18_histogram

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Histograms February 2005
Page 4
Histogram Setup
Tool Features
Data Selection Graphical Data Display
Bin Data
Statistical Data Display & Select
Input Data Control
Histograms February 2005
Page 12
Analyzing the Results
Histogram ASCII Report File (3)
Population Statistics Mean = 5.46208 Sigma = 0.00210186 MinPeak = 5.46032 MaxPeak = 5.4675 DeltaPeak = 0.007176 Mean = 5.46208 Sigma = 0.00210186 MinPeak = 5.46032 MaxPeak = 5.4675 DeltaPeak = 0.007176 Test Statistics Low Limit = -1e+99 High Limit = 1e+99 Pass = 25 Fail =0 Yield % = 100.00 Cp = 1.5859e+101 Cpk = 1.5859e+101
Histograms February 2005 Page 6
Analyzing the Results
Graph Type - Population Distribution
Histograms February 2005
Page 7
Analyzing the Results
Graph Type - Difference
Agilent 93000 SOC Series User Training Part I
Histograms
In this Lesson . . .
• Histogram Overview • Histogram Setup • Analyzing the Results
Histograms February 2005
Plot Data Selection Test Statistics (Pass/Fail Set & View)
Histograms February 2005
Page 5
Analyzing the Results
Graph Type - Population Density
Legend Solid yellow line = mean value Solid red line = test limits Broken white line = std dev (sigma) Empty purple bar = bin highlighter
Histograms February 2005
Page 8
Analyzing the Results
Histogram Tool Overlay
1. Click Overlay button
2. Click Set
Histograms February 2005
Page 9
Analyzing the Results
1. Click File àOpen

Opening an Offline Datalog File
2. Select Datalog type
3. Locate the file
4. Click Open
Histograms February 2005
Page 10
Analyzing the Results
Histogram ASCII Report File (1)
HISTOGRAM REPORT Title: Output DC High Test Data, Q0 pin Date: 26.08.04 Time: 16:01 Comment: Output DC High test, 25 samples Data File: /home/mike/histo_data1 Stop Bin: 25/26 Test Suite: OutputDC Result Type: Pin Value Test Name: Output DC High Pin: Q0 Result No: 0 Samples: Bin Width: MinVal: MaxVal:
Page 2
Histogram Overview
What?
• A statistical analysis tool
Why?
• Graphically display data distribution
How?
• Calculates statistical info such as mean,std dev,etc. • Processes Raw ASCII Data, GDF or EDF
Histograms February 2005 Page 13
Histograms February 2005
Page 3
Histogram Setup
General Steps
4. Click ‘Auto Adjust All’
1. Click Debug Tab -> Histogram icon
2. Select data source 3. Select Data Control options
Histograms February 2005
25 0.0005 5.46 5.4685
Page 11
Analyzing the Results
Histogram ASCII Report File (2)
5.46025 5.46075 5.46125 5.46175 5.46225 5.46275 5.46325 5.46375 5.46425 5.46475 5.46525 5.46575 5.46625 5.46675 5.46725 5.46775 5.46825 5 |***** 4 |**************** 6 |**** 2 |************* 1 |**** 2 |** 0 |** 0 |** 1| 1| 1| 0| 0 |** 0| 2 |** 0| 0|