HP 8753D - Page 526

The
value is
displayed in
the active
entry
area,
and
can
be
changed
with the
knob
,
step
keys
,
or
numeric
keypad.
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
STATS on
OFF
calculates
and displays
the
mean,
standard
deviation,
and
peak-to-peak
values of
the
section
of
the
displayed
trace
between
the active
marker
and
the
delta
reference
marker
.
If
there is
no delta
reference
,
the
statistics
are
calculated
for
the
entire
trace
.
A
convenient
use
of
this
feature
is
to
nd
the
peak-to-peak
value
of
passband
ripple
without
searching
separately
for
the
maximum
and
minimum
values
.
The
statistics
are
absolute
values:
the
delta
marker
here
serves
to
dene
the
span.
F
or
polar
and
Smith
chart
formats
the
statistics
are
calculated
using
the
rst
value
of
the
complex
pair
(magnitude
,
real
part,
resistance
,
or
conductance).
After
each
standard
is
dened,
including
osets
,
press
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
NN
N
N
N
N
N
N
STD
DONE
(DEFINED)
to
terminate
the
standard
denition.
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
STD
DONE
(DEFINED)
returns
to
the
dene
standard
menu.
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
STD OFFSET
DONE
is
used
to
end
the
specify
oset
sequence
.
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
STD
TYPE:
is
used
to
specify
the
type
of calibration
device being
measured.
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
x
3
STD
TYPE:
ARBITRARY
IMPEDANCE
denes
the
standard
type to
be a
load,
but
with
an
arbitrary
impedance
(dierent
from
system
Z0).
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
STD
TYPE:
DELAY/THRU
denes
the
standard
type
as
a
transmission
line
of
specied
length,
for
calibrating
transmission
measurements
.
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
STD
TYPE:
LOAD
denes
the
standard
type as
a
load
(termination).
Loads
are
assigned
a
terminal
impedance
equal
to
the
system
characteristic
impedance
ZO
,but
delay and
loss
osets
may
still
be
added.
If
the load
impedance is
not
ZO
,
use
the
arbitrary
impedance
standard
denition.
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
NN
N
N
N
N
N
N
N
N
STD
TYPE: OPEN
denes
the
standard
type
as
an
open
used
for
calibrating
reection
measurements
.
Opens
are
assigned
a
terminal
impedance
of
innite
ohms
,
but
delay
and
loss
osets
may
still
be
added. Pressing
this
key
also
brings
up
a
menu
for
dening
the
open, including
its
capacitance
.
N
N
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
N
STD
TYPE:
SHORT
denes
the
standard
type
as
a
short
used
for
calibrating
reection measurements
. Shorts are assigned a terminal
impedance of 0 ohms
, but delay and loss osets may still be
added.
NNNNNNNNNNNNNNNNNNNNNNNN
NNNNN
STEP SIZE
is used to specify the subsweep in frequency steps instead
of number of points
. Changing the start frequency
, stop
frequency,
span, or number of points may change the step size
.
Changing the step
size may change the number of points and
stop frequency in start/stop/step
mode; or the frequency span
in center/span/step mode. In each case, the frequency span
becomes a multiple of the step size.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
STIMULUS VALUE
sets the starting stimulus value of a segment, using entry block
controls. The ending stimulus value of the segment is dened
by the start of the next line segment. No more than one
segment can be dened over the same stimulus range.
9-40 Key Denitions