Agilent Technologies 83620A User Manual

High Band
Video
Feedthrough
Note
T
ypically,
high
band
video
feedthrough
is
so
small
that
it
is
dicult
to
measure.
Use
the
follo
wing
pro cedure
to v
erify that
the video
feedthrough is
negligible.
21.
On the
oscilloscop e,
set c
hannel 1
to
1
mV/div.
22.
On
the
syn
thesizer,
set
the
rst
CW
frequency
in
T
able
2-23.
T
able
2-23.
High
Band
Video
Feedthrough
Frequencies
F
requency
(GHz)
Video
F
eedthrough
(Vp)
5.0
10.0
15.0
20.0
23.0
23.
On the
oscilloscop e,
note
the
maxim
um
v
oltage
from
the
baseline.
Video
feedthrough
(Vp)
=
Vp.
Record
this
v
alue in
Table
2-23..
24.
Rep
eat
steps
22
and
23
for
eac
h
v
alue in
Table
2-23.
25.
Using
the
w
orst
case
v
oltage
(largest
v
alue)
from
(Table
2-23), calculate
the
video feedthrough
as follo
ws
using
the
video
gain
from
step
10:
Video
Feedthrough
(Vp)
=
Video
Vp/Video
Gain
Record this v
alue on the test record.
Millimeter Band Video Feedthrough
>
20 GHz
Disre
gardifb
eyond your synthesizer's c
apability.
26. Remo
ve the 130 MHz lter from the test setup.
27. Repeat steps 7 through 10
to check video gain once more.
Change A Performance Tests
Pulse Modulation Video Feedthrough
12-37
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Agilent Technologies 83620A Specifications

General

Brand	Agilent Technologies
Model	83620A
Category	Blower
Language	English