SANDIA aerospace MARC-70 User manual

MARC-70 Interface Modules

Simplifying Complex Installations

SANDIA aerospace

PMA Certied

Multiple Modules to Choose From

Certied to 50,000 Feet or Above

Three Enclosures to Fit Every Requirement

Photo Courtesy NASA Hubble

Installation Solutions Modules

MARC 70 Switching and Interface Modules provide system engineers and installers with simple to install,

PMA certied solutions to previously complex installations. MARC 70 modules can be mounted individu-

ally in the SRU 1 or grouped in the SRU 5 and SRU 10 multi-module enclosures. No matter which mounting

method you choose, servicing the module is as easy as pulling one out and inserting another. And as with all

SANDIA aerospace products they are back by a three year no hassle warranty.

Special Interface Modules

SA 3/SA 3L/SA 3NVG

Regulator/Dimming Module

Provide .5 amps of annunciator drive

(1 amp short term for test purposes).

The SA-3 and SA-3Lprovide two lev-

els of brightness for day and night set-

tings. The SA-3 is used with incandes-

cent lamps, the SA-3L is for use with

LED lamps. The SA-3NVG provides

a third level of display brightness for

NVG applications. FAA-PMA

SA 15

Inverter Module

The SA 15 signal inputs in order to

provide common annunciator switch-

ing. The SA 15 has 14 inverter out-

puts. PMA Pending

SA 24

Diode Isolation Module

Provides 23 lines of diode ground-in-

ground-out isolation. Internal FET al-

lows simultaneous test of all lines to

ground. Requires 28Vdc in for test.

FAA-PMA

Choice of Enclosures

SRU 1

Single Card Enclosure SRU 5

Five Card Enclosure SRU 10

Ten Card Enclosure

Mil Qualied Switching Modules

SR 623

The SR263 has two, six pole nitrogen

lled relays. The two relays can be

activated simultaneously or individu-

ally. FAA-PMA

SR 343

The SR 343 has three, four pole nitrogen

lled relays. The three relays can be

activated simultaneously or individu-

ally. FAA-PMA

SR 623

The SR 623 has six, two pole ni-

trogen lled relays. The six relays

are activated individually. FAA-

PMA

GA Switching Modules

SR 34

The SR 34 uses three, four pole sealed

relays to provide 12 lines of switch-

ing. Coil current 60mA. PMA Pend-

ing

SR 54

The SR 54 is a twenty pole relay unit

ideally suited for switching the HSI

between GPS and VOR/LOC func-

tions. Coil Current 120mA. PMA

SR 64

The SR 64 is a multi-purpose relay

module that provides 24 lines of

switching. Coil current 120mA.

FAA-PMA Pending

3700 Osuna Rd. NE

Albuquerque, NM 87109

www.sandia.aero

SANDIA aerospace

R3-0912-1000

MARC70

Installation Manual

SA 3/L/NVG

SA 15

SA 24

305147-00

3700 Osuna Rd. NE, Suite 711

Albuquerque, NM 87109

505.341.2930

www.sandia.aero

SR 34

SR 54

SR 64

SR 263

SR 342

SR 623

SRU 1

SRU 5

SRU 10

Record of Revisions

Revision Date Description Approval

-1 June 25, 2000 Initial Release J. Fiala 000814

-2 March 29, 2001 ECN 3271 J. Fiala 010329

-3 July 16, 2004 ECN 3428 J. Fiala 040716

-4 Sept 26, 2006 ECN 1319 J. Fiala 20060926

-5 June 10, 2010 ECN 3739 L. Harrison 20100610

-6 January 24, 2012 ECN 3866 L. Harrison 20120125

This document and the information contained herein is the proprietary data of SANDIA aerospace,

Inc. No part of this document may be transmitted, reproduced, or copied in any form or by any

means without the prior written consent of SANDIA aerospace, Inc. Due to SANDIA aerospace’s

continued product and quality improvement programs, information contained in this document is

subject to change without prior notice.

Page 1

305147-00

Table Of Contents

Record of Revisions .............................................................1

Table of Contents ...............................................................2

List of Illustrations ..............................................................3

Section 1 - General Description ....................................................4

1.1 Introduction .............................................................4

1.1.1 Interface Modules..................................................4

1.1.2 Card Enclosures ...................................................4

1.1.3 SRU 1 ...........................................................4

1.1.4 SRU 5 ...........................................................5

1.1.5 SRU 10 ..........................................................5

1.2 Technical Characteristics ...................................................5

1.2.1 Physical Characteristics..............................................5

1.2.2 Operational Characteristics ...........................................6

 1.2.3 Certication .......................................................6

 EnvironmentalQualicationForm(SA3,SA15,SA24,SR263,SR343,SR623) .......7

 EnvironmentalQualicationForm(SR34,SR54,SR64) ..........................8

 EnvrionmentalQualicationForm,SA3NVG ..................................9

Section - 2 Installation .........................................................10

2.1 Introduction ............................................................10

2.2 Mounting Considerations..................................................10

2.3 Cooling................................................................10

Section - 3 Installation Procedures ................................................10

3.1 General................................................................10

3.2 Mounting Instructions ....................................................10

3.2.1 SRU 1 Outline Dimensions ..........................................11

3.2.2 SRU 5 Mounting Instructions ........................................12

3.2.2.1 SRU 5 Outline Dimensions ......................................12

3.2.3 SRU 10 Mounting Instructions .......................................12

3.2.3.1 SRU 10 Outline Dimensions .....................................12

3.3 Interconnect Wiring ......................................................14

3.3.1 SA 3/SA3L, Regulator / Dimming Module .............................14

 3.3.2 SA3NVGRegulator/DimmingModule ...............................14

3.3.3 SA 15, Inverter Module ............................................14

3.3.4 SA 24, Diode Isolation / Test Module..................................15

3.3.5 SR 34, 12 Pole Switching Module ....................................15

3.3.6 SR 54, 20 Pole Switching Module ....................................15

3.3.7 SR 64, 24 Pole Switching Module ....................................15

3.3.8 SR 263, 12 Pole Switching Module ...................................16

3.3.9 SR 343, 12 Pole Switching Module ...................................16

3.3.10 SR 623, 12 Pole Switching Module ...................................16

SA 3 / SA 3L Schematic and Pinout.....................................17

  SA3NVGSchematicandPinout .......................................18

SA 15 Schematic and Pinout ..........................................18

SA 24 Schematic and Pinout ..........................................19

SR 34 & SR 64 Schematic and Pinout...........................................20

SR 54 Schematic and Pinout ..........................................21

SR 263 Schematic and Pinout .........................................22

SR 343 Schematic and Pinout .........................................23

SR 623 Schematic and Pinout .........................................24

Page 2

List of Illustrations

Figure 3-1 SRU 1 Outline Dimensions ...................................11

Figure 3-2 SRU 5 / SRU 5-01 Outline Dimensions ..........................12

Figure 3-3 SRU 10 Outline Dimension ...................................13

Figure 3-4 SA 3 / SA 2L Schematic and Pinout .............................17

Figure3-5 SA3NVGSchematicandPinout ...............................18

Figure 3-6 SA 15 Schematic and Pinout...................................19

Figure 3-7 SA 24 Schematic and Pinout...................................20

Figure 3-8 SR 34 and SR 64 Schematic and Pinout .........................21

Figure 3-9 SR 54 Schematic and Pinout...................................22

Figure 3-10 SR 263 Schematic and Pinout..................................23

Figure 3-11 SR 343 Schematic and Pinout..................................24

Figure 3-12 SR 623 Schematic and Pinout..................................25

Figure 3-13 SA 3 / SA 3LAdjustment Locations.............................26

Figure3-14 SA3NVGAdjustmentLocations ...............................26

Page 3

305147-00

3.4 Calibration Procedures....................................................25

3.4.1 SA 3 / SA 3L.....................................................26

 3.4.2 SA3NVG .......................................................26

3.5 Continued Airworthiness ..................................................27

Table Of Contents con’t

Section 1 General Description

1.1 Introduction

This manual describes the installation of the SANDIA aerospace MARC70 line of interface mod-

ules.ItisintendedforusebyFAAcertiedrepairstationstoinstalltheMARC70modules.It

includes both the mechanical and electrical installation information for all MARC70 components,

including the individual modules and enclosures. Where applicable, alignment and checkout proce-

dures are included. In many instances, such as with switching relays, the checkout procedure will be

performedaspartofthemajorsysteminstallationcheckoutandnospeciccheckoutprocedureis

provided for in this manual. In any case, the installer should insure that all functions are operating

according to their intended purpose in their particular installation.

1.1.1 Interface Modules

All interface modules have the same mechanical dimensions and are inserted into the card enclosures

inthesamemanner.Anidenticationtagaccompanieseachinterfacemodulewhichshouldbeat-

tached to the card enclosure directly above the interface module to identify it. Each interface module

connectors, except the SR 34, SR 54 and SR 64, is keyed to prevent the inadvertent installation of

the connector into the wrong module. Keying of the module has been accomplished at the factory by

the removal of one of the pins on the module’s connector. The installing agency MUST insert a key-

ing plug into the appropriate pin location on the harness connector to complete the keying process.

Each MARC70 interface module is FAA-PMA approved and has been tested to meet the require-

ments necessary to allow it to be mounted outside the aircraft’s pressure vessel. Each interface mod-

ule has passed the vibration requirements for helicopter installations. See section 1-2 for complete

technicalspecicationoneachoftheMARC70modules.

1.1.2 Card Enclosures

Several different card enclosures are available depending on the application and installation space

available.Ifanenclosureisnotlled,theunusedcardslotsarecoveredwithblankpanels.These

extra card slots can be used in future installations or system upgrades, eliminating the need to re-

engineer the mechanical installation. Interface modules are secured to the enclosures with captive

stainlesssteelscrews.Ininstallationswheretheenclosureisdifculttoreach,theharnessconnector

canbeattachedrstthenthemoduleinsertedintotheappropriatecardslotandsecuredwiththecap-

tive hold down screws.

1.1.3 SRU-1

The SRU 1 is a single card enclosure which accepts any MARC70 interface module. The SRU 1 is

ideally suited for installations where only one MARC70 card is required or where there is limited

real estate for mounting the larger enclosures. The SRU 1 can be mounted in any axis and either

inside or outside the pressure vessel.

1.1.4 SRU 5

Page 4

TheSRU5isamulti-cardenclosurethatacceptsuptoveMARC70interfacemodules.TheSRU

5canbemountedeitherinsideoroutsidethepressurevessel.Whenlessthanveinterfacemodules

are used with the SRU 5, cover plates are placed over the unused card slots. If additional cards are

required at a later date, the cover plates can be removed and the appropriate interface card installed.

When installing the SRU 5 ample room should be allowed for both connector clearance and for

inserting and removing the interface modules. The SRU 5 as well as the interface modules can be

mounted in any axis.

1.1.5 SRU 10

The SRU 10 is multi-card enclosure that accepts up to ten MARC70 interface modules. It is ideally

suitedforinstallationsthatwillrequiremorethanveinterfacemodules.AswiththeSRU5,un-

used slots are covered with cover plates included in the installation kit. These extra slots can be used

on future installations, eliminating the need for additional mechanical engineering and approval.

The SRU 10 can be installed either inside or outside the aircraft’s pressure vessel. For installation

exibility,theSRU10andtheinstalledinterfacemodulescanbemountedinanyaxis.Ampleroom

should be allowed for both the connector and for inserting and removing the interface modules.

1.2 TECHNICAL CHARACTERISTICS

The conditions and tests performed for FAA-PMA approval of these articles are minimum perfor-

mance standards. It is the responsibility of the installing agency to determine that the aircraft operat-

ing conditions are within these FAA-PMA parameters.

1.2.1 Physical Characteristics

* With Module Installed

Page 5305147-00

Unit Part Number Width Height Depth Weight

SA 3 305005-01 3.92 in. 3.5 in. .82 in. .20 lb

SA 3L 305005-02 3.92 in. 3.5 in. .82 in. .20 lb

SA3NVG 306070-00 3.92 in. 3.5 in. .82 in. .29 lb

SA 15 305004-01 3.92 in. 3.5 in. .82 in. .15 lb

SA 24 305003-01 3.92 in. 3.5 in. .82 in. .18 lb

SR 34 305501-00 3.92 in. 3.5 in. .82 in. .19 lb

SR 54 305498-00 3.92 in. 3.5 in. .82 in. .26 lb

SR 64 305499-00 3.92 in. 3.5 in. .82 in. .25 lb

SR 263 305001-01 3.92 in. 3.5 in. .82 in. .16 lb

SR343 305000-01 3.92 in. 3.5 in. .82 in. .18 lb

SR 623 305002-01 3.92 in. 3.5 in. .82 in. .24 lb

SRU 1 305146-00 5.2 in. 1.0 in. 3.9 in.* .37 lb

SRU 1-01 305146-01 5.2 in. 1.0 in 3.9 in. * .37 lb

SRU 5 305018-00 5.4 in. 4.0 in. 3.65 in. * .80 lb

SRU 10 305014-00 9.55 in. 4.0 in. 3.65 in. * 1.32 lb

1.2.2 Operational Characteristics

1.2.3 Certication

Page 6

* SA3 PMA’d with SRU1 as SAS 1-3

** SA24 PMA’d with SRU 1 as SAS 1-24

Unit Part Number Operating Temp Altitude Voltage Current Req.

SA 3 305005-01 -55oto +70o C 70,000 Ft. 28Vdc

SA 3L 305005-02 -55oto +70o C 70,000 Ft. 28Vdc

SA3NVG 306070-00 -55oto +70o C 35,000 Ft. 28Vdc

SA 15 305004-01 -55oto +70o C 70,000 Ft. N/A N/A

SA 24 305003-01 -55oto +70o C 70,000 Ft. N/A .003Amp

SR 34 305501-00 -20oto +55oC 50,000 Ft. 28Vdc 60mA

SR 54 305498-00 -20oto +55oC 50,000 Ft. 28Vdc 120mA

SR 64 305499-00 -20oto +55oC 50,000 Ft. 28Vdc 120mA

SR 263 305001-01 -55oto +70o C 70,000 Ft. 28Vdc 150mA

SR 343 305000-01 -55oto +70o C 70,000 Ft. 28Vdc 220mA

SR 623 305002-01 -55oto +70o C 70,000 Ft. 28Vdc 250mA

SRU 1 305146-00 -55oto +70o C 70,000 Ft. N/A N/A

SRU 5 305018-00 -55oto +70o C 70,000 Ft. N/A N/A

SRU 5-01 305018-01 -55oto +70o C 70,000 Ft. N/A N/A

SRU 10 305014-00 -55oto +70o C 70,000 Ft. N/A N/A

Unit Part Number PMA STC Aircraft

SA 3 305005-01 Yes

Yes* ST09475SC

ST3007WI-T Embraer EMB120

Cessna Citation 650

SA 3L 305005-02 No

SA3NVG 306070-00 Pending Pending Eurocopter BK-117-C2

SA 15 305004-01 Pending

SA 24 305003-01 Yes** ST09475SC Embraer EMB120

SR 34 305501-00 Pending

SR 54 305498-00 Pending

SR 64 305499-00 Pending

SR 263 305001-01 Yes ST00318DE-D Learjet 55

SR 343 305000-01 Yes ST00318DE-D Learjet 55

SR 623 305002-01 Yes ST3007WI-T Cessna Citation 650

SRU 1 305146-00 Yes*/** ST09475SC Embraer EMB 120

SRU 5 305018-00 Yes ST3007WI-T Cessna Citation 650

SRU 5-01 305018-01 Eurocopter BK-117-C2

SRU 10 305014-00

SA 3, SA 15, SA 24, SR263, SR 343, SR 623

EnvironmentalQualicationForm

Page 7305147-00

NOMENCLATURE: MARC70 RELAY, DIODE ISOLATOR,INVERTER AND REGULATOR UNIT

TYPE/MODEL/PART NO: MARC70/SA3, SA15, SA54, SR263, SR343, SR623

TSO NUMBER: DO160Env. Cat.E1-BBA[(SBL09U)]XXXXXXZZAZZULXXX

MANUFACTURER’S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATIONS:

MARC70 INSTALLATION MANUAL 305147-00

ENVIRONMENTAL TEST PLAN SR343, SR263, SR623, SA24, SA15, SA3 Doc # MK700020

MANUFACTURER: SANDIA AEROSPACE

ADDRESS: 3700 OSUNA RD NE, STE 711, ALBUQUERQUE, NM 87109

REVISION & CHANGE NUMBER OF DO-160: REV D. DATED JULY 27, 1997

CONDITION SECTION DESCRIPTION OF TESTS CONDUCTED

Temperature and Altitude

Low Temperature

High Temperature

In-ightLossofCooling

Altitude

Decompression

Overpressure

4.0

4.5.1

4.5.2 & 4.5.3

4.54

4.6.1

4.6.2

4.6.3

Equipment tested to category E1

Tested to +70oC Operating High Temperature

Tested to +85oC Ground Survival

Test not Applicable

70,000 feet

Test not Applicable

TemperatureVariation 5.0 Tested to Category B

Humidity 6.0 Tested to Category B

Operational Shock and Crash Safety 7.0 Tested to Category A, Aircraft Type 5. Random Orientation

Vibration 8.0 Tested to Category S, Aircraft Zone 2 using vibration curves B and

Tested to Category U, Helicopter Zone 2 using vibration curves F and

F1.

Explosion 9.0 EquipmentidentiedasCategoryX,notestperformed

Waterproofness 10.0 TestedtoCategoryX,notestperformed

Fluids Susceptibility 11.0 EquipmentidentiedasCategoryX,notestperformed

Sand and Dust 12.0 EquipmentidentiedasCategoryX,notestperformed

Fungus 13.0 EquipmentidentiedasCategoryX,notestperformed

Salt Spray 14.0 EquipmentidentiedasCategoryX,notestperformed

Magnetic Effect 15.0 Equipment is Category Z

Power Input 16.0 Tested to Category Z

VoltageSpike 17.0 Tested to Category A

Audio Frequency Susceptibility 18.0 Tested to Category Z

Induced Signal Susceptibility 19.0 Tested to Category Z

Radio Frequency Susceptibility 20.0 Tested to Category U

Radio Frequency Emission 21.0 Tested to Category L

Lightning Induced Transient

Susceptibility 22.0 TestedtoCategoryX,notestperformed

Lightning Direct Effects 23.00 EquipmentidentiedasCategoryX,notestperformed

Icing 24.0 EquipmentidentiedasCategoryX,notestperformed

Electrostatic Discharge 25.0 EquipmentidentiedasCategoryX,notestperformed

Table of contents

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