Agilent Technologies 83620A - Page 661

17.
Using
the
video gain
from step
10, the
video
feedthrough
(Vp)
from
step
16,
and
the
carrier
v
oltage
from
T
able
2-22,
calculate
the
video
feedthrough
as
a
p
ercen
t
of
carrier p
ow
er:
Video
feedthrough
(%)
=
[(video
Vp/carrier Vp)x100]/video
gain
T
able
2-22.
P
o
w
er
Lev
el
Conv
ersions
to
Volts
Peak
Syn
thesizer
Maxim
um
Sp
ecied
P
o
w
er
(dBm)
In
to
50
P
eak
Carrier
V
oltage
1
(V)
0 0.316
0.5 0.335
2.0 0.398
3.0 0.447
4.0 0.501
5.5 0.596
7.0 0.707
10.0 1.000
10.5 1.059
12.0 1.259
13.0 1.413
17.0 2.239
20.0 3.162
1
Peak Carrier V
oltage = 10

PdBm 0 10
20

18. Record the video
feedthrough (in T
able 2-21).
19. Rep eat steps 16 through 18 for the remaining CW frequencies in T
able
2-21.
20. Record the w
orst case v
alue from T
able 2-21 on the test record.
12-36 Performance Tests
Pulse Modulation Video Feedthrough
Change A
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