Menu Reference
Front Panel Menu Reference "Zero/Cal" Menu 
3-34 Agilent E4419B User’s Guide
 
The softkey menu structured to this hardkey affects the channel setup.
Press this hardkey to access the “Zero/Cal” menu which allows you to zero 
and calibrate the power meter. Refer to “Calibrating the Power Meter”, on 
page 2-8 for further information.
•  
Press this softkey to adjust channel A for a zero power reading 
with no power applied to the power sensor. Refer to “Zeroing and 
Calibrating the Power Meter”, on page 2-7 for further information.
•  
Press this softkey to adjust channel B’s internal circuitry for a 
zero power reading with no power applied to the power sensor. 
Refer to “Zeroing and Calibrating the Power Meter”, on page 2-7 
for further information.
•  
Press this softkey to adjust both channel A’s and channel B’s 
internal circuitry for a zero power reading with no power supplied 
to the power sensor. Refer to “Zeroing and Calibrating the Power 
Meter”, on page 2-7 for further information.
•  
Press this softkey to access a menu which allows you to calibrate 
the power meter. Calibration sets the gain of the power meter 
using a 50 MHz oscillator as a traceable power reference.
■  
Press this softkey to calibrate channel A with the connected 
power sensor. The POWER REF output is used as the signal 
source for calibration and is automatically switched on during 
this procedure.
■  
Press this softkey to enter a reference calibration factor for 
channel A. A value in the range of 1% to 150% can be entered. 
The default value is obtained from the sensor calibration table 
if one is selected, otherwise it is 100%. Use the  ,  , 
 and   hardkeys to change the value. To confirm your 
choice press  . This softkey cannot be selected when you are 
using an Agilent E-series power sensor.
Zero
Cal
Zero A
Zero B
Cal
%
HP4402.book  Page 34  Thursday, November 30, 2000  1:39 PM