or, for
syn
thesizers
with
Option
002,
press:
4
MOD
5
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
Pulse
Menu
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Pulse
On/Off Ext
(asterisk on)
6.
On
the
sp
ectrum
analyzer
set
the
reference
level
to
0
70 dBm.
7. Set
the mark
er to
the highest
p
eak
and
note
the
maxim
um
mark
er
amplitude.
8.
The
dierence
b
et
w
een
the mark
er v
alue in
step 4
and
the
mark
er
v
alue
in
step 7
is the
pulse on/o
ratio.
Record
this
v
alue
in
T
able
2-17
.
9.
On
the
sp
ectrum
analyzer,
set
the
reference
lev
el
to
0
dBm.
10.
On
the
syn
thesizer,
turn
o
external pulse:
4
MOD
5
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
Pulse
On/Off
Extrnl
(asterisk
o
)
or, for
synthesizers
with Option
002, press:
4
MOD
5
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
Pulse
Menu
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
Pulse
On/Off
Ext
(asterisk
o
)
11.
Rep
eat
steps
2
through
10
for
the
remaining
syn
thesizer
and
sp
ectrum
analyzer
frequencies
in
T
able 2-17
with the
follo
wing
c
hanges
to
step
7
when
testing
6.0
GHz:
F
or
a
CW
F
requency
of
6.0
GHz:
a.
Step
the
syn
thesizer
and
sp
ectrum
analyzer
in
50
MHz
steps
from
6.0
to
7.0 GHz.
b.
Note
the
frequency
of
the
highest
amplitude signal.
Set
the
syn
thesizer
and
sp
ectrum
analyzer
to
this
frequency
.
c.
Set
the
mark
er
to
the
highest
p
eak
and
note
the
maxim
um
mark
er
amplitude.
12.
Record
the
w
orst
case
v
alue
from
T
able 2-17
on the
test record.
Related
Adjustments
None
In
Case
of
Difficulty
1. A failure
can b e caused b
y a spur. Mo
ve the cen
ter frequency of b oth the
spectrum analyzer and the syn
thesizer b
y 1 kHz, and retest at that p oin
t.
If
the on/o ratio is bad, it will b
ebado
ver greater than a 100 kHz region.
2. Refer to the
Troubleshooting
manual.
HP 8360 Performance Tests
Pulse Modulation On/Off Ratio
2-67
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