Tektronix MDO4054-3, Руководство пользователя

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Analyze Waveform or Trace Data
4. From the resulting side-bezel menu,
push
Recall Mask from File .
Your mask text fi le should have an “.msk” fi le name extension and use the following format:
:REM "Initialize the custom mask"
:MASK:CUSTom INIT
:REM "Mask Setup Information"
:MASK:USER:LABEL "Custom Mask of STS-1"
:MASK:USER:AMPLITUDE 1.0000
:MASK:USER:VSCALE 200.0000E-3
:MASK:USER:VPOS -2.5000
:MASK:USER:VOFFSET 0.0E+0
:MASK:USER:HSCALE 4.0000E-9
:MASK:USER:HTRIGPOS 318.1000E-3
:MASK:USER:WIDTH 29.5500E-9
:MASK:USER:RECORDLENGTH 1000
:MASK:USER:TRIGTOSAMP 7.2750E-9
:REM "Mask Points are Defined in Volts and Seconds"
:REM "Points in a segment must be defined in counter clockwise order"
:REM "A single point at 0,0 indicates an empty segment"
:MASK:USER:SEG1:POINTS -7.5000E-9,1.5000,-7.5000E-9,100.0000E-3,-5.1656E-
9,100.0000E-3,-1.3536E-9,500.0000E-3,-1.3536E-9,1.2000,7.2750E-9,1.1000,15.9036E-
9,1.2000,15.9036E-9,500.0000E-3,19.7156E-9,100.0000E-3,22.0500E-9,100.0000E-
3,22.0500E-9,1.5000
:MASK:USER:SEG2:POINTS -7.5000E-9,-500.0000E-3,22.0500E-9,-500.0000E-3,22.0500E-9,-
100.0000E-3,13.4214E-9,-200.0000E-3,13.4214E-9,500.0000E-3,11.6780E-9,800.0000E-
3,7.2750E-9,900.0000E-3,2.8720E-9,800.0000E-3,1.1286E-9,500.0000E-3,1.1286E-9,-
200.0000E-3,-7.5000E-9,-100.0000E-3
:MASK:USER:SEG3:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG4:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG5:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG6:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG7:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG8:POINTS 0.0E+0,0.0E+0
Create a custom mask via a remote interface.
To use remote interface commands to create and edit a mask, see
the MSO4000B, DPO4000B, and MDO4000 Series Oscilloscope Programmer Manual.
Set Up the Test
To set up the limit or mask test, connect the test source to the oscilloscope. For a limit test, set the test source horizontal and
vertical settings to the same values that were used to create the limit test mask. Push the lower-bezel menu
Set Up Test
item and set the following:
Setting Description
Source Channel Select the channel to be tested
Violation Threshold Set the number of violations that can occur before a test status is considered failed.
Stop After Waveform Set the test to stop after a set number of waveforms.
Stop After Time Set the test to stop after a set amount of time elapses.
158 MDO4000 Series Oscilloscopes User Manual