Tektronix DMM4020 Digital-Multimeter, DMM, VFD-Multiple segment, 20000 counts CAT II 600 V DMM4020-A1 Data Sheet

3-20 

If you are in the autorange mode when Touch Hold is selected, you will autorange to the 

correct range. If you are in the manual range mode when Touch Hold is selected, you will 

be in the fixed range you were in when Touch Hold was selected.  
The Touch Hold function can be combined with the minimum/maximum modifier to hold 

and update only when a new minimum or maximum value is detected. To force the 

display to update, with Touch Hold selected press I for less than 2 seconds. 
The Meter allows you to choose the minimum response level needed for Touch Hold to 

capture and display a measurement. You can choose from the following four response 

levels: 

•

  Level 1 (5 % of range)  

•

  Level 2 (7 % of range) 

•

  Level 3 (8 % of range) 

To change the response level, press Q and I. The response level currently selected 

(1, 2, 3 or 4) appears on the primary display. Press U or V to step to the desired 

response level, then press R for two seconds to set the level and return to the primary 

display. You can return to the primary display without changing the response level by 

pressing any button except R, U or V. 

The minimum/maximum (MIN MAX) modifier stores the minimum and maximum 

inputs of your measurements. 
Selecting the MIN MAX modifier turns off autoranging and locks in the present range, so 

make sure you are in the correct range before pressing N. If you press U or V 

after pressing N, the Meter exits the MIN MAX modifier mode. 
To store the minimum and maximum inputs: 

1.  Press N to select the MIN MAX modifier. 

When N is first pressed, the minimum and maximum values are set to the 

reading displayed. MAX is shown and the display indicates the latest maximum 

reading. 

2.  Press N again to display the minimum reading. MIN is shown and the display 

indicates the latest minimum reading. 

3.  Press N again to display either the minimum or maximum reading. M 

is shown and the display indicates either the minimum or maximum reading. 

4.  To exit MIN MAX mode, press and hold N for 2 seconds. 
5.  To observe the actual readings without resetting the stored values, press Q and 

then select the same measurement function that you selected for the primary 

display.