User Manual
Getting Started 
17 
1.3  Input Power Requirements 
The 2540B, 2542B, 2540B-GEN, and 2542B-GEN DSOs do 
not require a line fuse when different voltage lines are used 
for powering the instrument. The power input requirements 
are: 
Input Voltage Range: ~99 V to 242 VAC 
Input Frequency: 47 Hz to 440 Hz 
Rating: 50VA Max. 
Before connecting the instrument from an AC outlet, please 
verify that the above power input requirements are met. 
Connecting incorrect AC power input to the instrument is 
dangerous and may damage the instrument, voiding its 
warranty. 










