Envision Peripherals NV3128 manual Crosspoint Module Assy EM0041-XX, Input Data, Crosspoints, Misc

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4.2.3 CROSSPOINT MODULE: ASSY EM0041-XX

INPUT DATA

Input signal data flows into the crosspoint module from the signal backplane. The data is resistor coupled into buffer/driver integrated circuits, then passed onto the data bus for application to the crosspoint ICs.

Control data from the Command Interpreter arrives through the backplane and into a similar circuit. The control data contains two buses: a register bus that addresses specific crosspoint outputs and a data bus that holds the address of the input to which an output will connect.

CROSSPOINTS

The crosspoint module uses four 64x64 crossbar ICs to cross- connect any of 128 outputs with any of the 128 inputs in the crosspoint matrix. The chip’s address registers are double buffered. Control information is stored in a load register, then transferred to the active register on arrival of a strobe pulse, the signal "BNKLDI".

OUTPUT DATA

Outputs from the crosspoint chips are driven over the signal backplane to the I/O modules by 16 octal buffer/line-driver integrated circuits.

MISC:

A submodule and associated circuitry process raw DC from the power supply to produce a carefully regulated and current limited +5VDC for distribution across the module.

NV3128 RS-422A Machine-Control Data Routing Switch

4-6

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Contents Nvision PrintingHistory WarrantyStatement TechnicalSupport ImportantSafeguardsandNotices Page Page NorthAmericanPowerSupplyCords Tableofcontents Page Generalinformation NV3128 RS-422A Machine-Control Data Switch Generalinformation GeneralArchitecture Background NV3128 RS-422A Machine-Control Data Switch NV3128 RS-422A Machine-Control Data Switch NV3128 RS-422A Machine-Control Data Switch Solution Dynamic Ports Crosspointarchitecture NV3128 RS-422A Machine-Control Data Switch Multidrop Command Chains PhysicalSystem Specifications Ancillary Equipment1NV3128SPECIFICATIONS Installation NV3128 RS-422A Machine-Control Routing Switch Chapter TWO Installation NV3128 RS-422A Machine-Control Routing Switch Frame Installation Universal Control or Command Interpreter Partitioning ObsoletePartition DIP Switches Obsolete Settings RE-INITIALIZE BIT/MULTIDROP Enable s7Matrix Control II Jumpers Obsolete Input Length s8-s5RS-422A RS-232 Configuring the Diagnostic Interface Obsolete Parallel Interface ObsoleteJumper Enabled Disabled Configuring the Reference Input Reference Input Ground ObsoleteCabling the Serial Command Interface Cabling the NV3128PIN RS232 Obsolete RS-232 DCE VS. DTE Decision ObsoletePIN Connector Adding a Redundant Controller Implementing HOT Changeover ObsoletePC Diagnostic Interface UNIDIAG/NVUTILS Cabling CompleteRear Connections NEW Frame Rear Ections OLD Frame Rearconnections OLD Frame PC-BASED Software Installation Obsolete InstallationGeneral NvtakeSoftware Installation Fixed Disk Sample Install SessionHardware Configuration Operation from a Floppy DiskOperation NV3128 RS-422A Machine Control Data Routing Switch Operations Connection NotesPOINT-TO-POINT Connection Rules Multidrop Connection RulesComputer Utilities Obsolete Operating Instructions Nvtake Obsolete InvocationOperations F3 Change Router LevelF1 Sending a Single Take F9 Build a Salvo Table F10 Load a Salvo from Disk F2 Send a SalvoF5 Query Multiple Connections F6 List Destinations Connected to a SourceOperating Instructions Nvmap Obsolete OperationNV3128 RS-422A Machine Control Data Routing Switch Screen NV3128 RS-422A Machine Control Data Routing Switch Theoryofoperation NV3128 RS-422A Machine-Control Data Routing Switch System Control StructureNV3128 RS-422A Machine-Control Data Routing Switch 1 I/O Connector Interface Signal BackplaneCircuit Operation Assy EM0038-XXCrosspoint Module Assy EM0041-XX Input DataCrosspoints Output Data4 I/O Assembly EM0040-XX Mapping Parallel Interface Command Interpreter only Power RegulationAsynchronous Timing PartitioningPower Supply Assy PS2001-XX NV3128 RS-422A Machine-Control Data Routing Switch NV3128 RS-422A Machine-Control Data Routing Switch Maintenanceand Troubleshooting NV3128 RS-422A Machine Control Data Routing Switch Reliability Scheduled MaintenanceCustomer Support Power TroubleshootingIsolating Faults Signal Path Mapping and Command ProblemsNV3128 RS-422A Machine Control Data Routing Switch Glossary NV3128 RS-422A Machine-Control Data Routing Switch AES/EBU MOV Vcxo NV3128 RS-422A Machine-Control Data Routing Switch Index NV3128 RS-422A Machine-Control Data Switch Index-2 Index NV3128 RS-422A Machine-Control Data Switch Index-4 NV3128 RS-422A Machine-Control Data Switch Index-5 NV3128 RS-422A Machine-Control Data Switch Index-6