Velleman projects HPS140 User manual - Manual (Page 7)

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‘Hold’-function
The scope has two memories and one hold screen. The two memories are stored even after power
off. Press the ‘hold’-button briefly to freeze the screen
To store:
1- Press and keep the ‘hold’-button to store the frozen screen until MEM1 appears
2- Your signal is stored in MEM1, if a signal was previous stored, this signal is moved to MEM2
3- Press the ‘hold’-button briefly to release the screen for measurements
Use the markers and recall the memory
Press the ‘hold’-button briefly
Now two menu screens can be recalled
1- Press the menu button briefly to call the short menu
OR
2- Keep the menu button pressed to call the extended menu
3- Press the menu button briefly to select an item
4- Use the up or down buttons, to change the selected item
Using the short menu you can move the signal markers for voltage
and time. To recall a memory (if used) select "memory", then press
up or down to switch between:
Memory 1 > Memory 2 > Current Frozen screen…
Using the extended menu you can additionally:
- Set the “x10” probe readout
- Change the ‘time’ marker readout setting (time or frequency)
- Move the signal in X position
- Change the display contrast
- Select ‘time’ or ‘voltage’ marker