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Adjustment Procedures
5-54
2715 Spectrum Analyzer Service Manual
Configure the Test System (CONFIG). The CONFIG program generates a table that
describes the test equipment being used and its respective GPIB addresses. The
program also creates a file for the power sensors, containing the calibration
factors to be used at each frequency. It also provides a means to customize the
software to work with a signal generator not supported by the software.
To start the program to configure the test system type:
CONFIG<Return>
The main menu will be displayed with the following selections.
Create a New System Configuration
List the New System Configuration
Exit to DOS
Select Create a New System Configuration and you will be asked to specify the
following:
H Signal source. (If you select User Defined Signal Generator, you will be
prompted to describe the generator frequency range, amplitude range, and so
forth. Refer to the next topic User Defined Signal Generator).
H Power Meter used.
H Identification code for Power Sensors. (This is an arbitrary code of your
choice. Three power sensors are used; select HP8482A for your first sensor,
select HP 8484A or HP 8481D for the second sensor, and select HP8483A for
the third sensor.)
H Power Sensor calibration factors (in %) from the data printed on the power
sensor.
NOTE. When entering the data, you are ask to enter the 50 MHz Reference
Calibration Factor (RCF) first. Then enter the remaining data, starting with the
lowest frequency and increasing to highest, including the 50 MHz data if
available.
When entering data (for example 50 MHz), type 50e6 or 50000000.
If you wish to examine the configuration you have just created, select List a New
System Configuration. This will display the system configuration.
NOTE. When using the HP 438A power meter, connect the 50 Ω sensor
(HP8484A or HP8481D) to Channel A, and the 75 Ω sensor (HP8483A for 75 Ω
system) or 50 Ω sensor (HP8482A for 50 Ω system) to Channel B.