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Factory
Selects the Factory calibration factor table. Pressing Factory and
the +/- key on the numeric keypad allows selection of a user-
defined table in addition to the factory table. This allows full factory
calibration to be active, and allows adjustments or corrections to be
entered in the user-defined table. If user table 1 was selected, the
menu would show ‘Factory+1’ and the Status box on the readout
display would show a warning ‘*’ sign on the Cal Factor line (bottom
text line in the box) to show that non-standard calibration is being
applied (CAL *F or CAL *V).
Enter
Confirms the selection.
%/dB
[CFUNITS]
Toggles the Current Cal factor display format from percentage to
dB, and back.
EDIT
[CFUADD
CFUSAV
CFUCT
CFUPT
CFULD
CFURD
CFUID]
Edit any of the available user calibration factor tables in the sensor.
Options available are CLEAR or PRESET the table, enter a new ta-
ble identity string, change or delete existing frequency/cal factor
data pairs, or enter new frequency/cal factor data pairs. All fre-
quency/cal factor data pairs can have both frequency and calibra-
tion factor value modified, except for the data pair at 50 MHz, which
can only have its cal factor value changed. All frequency/cal factor
data pairs can be deleted, but there must always be one data pair
remaining. If there is a data pair at 50 MHz, this will be the data pair
that will remain.
The user must ensure that the maximum number of cal factor data
pairs entered into a table is not exceeded. Sensors with a maxi
-
mum frequency of up to 40 GHz will hold 90 pairs, while sensors
with a maximum frequency of 50 GHz will hold 110 pairs.
Once all changes have been made, the SAVE soft key saves the
changed data to the sensor. If any user cal factor data is changed
and not saved, any attempt to exit the cal factor menu or select a
new table will result in a prompt to discard or save the changes.
FACTOR
[CFCAL]
When the Cal Factor Source is set to Manual, the operator is ex
-
pected to enter the calibration factor value in dB or % terms.
CAL
ADJUST
[CFADJ]
Sets a calibration factor to be used when performing a 0 dBm cali
-
bration and the calibration factor source is set to 'Manual.' This
value is the only factor applied when performing a 0 dBm reference
calibration. If the sensor calibration factor source is set to V/GHz or
Frequency, the sensor internal EEPROM correction value at 50
MHz is used.
SENSOR MENU OPERATION
NOTE
Manual Cal Factor
method only.
4-8 ML2430A OM
NOTE
Whichever set, or sets,
of cal factors are used,
the linearity and tem
-
perature correction re
-
mains active at all
times. Ensure the
power meter is pro
-
grammed with the fre
-
quency of the signal
being measured.