Here is how I came up with my scanning times. I have created a System called “Local”. In it I have two groups. Group 1 is my city\county freqs (quick key 1) and Group 2 has my surrounding county’s freqs (quick key 2). With both keys enabled, on my display I see two numbers, 1 and 2. As it scans group 1, the number 1 blinks. When it jumps to group 2, the number 2 blinks. I count the seconds as number 1 blinks then the seconds as number 2 blinks. Group 1 has 27 freqs in it and group 2 has 25 freqs in it. Group 1 blinks about 7 seconds then group 2 blinks for about 7 seconds. This is how I came up with the scan time. I may be way out in left field with this. I have a Pro2006 and as it scans through the same freqs or channels and it only takes a sec. How can you check a scan time on the 996 scanner?