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HP4402.book : chapter3.fm 11 Wed Apr 23 15:29:05 1997
Menu Reference
Front Panel Menu Reference "Frequency/Cal Fac" Menu
HP EPM-442A User’s Guide 3-11
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.
Table 3-1
•
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 , , and
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.
Sensor
Model
Sensor Calibration Table
Selected
Sensor Calibration Table
Not Selected
Frequency Cal Factor Frequency Cal Factor
HP 8480
series
power
sensors
Frequency can
be entered.
Default value
is 50 MHz.
The Cal Factor is
obtained from the
sensor calibration
table but can be
overridden by this
softkey.
Frequency
cannot be
entered.
The Cal Factor can
be entered. Default
value is 100%.
HP E-series
power
sensors
Not Applicable Not Applicable Frequency can
be entered.
Default value
is 50 MHz.
The Cal Factor
cannot be entered, it
is obtained from the
EEPROM in the
power sensor.
Frequency
Cal Fac
A Freq
B Freq
A Cal Fac
B Cal Fac
A Freq
B Freq
A Cal Fac
B Cal Fac
A Freq