New Features:  None.

Corrections:
• Fixes a rare date rollover problem with October 31.

Notes:  None.

New Features:  None.

Corrections:
• Enhanced floppy disk access for all modes of operation.

Notes:
• When formatting a floppy disk, complete details are now reported.

New Features:  None.

Corrections:
• Enhanced date rollover from year to year.
• Improved grid spacing when settings are saved to disk.

Notes:  None.

New Features: None.

Corrections:
• Enhanced disk formatting and writing capabilities to deal with bad sectors.

Notes: None.

New Features: None.

Corrections:
• Improved trigger levels when Y-scaling is used.
• odified routine to read data playback window start/end settings from nonvolatile memory.

Notes: None.

New Features:
• Added clock trigger source.
• Added another path to RECORD STATUS through the setup playback menu. 
• Added default 3-channel chart layout.
• Added full scale reporting in the zero/gain menus.
• Added PRINT FILE in the disk I/O menu
• Added PURGE command in record status menu that deletes specific records from memory.
• Added continuous capture with playback mode to data capture choices. 

Corrections:
• Improved datalogger mode reporting of overrange and zero suppression values.
• Start/end values for data playback cannot be set to the same values.

Notes:
• There were no versions 11.8 or 11.9

New Features:
• Data capture playback window values saved to nonvolatile memory.
• Data logger values now displayed on VF display.

Corrections: None.

Notes: None.

New Features:
• Added host control commands for record review and data upload. 

Corrections:
• Improves host control CHRT command.
• The date can now be set to Feb 29 in a leap year. 

Notes: None.

New Features:
• Added support for PI-FVH, PI-FVL, and PI-PR modules. 
• Added more lowpass filter selections for the d/dt function.
• Spectrograph bandwidth was widened to include 100 Hz. 

Corrections: None.

Notes:
• This version is necessary for new modules.

New Features:
• Added FFT analysis function.
• Added continuous capture mode for data capture.
• Added user scaling for PI-CS module.
• Sensitivity limit is now disabled for the PI-HV and PI-Tx modules.
• Added zero degree display for grounded thermocouple channels.

Corrections:
• The MODE label in the zero/gain menus now works correctly
• Improved thermocouple reporting in datalogger mode.
• The speed range key is now disabled in dual speed mode.

Notes: None.

New Features:
• Spectrograph now works with recorders without data capture.

Corrections: None.

Notes: None.

New Features:
• Added spectrograph mode.
• Added trace thickness control.  

Corrections:
• Improved the setup save routine.
• Auto ID stays enabled when leaving a realtime mode.
• Improved zero suppression with the PI-CS module.
• Enhanced RS232 data transfer printing for all chart speeds.
• Modify range of the on-demand buffer printing via host control.

Notes:
• There is a new Spectrograph operation manual available.

New Features:
• First general release version available. 

Corrections: None.

Notes: None.