Sandel SG102 AHRS User manual

82011-ICUG Rev G
SG102 AHRS
Installation/Calibration Utility
User Guide
Rev G, 09/30/2014

82011-ICUG Rev G SG102 AHRS Installation/Calibration Utility
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1 TABLE OF CONTENTS
1TABLE OF CONTENTS............................................................................................................... 2
2Revision History............................................................................................................................. 3
3Introduction.................................................................................................................................... 4
3.1Related Information ...................................................................................................................................... 4
4Installing the Software on your PC............................................................................................... 4
5Connecting the SG102 AHRS Maintenance Adapter ................................................................. 5
6Startup Screen................................................................................................................................ 6
6.1Enter Shop Name and Aircraft ID................................................................................................................. 6
6.2SG102 Communication................................................................................................................................. 6
6.2.1Establish Communication ......................................................................................................... 6
6.2.2Select ARINC 429 Speed (Hardware Mod 2 and Later):.......................................................... 8
6.2.3Check ARINC Maintenance Word Enable (1.25 and later):..................................................... 9
6.2.4‘Clear Pre-Cal’ button (1.26 and later)...................................................................................... 9
6.2.5“Pre-Cal”................................................................................................................................... 9
6.2.6“Calibrate” ................................................................................................................................ 9
6.2.7“Verify Only”............................................................................................................................ 9
7Pre-Cal Procedure (MT102 Unmounted)................................................................................... 10
7.1Make the MT102 Free Field Measurement................................................................................................. 10
7.2Mount the MT102 in the aircraft................................................................................................................. 11
8Calibration.................................................................................................................................... 12
8.1Notes on Aircraft Configuration.................................................................................................................. 12
8.2Taxi to the Compass Rose........................................................................................................................... 12
8.3Perform Calibration..................................................................................................................................... 12
8.3.1Re-establish PC Communications........................................................................................... 12
8.3.2Select SG102 Mount Direction............................................................................................... 13
8.3.3Coarse Calibration (1.26 or later)............................................................................................ 14
8.3.4Fine Calibration ...................................................................................................................... 17
8.3.5Lattitude and Magvar (1.10 and earlier only).......................................................................... 18
8.3.6Create Log File ....................................................................................................................... 18
8.4Verification – Calibration Complete........................................................................................................... 20
9For Further Assistance................................................................................................................ 21

82011-ICUG Rev G SG102 AHRS Installation/Calibration Utility
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2 Revision History
Revision Date Comments
G 09/30/2014
A/R 1572 Software was 2.70
Added “Unknown SG102 Version” error message
F 08/25/2014 A/R 1560 Software was 2.60
E 03/06/2014
A/R 1472 addition of ARINC speed selection for Mod
2 and later hardware, software version 2.60
D 03/15/2010 A/R 1112 Software was 2_30
C 11/10/2009 A/R 1098 Software was 2_20
B 9/21/2009 A/R 1092 Software was 2_00
A 7/22/2009 A/R 1071; Initial Release Version 2.0

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3 Introduction
The SG102 AHRS Installation/Calibration Utility version 2.80 and higher is a Windows
application program which runs on a laptop or PC. When used in conjunction with the
SG102 Maintenance Adapter it uses the computer’s USB port to perform the mount
position selection and compass alignment of the SG102/MT102 system after installation
in the aircraft.
The software works with all versions of SG102. Where a specific step is version-specific,
this will be noted in the instructions.
For SG102 software version 1.26 or later, this utility performs a 2-step coarse-fine
calibration. This enhancement allows improved performance when operating in more
difficult (i.e. highly magnetized) airframe environments.
For SG102 Mod 2 or later hardware with software version 1.50 or later, this utility
presents the option for ARINC 429 High Speed.
The final system calibration values are stored in a configuration module physically
located in the MT102. This calibration data is retrieved every time the SG102 system
powers up. In the event of an SG102 replacement the calibration data stays with the
aircraft and therefore realignment of the SG102 is not required.
Note: The SG102 Maintenance Adapter Windows Drivers must be installed on
the PC first. See the Maintenance Adapter User Guide.
3.1 Related Information
Description SPN
SG102 Maintenance Adapter 82132
SG102 Maintenance Adapter Users Guide 82132-UG
USB Cable 88114
SG102 Installation CD 82011-INCD
SG102 Installation/Calibration Utility 82011-ICU
MT102 Maintenance Extension Cable Drawing 88128-10
4 Installing the Software on your PC
1) On your PC, create a directory in “C:\” called SG102Install.
2) Copy SG102Install_v2_XX.exe into that directory.
3) Navigate to C:\SG102Install in Windows Explorer.
4) Create a folder called “Reports” in the C:\SG102Install folder. To do this, right-
click anywhere within the C:\SG102Install folder and select “New->Folder” from
the drop-down menu. Rename the “New Folder” to “Reports”.

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5) Right click on the SG102Install_v2_XX.exe icon and select “Create Shortcut”
from the dropdown menu.
6) Move the shortcut icon to the PC desktop.
5 Connecting the SG102 AHRS Maintenance Adapter
1) Follow the instructions in the SG102 Maintenance Adapter User Guide for
installation of the USB serial port drivers if this has not been done.
2) Ensure that the switch is in the IN (“NORMAL”) position before powering up the
SG102 for Installation/Calibration. The green LED in the switch will be OFF
when the USB connector is attached and the switch is in this position. The switch
must be in the correct position BEFORE the SG102 is powered up.
3) When the SG102 power is applied all 4 SG102 LED’s will illuminate
momentarily – then the Error LED will flash until the unit goes valid..
PROPER SG102 LED INDICATIONS
SWITCH : IN POSITION
LED OFF
LED’s ALL ON MOMENTARILY.
If only POWER LED is on, recheck the
mode pushbutton switch.

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6 Startup Screen
6.1 Enter Shop Name and Aircraft ID
Note: This information needs to be entered only on the 1st pass through the program.
1) Double click the SG102 AHRS Installation/Calibration Utility shortcut icon on
your desktop.
2) Enter the tail number of the aircraft and the shop name and installer name at the
prompts. Click the “Next >” button to continue.
6.2 SG102 Communication
6.2.1 Establish Communication
Note: This information needs to be entered only on the 1st pass through the program.
1) This screen allows selecting the PC COM port for communicating with the
SG102/MT102. If the SG102 AHRS Installation/Configuration Utility has been
run before, it will automatically select the last COM port used.
2) If communication automatically establishes, proceed to section 6.2.2.
3) If communications does not automatically establish, then manually select the
correct COM port for communicating with the SG102. If the correct port is
unknown there is no harm in trying the different options until you find the right
one.

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When the correct COM port is selected, the Connection Status changes to Connected.
If an error message “Unknown SG102 Version. Program will CANCEL...” appears,
press the OK button to close the program and contact Sandel for assistance.
After establishing the connection, software version information appears for the
SG102 and the MT102. Once connected, the following information appears:

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6.2.2 Select ARINC 429 Speed (Hardware Mod 2 and Later):
For Mod 2 hardware and later, the High speed 429 option is available and may be
selected.
Factory setting is Low speed.
Units prior to Mod 2 only support Low speed.

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6.2.3 Check ARINC Maintenance Word Enable (1.25 and later):
Note: For SG102 Software before 1.25 the ARINC checkbox does not appear.
Check this box if connected to a Sandel SN3500/SN4500 PND. This adds debugging
labels to the SN3500/4500 data recording systems.
Uncheck this box if not connected to a Sandel SN3500/SN4500 to suppress these
labels.
6.2.4 ‘Clear Pre-Cal’ button (1.26 and later)
This button is normally not used. It appears on the 2nd pass through the program after
the Pre-Cal procedure has been completed. Clicking this button will clear the previous
Free Field measurement file if it is desired to repeat the free field measurement for any
reason.
6.2.5 “Pre-Cal”
This button appears if the Pre-Cal has not yet been done. Proceeds to the Pre-Cal
procedures.
6.2.6 “Calibrate”
This button appears after Pre-Cal has been done. Proceeds to the Calibrate procedures.
6.2.7 “Verify Only”
This button is normally not used. It allows you to verify an existing calibration without
changing anything.