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Wavetek 3000 - Non-Harmonics Test

Wavetek 3000
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PERFORMANCE
TESTS
METHOD
4-
12
4.7
NON-HARMONICS
TEST
4
.
Increase
the
setting
of
the
Signal
Generator
FREQUENCY
selector
in
1
MHz
steps
between
1
and
10
MHz
while
observing
the
spectrumanalyzer
display
.
The
harmonics
should
be
>26
dB below
the
fundamental
.
Record
the
maximum
harmonic
ob-
served
in
the
display
in
dB below
the
fundamental
on
line
17
of
the
PTR
.
5
.
Setthe
Signal
Generator
OUTPUT
step
attenuator
to
0
dBm,
andrepeat
steps
3
and
4
at
the
+3
dBm
outputlevel
.
Record
the
maximumharmonic
observed
in dB
below
the
fundamental
on line
18 of
the
PTR
.
6
.
Set the
Signal
Generator
FREQUENCYselector
to
10
MHz
and
the
OUTPUT
step
attenuator
to
+10 dBm
.
7
.
Set the
spectrumanalyzer
to
measure
harmonic
dis-
tortion
of
the
Signal
Generator
for
fundamental
frequencies
between
10
and 520
MHz
.
Set the
bandwidth
to
300 kHz
and
the
frequency
spanper
division
to
100
MHz
.
8
.
Increase
the
setting
of
the
Signal
Generator
FREQUENCY
selector
in
10
MHz
steps
between
10
and520MHz
while
observ-
ing the
spectrumanalyzer
display
.
Theharmonics
should
be
>30
dB
below
the
fundamental
.
Record
the
maximum
harmonic
observed
in
the
display
in dB
below
the
fundamental
on
line
19
of
the
PTR
.
9
.
Set the
Signal
Generator
OUTPUT
step
attenuator
to
0
dBm
and
repeat
steps
7
and
8
at
the
+3
dBm
output level
.
Record
the
maximumharmonic
observed
in
dB
below
the
funda-
mental
on
line
20 of
the
PTR
.
SPECIFICATION
Non-harmonicsare
shown
in
the
following
table
:
A spectrumanalyzer
is
used
to
measure
the
level
of
non-
harmonics
in
the
1
to
520
MHz range
at
+13
dBm,/the
maximum
specified
output
level
of
the
Signal
Generator
.
FundamentalRange
(MHz)
Non-harmonicRange
PiHz
-
Non-harmonic
level
dB
below
fundamental
1
to
3
1
to
3
>60
3
to
250
3
to
250
>65
3
to
350
3
to
350
>55
3
to
520
3
to 1000
>35
frequency
span
per division
to
5
MHz,
and the
display
to 10
dB/div
.
Locate
the
zero
reference
at
the
left edge
of
the
graticule,
and
adjust
thefundamental
amplitude
to
the log
reference
line
(0
dB)
in
the
display
.

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