3/20/92

IMPORTANT NOTE:
The following information is more up-to-date than the manual. Please
read carefully to find out about the new features.

The following are the new features in the 2.26 release:

*** THD display for Aspec function:
You can toggle the 'rms:' label in the Aspec function to display 'thd:'
(total harmonic distortion).

*** VGA graphics support:
IP(D) will startup in 640x480 resolution mode (16 colors) if a VGA card 
is detected.  The graph display is in a higher resolution and the text 
lines are more spaced than in the EGA resolution.

*** FFT function display:
To display an FFT function, simply select it from the function menu
underneath the display graph.

*** Digital Input/Output:
Turn digital input for channels 1 and 2, and channels 3 and 4 from
the configuration menu by choosing the Digital I/O box serial number
that the channels are connected to.  In the channel coupling menu
choose DigDC for digital DC coupling or DigAC for digital AC coupling.
Turn digital output on by flipping the output switch to Dig.
In the setup configuration menu, you can set the scale, sampling rate
and the delay for each channel.  Refer to your 2600DA User's Guide
for more information.

*** The way the file storage menu works has been slightly modified.
The file storage menu now keeps the last filename typed in by the user.
It does not get overwritten by the storage filename menu in the 
setup file.

*** Note to AST notebook users: 
The AST notebook processor speed should be set to HIGH (which is the default).
Otherwise, IP will fail to run.  The AST notebook setup menu can be accessed
by pressing the CTRL-ALT-ESC combination while booting up.



10/25/91

IMPORTANT NOTE:
The following information is more up-to-date than the manual. Please
read carefully to find out about the new features.

The following are the fixed problems in the 2.2 release:

- Problem concerning the LajerJet support has been fixed (resulted
  in blank page)
- The file storage field gets now updated when using the ALT-W key
  in combination with the automatic file increment
- Serial port overruns, resulting in loss of communication between
  the PC and the analyzer
- Zoom data and capture files work correctly
- Instantaneous data can be saved after triggering has stopped
- Timeout problem with AST in Turbo Mode


8/7/91

IMPORTANT NOTE:
The following information is more up-to-date than the manual. Please
read carefully to find out about the new features.

The following are the new features in the 2.22 release:

*** THE ON-LINE MANUAL SYSTEM:
The Instrument Program now includes a "hyperlinked," context sensitive
help system.  To activate the help system from the keyboard, press the
F8 key. Using a mouse, a two-button mouse click activates the help
system when the mouse cursor is anywhere but inside a plot grid.  You
will see the help screen pertaining to the currently highlighted menu.
The help system contains all of the information under "Using the
Instrument Program" in the Instrument Program User's Guide.

You can browse the help screens like a book by following the "next" and
"previous" links, or you can jump to a related topic by activating the
desired link in the text.  The on-line manual is more up-to-date than
the printed manual and we encourage users to refer to it.

* Users of previous Instrument Program versions note:
- The three-pages of help callable with the '?' key are no longer
  available.
- F8 is no longer a "hot" key; instead, pressing F8 activates the help
  system.
- The four lines of help are always turned on and cannot be turned off
  with the 'H' key.  See below for changes in the function storage list.

*** THE FUNCTION STORAGE LIST:
The function storage list has been moved to the setup screen of the
CONFIGURATION menu.  Drop-down menus let you select the function
type and channel number to be saved in a datafile for up to 20
functions.

To get to the storage list in the CONFIGURATION menu, press the 'C' key
twice, click the mouse on the 'Config' flag twice, or press the Ins key.
To quit the function storage list, press the 'C' key once, or click
the mouse on the 'Config' flag.

Note that the information in the printed manual referring to the
function storage list is out of date.

* Users of previous Instrument Program versions note:
The Ins key is now a shortcut key to get to the storage list; the Del
key has no assigned function.

*** LASERJET SCREEN DUMP:
In the CONFIGURATION menu, you can choose LaserJet as the Hardcopy Type
to get a screen dump on an HP LaserJet printer or compatible.

*** DATA STORAGE FUNCTION KEY:
Alt-W is a function key for data storage.  When you press Alt-W, the
current filename in the file storage menu is used, no file selection box
appears, and no prompts are displayed.  This feature provides a quick
and easy way to store the functions in the storage list (or the
functions displayed if the storage list is empty).  If the datafile
already exists, it is overwritten without warning.  This feature can be
used with the automatic filename incrementing (see the Instrument
Program User's Guide for details).  This function is also available as a
mouse special key when you move the mouse pointer to the help area at
the bottom of the screen.


5/9/91

The following are the new features in the 2.2 release:

* Support for transient capture is much improved.  The page/1pass/circ
  modes now work with either the Digital Record/Playback or with memory.
  Choice of positioning units (Frames, Samples, or Seconds) allows
  transient capture data to be positioned more accurately.  TCAP and
  SEEFILE are included with IP.

* An interactive directory "dialog box" has been implemented to
  facilitate loading and saving of files.

* Real, imaginary and magnitude time domain zoomed data are available.

* An HPGL B&W device type has been added in the CONFIGURATION menu.
  This selection is useful for applications that try to emulate a color
  plotter by shading, which can produce unsatisfactory results (e.g.
  Microsoft Word).

* The Y-axis AUTO/NOAUTO menu has been extended to include:
  * User: displays the user-entered limits and never resets the limits
	unless the menu is changed to something other than User.
  * Auto: autoscales. Going from Auto to User keeps the autoscaled
	limits as if they were typed by the user.  Zooming the display or
	entering new limits changes the menu to User mode.
  * Track: the Y-limits change depending on various parameters.
	The goal here is to display a reasonable y-range.  Zooming the
	display or entering new limits changes the menu to User mode.

* The RMS value is printed out in CSPEC real, imaginary and magnitude.

* The F5/F6 "find next peak/valley" function keys are back!

* F7 used to mark the wrong horizontal position when in LOG Y-axis.

* If the user enters a number like 10mv in the output amplitude, it
  is ignored (the 'v' at the end of the number is illegal).
  In this case, the output is not set to 10V.

* Overlaying impulse functions from a data file now works.

* A delay has been added when waiting for data blocks to come back from
  the analyzer. This solves a problem with very short block sizes.

* On the 2641, zoom center frequency has been limited to 100kHz.

* The plot cursor is now positioned in agreement with the cursor readout.

* The plot cursor is now limited to the available data, both in normal
  mode and in all lines mode.

* RMS, Peak and Peak-to-Peak selections have been added.

* The volts/{Hz and Eng.Units/{Hz units have been added.

* The internal format in which floating point numbers are stored has
  been changed from an ASCII string to binary floating point
  representation.  This improves numerical accuracy in computations and
  allows for more precision when entering floating point values.  The
  floating point numbers are rounded when displayed. To see the number
  that is actually being stored and used, press the space bar to edit it.

* Chirp bandwidth and center frequency are now tied to the INPUT menu,
  in a manner similar to the random output function.

* Inter-channel delay has been implemented for 2641/42. The values for
  each channel and the switch to turn it on or off are in the setup page
  of the CONFIGURATION menu.  The display X-axis limits reflect the
  amount of delay for that channel in time display.

* In split mode, the X-axis limits for the leftmost plot are menus that
  can be changed.  The display limits for the rightmost plot are labels
  that cannot be changed, but they could be different if inter-channel
  delay is enabled.

* In split display mode, the overload indicator relates to the display
  directly above it.
