Video Gain
7.
Connect
the
pulse
generator
to
the
oscilloscop
e's
c
hannel
1
through the
atten
uator,
lters,
and amplier
(B).
8. On
the
oscilloscop
e,
set:
Channel
1:
Volts/Division
0.2V
Offset
0
0.3V
Input
Coupling
dc
Input
Impedance
50î˜
Trigger:
Trigger
Mode
Edge
Trigger
Source
Channel
1
Trigger Level
0
0.4V
Trigger
Slope
Negative
9.
On
the
oscilloscop e,
note the
pulse
amplitude:
Vp
10.
Calculate
the
video
gain:
Video
gain
=
system
Vp
(from
step
9)
pulse generator
Vp
=
system
Vp
0
:
1
Vp
Video
Gain
=
Lo
w
Band
Video
Feedthrough
Disr
e
gar
d
if b
eyond your
synthesizer's c
ap
ability.
11.
Connect
the
pulse
generator
output
to
the syn
thesizer's pulse
input (C).
12.
Connect
the syn
thesizer
to
the
oscilloscop
e's
c
hannel
1
through
the
attenuator, lters, and amplier (D).
13. On the syn
thesizer, press:
4
CW
5
First CW frequency in T
able 2-21.
4
ALC
5
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNN
Leveling
Mode Search
.
4
POWER LEVEL
5
Maximum sp ecied lev
eled p o
wer
4
MOD
5
NNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNN
Pulse On/Off Extrnl
(asterisk on)
Change A Performance Tests
Pulse Modulation Video Feedthrough
12-33
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