HP 8753D - Page 349

T
able 6-5.
Standard Class
Assignments
Calibration
Kit
Label:
Disk File
Name:
Class Standard
Reference
Numbers
Standard
Class Label
1 2 3 4 5 6 7 8
S
11
A
S
11
B
S
11
C
S
22
A
S
22
B
S
22
C
F
orward
Transmission
Reverse
Transmission
F
orward
Match
Reverse
Match
Response
Response and
Isolation
TRL
thru
TRL
reect
TRL
line
or
match
The
number
of
standard
classes
required
depends
on the
type
of
calibration
being
performed,
and
is identical
to
the
number
of
error
terms
corrected.
A
response
calibration
requires
only
one
class,
and
the
standards
for
that
class
may
include
an
open,
or
short,
or
thru.
A
1-port
calibration
requires three
classes.
A
full
2-port
calibration
requires
10
classes
,
not
including
two
for
isolation.
The
number of
standards that
can
be
assigned
to
a
given
class
may
vary
from
none
(class
not
used)
to
one
(simplest
class)
to
seven.
When
a
certain
class
of
standards
is
required
during
calibration,
the
analyzer
will
display
the
labels
for
all
the
standards
in
that
class
(except
when
the
class consists
of
a
single
standard).
This
does
not,
however
,
mean
that
all standards
in a
class
must be
measured
during
calibration.
Unless
band-limited
standards
are
used,
only
a
single standard per class is required.
Note
It
is often simpler to keep the number of standards per class to the bare
minimum needed (often one) to avoid confusion during calibration.
Each class can be given a user-denable label as described under label class menus
.
Standards are assigned to a class simply by entering the standard's reference number
(established while dening a standard) under a particular class. The following is a description
of the softkeys located within the specify class menu:
NNNNNNNNNNNNNN
S11A allows you to enter the standard numbers for the rst class required for an S
11
1-port
calibration. (For default calibration kits, this is the open.)
6-82 Application and Operation Concepts