To Create A Waveform Using Multiple, Measured Traces - Agilent Technologies 89410A Operator's Manual

Creating Arbitrary Waveforms

To create a waveform using multiple, measured traces

Arbitrary waveforms that contain more than 4096 samples of complex or
8192 samples of real data are considered long waveforms. To create a long
waveform using measured data, you must use multiple traces (a waterfall
or spectrogram display).
1.
Initialize the analyzer and select the Vector instrument mode:
Press [ ], [
Instrument Mode
89410A: [
input section (0-10 MHz)
89441A: [
RF section (0-10 MHz)
Press [ ].
Preset
Press [
Instrument Mode
2.
Connect your signal to the analyzer (this example uses the analyzer's source to
provide a 1 MHz fixed-sine signal).
Connect the SOURCE output to the CHANNEL 1 input.
Press [ ], [
Source source on
3.
Set the analyzer's frequency span to include all components of your signal. If
possible, use a cardinal span to ensure the arbitrary source can output the
maximum number of samples (for details, see ''To output the maximum
number of samples'' later in this chapter).
Press [ ], [
center
Frequency
Press [ ], kHz.
span 39.0625
4.
Create a contiguous waterfall or spectrogram display that contains
time-domain data.
See ''To create a contiguous waterfall or spectrogram display.''
5.
Save the contiguous waterfall or spectrogram data into a data register:
Press [ ], [
Save/Recall
6.
View the data register contents on trace B (this step is optional):
Press [ ], [
B
Measurement Data
Press [ ], [
Display waterfall setup
7.
Configure the analyzer to measure from the input channel instead of the
time-capture buffer:
Press [
Instrument Mode
8.
Turn on the arbitrary source:
Press [ ], [
Source source type
Press [
arbitrary], [Return
Press [
].
source on
The analyzer displays ''Loading arb source from register D1'' and
6-4
], then press:
receiver
].
].
], [ ].
Vector
].
], MHz.
1
], [ ], [
save more save trace buffer
], [ ], [
data reg D1] .
], [ ].
waterfall on
], [ ], [
measure from input remove capture
], [ , [
arb data reg], [D1 ]
Return
].
''Arbritary Source length: XXX samples.''
].
into D1
].
].