//==============================================================================
//
// Title:		XTDR Changelog
// Release:		2.8.0 (09/03/20)
//
// Copyright:	(c) 2020, HYPERLABS INC. All rights reserved.
//
//==============================================================================


VERSION 2.8.0 (09/03/20)
  * BUGFIX: amplitude calibration distortion on channel pairs with divergent steps

VERSION 2.7.0 (05/20/19)
  * BUGFIX: prevent software from loading settings for different instrument models


VERSION 2.6.0 (06/09/16)
  * BUGFIX: eliminated dribble-up of first few points during TDR waveform averaging


VERSION 2.5.4 (12/18/15)
  * BUGFIX: accuracy improved on S11 of HL22xx


VERSION 2.5.3 (12/10/15)
  * BUGFIX: error applying filter to active waveforms


VERSION 2.5.2 (10/24/15)
  * BUGFIX: intermittent error with cursors not updating on every acquisition


VERSION 2.5.1 (10/16/15)
  * BUGFIX: occasional waveform acquisition during channel change


VERSION 2.5.0 (10/12/15)
  * IMPROVEMENT: multithreaded acquisition, allowing for a much more responsive user interface
  * FEATURE: software LED-style indicator of when instrument is actively acquiring or calibrating
  * DEPRECATION: multithreading removes the need to turn off auto-calibration in any situation; toggle removed


VERSION 2.0.5 (07/31/15)
  * FEATURE: Insertion Loss (S21) and Return Loss (S11) measurement modes
  * CHANGE: Data logging (CSV, PNG, print) options moved to File menu


VERSION 1.3.1 (04/08/15)
  * FEATURE: Set zero reference point allows user to exclude TDR and fixtures from horizontal measurement
  * FEATURE: Sets baseline of waveform to 0 mV, regardless of polairty, instead of the previous -250 mV or 250 mV

  * BUGFIX: Corrected calculation of edge delay in TDT
  * BUGFIX: Improved horizontal accuracy of cursor-based zoom


VERSION 1.2.1 (02/18/15)
  * FEATURE: extends compatible HL22xx instruments to 75 ns rise time


VERSION 1.2.0 (01/27/15)
  * FEATURE: save/load/reset enviornmental settings
  * FEATURE: rise time filter can be toggled on/off, and the filter adjusted


VERSION 1.1.2 (10/30/14)
  * BUGFIX: refine calibration procedure to produce better accuracy
  * BUGFIX: properly scale startup window on 25 ns instruments


VERSION 1.1.1 (10/23/14)
  * BUGFIX: acquire new waveform on Y scale change, Y unit change
  * BUGFIX: minor adjustment (< 1%) to vertical amplitude calculation methods


VERSION 1.1.0 (10/13/14)

  * FEATURE: Option to use either internal or external instrument calibration
  * FEATURE: Better, smarter autoscaling

  * INTERFACE: Significant redesign of user interface, some controls moved to menus

  * BUGFIX: Various small bugs related to save/recall waveforms