E4981B Firmware Update Procedure

Required Equipment

• Personal Computer
• USB drive, formatted to FAT32 or NTFS

Step 1. Create /e4981x/update/ folder in the USB drive, if the folder does not exist.
        Note: The folder name in the USB drive is case sensitive.

Step 2. Download e498xx_xxxxx.ctp and save it under /e4981x/update folder in the USB drive.
        Note: Only one .ctp file should be saved under the folder. In case multiple .ctp files exist under the folder, it will
              result in an error in Step 5.

Step 3. Insert the USB drive into USB port on the front panel of the instrument.

Step 4. Press “System”

Step 5. Press Softkey “Service” > “More” > “Update Software” > “OK”

Step 6. Wait about 5 minutes.

Step 7. Confirm the instrument starts automatically. So that means the firmware update completes successfully.