146 Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide
14 Cursors
 
The Y1 cursor is the short-dashed horizontal line and the Y2 cursor is the 
long-dashed horizontal line.
The Y cursors adjust vertically and typically indicate values relative to the 
waveform's ground point, except math FFT where the values are relative to 0 dB.
In XY horizontal mode, the Y cursors display channel 2 values (Volts or Amps).
When active, the Y1 and Y2 cursor values for the selected waveform source are 
displayed in the softkey menu area.
The difference between Y1 and Y2 (ΔY) is displayed in the Cursors box in the 
right-side information area.
To make cursor measurements
1 Connect a signal to the oscilloscope and obtain a stable display.
2 Press the [Cursors] key.
The Cursors box in the right-side information area appears, indicating that 
cursors are "on". (Press the [Cursors] key again when you want to turn cursors 
off.)
3 In the Cursors menu, press Mode; then, select the desired mode: