To set up time gating
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 a burst signal from the Signals Disk into a register and play it through the
source:
Insert the Signals Disk in the internal disk drive.
Connect the SOURCE to the channel 1 INPUT.
Press [
Save/Recall
], [
default disk
], [
internal disk
].
Press [
Return
], [
catalog on].
Rotate the knob to highlight PMBURST.DAT
Press
[recall trace
], [
from file into D1
], [
enter
].
Press [
Source
], [
source on], [source type
], [
arbitrary
].
3. Select a window:
Press [
ResBW\Window
], [
main window
], [
gaussian top
].
The display should now appear as below.
A 5 MHz burst carrier, phase-modulated with a 25 kHz signal.
Making On/Off Ratio Measurements
4 - 2
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