Mask Testing 16
Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide 281
To manually modify a mask file
You can manually modify a mask file that you created using the Automask
function.
1 Follow the steps 1-7 in “To create a mask from a "golden" waveform
(Automask)" on page 275. Do not clear the mask after creating it.
2 Attach a USB mass storage device to the oscilloscope.
3 Press the [Save/Recall] key.
4 Press the Save softkey.
5 Press the Format softkey and select Mask.
6 Press the second softkey and select a destination folder on your USB mass
storage device.
7 Press the Press to Save softkey. This creates an ASCII text file that describes the
mask.
8 Remove the USB mass storage device and connect it to a PC.
9 Open the .msk file your created using a text editor (such as Wordpad).
10 Edit, save, and close the file.
The mask file contains the following sections:
• Mask File Identifier.
•Mask Title.
• Mask Violation Regions.
• Oscilloscope Setup Information.
Mask File Identifier The Mask File Identifier is MASK_FILE_548XX.
Reset Statistics Note that statistics are also reset when:
• Mask Test is switched on after being switched off.
• Clear Mask softkey is pressed.
• An Automask is created.
Additionally, the accumulated time counter is reset whenever the oscilloscope
is run after the acquisition was stopped.
Clear Display Clears acquisition data from the oscilloscope display.
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