HP 8753D - Page 119

8. T
oaccess
the gate
function menu,
press:
4
SYSTEM
5
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
TRANSFORM
MENU
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
SPECIFY
GATE
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
CENTER
9.
To
set the
gate parameters
,
by
entering
the
marker
value
,
press:
4
1.6
5
4
M/

5
,or
turn
the
front
panel
knob
to
position
the
\
>
"
center
gate
marker.
10.
T
o
set
the
gate
span,
press:
NN
NN
NN
N
N
N
N
N
N
N
N
SPAN 4
1.2
54
M/

5 or
turn the
front
panel
knob
to
position
the
\ag"
gate
markers
.
11.
T
o
activate
the
gating
function
to
remove
any
unwanted
responses
,
press:
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
GATE
ON
As
shown
in
Figure 2-51
, only
response from
the main
path
is
displayed.
Note
Y
ou may
remove
the
displayed
response
from
inside
the
gate
markers
by
pressing
N
NN
NN
N
N
N
N
N
N
N
N
N
SPAN and
turning
the
front
panel
knob
to
exchange
the
\ag"
marker
positions
.
Figure
2-51.
Gating
in
a
Time
Domain
Transmission
Example
Measurement
12.
To adjust the gate shape for the best possible
time domain response
, press
NNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNN
GATE SHAPE
and
select between minimum, normal, wide
, and maximum. Each gate has a dierent passband
atness, cuto rate
, and sidelobe levels
.
2-70 Making Measurements