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Telex 38109-977 manual Chan Start Video Chroma Audio

Models: 38109-977

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Table 6.1 Standard US television channel allocations.

Chan	Start	Video	Chroma	Audio

2	54	55.250	58.8295	59.750

3	60	61.250	64.8295	65.750

4	66	67.250	70.8295	71.750

5	72	73.250	76.8295	77.750

6	78	79.250	82.8295	83.750

7	174	175.250	178.8295	179.750

8	180	181.250	184.8295	185.750

9	186	187.250	190.8295	191.750

10	192	193.250	196.8295	197.750

11	198	199.250	202.8295	203.750

12	204	205.250	208.8295	209.750

13	210	211.250	214.8295	215.750

14	470	471.250	474.8295	475.750

15	476	477.250	480.8295	481.750

16	482	483.250	486.8295	487.750

17	488	489.250	492.8295	493.750

18	494	495.250	498.8295	499.750

19	500	501.250	504.8295	505.750

20	506	507.250	510.8295	511.750

21	512	513.250	516.8295	517.750

22	518	519.250	522.8295	523.750

23	524	525.250	528.8295	529.750

24	530	531.250	534.8295	535.750

25	536	537.250	540.8295	541.750

26	542	543.250	546.8295	547.750

27	548	549.250	552.8295	553.750

28	554	555.250	558.8295	559.750

29	560	561.250	564.8295	565.750

30	566	567.250	570.8295	571.750

31	572	573.250	576.8295	577.750

32	578	579.250	582.8295	583.750

33	584	585.250	588.8295	589.750

34	590	591.250	594.8295	595.750

35	596	597.250	600.8295	601.750

36	602	603.250	606.8295	607.750

37	608	Radio Astronomy
		Only

38	614	615.250	618.8295	619.750

39	620	621.250	624.8295	625.750

40	626	627.250	630.8295	631.750

41	632	633.250	636.8295	637.750

42	638	639.250	642.8295	643.750

43	644	645.250	648.8295	649.750

44	650	651.250	654.8295	655.750

45	656	657.250	660.8295	661.750

C h a p t e r 6 - I n t r o d u c t i o n t o W i r e l e s s I n t e r c o m S y s t e m s 91

Image 105

Telex 38109-977 manual Chan Start Video Chroma Audio

Contents

Handbook of Intercom Systems Engineering Fine Print Table of Contents Design of Party-Line Introduction to Matrix Design of WirelessDetermining Intercom Needs Page Page List of Figures Wireless Intercom Interfaced to Matrix Intercom Preface Page About the Authors Page Party-Line Systems IntroductionMatrix Systems Wireless SystemsWireless Intercom Examples AccessoriesExample of Interfacing a TW System to a Matrix System Matrix Before We BeginTally Rest Of The BookTwo-Wire Some DefinitionsParty-Line PL systems / Conference Line Intercom Systems Short History Brand Name Manufacturer Present Day Systems and ManufacturersSystem Components and Their Function Belt Pack Headset User Station Functional Description Speaker User Station Functional Description Master StationsSome Technical Notes About The Stations Above How Each System Works Four pin XLRFive pin XLR System Powering Headset User StationsSpeaker User Stations Outstanding Features of Each System CablingCall Lights Summary Limitations of Each SystemSome Definitions Short HistoryHow Each System Works System Components and Their FunctionLimitations of Each System Outstanding Features of Each SystemAudiocom intercom concept RTS TW intercom concept Overview Defining And Meeting Your NeedsApplication 1 Generic Single Channel Systems Generic single channel Audiocom system Audiocom Party-Line Intercom Equipment Listing #1Generic single channel Clear-Comsystem Clear-Com Party-Line Intercom Equipment Listing #1RTS TW Party-Line Intercom Equipment Listing #1 Application 2 Two-Channel System TV, School, CableClear-Com Party-Line Equipment Listing #2 Audiocom Party-Line Equipment Listing #2RTS TW Party-Line Equipment Listing #2 Application 3 Theater SystemAudiocom Party-Line Equipment Listing #3 Clear-Com Party-Line Equipment Listing #3RTS TW Party-Line Equipment Listing #3 Audiocom Application 4 Training SystemsClear-Combased training intercom system Clear-ComRTS TW Medium intercom system for television Application 5 Medium System for TelevisionHow an IFB Works IFB System One Way Communications SystemStudio and Some Field Applications Field Application, SportsField Application, ENG Electronic News Gathering Connecting Interfacing to Other Communications SystemsInterfacing Issues Typical Interfacing ProblemSignal / Data Conversion Level ProblemsModes Call LightProblems in Interfacing to Cameras Interfacing PracticeAlternatives for Interfacing to Television Cameras Headset Cable Lengths Some Practical ConsiderationsHeadphone Impedances Wiring Practices/Workmanship StandardsExtended Range On Part Or All Of The System Unbalanced vs. BalancedCrosstalk Through a Common Circuit Ground Cable ConsiderationsCrosstalk Through a Mutual Capacitance Of Two Conductors Low Crosstalk Approach To InterconnectionTemperature Range Consideration System Current/System Capacitances/LoadingCooling Requirements Magnetic Fields Hum Problems Moisture / Contamination ProtectionDefining and Meeting Your Needs Connecting Interfacing to Other Communications Systems IFB System One Way Communications SystemSome Practical Considerations Page Page Definitions Introduction to Matrix Intercom SystemsKP-32 is a good example of an advanced user station keypanel Example of Matrix Ports History of Matrix IntercomsX X X X X X Number of Users Number of Crosspoints Page Page Conventional Matrix vs. TDM Matrix Modern Day Matrix IntercomsSpecial Considerations ConfigurabilityAdvantages SizeConference or PL described above Ancillary FunctionsTypical User Station Keypanel More Complex Ancillary FunctionsPage Disadvantages CostComplexity You are in your kitchen QUICK, multiply 347.2 times Page Page RTS Matrix Intercom Systems Back-to-BasicsTypical Adam Matrix Connections Let’s get started To BeginStudio a FloorOther Control RoomPage Page RJ12 Modular Plug Cable ConsiderationsAudio and Data Considerations Polling IssuesVery Large Systems, Split Operation and Trunking A Comparison of Relative System Sizes Separate Studios, Separate Intercom Fixed Trunking Page Independent Matrices in 2 Studios Page Cascaded Trunking Interfacing Signal FormatsTW and Matrix Signal Flows Interconnecting Matrix, PL, and Wireless Systems10 Wireless Intercom Interfaced to Matrix Intercom + + 12 TW to Matrix Interface Software ConsiderationsAdam and Adam CS Basic Components Adam Page History of Wireless Intercoms Introduction to Wireless IntercomsPage First beltpack based wireless intercom system Modern Day Wireless IntercomsAn example of a modern day wireless intercom system Page Ntsc Channel Configuration Chan Start Video Chroma Audio Chan Start Video Chroma Audio Page Page Design of Wireless Intercom Systems Field An example of wireless transmission and reception An example of reflected RF waves Waves that are in phase combine to form a larger wave Interference An example of combining waves that are not 180 out of phase2A B = C + C = D3A 2B = C Transmitters and Receivers 10 Transmitter block diagram11 Receiver block diagram 12 Good linearity is a must for faithful signal reproduction Antenna & Cable Considerations Page 14 An example of a Yagi antenna Page Coaxial Cable Loss Chart InstallationPage Page Page Conference Versus Point-to-Point Requirements Determining Intercom NeedsPage General Overview Fixed vs. Mobile RequirementsPS15 Power Supply/MCP2 Rack Kit Determining Intercom Needs, two-wire, four-wire, or both?Small Studio or ENG Vehicle MCE325 Modular Programmable StationMedium Sized Studio and Mobile Intercom Headsets and Earsets not shownTW5W Splitter IFB325 Talent User Station803-G1G5 Master Station Two-wire Case Medium IntercomBOP220 Connector Translation Assembly PS31 Power SupplySystem Interconnect SAP1626 Source Assign PanelFour-wire Case Medium Intercom KP96-7 Keypanel Zeus DSP2400 MatrixTIF-2000 Intelligent Telco Interface MKP4-K Modular KeypanelPS15 Power Supply IFB828 IFB Power SupplySSA324 System-to-System Adapter SAP612 Source Assign PanelLarge Studio or Mobile Vehicle First Step--Determine the Size Determining the Makeup of the Intercom MatrixUsers IFB CircuitsSecond Step--Determine the Panels CamerasMiscellaneous Other Considerations in Determining Intercom Needs How old is Too Old? MaintenanceExpandability InteroperabilityBudget Glossary AWG O s s a r y CCU CPS Crosstalk Current Current Sources DSP EFP EIA GND Gpio Green Room Ground Ground Loop Potential Ibew IFB IR Drop Isolation Light Signaling Limiter Line Line Level Matrix Maximum SPL Mho Mic Micro µ Microcontroller NAB Nabet NEC Nema PLL PZM RFI RMS Smpte SPL O s s a r y Symbol for the unit of power, the watt Index IFB ISO STL VHF