HP 1652B Getting Started Manual page 382

The Trigger menu (TRIG key) controls the selection of trigger modes,
input source, level, slope, and auto-trigger. Selection of the arming
source and run mode is also controlled in this menu.
Access to the oscilloscope calibration menu is done through this menu.
When the calibration field is selected, new menus will appear that
guide you through the calibration process. The calibration procedure is
found in Appendix D.
The Waveforms menu (DISPLAY key) controls the display mode,
connect the dots, and grid on/off. Also included in this menu is the
Auto-measure function and Marker measurement criterion set-up.
At power up, the System Configuration menu defaults the oscilloscope
to on. All main oscilloscope menus can be selected from the front
panel keys.
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HP 16528/16538
Front-Panel Reference
The Oscilloscope
22-7