ST3400 Software Information

ST3400 Software Version History

​Note: Software versions denoted with ‘A’ are applicable only to Mod A hardware (serial numbers 2000 through 6-7349).
Software versions denoted with ‘B’ are applicable only to Mod B hardware (serial numbers 6-7350 and higher).

• Added support for APN-194 radar altimeter.
  

A3.15 – Released 8/29/2016

• Corrects potential communications issue with RS-232 GPS data during power-on sequence.
  

• Support of ST3400 Mod B hardware.
  

A3.12 – Released 3/12/2008

• Factory testing.
  

• Added support for LED backlighting.
  

• Added option for alternate FLTA alert audio.
• Added selectable pilot/co-pilot position setting for bearing pointer colors.
• Removes possible erroneous TAWS FAIL indication on RMI and TCAS displays.
  

A3.09 – Released 3/10/2006

• Reduction of nuisance alerting for systems using analog air data computers operating in temperatures below standard by 20 degrees or more Celsius.
  

A3.08 – Released 2/24/2005

• Added support for separate analog LOC and VOR input.
• Added interface for ARINC 575.
• Added ARINC 565 coarse and fine synchro interface for PA and CBA selections.
• Added additional validity check for PDA.
• Extended database coverage to 73N latitude.
  

A3.07 – Released 11/10/2004

• Added support for CIC 020702 air data computer.
• Modified filtering for radar altimeter data to reduce nuisance alerts.
• Changed default calibration value for composite NAV interface.
  

A3.06 – Released 9/07/2004

• Corrected display of composite NAV bearing pointer information.
• Corrected operation of external TAWS inhibit switch.
• Modified operation of ARINC 429 magnetic heading data.
  

A3.05 – Released 8/03/2004

• Factory testing.
  

A3.04 – Released 7/28/2004

• Factory testing.
  

A3.03 – Released 7/15/2004

• Change to support Mod A hardware.
• Self-test will operate all external annunciator lamps.
• TCAS key code not overwritten by configuration module.
• Display auto-dim function enabled.
• Improved lamp monitoring function.
• Corrected display of flight plans from KLN-94.
  

3.07 – Released 10/14/2004

3.02 – Released 4/16/2004

• Ensure P3-8 “TCAS INH” function operates during maintenance page operations so it can also be used as “audio enable”.
  

3.01 – Released 3/16/2004

• Displayed TRK is flagged when it should not be flagged.
  

3.00 – Released 2/25/2004

• Implement a TAS/TCAS function.
• Implement a secondary VSI channel to support adjustment for TCAS-II VSI display.
• Added optional 400,300,200,100,50,40,30,20,10′ callouts from RA.
• Allow selection of function of P3-8 discrete to support TCAS and external GPWS FAIL.
• Added optional DH callout.
• Added optional input for GS OVRD external switch.
• Added optional input for FLAPS OVRD external switch.
• Added optional BC discrete input to inhibit GS alert.
• Added processing to support FreeFlight 1201 GPS/WAAS module.
• Improved power fail recovery when power fail spike falls outside of DO-160D parameters.
• Improved OAT processing (new configuration).
• Improved handling of ADF bearing on maintenance page.
• Flaps threshold not being stored in NVS.
• Improve available configurations of additional equipment.
• Increase amount of time unit will record data past 10 hours.
• Relocated annunciations to support inclusion of TCAS.
• Support a configuration with Pressure Alt but without CBA.
• Improved tests to split pressure and CBA altitudes to better show if correct source is being used.
• Added ramp down audio output at end of clip to reduce noise.
• Added reduced low-end of brightness adjustment.
  

2.04 – Released 1/13/2004

• Assure enough time to read the full parameter block during power-up.
  

2.03 – Released 9/11/2003

• Lamp cycle counter counts multiple times on system turn-on.
• Lamp hours resets on software upload.
• Lamp hours updated when displaying splash screen, fatal error or CM information.
• Altitude values in the Himalayan mountains are sometimes treated as negative values, or ocean-code.
  

2.02 – Released 8/10/2003

• Make provision for radar altimeter RT100.
• Incorporated support AHRS, 429, heading status input with roll angle.
• Improved startup operation.
• Incorporated on Ground Disable of Class B alerts.
• Incorporated selection for additional GPS receivers.
• Assured waypoint text always shown.
• Incorporated support additional support for airdata computers.
• Added ranges lower than 5nm.
• Improve fail equipment errors.
• Added new discrete out.
• Activate Config Module.
• Improve handling of and added some maintenance Mode items in software.
• Code style improvements.
  

​2.01 – Released 4/17/2003

• Supports Shadin Serial ADC input.
• Support for synchro flap input.
• Improved handling of partial inverter failure.
  

2.00 – Released 2/25/2003

• Supports GPS altitude from Garmin 400/500 series GPS receivers.
• Supports pressure altitude input from ARINC 429 ADC.
• Improved display of GPS flight plans.
• Corrected display of flight plan when direct-to on GPS is used to bypass waypoints.
• Supports KRA-405 and RT-100 radar altimeters.
• Added display of course line when GPS is in OBS mode.
• Improved GPWS Mode 5 logic.
• Supports analog OAT probe input.
• Supports high speed ARINC 429 GPS/FMS input.
• Support AZ-252 ADC.
• Improved display processing routines.
  

1.05 – Released 11/01/2002

• Support Collins ADC-80.
• Improve USB port performance.
• Support discrete input for radar altimeter failure.
  

1.04 – Released 6/28/2002

• Initial release.