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n After the power-on self-realignments are complete, press PASS
CONTROL
. This removes the
computer as being the active controller on HP-IB, permitting the TAM to be the active
controller.
n The TAM functions are now available and are listed, along with any limitations. For
example, if Automatic Fault Isolation were selected from the Diagnostics Menu, the ID
string would be changed to
HP8561E.
For an HP 85613, all TAM diagnostics can be used
on an HP 85623, except for Manual Probe Troubleshooting.
You can now execute any of the TAM functions listed without further computer interaction.
n Press
NNSNNN
CONTROL
to execute an unlisted TAM function. This changes the ID string in
EEROM back to HP8562E, and shows the complete menu of available TAM functions.
Note
The analyzer will always behave like the model number emulated from the last
TAM function, even though the ID string in the EEROM was changed back
to HP8562E. The analyzer will not revert back to an HP 85623 until power is
cycled, but that is not yet necessary.
n Before exiting the TAM I/F SW program, press RESTORE DUT
IDS;
.
Note
The amount of free disk space for the system mass storage file location will
decrease over time, since a data file is created for each HP 85623 used with
this program. Once a repair is completed for a given HP 85623, its associated
data file can be purged. A good rule of thumb is to purge any data file which
is more than 1 month old.
TAM
Requirements
For the TAM to function properly, certain parts of the spectrum analyzer must be operating
properly. These include the CPU, parts of the program ROM and program RAM, the
keyboard and keyboard interface, and the display.
Even though the TAM communicates to the operator via the display, some display problems
can be troubleshot using the TAM. This is possible by using the Print Page softkey. Even if
the display is dead, Print Page is still active. Refer to Chapter 13, “Display/Power Supply
Section,” for instructions on using the TAM when the display is not functioning.
7-12 General Troubleshooting