Agilent Technologies E4418B User Manual page 147

Note
Agilent E4418B User's Guide
n
Filter
Press this softkey to access a menu which allows you to switch the filter
off and on, set the filter length, select automatic or manual mode and
switch step detection off and on.
u
Filter Off On
Press this softkey to toggle the filter value on or off. The default is
"On". The filter value is set using
Mode AUTO MAN
u
Press this softkey to toggle between the automatic (AUTO) and manual
(MAN) filter modes. In manual mode you enter the number of
measurements to be averaged. In automatic mode the number of
measurements averaged is based on the measured power and uses a
pre-defined look-up table. Refer to "Setting Averaging", on page 2-38
for further information.
Length
u
Press this softkey to enter the filter length. The filter is used to reduce
noise, obtain the desired resolution and to reduce jitter in the
measurement results. Use the
to change the value.
Step Det Off On
u
Press this softkey to switch step detection on or off. Step detection
reduces the settling time of the filter by re-initialising the filter after a
significant step (increase or decrease) has been detected in the
measured power. The default is "On".
•
Power Ref Off On
Press this softkey to switch the POWER REF output on or off. This output is
used as the signal source for calibration. This softkey is commonly used for
troubleshooting. The default is "Off".
During calibration the power meter automatically switches the power
reference oscillator on (if it is not already on), then after calibration it
switches it to the state it was in prior to the calibration.
•
Error List
Press this softkey to display any power meter errors and access a menu
which allows you to clear and scroll through any power meter errors. The
errors are viewed in a first in first out (FIFO) basis.
Clear Errors
n
Press this softkey to clear all the errors which are stored in the power
meter's memory.
Front Panel Menu Reference "System/Inputs" Menu
Length
, ,
Menu Reference
and hardkeys
3-25