The iEM3000 series meters provide a large amount of information on basic MBus, including streams and power in each phase. Enter settings To enter the settings, press and hold the OK and ESC buttons for a few seconds. The factory password is 0010. Scroll to each digit with the arrow key and confirm with OK. Setting the gear ratio of the measuring transformers Use the arrow button to scroll to CT&VT Ratio, press OK to set.