256 Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide20 Utility Settings• Preserve — to make the oscilloscope remain in the acquisition mode youhave chosen when the [AutoScale] key is pressed.Setting the Oscilloscope's ClockThe Clock Menu lets you set the current date and time of day (24-hour format).This time/date stamp will appear on hardcopy prints and directory information onthe USB mass storage device.To set the date and time, or to view the current date and time:1 Press [Utility] > Options > Clock.2 Press the Year, Month, Day, Hour or Minute softkey; then, rotate the Entry knob toset to the desired number.The hours are shown in the 24-hour format. So 1:00 PM is hour 13.The real-time clock only allows selection of valid dates. If a day is selected and themonth or year is changed so the day is invalid, the day is automatically adjusted.Setting the Rear Panel TRIG OUT SourceYou can choose the source of the TRIG OUT connector on the rear panel of theoscilloscope:1 Press [Utility] > Options > Rear Panel.If the Rear Panel softkey does not appear, it means neither mask testing nor thewaveform generator is licensed, and oscilloscope triggers are sent to TRIG OUTby default.2 In the Rear Panel Menu, press Trig Out; then, turn the Entry knob to select from:• Triggers— Each time the oscilloscope triggers, a rising edge occurs onTRIG OUT. The rising edge is delayed 30 ns from the oscilloscope's triggerpoint. The output level is 0-5 V into an open circuit, and 0-2.5 V into 50 Ω.See Chapter 10, “Triggers,” starting on page 125.