SN3500 Software Version History

Note: SN3500 units without LED backlighting can only be updated to software version 4.03.

A4.08 – Released 10/5/2018

• ​Added installation configuration item to select ARINC 429 AHRS Status Label 270 definition
• Improved low brightness peformance in NVIS mode for SN3500-xxxx units

A4.07 – Released 7/7/2014

• Added support of heading information from the Mid-Continent 4305 directional gyro.

A4.06 – Released 1/24/2014

• ​For units with MOD A hardware only. (Serial numbers 5-4500 and higher.)
• Increased tolerance for fluxgate input to prevent premature flagging at high latitudes.
• Added selection for Garmin GTN6XX/7XX to GPS-1 and GPS-2 maintenance pages. (Operation is identical to Garmin GNS430 selection).

4.05 – Released 3/2/2012

• Adds optional LNAV Roll Steering capability. (Feature is standard on new shipments. Older units require purchase of key code to activate following software update to 4.05.)

4.04 – Released 12/5/2011

• ​Changed error handling of heading when using ARINC 407 (XYZ) due to loss of inverter.
• Improved electrical resolution of ARINC 407 bootstrap compass output.

4.03 – Released 11/20/2010

• ​Improved TACAN receiver self-test display.
• Improved external brightness trim setting.
• Increased resolution of heading and course datum output signals.

4.02 – Released 6/4/2010

• ​Improved TACAN display for self-test and negative range rates.
• Power-on restore of brightness setting for NVIS operations.
• TACAN relay output discrete for external annunciation.
• New reversionary attitude control input for installations with analog DME.
• New external brightness control input.
• Heading bug selectable to orange or white.

4.01 – Released 8/27/2009

• ​ARINC 429 test mode indication.
• Extended AC inverter range (240 – 560Hz).
• Additional data recording items.

4.00 – Released 5/27/2009

• ​Reversionary Attitude Mode available as option when using Sandel SG102 ARHS or other ARINC 429 AHRS as primary heading source.
• Data recording of SG102 data for AHRS diagnostics.
• Slight change in font including the ‘nm’ character to replace the ‘m’ character in all distance displays.
• Supports multi-channel DMEs.

3.06 – Released 12/11/2008

• Corrects automatic navigation source selection syncing with Garmin receivers.

3.05 – Released 9/15/2008

• Added annunciators for GPS WAAS selected approaches (ARINC Label 261 only).
• GPS Integrity Annunciator position moved to the upper right portion of the display co-located with the GPS WAAS selected approach
• annunciation.
• Added support for NVIS operation.

3.04 – Released 8/4/2008

• Added support for TACAN.

3.03 – Released 4/21/2008

• Updated WSI satellite weather interface.

3.02 – Released 11/19/2007

• Added GPS Integrity annunciation (ARINC Label 261 only).
• Associated ILS Energize output with active GPS approach.
• Added extended resolution for lateral guidance (ARINC Labels 116 and 325 only).
• Added support for WSI AV300/350 satellite weather receivers.
• Added high-speed ARINC 429 GPS selection.
• Supports connecting USB cable while SN3500 is powered.

3.01 – Released 9/29/2006

• Changed heading operation during first two minutes after startup to revert to fast slave mode in installations where a KG 102 gyro input is flagged as invalid.
• Corrected issue with incorrect heading display during extended high-rate turns (more than 10 minutes) in installations with a KG 102 gyro input.
• Added smoothing to compass card display when using XYZ heading input.
• Corrected display of flight plan course line when GPS is set to OBS mode to address scenario where course line could flash.
• Corrected situation in installations with WSI but no WX-500 input where pressing and holding the WX button would cause a system restart.
• Disabled heading bug sync function of heading knob during map menu operations.
• Map scratchpad memory retained during power cycle.
• Added null calibration capability to lateral and vertical deviation outputs on Maintenance Page 10.
• Added separate calibration settings for heading and course FCS deviation outputs on Maintenance Page 9.
• Corrected display of equipment active status indicators on Maintenance Page 13.
• Corrected operation of GPS Vertical Deviation selection menu when an ARINC 429 GPS is selected on Maintenance Pages 7 & 8.
• Corrected display of valid/invalid status of analog DME valid input on Maintenance Page 5.
• Changed bootstrap output selection to be independent of FCS selection. Bootstrap selection is now on Maintenance Page 10.
• Added support for analog NAV receivers which do not output composite signal.
• Changed analog to/from input when using analog localizer input to match installation manual.
• Corrected display of vertical flag and super flag output voltages on Maintenance Page 10.

3.00 – Released 12/5/2005

• Coupled back course localizer approach sensitivity fixed.
• WSI Datalink receiver precipitation and lightning support added.
• Map database version displayed.
• Multiple course pointer values removed to support GNS 430/530 auto coupled enroute to approach transitions.
• Removed unnecessary annunciations for decluttering.
• Improved TFC auto-range behavior.
• Added support of NAV2 on GPS2 relays.
• FCS maintenance page text revised to match pre-existing SN3308 installations.
• Changed default quadrant for KMT 112 installations.

2.01 – Released 9/20/2005

• Traffic display capability feature added.
• King serial DME support added.
• Analog DME support added.
• KLN 94 OBS mode support added.
• Menu button operation improvement.
• Color display & color pallet improvement.
• VDI flagging improvement.
• Map range expanded to 1,000 miles.

1.02 – Released 6/29/2005

• Commercial release.

1.00 – Released 5/12/2005

• Initial release.