Analyze Wavefor
morTraceData
4. From the result
ing side-bezel menu,
push Recall Mask from File.
Your ma sk text file should have an “.msk” file name extension and use the following format:
:REM "Initialize the custom mask"
:MASK:CUSTom
INIT
:REM "Mask Setup Information"
:MASK:USER:LABEL "Cu stom Mask o f STS-1"
:MASK:USER:
AMPLITUDE 1.0000
:MASK:USER:VSCALE 20 0.0000E-3
:MASK:USER:VPOS -2.5 000
:MASK:USER
:VOFFSET 0.0E+0
:MASK:USER:HSCALE 4. 0000E-9
:MASK:USER:HTRIGPOS 318.1000E-3
:MASK:USE
R:WIDTH 29.5500E-9
:MASK:USER:RECORDLEN GTH 1000
:MASK:USER:TRIGTOSAM P 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:US
ER:SEG1:POINTS -7.5 000E-9,1.50 00,-7.5000E -9,100.0000E-3,-5.1656 E-
9,100.0000E-3,-1.353 6E-9,500.00 00E-3,-1.35 36E-9,1.2000,7.2750E-9, 1.1000,15.9 036E-
9,1.2000,15.9036E-9, 500.0000E-3 ,19.7156E-9 ,100.0000E-3,22.0500E-9 ,100.0000E-
3,22.050
0E-9,1.5000
:MASK:USER:SEG2:POIN TS -7.5000E-9,-500 .0000E-3,22 .0500E-9,-500.0000E-3, 22.0500E-9, -
100.0000E-3,13.4214E -9,-200.000 0E-3,13.421 4E-9,500.0000E-3,11.678 0E-9,800.00 00E-
3,7.275
0E-9,900.0000E-3,2.8 720E-9,800. 0000E-3,1.1 286E-9,500.0000E-3,1.1 286E-9,-
200.0000E-3,-7.5000E -9,-100.000 0E-3
:MASK:USER:SEG3:POIN TS 0.0E+0,0.0E+0
:MASK:
USER:SEG4:POINTS 0. 0E+0,0.0E+0
:MASK:USER:SEG5:POIN TS 0.0E+0,0.0E+0
:MASK:USER:SEG6:POIN TS 0.0E+0,0.0E+0
:MASK:
USER:SEG7:POINTS 0. 0E+0,0.0E+0
:MASK:USER:SEG8:POIN TS 0.0E+0,0.0E+0
Createacustommaskviaaremoteinterface. To use remote interface commands to create and edit a mask, s ee
the MSO4000B, DPO4000B , and MDO 4000 Series Oscilloscope Programmer M anual.
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 A fter Time Set the test to stop after a set amount of time elapses.
158 MDO4000 Series Oscilloscopes User Manual
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