Changes between Version 8 and Version 9 of Hardware/FR3


Ignore:
Timestamp:
Aug 16, 2025, 10:44:06 AM (3 weeks ago)
Author:
seskar
Comment:

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  • Hardware/FR3

    v8 v9  
    3030 * High LO Frequency (GHz) — sets the “high-side” LO.
    3131Use the numeric box for fine increments and the slider for coarse moves. Together, these LOs place the desired FR3 RF channel while keeping IF in the supported sub-6 GHz range.
     32
    3233  [[Image(pi-frequency.png, 600px)]]
    3334
    3435* Filters panel: Per-chain drop-downs select the active RF/IF path for RX0, RX1, TX0, and TX1. The bypass option routes around the filter network; select a non-bypass entry to engage the appropriate bandpass path for that chain.
     36
    3537  [[Image(pi-filters.png, 600px)]]
    3638
     
    3840  [[Image(pi-gain.png, 600px)]]
    3941
    40 * LO Supression: DC bias trims for the I and Q paths on each TX chain (TX0 I/Q bias, TX1 I/Q bias, in volts). Small adjustments here null residual LO feed-through and balance IQ, reducing the tone at the carrier when the transmitter is idle. Start near 0 V and sweep slowly while observing the carrier leakage.
     42* LO Supression: DC bias trims for the I and Q paths on each TX chain (TX0 I/Q bias, TX1 I/Q bias, in volts). Small adjustments here null residual LO feed-through and balance IQ, reducing the tone at the carrier when the transmitter is idle. Start near 0 V and sweep slowly while observing the carrier leakage.
     43 
    4144  [[Image(pi-suppression.png, 600px)]]
    4245
     
    4649  * Disable Input 20 dB Attenuator — toggles the on-board input pad; uncheck to insert 20 dB of protection when measuring strong signals. 
    4750  * Reset LMX button — re-initializes the LO synthesizer(s) to recover from configuration changes.
     51
    4852  [[Image(pi-control.png, 600px)]]
    4953