W Hat Ar E Som E Typi Cal I Nt Er M Odul E M Easur Em Ent S - HP 16500B User Reference

Intermodule Measurements
What Are Some Typical Intermodule Measurements?

W hat Ar e Som e Typi cal I nt er m odul e M easur em ent s?

I nt er m odul e m easur em ent s m ay be as si m pl e as st ar t i ng sever al m odul es at
once, or ver y com pl ex w i t h m ul t i pl e ar m i ng sequences bet w een m odul es and
ext er nal equi pm ent . Som e exam pl es ar e:
Example
A nal yzi ng a G l i tch
A gl i t ch i s def i ned as t w o or m or e t r ansi t i ons bet w een t he sam pl es of a t i m i ng
anal yzer t hat cr oss t he l ogi c t hr eshol d. A t i m i ng anal yzer can t r i gger on a
gl i t ch and capt ur e i t , but doesn' t have t he vol t age or t i m i ng r esol ut i on t o l ook
at t he gl i t ch i n det ai l . O n t he ot her hand, an osci l l oscope can acqui r e
w avef or m s w i t h a gr eat deal of r esol ut i on, but i t can' t t r i gger on gl i t ches,
com bi nat i ons of gl i t ches, or pat t er ns.
To anal yze a gl i t ch, use a t i m i ng anal yzer and an osci l l oscope i nt er act i vel y.
Set up t he t i m i ng anal yzer t o t r i gger on a gl i t ch and w hen t he t i m i ng anal yzer
t r i gger s, capt ur e t he gl i t ch w i t h t he osci l l oscope. Then use t he osci l l oscope
t o l ook at t he w avef or m par am et er s of t he gl i t ch, i ncl udi ng i t s w i dt h, shape,
and am pl i t ude.
For t hi s i nt er m odul e m easur em ent , you ar e usi ng t he t r i gger i ng capabi l i t i es
of t he t i m i ng anal yzer and t he acqui si t i on capabi l i t i es of t he osci l l oscope.
Glitch Example
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