Popular Keywords

PDM

Pulse Density Modulation (PDM) stands as a prominent digital signal modulation technique widely employed in the digitization and transmission of audio signals. This modulation method serves as an effective means of representing analog signals through a bitstream, particularly in applications related to microphone audio transmission. Operating within a voltage range of 1.8 to 3.3 volts, PDM has become a pivotal technology in the realm of audio processing, providing a robust solution for capturing and transmitting high-quality audio data in various electronic devices.

Application: PDM is a form of modulation used to represent an analog signal with a bitstream. Usually for microphone audio transmission.

Logic Analyzer / MSO

TB3016F

TB3016F

TB3000 series Specifications PDF

MSO2116E (w/ analog channels)

MSO2116E

MSO2000 series Specifications PDF

MSO3124V (w/ electrical validation)

MSO3124V

MSO3000 series Specifications PDF

Model TB3016F MSO2116E MSO3124V
Decode y y y
Analog Channels y y
Electrical Validation y

Normal Mode

Audio mode

Save as TXT/CSV

In Logic Analyzer mode, click the icon above the report area to save the decoded data as a TXT/CSV file.

Export Icon

PDM Electrical Validation

Use an oscilloscope for PDM electrical validation to ensure compliance with defined specifications. After an extended burn-in test, the oscilloscope confirms that the electrical characteristics of the signal meet the required standards.

Supported ModelsTS3124V (4-channel DSO), MSO3124V (4-channel DSO + 16-channel LA)

Electrical Validation Solution PDF

Electrical Validation solution pdf

PDM Decoding Setup Steps

1. Click Quick Settings or Add Protocol Decode to select a protocol for logic analyzer capture.

2. Select PDM for decoding.

3. If you use Quick Settings, the system will recommend configurations for trigger type, sampling rate, voltage threshold, and channel settings.

4. Click the icon to access the Decode Settings screen.

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Decode Settings

Channel: Clk & Data source

Mono & Stereo: Audio mono or stereo selection

PDM Sample Rate: PDM clock speed

Decimation Parameter: Calculation parameter for PDM to PCM

Audio Frequency: PCM audio frequency

Sound Reduction: Audio display, play & save as .WAV

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