Download HP 8901B Service vol..

Model 8901B
Instrument Changes
5. Software date code: 70.1986 (2608A to 2642A)
ROM part numbers:
ROM 1,08901-80087
ROM 2,08901-80088
ROM 3,08901-80089
Change 12 adds Special Function 32 which alters several default conditions for specialized
applications. Special Function 32.0 sets the “normal” defaults. Special Function 32.1 sets the
“special”defaults (RF power resolution 0.001 dB and minimum audio frequency resolution 0.1
Hz). Special Function 32.2 displays the status of this special function.
Change 20 updates the original firmware released for the Option 030 for more efficient
operation. The new firmware is compatible with all instruments.
6. Software date code: 149.1986 ( 2 W A to 2702A)
ROM part numbers:
ROM 1,08901-80090
ROM 2,08901-80091
ROM 3,08901-80092
Change 21 allows for displaying the previously entered frequency when displaying RF Power
Calibration Factors.
Change 22 prevents the instrument when in Tuned RF Level range to range calibration from
generating a 10 d B error.
Change 23 adds increased “ERROR 01” limits up to rt 100 k H z for the testing of drifting signal
generators (when in Track Mode) Tuned RF level.
7. Software date code: 351.1986 (2718Aand Above)
ROM part numbers:
ROM 1,08901-80105
ROM 2,08901-80106
ROM 3,08902-80107
Change 24 updates the firmware t o increase averaging (special function 32.1) and to reduce
settling time when making power meter measurments.
7-3. CABINET PARTS COLOR CHANGE
(2912A and above)
NOTE
Serial prefix 2912A changes the color of the instrument covers and accessories. The old color cover and accessories are no longer availiable. If your
instrument has serialprefires2911A and below, and you must replace one
of these parts, we recommend that you order the full set of covers and accessories. Affected cabinet parts are MP3-12, MP14,MP18, and MP27, (see
Table 6-3).
reti. 15JUN90
7-3