signal was weak.
## Trimming Capture Files ## Trimming Capture Files
1. Open a capture file. You should hopefully see a trimmable region in the IQ Display control. 1. Open a capture file. You should hopefully see a trimmable region in the IQ Display control.