Coax cable characterization/sim test cable

Cable specifications

Property	Value
profile id	sim_test_cable
name	Simulated Test Cable
cable type	coaxial

Round-trip resistivity

Measured round-trip resistivity: 21.1333 ohm/m (linear_fit, n=2 lengths, connector intercept -0.6 ohm, R2=1).

SerDes signal integrity

Length (mm)	Channel	Rate (Gbps)	Eye area	Eye height (mV)	Eye width (ps)	Margin floor (mV)	Sessions
500	back	3	0.516602	575	239.583	51	1
500	back	6	0.390625	500	104.167	66	1
500	forward	3	0.5625	600	250	46	1
500	forward	6	0.430664	525	109.375	61	1
2000	back	3	0.25	400	166.667	96	1
2000	back	6	0.165039	325	67.708	111	1
2000	forward	3	0.282227	425	177.083	91	1
2000	forward	6	0.191406	350	72.917	106	1

Eye diagrams

eye_back_3g (sim_test_cable/2000mm/serdes/20260603_01)

eye_back_6g (sim_test_cable/2000mm/serdes/20260603_01)

eye_forward_3g (sim_test_cable/2000mm/serdes/20260603_01)

eye_forward_6g (sim_test_cable/2000mm/serdes/20260603_01)

eye_back_3g (sim_test_cable/500mm/serdes/20260603_01)

eye_back_6g (sim_test_cable/500mm/serdes/20260603_01)

eye_forward_3g (sim_test_cable/500mm/serdes/20260603_01)

eye_forward_6g (sim_test_cable/500mm/serdes/20260603_01)

Eye opening vs cable length

Link margin vs cable length

RF attenuation (VNA)

Length (mm)	Mean worst insertion loss (dB)	Worst insertion loss (dB)	Sessions
500	-2.6995	-2.6995	1
2000	-10.798	-10.798	1

Insertion loss vs frequency

Resistance measurements

Length (mm)	Round-trip ohm/m (mean)	Round-trip ohm/m (std)	Sessions	Measurements
500	19.9333	nan	1	3
2000	20.8333	nan	1	3

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