The N1500A software uses node locked software security, which requires both a license file and a USB software security key (dongle) for the software to run. Here's how to redeem your license file
Before you begin, verify you have received these items
Software CD (alternatively, you can download software from software download website. See http://www.keysight.com/find/Materials
Software Entitlement Certificate
USB Key (dongle)
You will also need an Internet Connection and an Email Account
Please contact Keysight if you are missing anything.
Log on to the Keysight Software Licensing System and follow instructions to redeem your license file. The URL for the website can be found on your Software Entitlement Certificate.
When asked for Order and Certificate numbers, enter these numbers from your Software Entitlement Certificate
When asked for your Dongle Serial Number, enter the number printed on your key. USB key serial numbers always start with "9-".
You do not have to enter an Instrument serial number.
When you complete the redemption process, your license (N1500A.lic) file will be emailed to you.
Save the .lic file on the PC. Do not open and re-save the file, as this could corrupt the encrypted keyword.
When starting the N1500A software, the License Finder dialog will appear. Click Browse and navigate to the *.lic file location.