23 lines
860 B
Rust
23 lines
860 B
Rust
use super::{Channel, Error};
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/// Provide an interface to measure RF input power in dBm.
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pub trait PowerMeasurementInterface {
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fn sample_converter(&mut self, channel: Channel) -> Result<f32, Error>;
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/// Measure the power of an input channel in dBm.
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///
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/// Args:
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/// * `channel` - The pounder input channel to measure the power of.
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///
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/// Returns:
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/// Power in dBm after the digitally controlled attenuator before the amplifier.
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fn measure_power(&mut self, channel: Channel) -> Result<f32, Error> {
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let analog_measurement = self.sample_converter(channel)?;
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// The AD8363 with VSET connected to VOUT provides an output voltage of 51.7 mV/dB at
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// 100MHz with an intercept of -58 dBm.
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// It is placed behind a 20 dB tap.
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Ok(analog_measurement * (1. / 0.0517) + (-58. + 20.))
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}
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}
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