Agilent Technologies 6000 Series User Manual page 268

8 Reference
268
2 Press Utility&Options&Rear Panel&Ref Signal.
3 Use the Entry Knob and the Ref Signal softkey to select 10 MHz
input.
A black locked padlock icon will appear at the top of the
display.
10 MHz input mode selected
If the externally supplied sample clock varies greater than 0.5%
from 10 MHz a soft unlock will occur. The oscilloscope will
continue to acquire data but the lock symbol in the upper right
part of the display will become a red unlocked padlock icon.
If the externally supplied sample clock signal is lost, a hard
unlock will occur. The lock symbol in the upper right part of the
display will become a red unlocked padlock icon and the
oscilloscope will stop acquiring data. The oscilloscope will
resume sampling when the externally supplied sample clock
becomes stable again.
10 MHz unlock icon and system stopped
Reference signal locked
10 MHz unlock icon
6000 Series Oscilloscope User's Guide