HI. PLEASE IGNORE THIS THREAD THIS IS A FALSE REPORT. MY HI AND LO LO MODE IS OK. I THOUGHT HI MODE WILL BE INDICATED NEAR BUTTON MENU (WHITE BACKGROUND) BUT HI AND LO LO MODE IS INDICATED JUST UNDER THE GRAPH PLOT. SO ITS MY MISTAKE. THERE IS NO PROBLEM WITH MY HI/LO LO MODE. sorry i have to use capital letter since there is no formatting available in this forum to highlight my point and this flat view forum make it difficult to see the latest comment. Cheers.