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Envision Peripherals Theoryofoperation, NV3128 RS-422A Machine-Control Data Routing Switch

Models: NV3128

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CHAPTER4: THEORYOFOPERATION

NV3128 RS-422A Machine-Control Data Routing Switch

4-1

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Envision Peripherals manual Theoryofoperation, NV3128 RS-422A Machine-Control Data Routing Switch

Contents

NV3128 ManualPartNumberMN3128-00BRoutingSwitch Instruction Manual NVISIONModelNV3128Manual,Edition2 Printed in the U.S.A PrintingHistoryCopyright AllRightsReservedWarrantyStatement Year2000WarrantyStatementDisclaimer Telephone TechnicalSupportFCCUSAComplianceStatement EuropeanCommunityCEDeclarationofConformanceSymbolsandTheirMeanings ImportantSafeguardsandNoticesWarnings Cautions with Yellow Stripe NorthAmericanPowerSupplyCordsInternationalPowerSupplyCords Brown Line Blue Neutral Ground Earth Green or Green4. THEORY TABLEOFCONTENTSPage CHAPTER1GENERALINFORMATION NV3128 RS-422A Machine-Control Data SwitchNV3128 RS-422A Machine-Control Data Switch CHAPTER 1 - GENERALINFORMATION 1.1 GENERALNV3128 RS-422A Machine-Control Data Switch NV3128 RS-422A Machine-Control Data Switch 1.2 ARCHITECTURE BACKGROUNDNV3128 RS-422A Machine-Control Data Switch Because commands are broadcast on one balanced pair and responses received on another, the systems crosspoint count, wiring density and complexity are inherently double that of a video or audio router. Fig. 1.2 shows the two- level connection required to implement a route through a conventional data switch. To pass through the switch, the connection must be separated into two components the command, which travels from source to destination, and the response, which returns through the switch from destination to source. Cables are split such that transmitting pins from both machines are hooked to switch input blocks, and receivers to output blocks. Additionally, the router-control system must be highly specialized, for it now must address two connections with every connect command it issues NV3128 RS-422A Machine-Control Data SwitchNV3128 RS-422A Machine-Control Data Switch To further complicate matters, the sense of transmit and receive connections in many modern machines is switchable. That is, internal circuitry within the machine reassigns the interface pin assignments to allow it to operate in either controlled or controlling mode. Fig. 1.3 illustrates the physical pin swapping within each of two directly connected devices. On most units the changeover is a physical switch, but on some, such as the Sony D1 VTR, the pin flip is under software control. In either case, the traditional routing switch cannot adapt to a reversal of data direction, and thus severely compromises a systems flexibility. Referring again to Fig. 2, note that the physical connection fixes the operating mode - controlled or controlling - of the device. If pin pair 3/8 from a machine is connected to a router input, then that machine is a controlling device from now until someone gets out a crimping tool and rewires the connectionNV3128 RS-422A Machine-Control Data Switch A SOLUTIONNV3128 RS-422A Machine-Control Data Switch DYNAMIC PORTSCROSSPOINTARCHITECTURE 1-10NV3128 RS-422A Machine-Control Data Switch NV3128 RS-422A Machine-Control Data Switch 1-111-12 MULTIDROP COMMAND CHAINS1.3 I/O 1.4 PHYSICALNV3128 RS-422A Machine-Control Data Switch 1.6 SYSTEM SPECIFICATIONS1.5 ANCILLARY EQUIPMENT 1-13INPUTS/OUTPUTS TABLE1-1NV3128SPECIFICATIONS1-14 NV3128 RS-422A Machine-Control Data SwitchNV3128 RS-422A Machine-Control Routing Switch CHAPTER 2 INSTALLATIONNV3128 RS-422A Machine-Control Routing Switch CHAPTER TWO - INSTALLATION 2.1 HARDWARE INSTALLATIONNV3128 RS-422A Machine-Control Routing Switch NV3128 RS-422A Machine-Control Routing Switch a. LEDs on the Power Supply front panel should glowNV3128 RS-422A Machine-Control Routing Switch FIGURE 2.1 FRAME INSTALLATIONNV3128 RS-422A Machine-Control Routing Switch 2.2 CONFIGURATION2.2.1 THE UNIVERSAL CONTROL OR COMMAND INTERPRETER 2.2.2 PARTITIONING OBSOLETES293 PARTITION DIP SWITCHES OBSOLETEPARTITION BIT SWITCH - SECTION B NV3128 RS-422A Machine-Control Routing SwitchNV3128 RS-422A Machine-Control Routing Switch SETTINGSENABLE s8 RE-INITIALIZE BIT/MULTIDROP ENABLE s7MEANING SETTINGS2.2.3 MATRIX CONTROL II JUMPERS OBSOLETE JUMPERRS-232 2.2.4 CONFIGURING THE SERIAL INTERFACE OBSOLETE2.2.4.1 JUMPER SETTINGS OBSOLETE RS-422ANV3128 RS-422A Machine-Control Routing Switch 2.2.6 CONFIGURING THE DIAGNOSTIC INTERFACE OBSOLETE2.2.5 PARALLEL INTERFACE OBSOLETE 2-11FLOAT SIGNALENABLED DISABLEDREFERENCE INPUT GROUND OBSOLETE 2.2.7 CONFIGURING THE REFERENCE INPUTFUNCTION FLOATINGRS-422A 2.3.2 CABLING THE SERIAL COMMAND INTERFACE2.3 CABLING THE NV3128 2.3.1 DATA I/ONV3128 RS-422A Machine-Control Routing Switch ControllingDeviceControlledDevice 2-151. Configure the Control Interface Module as a DTE RS232 OBSOLETERS-232 DCE VS. DTE DECISION OBSOLETE 2-16NV3128 RS-422A Machine-Control Routing Switch 2-179-PIN CONNECTOR 25-PIN CONNECTORNV3128 RS-422A Machine-Control Routing Switch 2.4 ADDING A REDUNDANT CONTROLLER2.5 IMPLEMENTING HOT CHANGEOVER OBSOLETE 2-18NV3128 RS-422A Machine-Control Routing Switch 2.6 PC DIAGNOSTIC INTERFACE UNIDIAG/NVUTILSCABLING COMPLETE 2-19MACHINE CONTROL CONNECTORS 1 2-20NV3128 RS-422A Machine-Control Routing Switch CONTROL SYSTEM CONNECTORS UNIDIAG REAR CONNECTOR VIDEO REF INPUTS 12-21 NV3128 RS-422A Machine-Control Routing SwitchFIG 2-3. REAR CONNECTIONS OLD FRAME NVTAKE 2.4 PC-BASED SOFTWARE INSTALLATION OBSOLETEINSTALLATION GENERAL========================= SOFTWARE INSTALLATION FIXED DISKE. SAMPLE INSTALL SESSION NVTAKE V 1NV3128 RS-422A Machine-Control Routing Switch HARDWARE CONFIGURATIONOPERATION FROM A FLOPPY DISK 2-24CHAPTER3OPERATION NV3128 RS-422A Machine Control Data Routing SwitchNV3128 RS-422A Machine Control Data Routing Switch CHAPTER 3 - OPERATIONS 3.1 CONNECTION NOTESNV3128 RS-422A Machine Control Data Routing Switch 3.1.1 POINT-TO-POINT CONNECTION RULES 3.1.2 MULTIDROP CONNECTION RULESNV3128 RS-422A Machine Control Data Routing Switch The following information applies only to older systems with the 3.2 COMPUTER UTILITIES OBSOLETECommand Interpreter module. Newer systems with the Universal NV3128 RS-422A Machine Control Data Routing SwitchOPERATIONS 3.2.1 OPERATING INSTRUCTIONS - NVTAKE OBSOLETEINVOCATION NVTAKE H U V E R 12SOURCE ADDRESS F1 SENDING A SINGLE TAKEEXAMPLE NV3128 RS-422A Machine Control Data Routing SwitchF9 - BUILD A SALVO TABLE NV3128 RS-422A Machine Control Data Routing SwitchThe F10 function key loads a file from the current directory from which NVTAKER was launched. The program asks for the name of the file defining the salvo. Enter the name with no extension F10 - LOAD A SALVO FROM DISKF2 - SEND A SALVO NV3128 RS-422A Machine Control Data Routing SwitchF6 - LIST DESTINATIONS CONNECTED TO A SOURCE QUERYING SYSTEM CONNECTIONS VISTEK PROTOCOL ONLYF4 - QUERY A SINGLE CROSSPOINT F5 - QUERY MULTIPLE CONNECTIONS3-11 3.2.2 OPERATING INSTRUCTIONS - NVMAP OBSOLETEINVOCATION NVMAP H U V E R OPERATIONNV3128 RS-422A Machine Control Data Routing Switch 3-123-13 NV3128 RS-422A Machine Control Data Routing SwitchScreen 3-14 NV3128 RS-422A Machine Control Data Routing SwitchEditing the scramble map CHAPTER4 THEORYOFOPERATION NV3128 RS-422A Machine-Control Data Routing SwitchNV3128 RS-422A Machine-Control Data Routing Switch NV3128 RS-422A Machine-Control Data Routing Switch CHAPTER FOUR - THEORY OF OPERATION4.1 SYSTEM 4.1.1 CONTROL STRUCTURENV3128 RS-422A Machine-Control Data Routing Switch ASSY EM0038-XX 4.2.1 I/O CONNECTOR INTERFACE4.2.2 SIGNAL BACKPLANE 4.2 CIRCUIT OPERATIONOUTPUT DATA 4.2.3 CROSSPOINT MODULE ASSY EM0041-XXINPUT DATA CROSSPOINTSNV3128 RS-422A Machine-Control Data Routing Switch 4.2.4 I/O ASSEMBLY EM0040-XXMAPPING Further, the assembly contains all circuitry required to configure theNV3128 RS-422A Machine-Control Data Routing Switch PARTITIONING PARALLEL INTERFACE COMMAND INTERPRETER ONLYPOWER REGULATION ASYNCHRONOUS TIMING4.2.5 POWER SUPPLY ASSY PS2001-XX 4-10NV3128 RS-422A Machine-Control Data Routing Switch 4-11 NV3128 RS-422A Machine-Control Data Routing SwitchMetal oxide varistors DV1 and DV2 clamp voltage spikes on the AC input lines to safe levels NV3128 RS-422A Machine-Control Data Routing Switch 4-12NV3128 RS-422A Machine Control Data Routing Switch CHAPTER 5 MAINTENANCEAND TROUBLESHOOTINGNV3128 RS-422A Machine Control Data Routing Switch 5.3 RELIABILITY CHAPTER 5 - MAINTENANCE AND TROUBLESHOOTING5.2 SCHEDULED MAINTENANCE 5.1 CUSTOMER SUPPORTNV3128 RS-422A Machine Control Data Routing Switch 5.4 TROUBLESHOOTING5.4.1 ISOLATING FAULTS POWERNV3128 RS-422A Machine Control Data Routing Switch SIGNAL PATHMAPPING AND COMMAND PROBLEMS 1. Route the problem signal to a new crosspoint/output addressNV3128 RS-422A Machine Control Data Routing Switch NV3128 RS-422A Machine-Control Data Routing Switch GLOSSARYNV3128 RS-422A Machine-Control Data Routing Switch NV3128 RS-422A Machine-Control Data Routing Switch GLOSSARYAES/EBU NTSC NV3128 RS-422A Machine-Control Data Routing SwitchVoltage Controlled Crystal Oscillator Picture element of a television signalNV3128 RS-422A Machine-Control Data Routing Switch VCXONV3128 RS-422A Machine-Control Data Routing Switch INDEX Index-1NV3128 RS-422A Machine-Control Data Switch NV3128 RS-422A Machine-Control Data Switch Index-2Index-3 NV3128 RS-422A Machine-Control Data SwitchIndex Jumper and Switch Settings 2-6 Jumper J1 - 115/230 VAC Index-4NV3128 RS-422A Machine-Control Data Switch I/O Assembly theorySimplex Index-5NV3128 RS-422A Machine-Control Data Switch ST type connectorNV3128 RS-422A Machine-Control Data Switch Index-6