Tektronix RSA3300A, Service Manual

Page: 114 / 284

Adjustment Procedures
5- 4
RSA3303A & RSA3308A Service Manual
If you use an Agilent 437B power meter to create flatness correction files for the
signal generators (Items 1 and 2), you have to store the calibration factors for a
power sensor in the power meter. There are two ways to store calibration factors:
H
Storing calibration factors manually
H
Storing calibration factors through the analyzer
For information on storing calibration factors manually in the power meter, refer
to the power meter user’s guide. When you store calibration factors through the
analyzer, use the following procedure.
Equipment
Required
One power meter (Item 6)
One GPIB cable (Item 10)
One 720 K or 1.44 MB, 3.5 inch DOS-compatible disk,
if you load calibration factors from a floppy disk.
1.
Make a text file on PC with the following format for a power sensor:
# NO=(sensor ID number: 0 to 9)
# SENSOR=(type of the sensor)
# SERIAL=(serial number of the sensor)
# REFCF=(ref cal factor)
(frequency)=(cal factor)
...
Information about these items is on the surface of the power sensor, except
the sensor ID number which you specify. Input the calibration factors for the
test or adjustment frequency range.
An example is shown below (frequency range: 0.1 to 9 GHz).
# NO=2
# SENSOR=HP8485A
# SERIAL=3318A16046
# REFCF=99.0
0.1e9=99.1
2e9=98.1
4e9=97.1
6e9=96.5
7e9=96.2
8e9=96.0
9e9=95.8
Save the file with the extension of .cal (for example, sensor2.cal ). You can
load the file to the power meter using a floppy disk or through network.
Storing Cal Factors in the
Power Meter