DS90UB954-Q1: how to set Scope when CMLOUT eye is monitored

Takuma Ito

Part Number: DS90UB954-Q1

hello please give me oscilloscope setting for 954 CMLOUT, in synchronous mode.

I need below

- PLL type (2nd order?

- loop BW

- damping factor

- memory depth

- sample rate

0 Jiashow Ho over 5 years ago

HI Ito-san,

Please give me a couple of days to find out the answer for you.

Best,

Jiashow

0 Jiashow Ho over 5 years ago in reply to Jiashow Ho

Hi Ito-san,

When we do eye measurements, we use PLL Customer BW, Type I PLL Model, Loop BW 2MHz.

Best,

Jiashow

0 Takuma Ito over 5 years ago in reply to Jiashow Ho

Jiashow,
How about damping factor?

by the way do you have setting for keysight oscilloscope?

0 Jiashow Ho over 5 years ago in reply to Takuma Ito

Hi Ito-san,

There's no damping factor for Type I.

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