To set up transient analysis
This procedure demonstrates several transient signal characterization
methods. The signal is loaded from disk into a data register and selected
as an arbitrary source signal. The signal simulates a transmitter turning on.
1. Select the baseband mode and initialize the analyzer:
Press [
Instrument Mode
], [
receiver
], then press:
89410A: [
input section (0-10 MHz)
].
89441A: [
RF section (0-10 MHz)
].
Press [
Preset
].
2. Load the source signal file XMITR.DAT into data register D1:
Insert the Signals Disk in the analyzer’s disk drive.
Press [
Save/Recall
], [
default disk
], [
internal disk
] to select the internal disk drive.
Press [
Return
] (bottom softkey), [
catalog on
] to display the files on the disk.
Rotate the knob until the file XMITR.DAT is highlighted.
Press [
recall trace
], [
from file into D1
], [
enter
].
3. Connect the SOURCE output to the channel 1 INPUT.
4. Turn on the source and select arbitrary signal D1:
Press [
Source
], [
source on
], [
source type
], [
arbitrary
].
5. Select a window and increase the display resolution by increasing the number
of frequency points:
Press [
ResBW/Window
], [
main window
], [
gaussian top
]
Press [
Return
], [
num freq pts
], 801, [
enter
] (or use the increment key).
6. Set the display to show spectrum and time information:
Press [
Display
], [
2 grids
].
Press [
B
],[
Mea surement Data
], [
main time
] (toggle to
ch1 for 2-channel
analyzer).
Characterizing a Transient Signal
3-2
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