HP EPM-441A User Manual page 110

Menu Reference
Front Panel Menu Reference "Frequency/Cal Fac" Menu
Frequency
Cal Fac
The softkey menu structured to this hardkey affects the channel setup.
Press this hardkey to access the "Frequency/Cal Fac" menu which allows
you to enter the frequency of the signal to be measured or the calibration
factor. Depending on the type of power sensor connected, and whether or
not a sensor calibration table is selected, the text on some softkeys may
appear grayed out. This indicates that they are not relevant in the power
meter's current mode of operation. Table 3-1 details the relevant softkeys
in various modes of operation.
Sensor Calibration Table
Sensor
Model Frequency
Freq
HP 8480 Frequency can
series be entered.
power Default value
sensors is 50 MHz.
HP E-series Not Applicable
power
sensors
•
Freq
Press this softkey to enter the frequency of the signal to be
measured on channel A, in the range of 0.1 MHz to 999.999 GHz.
The default value is 50 MHz. Use the
hardkeys to change the frequency. To confirm your choice press the
appropriate frequency unit. Entering a frequency using this
softkey is only possible when you have a sensor calibration table
selected or you are using an HP E-series power sensor.
3-10
Table 3-1
Selected
Cal Factor
Cal Fac
The Cal Factor is
obtained from the
sensor calibration
table but can be
overridden by this
softkey.
Not Applicable
Sensor Calibration Table
Not Selected
Frequency Cal Factor
Freq Cal Fac
Frequency The Cal Factor can
cannot be be entered. Default
entered. value is 100%.
Frequency can The Cal Factor
be entered. cannot be entered, it
Default value is obtained from the
is 50 MHz. EEPROM in the
power sensor.
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HP EPM-441A User's Guide