Installation guide
Agilent Technologies E5500A Installation Guide
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Welcome to the E5500A Phase Noise Measurement System Series of
Solutions
3. Click Options, and then click License Keys.
NOTE The license key for your system is unique and may only be used with a
specific Agilent/HP 70420A Test Set serial number. The license key may be
found both on your license-key document and in the file “license_key.txt”
on the License_key floppy disk provided with your system.