32 Keysight P9241/42/43A Oscilloscopes Startup Guide7 Make a MeasurementInput a SignalThe first signal to input to the oscilloscope is the Probe Comp signal. This signal isused for compensating probes.1 Connect an oscilloscope probe from channel 1 to the Probe Comp terminal onthe front panel.2 Connect the probe's ground lead to the ground terminal (next to the ProbeComp terminal).Using the Soft Front Panel (SFP) InterfaceThe Keysight InfiniiVision P924xA SFP has the same user interface as otherstandalone Keysight InfiniiVision oscilloscopes. While standalone oscilloscopeshave keys, softkeys, and knobs—obviously different than the modularoscilloscopes—the display interface was also designed to be used with touchscreens and connected USB mice, and it is just as easy to use with a mouse on theWindows operating system.The main differences between using the interface on a standalone oscilloscopeand a modular oscilloscope are:• Instead of pressing front panel keys to open softkey menus, you use the top-leftblue Main Menu button.• Instead of pressing softkeys, you click the softkey label buttons.• Instead of turning knobs to adjust scales, offets, delay positions, trigger levels,and cursor positions, there are clickable up/down, increase/decrease iconbuttons that appear after clicking these values. Also, you can drag waveforms,trigger levels, and cursors.Consider ergonomics when positioning the keyboard, monitor, and mouse.Access the Built-In Quick HelpSoft Front Panel (SFP) help for the USB oscilloscope is different than in atraditional Windows application. Instead of a Windows HTML Help file you accessthrough a Help menu, the USB oscilloscope's SFP help is the same quick helpinformation that is built-in to standalone InfiniiVision oscilloscopes.To access the built-in quick help, press and hold the left-mouse button over asoftkey label button.