HP 8530A, Руководство по эксплуатации и программированию, Страница: 188 / 439

Stimulus Controls Applicable to All Domains
Why use Number of Groups?
A group of sweeps consists of the number of frequency sweeps necessary to present data for
the current measurement. F or example , if in Ramp sweep mode with averaging on, the trace is
fully averaged by n+1 groups of sweeps , where n is the averaging factor . Number of Groups
can be used to signify that the measurement is complete . If the A veraging F actor is 16, then
press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NUMBER of GROUPS , enter 17, 4
x1
5 . When the measurement is complete , the receiver goes
into the Hold mode .
Using Step sweep or Frequency List, 1 sweep always equals 1 group because all necessary
data is taken at each frequency step . Regardless of the averaging factor you may enter
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NUMBER of GROUPS , 4 1 5 4 x1 5 for this conguration.
Coupled/Uncoupled Channels
Most features in the receiver are uncoupled, which means you can choose dierent settings in
each channel. Many Stimulus settings , however , are coupled (if you change a coupled setting in
one channel, it aects the other channel as well).
How to tell if a function is coupled
T o determine if any given function is coupled or uncoupled, make it the active function. Press
4
CHANNEL 1
5 , change the function value , and then press 4
CHANNEL 2
5 . If the active function value
shown for Channel 2 has also changed, the two channels are coupled. Otherwise the function
is always uncoupled and can be set independently . The HP 8530A K eyword Dictionary explains
whether any given function is coupled or uncoupled.
Setting Stimulus P ower
The following paragraphs describe controls for setting and monitoring RF power .
Figure 6-12. Source P ower Menu
Stimulus Functions 6-21