User manual

Getting Started 1
U3401A Quick Start Guide 7
Press , to disable the secondary display.
8
Math operation
The U3401A has six math operations — dBm, Rel (relative), MinMax,
Comp (compare), Hold and Percentage (%).
NOTE
The multimeter has an increased key response time (0.6 s to 1 s) when in dual display
mode. You may need to press the selected key until the multimeter responses.
+
Press to select dBm measurement.
+
Press to select Comp math operation.
+
Press to enable Percentage math operation.
Press to enable Hold math operation.
Press to enable the MinMax math operation.
Press to select the Rel math operation.