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Updated to 2.75 - Added 'Tune Apass' button on plot screen
Updated to 2.74 - Corrected oddity in M-Derived highpass data entry
Updated to 2.73 - Total rewrite of Cauer error trapping
Updated to 2.72 - Refined Design screen error trapping
Updated to 2.71 - Found and corrected error in Monte Carlo stepsize assignment
Updated to 2.70 - Complete rewrite of .CIR and .SUB file writers
Updated to 2.69 - Added SPICE subcircuit file writer and LTspice filter symbol (.ASY) writer
Updated to 2.68 - Added generic SPICE file (.CIR) writer
Updated to 2.67 - Force LTspice .ASC files to have periods for decimal places; cosmetic and minor interface upgrades
Updated to 2.66 - Increased plot X-axis divisions to 20; allowed negative jX values in editor
Updated to 2.65 - Added AutoScale button to plot and analysis pages; allowed diplexer design to go to 10 GHz
Updated to 2.64 - Corrected missing element in Manual Entry routine
Updated to 2.63 - Total rewrite and upgrade of diplexer routine
Updated to 2.62 - Found and corrected errors in page/screen sizes
Updated to 2.61 - Found and corrected error in file reader; updated editor, file writing and file reading
Updated to 2.60 - Added schematic display option to show the filter as it would be in a balanced configuration; improved erroneous-value entry handling in circuit editor
Updated to 2.59 - Clarified Cauer odd/even entry areas; polished design and editor pages
Updated to 2.58 - Added capability to change return loss reference value to editor page
Updated to 2.57 - Found and corrected error in transmission line math routine when line lengths are exactly 90 degrees; limited S11 and S21 to -120 dB
Updated to 2.56 - Found and corrected S11 and S22 phase error in Touchstone file writers (Versions 1 and 2)
Updated to 2.55 - Added bandpass filter modulation-response routine
Updated to 2.54 - Complete rewrite of transient-response routine
Updated to 2.53 - Added Entry Assistance screen; revision of Analysis screen
Updated to 2.52 - Found and corrected error in Cauer highpass design routine; other cosmetic upgrades
Updated to 2.51 - Complete rewrite of Wind Inductor routine
Updated to 2.50 - Rewrite of all subroutines for uniform appearance; limits-editing bugfix; many cosmetic upgrades
Updated to 2.49 - Complete rewrite of circuit editor and manual component-entry routines along with upgrades to schematic display and design inputs
Updated to 2.48 - Complete rewrite/update of inductor-specification routine
Updated to 2.47 - Upgraded plotting screens to show on the screen the point where the mouse-down datapoints are being taken; Smith Chart seriously upgraded
Updated to 2.46 - Upgraded Design page to prohibit problems resulting from missing bandpass/bandstop center frequency, or missing topology entry
Updated to 2.45 - Corrected file-reading and file-writing routines to ignore unused numbers in memory; corrected Cauer normalized-value readout
Updated to 2.44 - Upgrade normalized-value routine; added option to send normalized values to printer
Updated to 2.43 - Major upgrades to each of the routines on the Design page
Updated to 2.42 - Major upgrade to Smith Chart routine
Updated to 2.41 - Major upgrade to Monte Carlo routine
Updated to 2.40 - Changed overlay color scheme
Updated to 2.39 - Corrected erroneous saving of limits areas to file
Updated to 2.38 - Corrected error causing plot type to change unexpectedly
Updated to 2.37 - Corrected error in "specify inductor" routine
Updated to 2.36 - Major revision of Manual Component Entry and Editor pages, revised menu system, added aspect-ratio correction capability
Updated to 2.35 - Added toroidal-inductor turns calculator, Smith Chart aspect ratio correction capability and total re-write of menus
Updated to 2.34 - Refined LTspice file-writer
Updated to 2.33 - Changed order-entry to up/down button style; forced location of Last Session file
Updated to 2.32 - Discovered and corrected error in frequency printout for regions using comma for decimal
Updated to 2.31 - Added "Instant Help" button to the Design page to assist in Family selection
Updated to 2.30 - Added "Instant Help" buttons to the Design page to assist in Topology selection
Updated to 2.29 - Updated Help system
Updated to 2.28 - Added end-sections option to Constant-k family (this in addition to the M-derived family); updated Help system
Updated to 2.27 - Editor now disallows termination or resistor-value entries less than .01 ohms
Updated to 2.26 - Correct various plot top definition entry oddities
Updated to 2.25 - Add option to show "magnified" plot on Transmission graph to reveal detail in low-loss region.
Updated to 2.24 - Changes to design page to prevent design of families requiring passband ripple when no such entry is present.
Updated to 2.23 - Add M-derived family with up to five specifiable zeros; update Help system.
Updated to 2.22 - Eliminate ProLite option; miscellanous upgrades.
Updated to 2.21 - Rewrite of bandpass impedance-matching routine.
Updated to 2.20 - Add nominal-value plot(s) at end of Monte Carlo routine. Also allow overlays to be placed on top of Monte Carlo display.
Updated to 2.19 - Remove revision number checking, fix tuning mode error.
Updated to 2.18 - Added resistors to those elements used for the Optimization and Monte Carlo routines.
Updated to 2.17 - Added LTspice schematic-writing
Note: Tonne Software has no connection with Linear Technology Corp.
Updated to 2.16 - Total rewrite and expansion of bandpass Impedance Matching routine and associated Help system
Updated to 2.15 - Added tabulated-data file writing
Updated to 2.14 - Correct conditional errors for Optimizer maximum-allowed-time and limit-deletion
Updated to 2.13 - Correct subtle plot-color error in Monte Carlo and Optimizer routines; upgrade Exit message
Updated to 2.12 - Total rewrite of Diplexer routines and associated Help system; minor cosmetic text-size changes
Updated to 2.11 - Rewrite of Monte Carlo and Optimization routines; notice design changes and suggest saving prior to retrieving a new design; upgrade Help system.
Updated to 2.10 - Rewrite overlay plotting including simple deletion of overlay files; print all overlay files on hardcopy outputs (to duplicate screen); upgrade Help system.
Updated to 2.09 - Correct error in coupled-inductor component in the optimization routine; minor interface improvements.
Updated to 2.08 - Near-total rewrite of Plot page menu and Help graphics.
Updated to 2.07 - Printing problem resolved; nearly complete rewrite of menu and help system.
Updated to 2.06 - Cosmetic only; most text size as well as graphics now independent of screen resolution.
Updated to 2.05 - Add another error-trap to Cauer design.
Updated to 2.04 - Add error-trap to Cauer design.
Updated to 2.03 - All outputs to printer are now routed via Printer Selection windows.
Updated to 2.02 - Save-file (an internal operation) now forces use of a period for decimal delineation to allow operation in global regions which use a comma for decimal
Released as 2.01 - June 2004