Getting Started 1
Keysight U3401A User’s and Service Guide 21
Stacking the U3401A
The U3401A is shipped with specially designed anti-slip protective bumpers on 
the front and rear panel. The multimeters will not slide off when stacked on top of 
each other. 
To be able to stack the U3401A multimeters, ensure the attached bumpers are in 
correct orientation. See Figure 1-1.
Figure 1-1 Stacking the U3401A