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Studio Technologies 46A, User Manual

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Model 46A User Guide 

Issue 1, September 2014 

Studio Technologies, Inc. 

Page 3

Table of Contents

Introduction ...................................................................    5
Installation .....................................................................  10
Configuration ................................................................  16
Advanced Configuration ...............................................  17
Operation ......................................................................  20
Advanced Operation .....................................................  24
Technical Notes .............................................................  25
Specifications ................................................................  27
Appendix A—Interfacing with RTS® Matrix  

Intercom Systems .........................................................  28
Appendix B—Interfacing with Riedel® Artist™  

Matrix Intercom Systems ..............................................  29
Appendix C—Interfacing with Clear-Com®  

Matrix Intercom Systems ..............................................  30
Block Diagram

Summary of Contents for 46A

Page 1: ...pyright 2014 by Studio Technologies Inc all rights reserved www studio tech com 50115 0914 Issue 1 User Guide Issue 1 September 2014 This User Guide is applicable for serial numbers M46A 01151 and lat...

Page 2: ...This page intentionally left blank...

Page 3: ...10 Con guration 16 Advanced Con guration 17 Operation 20 Advanced Operation 24 Technical Notes 25 Speci cations 27 Appendix A Interfacing with RTS Matrix Intercom Systems 28 Appendix B Interfacing wit...

Page 4: ...Issue 1 September 2014 Model 46A User Guide Page 4 Studio Technologies Inc This page intentionally left blank...

Page 5: ...rate events and industrial testing environments Standard audio connectors are used for all input and output signals The Model 46A mounts in Model 46A Back Panel Model 46A Front Panel one space of a st...

Page 6: ...rted Each interface s 30 volt DC intercom power source ensures that systems requiring long intercom cable runs will function correctly The circuitry s output regulation is such that little change in t...

Page 7: ...disabling open microphones the auto nulling process can achieve better performance 4 Wire Interfaces Associated with the 4 wire portion of the Model 46A s interfaces are analog line level inputs and o...

Page 8: ...ircuitry that under software control applies 200 ohm terminating impedances to the 2 wire party line circuits This along with other circuitry that monitors DC voltages pres ent on the 2 wire circuits...

Page 9: ...del 46A s design process conversa tions with industry experts quickly made it apparent that installing and con guring existing 2 wire to 4 wire interface units was invariably a time consuming aggravat...

Page 10: ...e an AC mains cord Your dealer or distributor should provide an AC mains cord for other destinations Locating the Model 46A The Model 46A s mounting location will dictate the length of the cable runs...

Page 11: ...les so that pin 2 is signal high or hot pin 3 is low or cold and pin 1 is shield If connecting a source in this manner results in hum or noise it s possible that removing the shield connection from pi...

Page 12: ...cted appropriately For convenience the 2 wire PL intercom circuits can be connected to the Model 46A by way of four 3 pin male XLR connectors two are located on the back panel and two on the front The...

Page 13: ...functions auto nulling for interface 1 auto nulling for interface 2 and a special mic kill function Remote con trol of the auto nulling functions provides a resource identical to that of the front pan...

Page 14: ...tter yet be terminated onto another connector such as a 9 pin D subminiature type There are several ways of preparing to connect to the remote control inputs The easiest means is to purchase an interc...

Page 15: ...er of 100 to 240 V 50 60 Hz As a universal mains input device there are no switches to set or jumpers to install A 3 pin IEC 320 C14 inlet connector on the Model 46A mates with a detachable mains cord...

Page 16: ...intercom channels Two 3 pin male XLR connectors one located on the Model 46A s front panel and one on the back panel are used to intercon nect the Model 46A with the intercom user devices When switch...

Page 17: ...from Riedel The 8 dBu setting is provided speci cally when interconnecting the Model 46A with audio signals associ ated with an RTS ADAM Series of matrix intercom system This includes the related RVO...

Page 18: ...terminate function is ac tive When switch 1 is in its on up posi tion the auto terminate function associated with each interface is disabled Repeating for clarity the auto terminate function ap plies...

Page 19: ...e for applications in which the two audio paths associated with each interface are used with independent party line intercom circuits This situation might arise when two Clear Com single channel inter...

Page 20: ...with the approximate level of 4 dBu is present on the associated 4 wire output connector Another example would be a Model 46A interface con gured for 8 dBu operation and 18 and 12 dB LEDs are lit This...

Page 21: ...io level Con rm that the DIP switch associated with each interface is set to match the nominal level of the con nected devices RTS user devices have a nominal level of 10 dBu Clear Com devic es typica...

Page 22: ...to use RTS BP 325 beltpacks Select the con nected devices so that their total current doesn t exceed 315 mA That s not always the easiest gure to calculate but a web search will generally nd speci ca...

Page 23: ...ctive An actual auto null sequence starts by muting the 4 wire input and output signal paths associated with the speci c channel to be nulled Then a short period of 24 kHz signal is sent out the 2 wir...

Page 24: ...clean As a visual aid LEDs on the front panel will display the DC power status of pins 2 and 3 But when auto terminate is not active the LEDs will no longer indicate the intercom circuit s terminatio...

Page 25: ...oftware Version Display A special Model 46A power up sequence allows the unit s software version number to be displayed This is useful when work ing with factory personnel on application support and t...

Page 26: ...ity Not a TW 12B Replacement The Model 46A will provide a high level of performance over its range of intended tasks But it s not intended to act as a universal 2 wire to 2 wire interface such as is p...

Page 27: ...apacitive 2 wire party line loads Nulling Method automatic upon user initiation processor implements digital control of analog cir cuitry null settings stored in non volatile memory Nulling Line Imped...

Page 28: ...ser Guide Page 28 Studio Technologies Inc Interfacing RTS Matrix Intercom Systems with the Model 46A Interface Appendix A ADAM Matrix Intercom System Analog Ports to Model 46A Interface RVON I O I O C...

Page 29: ...Model 46A User Guide Issue 1 September 2014 Studio Technologies Inc Page 29 Interfacing Riedel Artist Matrix Intercom System Analog Ports with the Model 46A Interface Appendix B...

Page 30: ...Issue 1 September 2014 Model 46A User Guide Page 30 Studio Technologies Inc Interfacing Clear Com Matrix Intercom System Analog Ports with the Model 46A Interface Appendix C...

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