Running The Cal Utilities; Introduction; Entry Of The If - HP 8340B Manual

Chapter
6.
Running the Cal Utilities
6.0
Introduction
The Cal Utilities portion
of the software
is
provided
to
assist the operator in
generating
a
calibration data
file
for the specific
HP 355D step attenuator and HP 8485A power sensor
being used during the tests- As mentioned
in
Chapter
4,
Test Dependency, several of the tests
require the use of the data stored
in these data files
before they can be
run.
The data files
generated by the operator are stored and accessed on the storage media whose address
is
defined by Calfactor_dir$ and
Cf_msus$ (discussed in
Chapter
3).
When
using unmodified
software and
either an HP 9122D
or
9133H, the data
is
located on drive
0
Before running the Cal Utilities, you should obtain the calibration data for the attenuator
and
power sensor you
will be using during the tests. Once the data is
obtained, you can proceed
with the appropriate
utility.
Upon completion of the utility., the data you entered
will
be stored
The
only time you
will need to re-run the
Cal Utilities
is when the attenuator or power sensor
is
re-calibrated or if
you are using a
device for which
you
have not yet entered data
To run the Cal Utilities, press the Cat Utility softkey.
You
will
then be given
a
choice of entering
the attenuator's calibration data (IF Attenuator softkey) or the
power sensor's
calibration data
(Pwr Sensor Cal softkey). The Exit softkey will
return you to the
8340 FAMILY TEST SYSTEM
menu.
Make
your selection and proceed to
the appropriate entry paragraph below.
6.1
Entry of
the IF
Attenuator's
(HP 355D) Calibration Data
Press the
IF Attenuator softkey to begin entry of
the attenuator's calibration data.
A
softkey
menu
which provides you the options of Start
or Return
will be displayed Press the Start
softkey
to begin entry of the calibration data or the Return
softkey
to return to the
CALIBRATION UTILITIES
menu
When the Start softkey
Is
selected,
the program will
request
the serial number of the
attenuator and then the actual value of attenuation for the
10 dB through 70 dB steps When
entering
the attenuator step values, enter the actual
value (i.e,
if
the
10db
step is 10.02, enter
10..02). Also, the
values entered should be positive After entering
all
of the data,
you
will be
given the opportunity to make corrections if
necessary. Answer the rest
of the
questions
supplied In
the program and
then press Return to
return
to the
CALIBRATION UTILITIES
menu-
6.2
Entry of the
Power Sensor's
(HP 8485A) Calibration Data
Press the Pwr
Sensor
Cal softkey to begin entry of the
power sensor's calibration
data.
A
softkey menu which provides you the options of Start or Return will be displayed, Press the
Start softkey
to begin entry of the calibration
data
or the
Return softkey to return to
the
CALIBRATION UTILITIES menu Before pressing the Start softkey, perform the 10
MHz
Cal¬
ibration Procedure described
in paragraph 6.3
HP 8340A/B and HP 8341A/B
Running the Cal Utilities
19