User`s guide
8 Using N8480 Series Power Sensors
204 N1911A/1912A P-Series Power Meters User’s Guide
Procedure
1 Ensure the power sensor is disconnected from any signal source.
2 Refer to the connection requirements in Table 8- 15 and ensure the 
sensor is ready for connection to the Power Reference.
3 Check the current reference calibration factor setting by pressing 
,  . The value is displayed under the channel   
softkey. 
Does this setting match the value for the sensor? (The power sensor 
reference calibration factor can normally be found above the calibration 
factors table on the power sensor body.)
4 To change the settings, press the channel  . The reference 
calibration factor pop up window is displayed as shown in 
Figure 8- 138. Use the numeric keypad to enter the required value in 
the  Ref Cal Factor  pop- up menu.
Figure 8-138Reference calibration factor pop-up window
5 Press 
 to complete the entry.
Now zero and calibrate the power meter/sensor combination as follows:
6 Press   and the channel   softkey. The Zeroing pop- up is 
displayed. 
7 Connect the power sensor to the POWER REF output.
8 Press   and the channel   softkey to start the calibration 
routine. The Calibrating pop- up is then displayed.
REF CFs
Ref CF
REF CF
%
Zero
Cal










