Agilent Technologies Agilent 4396B User Manual
Page 86
4.
Press
4
Meas
5
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ANALYZER
TYPE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SPECTRUM
ANALYZER
.
5.
Press
4
SP
AN
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ZERO
SPAN
.
6.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER:[GATE]
NNNNNNNNNNNNNNNNNNNNNNNNNN
EXTERNAL
.
7.
Press
4
SWEEP
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SAMPLING
NORM
rept
to
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
norm
REPT
to
change
the
sampling
mode
to
the
repetitive
sampling
mode
.
8.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NUMBER
of
POINTS
101
4
21
5 .
Then
press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SWEEP
TIME
550
4
M/
5 .
Figure
4-22.
Burst
Signal
Spectrum
and
T
est
Signal
Envelope
How
to
Determine
Gate
Delay
and
Gate
Length
Gate
Delay
Because
the
RBW
lter
requires
setup
time
for
the
lter
to
stabilize
after
triggering,
the
gate
delay
must
meet
the
following
limit:
T
d
>
2
RB W
In
this
example
,
RBW
=
100
kHz,
T
d
>
2
100
210
3
=
20
therefore
,
the
delay
time
T
d
in
this
example
must
meet
the
following
condition:
T
d
>
20
Gate
Length
Because
the
summation
of
gate
delay
T
d
and
the
gate
length
T
g
must
be
less
than
the
pulse
length
(
),
the
gate
length
must
meet
the
following
limit:
T
d
+
T
g
<
In
this
example
,
=
80 ,
T
g
<
80
0
T
d
If
T
d
is
set
to
30
in
this
example
,
T
g
must
meet
the
following
limit:
T
g
<
50
F
or
more
information
on
the
gated
sweep
and
the
repetitive
sampling
mode
,
see
the
Function
R
eference
manual.
4-18
Spectrum
Measurement
Examples