Ryan Malloy
cd3a8cc6be
- sco_mod: 9-channel FM subcarrier oscillator modulator (inverse of sco_demod), with round-trip tests proving voltage recovery across all channels - fm_voice_subcarrier_mod: add audio_input parameter to accept external float streams (e.g., Apollo mission voice recordings) instead of internal test tone - loopback_demo.py: streaming TX->RX round-trip with CLI for noise/voice/frames - agc_loopback_demo.py: full Virtual AGC integration via TCP bridge
59 lines
1.3 KiB
YAML
59 lines
1.3 KiB
YAML
id: apollo_sco_mod
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label: Apollo SCO Mod
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category: '[Apollo USB]'
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flags: [python]
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parameters:
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- id: sco_number
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label: SCO Channel (1-9)
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dtype: int
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default: '1'
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- id: sample_rate
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label: Sample Rate (Hz)
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dtype: real
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default: '5120000'
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inputs:
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- label: in
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domain: stream
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dtype: float
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outputs:
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- label: out
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domain: stream
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dtype: float
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templates:
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imports: from apollo.sco_mod import sco_mod
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make: >-
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apollo.sco_mod.sco_mod(
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sco_number=${sco_number},
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sample_rate=${sample_rate})
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documentation: |-
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Apollo Subcarrier Oscillator (SCO) Modulator
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Generates FM subcarrier oscillator signals for analog telemetry. Takes a
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0-5V sensor voltage input and produces an FM subcarrier tone at the
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selected channel frequency with +/-7.5% deviation.
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Transmit-side counterpart to the SCO Demodulator.
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SCO Channels:
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1: 14,500 Hz 4: 40,000 Hz 7: 95,000 Hz
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2: 22,000 Hz 5: 52,500 Hz 8: 125,000 Hz
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3: 30,000 Hz 6: 70,000 Hz 9: 165,000 Hz
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Voltage mapping (linear):
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0V -> center - 7.5% (low frequency)
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2.5V -> center (nominal)
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5V -> center + 7.5% (high frequency)
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Only used in FM downlink mode.
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Parameters:
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sco_number: SCO channel number (1-9)
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sample_rate: Sample rate in Hz (default 5.12 MHz)
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file_format: 1
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