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Avidyne DC50 Datalink Coupler Installation Manual  

Page 7 

P/N 600-00082-000 Rev 04 

2.6.3  Electrical Load Worksheet 

Both the VHF comm transceiver and the coupler consume more power in 
transmit  mode  than  in  receive  mode.    For  the  airplane  installation, 
identify  the  VHF  comm  equipment  to  which  the  coupler  will  be 
connected.   

 

1)  

Review  the  specifications  for  the  VHF  comm  transceiver  to 
determine  the  power  consumption  in  both  transmit  mode 
(intermittent  operation)  and  receive  mode  (continuous 
operation).   

2)  

Add the power consumption for the coupler in each mode.   

3)  

Review  the  circuit  breaker  and  electrical  wiring  ratings  for  the 
combined  electrical  load  to  ensure  that  the  installation 
complies  with  the  guidance  of  Advisory  Circular  43.13-1B, 
Chapter 11. 

Operating 

Mode 

700-00015-000 

Transmit Mode 

(Intermittent) 

700-00015-000 

Receive Mode 

(Continuous) 

VHF comm  

 

 

Coupler 

0.110 amps at 28V DC 

0.055 amps at 28 VDC 

Total  

 

 

 

Operating 

Mode 

700-00015-001 

Transmit Mode 

(Intermittent) 

700-00015-001 

Receive Mode 

(Continuous) 

VHF comm  

 

 

Coupler 

0.110 amps at 14 VDC 

0.055 amps at 14 VDC 

Total  

 

 

 

Summary of Contents for DC50

Page 1: ...DC50 Datalink Coupler Installation Manual P N 600 00082 000 Rev 04 Avidyne Corporation 55 Old Bedford Road Lincoln MA 01773 www avidyne com ...

Page 2: ...082 000 Rev 04 REVISION RECORD Documentation Part Number 600 00082 000 Date Revision No Description 11 8 02 00 Release Per ECO 02 305 11 18 02 01 Change Per ECO 02 322 12 16 02 02 Change Per ECO 02 361 3 14 03 03 Change Per ECO 03 084 05 15 04 04 Change Per ECO 04 081 ...

Page 3: ... 5 Electrical Interfaces 5 2 6 Electrical Load Worksheet 6 2 6 1 Coupler Electrical Load 6 2 6 2 Electrical Load Considerations 6 2 6 3 Electrical Load Worksheet 7 2 7 RF Interfaces 8 2 8 Positioning and Mounting the Coupler 8 2 9 Weight and Balance 8 3 Installation Procedure 9 3 1 Coupler Wiring and Installation 9 4 Post Installation System Checkout 11 4 1 EMI Check 11 5 Factory Service Policies ...

Page 4: ...Avidyne DC50 Datalink Coupler Installation Manual Page iii P N 600 00082 000 Rev 04 List Of Illustrations Figure 1 Installation Wiring 13 Figure 2 Top View and Side View 18 ...

Page 5: ...ndards It is the responsibility of those installing this article either on or within a specific type or class of aircraft to determine that the aircraft installation conditions are within the TSO standards TSO articles must have separate approval for installation in aircraft The article may be installed only if performed under 14 CFR Part 43 or the applicable airworthiness requirements 1 2 Equipme...

Page 6: ...ight 1 1 0 1 inches Width 5 6 0 1 inches Depth 5 1 0 1 inches Electrical Requirements Voltage 14 VDC Nominal 700 00015 001 28 VDC Nominal 700 00015 000 Current 110 A intermittent at 14 VDC 0 055A continuous at 14 VDC 110 A intermittent at 28 VDC 0 055A continuous at 28 VDC Cooling Requirements No cooling is necessary Operating Limits See Appendix B Environmental Qualification Forms TSO s TSO C37d ...

Page 7: ...components and parts Part Number Description 700 00015 000 Datalink Coupler 600 00082 000 Datalink Coupler Installation Manual 850 00017 000 Installation Kit Datalink Coupler OR Part Number Description 700 00015 001 Datalink Coupler 600 00082 000 Datalink Coupler Installation Manual 850 00017 000 Installation Kit Datalink Coupler Make sure that all the parts listed above were received and sustaine...

Page 8: ...ctor The datalink function cannot operate when the VHF communications radio is transmitting Therefore if there are two comms installed the coupler should be connected to the secondary comm This configuration will allow for best datalink operation Two different couplers are available 000 for 28 VDC Aircraft 001 for 14 VDC Aircraft Consult your pilots operating handbook to determine the aircraft sys...

Page 9: ... guidance with antenna coupler dimensions Installations not identified in applicable STC s may require additional substantiation The antenna coupler is held in place by four screws Refer to Appendix C A positive ground path must be established between the datalink coupler chassis and airframe ground less than 0 5 ohms 2 5 Electrical Interfaces Power to the datalink coupler is derived directly from...

Page 10: ...C 700 00015 001 Operating Mode Electrical Load Duty Cycle Transmit 0 110 amps at 14 VDC Intermittent Receive 0 055 amps at 14 VDC Continuous 2 6 2 Electrical Load Considerations The Avidyne coupler will be connected to the airplane electrical power system on the same circuit breaker as the associated VHF comm transceiver and should be wired to carry the full load of the circuit breaker The coupler...

Page 11: ...de intermittent operation and receive mode continuous operation 2 Add the power consumption for the coupler in each mode 3 Review the circuit breaker and electrical wiring ratings for the combined electrical load to ensure that the installation complies with the guidance of Advisory Circular 43 13 1B Chapter 11 Operating Mode 700 00015 000 Transmit Mode Intermittent 700 00015 000 Receive Mode Cont...

Page 12: ... transceiver The cable used to connect the VHF comm and the datalink transceiver should be as short as practical to minimize the loss found in long cable lengths and must be constructed of RG 400 or equivalent cable 2 9 Weight and Balance Weight and balance computation is required after the installation of the DC50 Datalink Coupler Follow the guidelines as established in AC43 13 1B Chapter 10 Sect...

Page 13: ...E4044 Right Angle BNC Dual Crimp Connector RG400 J5 Pasternack PE4044 Right Angle BNC Dual Crimp Connector RG400 All installation and modifications accomplished should be compliant with AC 43 13 1B and 2A 1 Ensure power is removed from all applicable avionics Turn off avionics master and aircraft master switches 2 Remove the VHF radio that will be connected to the coupler and disconnect the antenn...

Page 14: ...onnector to the coupler 7 Connect the comm antenna coax to the BNC connection on the coupler labeled J5 VHF comm in Appendix A 8 Connect the datalink transceivers antenna coax to the BNC connector on the coupler labeled J3 Datalink See Appendix A If the datalink transceiver will be installed later connect the 50 ohm termination to the datalink BNC J3 on the coupler 9 Connect the Antenna port of th...

Page 15: ...the avionics master 3 If applicable turn power on to audio control panel and make sure the comm is selected 4 Check the coupler pins P1 1 for 28V and P1 8 for Airframe ground with volt meter or for 700 00015 000 or 14 VDC at pin P1 1 for 700 00015 001 5 Check for correct operation of PTT of the comm connected to the coupler with an ohm meter at the coupler connector P1 5 6 Power on comm 7 Verify o...

Page 16: ...nday through Friday Please include the part number revision number and serial number of the unit in all correspondences For problem reporting please provide as many details associated with the problem as possible 5 2 General Service Procedures Repair of the DC50 Datalink Coupler is performed at the factory and includes a complete checkout Prior to returning a unit for service contact Avidyne at 1 ...

Page 17: ...Aircraft Ground VHF Datalink Antenna Datalink Transceiver Antenna 1 5 8 Push To Talk Aircraft Power P1 J1 J3 J5 Comm circuit breaker RG 400 Note 2 RG 400 Note 2 RG 400 Note 2 Note 1 Note 1 Note 1 Note 1 Wiring interconnects should match comm wiring power and ground AWG should carry the full load supplied by the circuit breaker 5 amp 20 AWG 10 amp 18 AWG Note 2 Coaxial Cable Use M17 128 RG400 Therm...

Page 18: ...egory Temperature and Altitude Low Temp 4 5 1 Equipment tested to Category A1 High Temp 4 5 2 4 5 3 Equipment tested to Category A1 In Flight Loss of Cooling 4 5 4 Equipment tested to Category Y Altitude 4 6 1 Equipment tested to Category D1 Decompression 4 6 2 Equipment tested to Category A1 Overpressure 4 6 3 Equipment tested to Category A1 Temperature Variation 5 Equipment tested to Category C ...

Page 19: ... Salt Spray 14 Category X no test performed Magnetic Effects 15 Equipment tested to Class Z Power Input 16 Equipment tested to Category B Voltage Spike 17 Equipment tested to Category A Audio Frequency Conducted Susceptibility 18 Equipment tested to Category B Induced Signal Susceptibility 19 Equipment tested to Category A Radio Frequency Susceptibility 20 Equipment tested to Category TTX Emission...

Page 20: ... Coupler Installation Manual Page 16 P N 600 00082 000 Rev 04 Environmental Tests RTCA DO 160D Section Conducted Test Category Icing 24 Category X no test performed Electrostatic Discharge 25 Equipment tested to Category A ...

Page 21: ...Avidyne DC50 Datalink Coupler Installation Manual Page 17 P N 600 00082 000 Rev 04 8 DC50 STC ...

Page 22: ...Avidyne DC50 Datalink Coupler Installation Manual Page 18 P N 600 00082 000 Rev 04 9 Coupler Dimensions Figure 2 Top View and Side View ...

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