Calibration and Adjustment
4
Agilent L4532A/ 34A Service Guide
51
DC Voltage Accuracy
This p rocedu r e ver ifies t he DC accu r acy specification s of t he d igitizer. It
can be used t o deter min e if t he digitizer meets its p u blish ed
sp ecification s for DC accu r acy or if it is in n eed of adju stmen t. It can
also be u sed t o ver ify t hat t he adju stmen t p roced ur e was su ccessfu l in
adjustin g t he d igitizer accu r acy t o meet its pu blished specification s.
Th e DC accu r acy ver ification p rocedu r e uses a calibr ation st an d ar d of
kn own accu r acy t o gen er at e DC volt age inp u t sign als t hat ar e measu r ed
by t he digitizer. The measur emen t r esu lts ar e th en comp ar ed to th e
kn own values of t he inp u ts to det er min e t he measu r emen t er ror of t he
d igitizer. Lar ge dat a r ecord s ar e acqu ir ed an d aver aged in or der to
r edu ce th e effects of n oise on t he measur emen ts an d t o mor e accu r at ely
d et er min e th e DC valu e of th e inp u t sign als. The On Board Measu r emen t
cap ability of t he d igitizer is u sed to p er for m th e dat a aver agin g.
Equipment Setup
1
Read
Test Con sid er ation s
on p age 48.
2
Con n ect t he Calibr at or ou tp ut t o t he Ch an n el inp u ts on th e d igitizer.
All th e ch an n els may be con n ect ed in p ar allel to make th e
measu r emen ts easier. Use BNC T- con n ector s n ear t he ch an n el inp uts.
Th e L4532A has two ch an n el inp u ts an d t he L4534A h as fou r ch an n el
inp uts.
L4532A 2-Channel
Connections
