Agilent Technologies 8935 Series, Руководство пользователя

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164 Chapter 7
Periodic Adjustments
Running the System Power Calibration Program
Running the System Power Calibration
Program
This adjustment program is not found in ROM of the Test Set. This
program resides on a PCMCIA Memory Card, part-number
E6380-61811. It has to be downloaded from the memory card.
This program generates system power calibration factors for the Test
Set. The purpose of this program is to generate calibration factors for
the RF Input/Output Section module, high power attenuator, and
cables. This assures that the Test Set will meet its power measurement
accuracy specifications after repair.
An RF signal generator and a power splitter produce two signals with
the same power level. One signal is measured by the power meter, the
other is applied to the input of the Test Set. The program measures
these levels at selected frequencies and then generates calibration
factors so the Test Set readings match the power readings. These
calibration factors are stored in the Test Set.
Communication between the active instrument(s) is through the Test
Set’s GPIB port. An optional printer can be connected to the Test Set’s
GPIB, serial, or parallel port. Typically this is done from the Printer
Setup field of the SOFTWARE menu screen.
To run the System Power Calibration program:
1. Connect GPIB cables from the Test Set to the signal generator and
power meter.
2. Insert the PCMCIA Memory Card, P/N E6380-61811, into the Test
Set’s memory card slot.
3. Press
Menu
to access the SOFTWARE MENU screen.
4. Select the field under
Select Procedure Location:
5. Select
Card
under the
Choices
: menu.
6. Select the field under
Select Procedure Filename:
7. Select
SYSPWR0
8. Select
Run Test
(key
k1
).
9. Follow the instructions on the screen.