Calibration and Adjustment
4
Agilent L4532A/ 34A Service Guide
59
AC Flatness Functional Test (optional)
Description
This p rocedu r e ver ifies t he AC flatn ess char acter istics of t he digitizer. AC
Flatn ess is an op tion al test because it is a typ ical char act er istic t hat is
n ot war r an ted . Th e AC Flatn ess was adju sted when t he in str umen t was
man u factu r ed an d is n ot n or mally adju sted again . However, an FAQ on
t he Agilen t web add r esses th is issu e:
www.agilen t.com/ fin d / L4532A
, t hen
select Technical Support > FAQs. The AC flatn ess is specified r elative t o
t he AC r espon se at 1 kHz.
The AC flatn ess t est p roced ur e con sists of measu r in g both 1 kHz an d
1 MHz inpu t sign als on selected r an ges an d compar in g t heir r elative
valu es. The t est sign als ar e gen er at ed by a calibr ation st an d ar d. Th e
inpu t sign als ar e measur ed by t he digitizer u sin g t he On Boar d
Measu r emen t cap ability to calculate t he RMS value of the inpu t sign als,
an d the measu r ed sign al amp litud es at t he two fr equ en cy p oin ts ar e
compar ed t o each ot her.
Equipment Setup
1
Read
Test Con sider ation s
on p age 48.
2
Con n ect t he Calibr at or ou tp u t t o t he Chan n el 1 inp u t on t he digitizer.
Do n ot con n ect th e chan n els in p ar allel for th is t est. Th e L4532A has
two chan n el inpu ts an d th e L4534A has fou r chan n el inpu ts.
3
Make a con n ection t o t he digitizer u sin g t he web in t er face (see
p age 35
).
