45  /  72 
 
6. To delete the name in the name input area, press Switch Focus To softkey to switch to Name Input 
Area. Press the Delete softkey continuously to delete the character on the left of the cursor one by one. 
Turn V0 to move the cursor position. 
7. Press the Save softkey to enter the file name. You will see a file or folder named “DSOXXXX01”. 
2.9.4.2. Delete a file or folder 
This operation is only valid in external storage. 
1.  Insert  the  USB  storage  device,  press  the  Save  softkey  in  “Save/Recall”  menu  to  enter  the  Save 
function menu. 
2. Press the Type softkey, and then turn the Multifunctional Knob to select one type. 
3. Use the SaveTo softkey to external location. Press Save softkey and into File Manager interface. 
4. Turn the Multifunctional Knob V0 to select the file or folder to be deleted, and then press the Delete 
softkey. Then the file or folder will be deleted.   
2.9.4.3. Rename a file or a folder 
This operation is only valid in external storage. 
1.  Insert  the  USB  storage  device,  press  the  Save  softkey  in  “Save/Recall”  menu  to  enter  the  Save 
function menu. 
2. Press the Type softkey, and then turn the Multifunctional Knob to select one type. 
3. Use the SaveTo softkey to external location. Press Save softkey and into File Manager interface. 
4. Turn the Multifunctional Knob V0 to select the file or folder, press the Rename softkey, and then 
refer to the descriptions in “Create a new file” to create a new file name. 
2.10. Measure System 
The oscilloscope displays graphs of voltage - time and can help to measure the displayed waveform. 
There  are  several  ways  to  take  measurements,  using  the  graticule,  the  cursors  or  performing  an 
automatic measurement. 
2.10.1. Scale measurement 
Graticule: This method allows you to make a quick, visual estimate and take a simple measurement 
through the graticule divisions and the scale factor. 
For example, you can take simple measurements by counting the major and minor graticule divisions 
involved and multiplying by the scale factor. If you counted 6 major vertical graticule divisions between 
the minimum and maximum values of a waveform and knew you had a scale factor of 50mV/division, 
you could easily calculate your peak-to-peak voltage as follows: 
 6 divisions x 50mV/division = 300mV.