Hp 8341A/B; Introduction; Selecting The Type Of Testing - HP 8340B Manual

Chapter
7.
Testing an
HP
8340A/B
or
HP 8341A/B
7.0
Introduction
Whether you are testing an
HP 8340A/B
or
HP
8341A/B., the tests which may be
run
and the
flow of the test
software are
the
same-
Since this
is
the case,
this chapter
will
discuss
the flow
of the test software from the
8340 FAMILY TEST SYSTEM
menu
to
the test
menu
(either the
Operation Verification menu
or the Attenuator Calibration menu) This
chapter
will
not differ¬
entiate between
testing an HP 8340A/B
or
HP 8341A/B Once
you are ready to run
a
specific
test, you should proceed
to the chapter which discusses the test
you
wish
to run
7.1
Selecting the Type of Testing
After
you
have selected the appropriate softkey, Test8340A, Test8341A, TestH02 (HP 8340A
Option H02),
Test8340B, orTest8341B,
you
will be given
a
choice of performing an Operation
Verification (OpVer) or Attenuator Calibration (Cal) For either type of testing you select, the
program
will proceed as
follows.
1.
The computer will tell you the
model number and serial number
it
read from the Instru¬
ment's Calibration Constants and ask you to verify that they are correct-
If
the
number
obtained
is
incorrect you will need to
verify the instrument's calibration data using the
hard copy of the calibration
data located underneath the
DUT's top cover. Otherwise,
select YES
2.
The computer will now read the rest of the Instrument's Calibration Constants
If
the
computer now
offers the
Menu
softkey, go directly to
step
3
CALIBRATION CONSTANT DISCREPANCIES
If
there
is
a
Cal Constants data file for this instrument on the data disc, and the file
does
not match the Cal
Constants
in the instrument, the computer will display the following:
OUT CAL #Ca/
Constant Name
=
### BUT FILE
=
###
[OUT OK] [NEITHER] [FILE OK]
The most common reason for this
screen to be displayed
is
that
someone has pressed
[SHIFT] [PEAK]
on the synthesizer- This function causes the synthesizer
to automatically
optimize its
RF output power and to update the YTM
GAIN,
YTM OFFSET,
and the YTM BX
GAIN Cal Constants. If
the Cal Constant
being displayed Is
one
of
those
listed above, and the
synthesizer does not have
a
front panel failure annunciator on, it is
likely that the
Cal Constant
In the
DUT
is
OK.
In
any case,
it
Is up to the operator to determine which of
the Cal
Constants
is
valid
(one method
is by
examining the printed copy of
the Cal
Constants located underneath
the synthesizer's top cover) or to assume that the data disk (file)
Is
OK.
Press the appropriate softkey
in
response
to the
prompt.
If NEITHER
is selected, you
will
need to
enter the correct value for the Cal Constant After
all Cal Constant discrepancies are
taken care
of,
the program will
return
to normal operation
HP 8340A/B and HP 8341A/B
Testing an
HP 8340A/B
or
HP 8341A/B
21