Tektronix TDS 460 - Noise on Channels

Mdx4

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Tektronix TDS 460 - Noise on Channels

Dopo 5 minuti di riscaldamento, SELF TEST PASSED!

 

Ora il problema sembra essere che i canali 3 e 4 soffrano di un discreto rumore di fondo non permettendo la calibrazione termica.

In questi casi la causa numero uno sono i condensatori, e sembra anche chiaro quali (in alto a destra nella foto)

Come è comune fare in questi casi, ho cambiato anche tutti gli altri avendo cura di pulire approfonditamente il PCB con alcool isopropilico per pulire qualsiasi residuo dell'acido (Odio gli SMD)

 

Pass !


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