Version:         [2.58]
Last Revised:    [05/25/2011]
Products:        DPO4032/DPO4034/DPO4054/DPO4104
                 MSO4032/MSO4034/MSO4054/MSO4104

This firmware supports the DPO4000 and MSO4000 Series oscilloscopes.

Note: Starting with firmware version 2.15, there are some features and
bug fixes that do not apply to DPO models with a serial number of
C020000 or less. Those items are denoted with a '+'.
(DPO4000 Series products with serial numbers <C020000
require a hardware upgrade to support these features.)

History
-------

v2.58	5/25/2011

Defects fixed:
	- Restored backward compatibility for Programmatic Interface commands
	LESSthan and LESSThan
	MOREthan and MOREThan
	:TRIG:B:UPP:CH 

v2.56	5/06/2011

Defects fixed:
	- Some non-volatile memory settings, including number of power-ups and 
	operating time, were not correctly restored after a firmware update 
	with v2.54.  After a v2.54 update, these settings will not represent 
	accurate data and cannot be restored.

        With v2.56, non-volatile settings are correctly restored if the user 
has not already upgraded to v2.54.  If a unit was updated 
        to v2.54, this version is unable to restore the original settings.

v2.54	4/14/2011

New Features:
	+ Serial trigger and bus decode for MIL-STD-1553 standard.  
	  (Requires DPO4AERO application module.)
	  Includes the following:
		- triggering, decode and search.

	- Application Modules have licenses that can be transferred between an 
Application Module and an oscilloscope. 
		- Permits the use of more than 4 applications simultaneously.
		- Enables usage of an application on the oscilloscope while the 
physical application module can be removed and stored in a secure location.
	
	- Limit and Mask testing Application
	  (Requires the DPO4LMT application module)
        Includes the following:
        Limit Testing, Telecommunication and computer Standard Masks, Custom 
Masks.
	  
	- SPI Trigger increased to 50 Mb/s 

	- Timeout Trigger

	- DPO OFF (zero persistence)

	- Solid Line Graticule
	
	- Socket Server Support.

	- Recall of waveforms in CSV file format.

Defect Fixed:

	- Correct various RS-232 and I2C problems in Event Table.
	- Fix excessive digital channel jitter in Zoom mode.

v 2.48  12/01/2009
	New features:
	+ Serial trigger and bus decode for USB2.0 serial standard.  
	  (Requires DPO4USB application module.)
	  Includes the following:
		- Low-speed triggering, decode and search;
		- Full-speed triggering, decode and search;
		- High-speed decode and search.

	- Waveform Histograms.  Includes the following:
		- Vertical and horizontal histograms;
		- Measurements on waveform histogram data.

	- New Cursor Model with the following:
		- New Cursor Menu (press and hold Cursor front panel button);
		- Cursor functions all conveniently contained in Cursor menu.

	Performance Improvements:
      - Some programmatic interface commands have been added for backward
	  compatibility with older instrument control software.
	
	Defects Fixed:
	- Problem using the P5205 probe with the TPA-BNC adapter.
	- Video Out timing does not conform to the VESA Monitor Timing standard 
(Version 1.0, Rev 0.8).


V 2.30  6/10/2009
    Defects Fixed:

        - Digital waveform display is now correct with slow triggers.
        - Input impedance is now set correctly with a TPA-BNC Adapter.

V 2.28  2/9/2009
    New Features:
	- Support for the DPO4PWR Power Analysis application module. Includes
	  the following measurements:
	    - Power Quality
	    - Switching Loss
	    - Harmonics
	    - Ripple
	    - Modulation
	    - SOA (Safe Operating Area)
	+ Serial trigger and bus decode for the I2S Audio standard
	  (Requires DPO4AUDIO application module.)
	  Includes the following formats:
	    - I2S
	    - Left-justified
	    - Right-justified
	    - TDM
	- PictBridge printer support
      - Trigger frequency readout 
      - Save All Waveforms to File
      - Animated Progress Indicators.
    Performance Improvements:
      - Improved cursor readout resolution
      - Analog channel acquisition rate is improved when digital
	  channels are turned on
      - The Probe Setup menu has been improved to provide enhanced control
	  of current probes to support power measurements.
      - Some programmatic interface commands have been added for backward
	  compatibility with older instrument control software.

V 2.15  4/4/2008
    New Features:
	+ Serial trigger and bus decode for LIN standard.
	  (Requires DPO4AUTO or DPO4AUTOMAX application module.)
	+ Serial trigger and bus decode for FlexRay standard.
	  (Requires DPO4AUTOMAX application module.)
	- SPI Bus word size can now be specified from 4 to 32 bits. Previously
	  it was hardcoded to 8 bits.
	- SPI bit order can now be specified as most significant or least
	  significant first.
	+ SPI bus now supports 2-wire decode and trigger by allowing idle time
	  framing to be specified.
	- CAN bus now triggers on Bit Stuffing Error.
	- CAN bus now supports custom bit rates.
	- RS232 bus now supports 9-bit data.
	- RS232 bus now supports custom bit rates.
	- Delay On/Off control added to Acquire menu.
	- HiRes acquisition mode now available with Roll Mode.
	- Save Waveform Gating - save only a portion of a waveform.
	- Screen annotation was added to the Utility->Display menu. Previously
	  this functionality was only available over the programmatic
	  interface via the MESSAGE commands.
	- Automatic timing measurements now work on digital channels.
	- Four new "counting" measurements: positive/negative pulse count
	  and rising/falling edge count.
    Performance Improvements:
	- I2C missing ACK now displayed only for actual errors.
	+ CAN bus sample point range increased to 5-95% (was 25-75%).
	- CAN bus waveform now shows packet errors.
	- RS232 bus data values can now be entered in ASCII format.
        - Reset Horizontal Position button in Acquire menu is now a bottom-
	  bezel action button rather than invoking a side menu.
	- Various improvements to Autoset behavior in corner cases such as
	  when there are no input signals.
	- Some side menus now use knob-controlled lists that cover up less
	  of the graticule area.
	- The measurement menu now shows graphical and textual "help"
	  descriptions of the various measurements.
	- All menus that have adjustable thresholds now have a list of
	  presets for easier setting to commonly-used values.
	- The Logic Trigger and Setup & Hold Trigger menus have been greatly
	  simplified.
	- The Add Printer menu now remembers previously entered information,
	  making it much easier to add multiple similarly-named printers.
	- Various cosmetic improvements in the user interface.
	- Improvements to Trigger Level Accuracy test during calibration.
	- Improved instructions in factory calibration menus.
	- Reference waveform Ref Details menu now shows the sample rate and
	  record length of the reference waveform.
	- Waveform intensity and persistence algorithms have been
	  significantly improved.