2 Features and Functions
38 Keysight U1241B and U1242B User’s and Service Guide
MinMax Recording
The MinMax operation stores the maximum, minimum, and average input values 
during a series of measurements. When the input goes below the recorded 
minimum or maximum value, the multimeter beeps and records the new value. 
The multimeter also calculates an average of all readings taken since the MinMax 
mode was activated. From the multimeter’s display, you can view the following 
statistical data for any set of readings:
– MAX: highest reading since the MinMax function was enabled
– MIN: lowest reading since the MinMax function was enabled
– AVG: the average or mean of all the readings since the MinMax function was 
enabled
– MAXMINAVG: present reading (actual input signal value)
Refer to the following steps to use the MinMax Recording mode:
1 Press   for more than one second to enter the MinMax Recording mode. 
The multimeter is now in the continuous mode or non-data hold (non-trigger) 
mode. 
2 The beeper sounds when a new maximum or minimum value is recorded.
3 Press   to scroll through the maximum, minimum, average, and present 
readings. The MAX, MIN, AVG or MAXMINAVG annunciator lights up 
correspondingly to the displayed readings.  
4 Press   for more than one second to exit the MinMax Recording mode. 
– The average value is the true average of all measured values taken in the 
MinMax Recording mode. 
– If an overload is recorded, the averaging function will stop and the average 
value becomes OL (overload).
– The auto power off feature ( ) is disabled in MinMax Recording mode.