Firmware revision updates:- 2014-10-9 version 3.01 - Fix incorrect average range in autorange feature - Keysight rebranding, change identity to Keysight and Keysight Logo 2013-8-3 Version 1.95 fixed an issue present in the previous release. - The Filter setup menu item was amended to include 3 options: DC, DCAC and OFF. The factory default option is set to DC to enable Filter during DC measurement. The Filter function attenuates AC signals to help you read the correct DC measurement from a mixed signal. - Fix incorrect low pass filter icon under dBm dual display mode. - Fix incorrect display when autohold feature exit from data logging view under temperature function. - Fix incorrect average auto range in average feature under ACV function. 2011-9-14 Version 1.64 - Initial release