Tenma 72-7615 Manual page 10

Digital storage oscilloscope
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Note: If the stored waveform is on external disk press F5 to select between DSO and
USB and select USB having inserted the drive into the USB port.
5.
The recalled waveform will be displayed on the screen.
6.
Press CANCEL to go back to the previous menu.
7.
Press REF B and select the second signal source for the math function repeating
step 3
Note: To measure and observe such waveforms you can compare the current waveform
with the reference waveform for analysis.
8.
Press REF to display the reference waveform menu. See following table:
Functions Menu
Reference waveform
Callback
Introduce
To store to a selected location choose between 1 and 10. To use external USB, plug
in the U disk and press F5 to select the USB memory.
To save a waveform press SAVE menu.
Horizontal system setup
The horizontal rotary control is used to change the graticule (time
base) and trigger the horizontal position of the memory (triggering
position).
The vertical centre point above the horizontal orientation of the
screen is the time reference point of the waveform. Changing the
graticule will cause the waveform to increase or decrease in size
relative to screen centre. When the horizontal position changes,
the position in respect to the waveform triggering point is also
changed.
Horizontal position
Adjust the horizontal positions of the channel waveforms
(including math waveforms). Resolution of this control changes
with the time base.
Horizontal scaling
Adjusting the main time base i.e. sec/div. When time base
extension is on you can use the horizontal scaling control to
change the delay scanning time base and change the window width.
Functions Menu
Main time base
Window extension
Holdoff
Setup
REF A
Set reference waveforms as REF A or REF B
REF B
To call our 10 storage positions selected using the
-------
USB
Press F5 to select the file stored in root of USB
connected
Select using multi function control and press to
USB not
connected
Setup
--
2 - if window extension is enabled, press main time
--
--
10
Notes
multi-function control and press to confirm
confirm.
Notes
1 - enable main time base
base to disable window extension
Enable time base
Adjust Holdoff time

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