What's New



About Us

Contact Us

Statistical Process Control Software

Detailed Specs Sheet - Contents

What Makes AT-Sigma SPC The Best Choice?

  • Real Time automated SPC using virtually any database
  • ISO-9000 support through on-line process documentation (HTML, Windows Helpfiles, Adobe Acrobat )
  • Easy to learn, flexible, quick, with powerful results
  • Simultaneous multiple variable analysis in overlapped MDI windows for quick viewing & troubleshooting
  • Accesses data and stores it in any database allowing infinite data points and sophisticated fast queries and sorts in charts. Databases like Paradox, Oracle and others, as well as ODBC sources, make for enterprise wide data sharing and security
  • Fully customizable closed loop reaction, dispositioning and trigger events
  • Normal and non-normal (Johnson) analysis gives actual and estimated capability and yield
  • Fully network secure and sharable using existing data base infrastructure
  • Data entry can be automatic with AT-Sigma Data Pipe (RS232 Serial), or AT-Sigma W-Import (text files), built in grid or any entry building application (Visual Basic, C, Delphi, etc.)

Data Management / Network Features

  • All analysis is performed on database tables
  • Virtually all database types supported (Paradox, dBase, MS Access, ODBC, SQL Tables)
  • Supports client/server SQL systems (ORACLE, SYBASE, Informix, Interbase and other SQL servers)
  • Full record locking and contention control for local databases or networked shared environments
  • Configuration files and data can be located on a network for easy enterprise wide maintenance
  • Most configuration is stored in industry standard formats that allow automated updates of specs
  • Charts can be produced by the result of a query. This allows a chart sorted by Operator, Date/Time, Machine or any other descriptive information. Full AND/OR conditionals based on ANSI-92 SQL even for local Tables
  • Query By Example simplifies setting up queries for control charts in the Product Filter. The result of the query can be viewed at that time to verify the query and the selected data.

Data Acquisition / Data Entry

  • AT-Sigma Data Pipe - serial (RS232) data
  • Automatic data acquisition is supported for virtually all serial gages and devices using our DATA PIPE's universal serial driver (optional)
  • AT-Sigma Data Pipe can stream serial data directly to a database and trigger auto SPC Analysis
  • Supports TIR (total indicator reading) function. This allows continuous monitor of the gage and calculates Minimum and Maximum values, which are both available for storage.
  • AT-Sigma W-Import - text file collector
  • Automatically detects and imports text (ASCII) files in comma separated value format (CSV) or user defined format
  • Automatically notifies AT-Sigma SPC, or other DDE aware program that processing is needed
  • Full parsing, Date/Time stamping, fixed/variable length, delimited or not, and many other options to handle all text files
  • Sophisticated file management handles contention and auto archives data to mainframes or other locations based on number of records or age of data
  • Built-in spreadsheet type entry supports keyboard or barcode
  • Custom entry through any form design package: Visual Basic, Paradox for Windows, C++ or similar package
  • Communicates through Windows DDE for universal compatibility and connectivity
  • Auto-entry through AT-Sigma Data Pipe and AT-Sigma W-Import with time stamp, date stamp, parsing of input lines
  • Manual Data Entry Module
  • Calculated fields on data entry screens
  • Can collect up to 35 variables via scrolling entry form. Database thresholds are unlimited.
  • Includes support for pick list fields where an operator is presented with a set of choices for a field and the field is filled with the selection. This reduces errors in entry. (e.g Scratch and scratched are not grouped together)
  • Allows a ‘GroupID’ automatic incrementing field. This inserts a unique number for each sample sub-group so the grouping in the database can be easily seen. Especially good for variable sample sizes or when data is added or removed at later dates.
  • Ability to collect by part or by characteristic. That is collecting all measurements for each part or measuring the same data on each part then going to the next dimension.
  • Redo function that allows an operator to start the group over from scratch

Control Chart Features

  • X-Bar and Range
  • X-Bar and Sigma
  • Individuals and Moving Range
  • np (number of defectives)
  • p (percent of defectives)
  • c (number of defects)
  • u (percent of defects)
  • Most of the above control charts can be processed using the following options:
    • Standard
    • Nominal
    • Short-Run
    • Group charts
    • Median chart
  • Moving average, moving individual control chart types
  • Individual data points plotted on any control chart
  • Spec limits plotted on any control chart
  • Can fix control chart centerline to target value
  • User set control limits or auto-calculated
  • User scale or auto-scale
  • Charts include links to details, called Tags, that display process changes, causes, actions and comments
  • Charts change color to depict current status (red, yellow)
  • Fully customizable colors, size and symbols on all charts
  • View charts and data on the same screen while collecting data
  • Context switching based on incoming data allows unlimited control chart sets
  • Ability to ignore subgroups then re-calculate the control limits.
  • Sample size can be up to 400 for fixed and variable sample size charts.
  • Support for Group Charting

Capability Analysis

  • Mean, Standard Deviation, Skewness, Kurtosis, 99.73% points
  • Normality testing - user can select sample ranges that determine the normality test to use. Select from Shapiro-Wilk, Anderson-Darling, and Skewness-Kurtosis
  • Non-normal approximations are used
  • Normal, LogNormal, non-normal distributions
  • Johnson curves provide the non-normal information
  • Defective Parts per million, ppm (actual, estimate)
  • Estimated % out of spec (total, upper, lower)
  • Actual % out of spec (total, upper, lower)
  • Cp, Cpk, Cpm, 99.73% points

Alarms / Notification

  • Real-time notification for all control charts, out of control or run / trend conditions:
  • Electronic Mail (SMTP, POP3, MAPI or cc:Mail) Status and control charts can be sent to other users on the network
  • Email (MAPI) improved to include Cause, Action, Comment and other details in the automatic message.
  • Audio warning (tone or WAV file allows voice instruction or condition)
  • Equipment shutdown through user procedure
  • Pager (modem required).
  • Closed Loop Reaction
  • Real time data can be configured to require the operator to enter corrective action information
  • Corrective action input: Cause of problem, Action taken, comment. 32,000+ user defined selections
  • Tags appear on control chart for easy viewing
  • Pareto chart of causes or actions
  • User defined online reaction plan can contain drawings, photos, video, voice and hypertext jumps to guide operator through proper measurement and corrective steps. HTML, Windows HLP file, Adobe Acrobat or other document viewers supported
  • Operator Help files can now be in HTML. We include our own internal viewer to limit ability to jump to the links in the file. You can also use an external browser of your choice. This eases maintenance since many HTML editors are available including all current versions of Word processors (use ‘Save As…HTML').

Closed Loop Reaction/Out of Control, Runs/Trends Tests

  • These tests determine when an alert condition occurs. Each variable has full control of the sensitivity of the tests applied to it
  • Standard Western Electric tests (8)
  • User customizable rules tests (8)
  • Turn any test on/off for any variable
  • Disposition of Sub-group Test based on % out of spec or sample average vs. limits.

Short Run / Target Charts

  • Short run SPC requires using a target value for each measurement to normalize values between product types. Each variable can have a lookup value of an existing field. For example, change the target value for Width based on Customer field
  • Based on Lookup table
  • Each measurement independently configured
  • Matches based on existing data in record (no user entry needed)

Other Valuable Features

  • Three levels of security: password protection for setup, data editing and viewing functions
  • Toolbar for instant access to commands
  • Form fill data entry through Paradox, VB, Delphi or any other application. Links via DDE
  • Chart by customer through Query
  • On-line help on using AT-SIGMA SPC
  • Customizable on line help for operator assistance, ex:
    • Product Information
    • What to do if out of control
    • Who to call
    • Drawings of Products
  • View Chart data details
  • Long Term Gage capability
  • Links to Oracle, SQL Servers and dBase
  • Security access to protected features though password entry
  • Refer to on screen Glossary for explanations of statistical terms
  • Exclusive 32 bit features:
    • Long file names
    • Increased performance
    • Integration with Win95, WinNT
  • Gage R&R
    • standard Gage R&R calculation in a dynamically configured spreadsheet look.
    • Collects from serial gages or manually into grid.
    • Up to 20 parts, 20 measurements, 20 operators.
    • Results stored to a database for advanced searching and queries.
  • Management Summary Sub-System
    • shows current color-coded state of each collection operation on the network. Red, yellow, or green indicators.
    • Checking for inactive collection. If the operation is overdue for new data color turns to ‘inactive’
    • Email and pager notification can be generated automatically if condition is yellow, red or inactive.
    • Includes information about the last (current) point and indication of history.
  • Setup Wizard simplifies installation and table setup.


  • Presentation quality visually stimulating screen views and hard copies
  • Control Charts
  • Histograms
  • Status summary window
  • Four-in-One graphs in a window (Ctl, Hist, summary)
  • Status Grid - shows condition of all charts without displaying graphs
  • Multi-window MDI format for multiple view of any chart type and any variable simultaneously
  • Trend Chart snapshots of the process at discrete time periods with capability indices
  • Scatter plots with regression fit (R, R@, SEE, y-intercept and slope)
  • Table Grid shows raw data in a spreadsheet like view to allow editing and browsing records
  • Tag view shows all cause/action/comments assigned to plot points on control charts
  • Printing: can print selected or all charts on the desktop in 1 or 2 charts per print page
  • Each measurement independently configured
  • Matches based on existing data in record (no user entry needed)


  • Email, Fax, Voice, and On-Call (up to 24 hours/day) Support plans offered.
  • FAQs, updates and patches on Web site
  • Custom installation and consulting for non-standard environments and gages.

System Options

  • 16-bit for Windows 3.X, OS/2, Win95, WinNT
  • 32-bit for Windows95, NT

Contact Information

Tel (661)872-4807
Fax (661)872-3316
Postal address 2001 Columbus Street, Bakersfield, CA 93305 USA
Email information@atsigma.com