Agilent Technologies 4291B, Быстрый старт

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P erforming User
Dened Fixture
Compensation
USER DEFINED xture compensation reduces the error caused by the
interpolation used in a FIXED xture compensation.
1. Set the analyzer to your required setting.
2.
Press 4 CAL 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
FIXTURE COMPEN .
3.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
COMPEN MENU .
4.
T oggle
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
COMP POINTS [FIXED] to
NNNNNNNNNNNNNNNNNNNN
[USER] .
5. P erform the required xture compensation using the FIXED
compensation procedure described in the applicable Quick Start
chapter .
6.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DONE: COMPEN .
7. V erify the \Cmp " notation is displayed on the left of the screen.
User Dened Fixture
Compensation
Description
After a FIXED xture compensation (the default setting), you can
change the stimulus (for example , the frequency and OSC level)
as long as you measure the same DUT or a DUT of the same size .
The analyzer performs the compensation measurements on points
xed across the full sweep range . The eective value for the points
between the measured points is calculated using the interpolation
method.
On the other hand, after a USER DEFINED xture compensation,
you can measure more accurately . The analyzer performs the
compensation measurements on the same points as your current
stimulus setting. Therefore , the error caused by interpolation is
reduced. In the USER DEFINED xture compensation, if you change
the stimulus , you should compensate again. Otherwise , the analyzer
may not measure correctly .
Note
Y ou cannot select FIXED POINT Compensation, when you have done
User Dined calibration.
P erforming
A veraging
The averaging function reduces the noise . There are two averaging
functions , one is point averaging and the other is sweep averaging.
P erforming P oint
A veraging
1. Press 4 Bw/Avg 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
POINT AVG FACTOR .
2. Enter the number of times to average . Then press 4
x1
5 .
3.
T oggle
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
POINT AVG on OFF to
NNNNNNNNNNNNNNNNNNNN
ON off .
Features Common to All Modes 6-3