Tag: GNU Octave

Setup di misura della GX-TXT-v3 con telecomando IR, righello per fissare la distanza e riferimenti per rendere riproducibile il posizionamento.

GX-TXT-v3: First Measurements with a Real Photodiode and IR Remote Control

Written by giux | Published on Aug 27, 2026 | No comments

GX-TXT-v3 tests with a real photodiode and IR remote reveal the 38 kHz carrier, burst timing, and NEC-family protocol.

#38 kHz carrier #Everlight PD333-3C/H0/L2 #GNU Octave #GX-TXT-v3 #infrared electronics #infrared remote control #IR carrier #IR photodiode #IR protocol analysis #IR remote control #MARK SPACE timing #NEC extended #NEC protocol #oscilloscope measurements #real photodiode #VIR node

Tempo di accensione del LED in funzione del numero di impulsi. Fino a 60 impulsi il LED rimane spento; la prima accensione osservata compare a 80 impulsi e la durata aumenta progressivamente per burst più lunghi.

GX-TXT-v3: Effect of Pulse Count on the HOLD Node Response

Written by giux | Published on Aug 26, 2026 | No comments

GX-TXT-v3 testing shows how pulse count affects HOLD-node charging, LED turn-on threshold, and indication time.

#circuit simulation #GNU Octave #GX-TXT-v3 #HOLD node #infrared detector #infrared remote control #IR burst #IR Remote Control Tester #LED on-time #LED threshold #LTspice #oscilloscope measurements #P_GAIN #P_SENS #pulse count #virtual photodiode

GX LII-2 – Lab Log: Bode Measurements with Reactive Loads and Fixture Limitations

Written by giux | Published on Aug 18, 2026 | No comments

GX LII-2 reactive-load Bode tests reveal fixture limits, repeatable phase rotation, and impedance-dependent measurement effects.

#A/B compensation #Bode measurements #capacitive loads #DUT impedance #feedback loop #FFT analysis #fixture limitations #frequency response #GNU Octave #GX LII-2 #injection point #injection transformer #Loop Gain #LTspice #oscilloscope measurements #phase measurement #phase rotation #reactive loads

Quaderno di laboratorio con frequenze, valori di Vgen e acquisizioni A/B della campagna di misure Bode sui partitori resistivi.

GX LII-2 – Lab Log: Bode Measurement Campaign on Resistive Dividers

Written by giux | Published on Aug 17, 2026 | No comments

GX LII-2 resistive-divider campaign: Bode measurements, A/B compensation, injection transfer, and FFT analysis in GNU Octave.

#A/B compensation #Bode measurements #calibration bench #common-mode noise #DUT impedance #FFT analysis #frequency response #GNU Octave #GX LII-2 #harmonic analysis #injection transfer #injection transformer #Loop Gain #LTspice #measurement residual #oscilloscope measurements #resistive dividers #spectral analysis

GX LII-2 – Lab Log: Bode Measurements and GNU Octave Processing

Written by giux | Published on Aug 13, 2026 | No comments

GX LII-2 lab log: Bode measurements, A/B compensation, harmonic analysis, clipping diagnostics, and GNU Octave automation.

#A/B measurement #Bode measurements #clipping detection #frequency response #gain crossover frequency #GNU Octave #GX LII-2 #harmonic analysis #injection transformer #Loop Gain #LTspice #measurement automation #oscilloscope measurements #phase crossover frequency #THD #waveform distortion

GX LII-2 – Experimental Characterization of the Measurement System

Written by giux | Published on Aug 13, 2026 | No comments

GX LII-2 measurement-system characterization: injection amplitude, THD, A/B orientation, DUT impedance, and LTspice comparison.

#A/B measurement #analog circuits #Bode plot #calibration bench #DUT impedance #frequency response #GNU Octave #GX LII-2 #harmonic analysis #injection amplitude #injection transformer #Loop Gain #LTspice #magnitude measurement #phase measurement #THD