How All Auto-Adjust Procedures Begin - HP 8642A Operation And Calibration Manual

Model 8642AjB
Adjustments
How All Auto-Adjust Procedures Begin
At the beginning of each Auto-Adjust routine you are requested to enter dnta. The Module Tabs
in Section 8 contain the Auto-Adjust Procedures, but for the first time lIser, the beginning of the
Auto-Adjust routines is given below with some added explanation.
I. Connect the required equipment to tile HP 8642 via HP-IB.
2. Verify or change the HP-IB addresses of the external equipment as previollsly shown in Auto-
Adjust Routines.
3. On the HP 8902 (or HP 890 I B) insure that: the HP 1I722 Cal Factors have been loaded into
memory, and the RF Power mode has been Zeroed and Calibrated.
4. Key in: PNST PRESETI on the HP 8642.
5. Key in: ISHIFTllspcq ~ to enter Service Mode.
6. Key in:
@] @] ~ to make the H P 8642 a system controller.
7. Key in:
@]@] [!:§
to initiate the Auto-Adjust mode.
"A BIG HOWDY FROM HP
.GO"
and "WELCOME TO SELF-CAL
.G1"
will appear on the
display momentarily. (From now on the Back Space key, when llsed during a data entry prompt,
will abort the Auto-Adjust Routine.)
8. "ENTER ROUTINE NUM .G8000" will prompt you to key in one of the routines from Table 5-3.
If you have incorrectly entered data, enter an extra digit and then you will be able to re-enter the
corrent data.
For example: You wanted to enter 9 for the Routine Number but accidently pressed 8. Press
any numeric key and "INVALID DATA ENTRY .G7002" will appear in the display. Now you
can re-enter the 9. This approach will work with any Auto-Adjust data entry.
Table 5-3.
A lI{o-AdiIO{ RUII{II/('
Nlfll/bcl'.).
Module Routine Number
A2
9
A6 3
A11 1
A12
2
A13 4
A14
8
- -
5-3