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3700 Osuna Road NE 
Suite 711 
Albuquerque, NM 87109 
www.sandia.aero 

 

 

Figure 5 - Wiring Diagram 

3.6

 

Unit Mounting 

1.

 

The unit connects to the mounting bracket utilizing two upper tabs and a lower fastener.  

2.

 

Place gasket on unit before installing unit onto bracket. 

3.

 

The unit is installed by engaging the two upper tabs first, then securing the bottom screw.   

4.

 

Hold the unit at a slight angle off of the instrument panel (as shown below) and align the upper 
tabs with the slots on the rear of the unit. 
 

Summary of Contents for SI-11X

Page 1: ...3700 Osuna Road NE Suite 711 Albuquerque NM 87109 www sandia aero 905020 IM Rev A SI 11X Installation Manual ...

Page 2: ...uced or copied in any form or by any means without the prior written consent of SANDIA aerospace Due to SANDIA aerospace s continued product and quality improvement programs information contained in this document is subject to change without prior notice Copyright 2019 SANDIA aerospace Corporation all right rights reserved Printed in USA Record of Revision Revision Date Description Approval A RR 1...

Page 3: ...Procedures 9 3 1 General 9 3 2 Equipment Required 9 3 2 1 Supplied 9 3 2 2 Operational Software 9 3 2 3 Required But Not Supplied 10 3 3 Mounting Hole 10 3 4 Mounting Bracket Installation 10 3 5 Wiring Installation 11 3 6 Unit Mounting 13 3 7 System Configuration 15 3 7 1 Entry Exit Configuration Mode 15 3 7 2 Configuration Page 16 Section 4 Operation 17 List of Illustrations Figure 1 Unit Outer D...

Page 4: ...3 3700 Osuna Road NE Suite 711 Albuquerque NM 87109 www sandia aero ...

Page 5: ...es from a typical navigation receiver or GPS navigator All information is displayed on a color 3 5 diagonal LCD display in traditional aerospace symbology 1 2 1 System Functions The SI 11X performs the following functions Display of Lateral Deviation Either VOR ILS or GPS Display of Vertical Deviation Either ILS or GPS Display of VOR OBS Degrees Display of VOR TO FROM indication Display of 4 Annun...

Page 6: ...5 3700 Osuna Road NE Suite 711 Albuquerque NM 87109 www sandia aero 1 2 3 Unit Outer Dimensions Figure 1 Unit Outer Dimensions ...

Page 7: ...ss 1 3 2 Electrical Characteristics Needle Range 150mV Full Scale Deflection Needle Accuracy 2 of Full Scale Deflection Needle Max Deflection 175mV Max Deflection Needle Common Mode Voltage 3Vdc Needle Differential Load 1 kOhm To From Threshold 40mV To Positive To From Threshold Accuracy 2mV To From Common Mode Voltage 3Vdc To From Differential Load 1 kOhm Flags Threshold 125mV Flags Common Mode V...

Page 8: ...Osuna Road NE Suite 711 Albuquerque NM 87109 www sandia aero 1 4 Environmental Characteristics Temperature 20 to 55 Degrees C Humidity DO 160G Standard Humidity TBD Power DO 160G Section 16 TBD EMI TBD RFI TBD ...

Page 9: ...typical navigation receiver or GPS navigators via the standard analog that typically drove mechanical needle movements and flags The resolver circuit in the SI 11X can also emulate electrically the mechanical resolver found in traditional mechanical CDI s 2 2 Cooling Considerations The SI 11X does not require any special cooling considerations ...

Page 10: ...ally unit checkout procedures Figure 2 Unit Front and Rear Views 3 2 Equipment Required 3 2 1 Supplied SI 11X Unit P N 905020 00 Kit Install Electrical SI 11X P N TBD Conn D 25 Pos Rcpt Sldr Cup P N TBD Clamp D Conn 45 180 Deg P N TBD Kit Install Mechanical SI 11X P N 306187 00 Bracket Mounting Front P N 306179 Gasket P N 306505 Bracket Mounting Rear P N 306185 Screw Phillips Flat Undercut SS X4 6...

Page 11: ...acket P N 306179 and rear mounting bracket P N 306185 must be utilized to mount the instrument The panel cutout should be as follows Figure 3 Instrument Cutout Front and rear mounting brackets adapt the unit connection points to the 3 round instrument hole cutout The rear bracket is utilized to fasten the unit to the panel The supplied screws and nuts must be used to retain the brackets 3 4 Mounti...

Page 12: ...ector uses screw lock assemblies to secure the connector to the unit The screw lock assemblies can be replaced with slide lock posts if desired by the installer NUM NAME I O DESCRIPTION P1 1 Rotor H Input Rotor Reference P1 2 Rotor C Input Rotor Reference P1 3 Stator D Output Cosine of Rotor Reference P1 4 Stator F Output Sine of Rotor Reference P1 5 Stator E Output Return for Stator D P1 6 Stator...

Page 13: ...P positive for up needle movement 150mV for full scale 5 dots P1 14 GS DOWN Input Glideslope UP DOWN differential DOWN positive for down needle movement 150mV for full scale 5dots P1 15 GS FLAG Input Glideslope Flag differential Positive for needle active at 125mV P1 16 GS FLAG Input Glideslope Flag differential return P1 17 GPS ANN Input Active Low for GPS annunciation P1 18 VLOC Ann Input Active...

Page 14: ...g bracket utilizing two upper tabs and a lower fastener 2 Place gasket on unit before installing unit onto bracket 3 The unit is installed by engaging the two upper tabs first then securing the bottom screw 4 Hold the unit at a slight angle off of the instrument panel as shown below and align the upper tabs with the slots on the rear of the unit ...

Page 15: ... unit is now parallel to the panel 7 Once parallel to the panel apply downward pressure to ensure the upper tabs remain fully engaged 8 While holding in ward and down ward pressure on the unit tighten the lower screw with the 3 32 hex drive Torque to 5 inch lbs Do not over tighten 9 Verify that the unit is firmly attached to the instrument panel The bezel of the unit will stand off slightly from t...

Page 16: ... for approximately 7 seconds the unit will enter the main operating mode 3 7 1 Entry Exit Configuration Mode Setup mode is enabled when the unit is powered on while the rotary knob is being held in the pressed state The unit will display a Caution Enter Config Mode NO YES To enter configuration mode rotate the encoder until YES is yellow and press the knob Figure 8 Setup Mode Entry Exiting the con...

Page 17: ...ent 10ths of mV 2000 2000 1 GS GAIN Vertical needle gain adjustment 8 1 2 001 GS OFFSET Vertical needle zero offset adjustment 10ths of mV 2000 2000 1 TO FROM GAIN TO FROM input gain 8 1 2 001 TO FROM OFFSET TO FROM zero offset 10ths of mV 2000 2000 1 LOC FLAG GAIN LOC Flag gain adjustment 8 1 2 001 LOC FLAG OFFSET LOC Flag zero offset 10ths of mV 2000 2000 1 GS FLAG GAIN GS Flag gain adjustment 2...

Page 18: ...NG is 150mV 1 5mV 5 Remove the localizer signal and observe the VLOC FLAG READING is 0 1 5mV 6 Switch to the Glideslope receiver Inject a strong glideslope signal Adjust DDM to zero and adjust GS OFFSET so that GS READING is 0 1 5mV 7 The GS FLAG READING should be greater than 125mV 8 Adjust DDM to 175 UP and adjust GS GAIN so that GS READING is 150mV 1 5mV 9 Adjust DDM to 175 DOWN and observe tha...

Page 19: ...18 3700 Osuna Road NE Suite 711 Albuquerque NM 87109 www sandia aero ...

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