Loading Firmware into a New CPU
Use this procedure to load firmware for an instrument whose CPU board has
been replaced.
1. Turn off the network analyzer.
2. Insert the firmware disk into the instrument’s disk drive.
3. Turn the instrument on. The firmware
wilI
be loaded automatically during
power-on. The front panel
LEDs
should step through a sequence as
firmware
is loaded. The display will be blank during this time.
At the end of a successful loading, the
LEDs
for Channel 1 and
Testport
1
will remain on and the display will turn on indicating the version of
firmware
that was loaded.
Note
After the llrmware has been loaded, the correction constants
must be restored. Refer to
‘Ihble
3-l (2 of 3) to identify the
service procedures required to restore (retrieve) or recreate the
correction constants.
In
Case of
Diflhlty
n If the lirmware did not load successfully, LED patterns on the front panel can
help you isolate the problem.
q If the following LED pattern is present,
an
acceptable hrmware filename
was not found on the disk. (The desired format for
gnuware
filenames is
87533-07. -02.) Check that the
lirmware
disk used was for the HP 87533.
Adjustments and Correction Constants
343
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