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Audio International, Inc.

VSS-401-x Installation and Operation Manual

Document # 540335, Rev IR, 10/2006

Page 1 of 21

Document Revision History

Rev. Level

Date

Description

IR 10/2006

Initial

Release

Reference Documents

Document #

Description

525735 VSS-401-x

Outline

Drawing

Service Bulletin List

Service

Bulletin #

Subject

Manual

Revision

Date

Table of Illustrations

Section #

Description

Page #

PROPRIETARY NOTICE: Despite any other copyright notice, this document and information

disclosed herein contains confidential, proprietary designs owned by Audio International, Inc.

Neither this document nor the data contained herein shall be

reproduced, used, or disclosed to

anyone without the written authorization of Audio International, Inc.

Summary of Contents for VSS-401-x

Page 1: ...00 Industry Drive North Little Rock AR 72117 Phone 501 955 2929 Fax 501 955 2988 www audiointl com Installation and Operation Manual VSS 401 x Video Multiplexer Document 540336 a DeCrane Aircraft Company ...

Page 2: ... Revision Revision Date Table of Illustrations Section Description Page 2 2 1 Random Select Mode 5 2 2 2 Sequence Select Mode 6 4 8 Cover Plate Removed 16 7 0 Reference Drawings 20 21 PROPRIETARY NOTICE Despite any other copyright notice this document and information disclosed herein contains confidential proprietary designs owned by Audio International Inc Neither this document nor the data conta...

Page 3: ...stallation 8 3 2 Unpacking and Inspection 9 3 3 Cautions Warnings 9 3 4 Wiring Requirements 10 3 5 Electrical Characteristics 11 3 6 Mating Connector Information 11 3 7 Pinout Assignment Descriptions 12 3 8 Built In Test BIT Capabilities 13 3 9 Discrete Interfaces 13 3 10 Return to Last State Power Up Default 13 3 11 Video Interfaces 13 4 0 VSS 401 x Operation 14 5 0 Instructions for Continued Air...

Page 4: ... provides for the selection of one to four multi standard video source inputs to one output VSS 401 x also allows customer configuration via DIP switches to select termination on each input 1 3 Operational Features Lightweight compact size Solid state circuitry 28 VDC powered Optically isolated discrete inputs Status LEDs for channel select status sequence select input status briefer input status ...

Page 5: ...lows users to multiplex composite analog video signals one to four inputs to one output while DIP switches allow for customer configuration VSS 401 x shall allow customer configuration via DIP switches to select termination on each input Other DIP switches Allow the customer to select any one of the four inputs to be briefer input and Allow the customer to select the number of active inputs one tw...

Page 6: ...DIP switches 3 and 4 When a random select switch is activated and released the corresponding video source is selected Optionally a briefer activate toggle switch may be installed Upon activation the video source configured by DIP switches 1 and 2 is routed to the monitor Deactivation of the briefer activate switch causes the previous source to be routed to the monitor Optional status LEDs provide ...

Page 7: ...gured by DIP switches 3 and 4 Each time the sequence select switch is activated and released the next highest video source is selected Upon reaching the highest numbered source the next selection wraps around to the lowest Optionally a briefer activate switch causes the previous source to the routed to the monitor Optional status LEDs provide a visual indication of the currently selected source Th...

Page 8: ...ndard Commercial Off The Shelf video devices and or equipment including but not limited to Video Crosspoint Distribution Modules i e A V 9691 AV 3232 LCD display monitors Plasma display monitors Projectors Personal Display Devices i e Sony Glasstron and Touch Screen ECU Modules The video output is a series 75Ω back termination Unit has a fixed video signal gain of two and is intended to drive a 75...

Page 9: ...alled to conform to the standards designated by the customer installing agency and existing conditions as to the unit location and type of installation 3 1 3 Mounting provisions are provided via four 4 0 16 inch diameter half circle cutouts two 2 on each the left and right sides of unit on provided mounting flanges Refer to Section 6 0 Reference Drawings for mounting hole diameters and configurati...

Page 10: ... Repackage the unit in its original packaging materials and return it to AI following instructions given by the AI representative Refer to the front cover of this manual for address If no return is necessary retain the packing list and the packing materials for storage 3 3 Cautions and Warnings 3 3 1 It is important to do a pin to pin power and ground check on all connectors Ensure that power and ...

Page 11: ... run parallel to combustible fluid or oxygen lines maintain a separation of six 6 inches between the lines 3 4 2 Grounding and Bonding This unit provides for common circuit ground and chassis ground connections Both circuit and chassis grounds are referenced to pin two 2 of connector P1 Circuit chassis ground connection shall be bonded to an electrically conductive chassis mounting point or frame ...

Page 12: ...3 The VSS 401 x utilizes 6 connectors P1 is a 9 pin connector providing power ground sequence switch input status return to last state input and briefer active 3 5 4 BNC1 through BNC4 provide video input 3 5 5 BNC1 provides video output 3 6 Mating Connector Information All wiring harnesses to the unit shall be supplied and fabricated by the installing agency P1 CONNECTOR PART NUMBER MATING CONNECT...

Page 13: ...ctive 4 Status 1 output Random select 1 input GND Active 5 Status 2 output Random select 2 input GND Active 6 Status 3 output Random select 3 input GND Active 7 Status 4 output Random select 4 input GND Active 8 Return To Last State Input GND Active 9 Briefer Activate Input GND Active BNC1 Through BNC4 Pin Description 1 Center Video INPUT 2 Shield Video INPUT BNC5 Pin Description 1 Center Video OU...

Page 14: ...nput are defined below as follows PIN NUMBER ACTIVE STATE INACTIVE STATE P1 3 through P1 7 Momentary Ground 3 0VDC for 50msec Open pulled up to apx 28V P1 8 Mom or Const GND 3VDC Open pulled up to apx 28V P1 9 Constant Ground 3VDC Open pulled up to apx 28V Active and inactive states for each output are defined below as follows PIN NUMBER ACTIVE STATE INACTIVE STATE P1 4 through P1 7 Constant Groun...

Page 15: ...hes 3 and 4 it will not be selected The OUTPUT STATUS RANDOM SELECT PINs share the same physical connector pin 4 3 Output Status In both SEQUENCE SELECT and RANDOM SELECT modes the OUTPUT STATUS RANDOM SELECT PINs can be used as external status indicators The currently selected source s corresponding OUTPUT STATUS pin will be actively driven to ground This pin is capable of sinking sufficient curr...

Page 16: ...ng LED to illuminate The four Status LEDs will illuminate when the corresponding OUTPUT STATUS RANDOM SELECT pin is activated grounded or to indicate which input channel is currently selected Note these four Status LEDs provide the same status information as the OUTPUT STATUS RANDOM SELECT PINs 4 7 Power Up Switch Input Tests Upon power up the VSS 401 checks the state of the SEQUENCE SELECT PIN al...

Page 17: ...l Document 540335 Rev IR 10 2006 Page 16 of 21 4 8 Configuration Dip Switches Eight DIP switches allow the VSS 401 x to be configured as needed Use a standard Phillips head screwdriver to remove the cover plate on the front of the unit Cover Plate Cover Plate removed ...

Page 18: ... the input video source to Input 1 DIP switches 5 through 8 select 75Ω termination for each input Normally video sources are back terminated with 75 Ω to match interconnecting cabling impedance If termination is no concern these input terminations may be turned off When un terminated the input impedance is high 10K Ω Table 1 Configuration DIP Switch Table Switch Description Function 1 Briefer Chan...

Page 19: ...2 T OFF OFF OFF OFF ON ON ON ON VSS 04 08 NT OFF OFF OFF OFF OFF OFF OFF OFF VSS 04 08 T OFF OFF OFF OFF ON ON ON ON VSS 02 01 OFF OFF OFF ON ON ON ON ON VSS 02 02 ON OFF OFF ON ON ON ON ON VSS 03 05 OFF OFF ON OFF ON ON ON ON VSS 03 05 T OFF OFF ON OFF ON ON ON ON VSS 03 06 NT OFF OFF ON OFF OFF OFF OFF OFF VSS 04 02 OFF OFF OFF OFF ON ON ON ON VSS 04 06 OFF OFF OFF OFF ON ON ON ON VSS 04 07 OFF ...

Page 20: ...viced by a qualified service facility 5 2 General Troubleshooting Procedures Verify power to the unit by rechecking 28 VDC power is applied to the proper pins on the unit Use a voltmeter to verify correct level Remove power from the unit for at least one 1 minute and reapply power Recheck all connections to the unit for security Check all harness runs for possible pinching Recheck all pinouts for ...

Page 21: ...nc VSS 401 x Installation and Operation Manual Document 540335 Rev IR 10 2006 Page 20 of 21 7 0 Reference Drawings The following diagrams show the unit dimensions mounting locations and connector locations for the VSS 401 x ...

Page 22: ...Audio International Inc VSS 401 x Installation and Operation Manual Document 540335 Rev IR 10 2006 Page 21 of 21 ...

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