Please click on the links below and follow instructions for the latest updates.
Download the latest ZIP file containing utilities and instructions to update the Model 4500B from a USB Flash Memory Device.
Download the latest ZIP file containing utilities and instructions to update the Model 4540 via GPIB, LAN or USB.
Download the latest ZIP file containing utilities and instructions to update the Model 4530 via an RS-232 serial port.
Download the updated ZIP file containing utilities, software and instructions for the 52000 series.
Download the lastest ZIP file containing utilities and instructions to create a 4400A/4500A "install" diskette using any PC.
Download firmware version 1.2.8 for the PIM 31 Passive Intermodulation Tester