742MHz sounds suspiciously like a harmonic of the 74.25MHz max TMDS clock
rate for a Category 1 cable per the HDMI 1.3a spec. I don't have the HDMI
2.0 spec (not an adopter), but would love to know more about the test
configurations. A few thoughts/tests:
4K resolution at lowest color depth (no
I’ve been working with some Silicon Images (Lattice Semi) 9777 multiplexer
chips lately and would appreciate any insight list members might have. When
used at any resolution below 4k, there seems to be a 10 dB emission “pedestal”
that stands out of the baseline emission at several frequencies,
Thank you, John
The ICs themselves are too small to produce significant RE but they may be a
powerful RE source for distribution through PCB tracks and external cables.
That’s why there is standard IEC 61967 for testing RE from ICs. Also btw, there
is standard IEC 62132 for testing ICs immun
The National Semi/TI parts have been used in dozens (perhaps hundreds) of
laptop and LCD monitor designs over the past 12 years or so. The video
scaler suppliers are very protective of their IP, so you are likely to find
the most detailed information from the LVDS driver suppliers. You should
hav
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