Tektronix vx4380 Glossary

VX4380 256-Crosspoint Relay Matrix Module User Manual Glossary–1

Glossary

The terms in this glossary are defined as used in the VXIbus System. Although

some of these terms may have different meanings in other systems, it is

important to use these definitions in VXIbus applications. Terms which apply

only to a particular instrument module are noted. Not all terms appear in every

manual.

Accessed Indicator

An amber LED indicator that lights when the module identity is selected by

the Resource Manager module, and flashes during any I/O operation for the

module.

ACFAIL*

A VMEbus backplane line that is asserted under these conditions: 1) by the

mainframe Power Supply when a power failure has occurred (either AC line

source or power supply malfunction), or 2) by the front panel ON/

STANDBY switch when switched to STANDBY.

Asynchronous Communication

Communications that occur outside the normal “command-response” cycle.

Such communications have higher priority than synchronous communica-

tion.

Backplane

The printed circuit board that is mounted in a VXIbus mainframe to provide

the interface between VXIbus modules and between those modules and the

external system.

Bus Arbitration

In the VMEbus interface, a system for resolving contention for service

among VMEbus Master devices on the VMEbus.

Bus Timer

A functional module that measures the duration of each data transfer on the

Data Transfer Bus (DTB) and terminates the DTB cycle if the duration is

excessive. Without the termination capability of this module, a Bus Master

attempt to transfer data to or from a non-existent Slave location could result

in an infinitely long wait for the Slave response.

Client

In shared memory protocol (SMP), that half of an SMP channel that does not

control the shared memory buffers.

CLK10

A 10 MHz, ±100 ppm, individually buffered (to each module slot),

differential ECL system clock that is sourced from Slot 0 and distributed to

Contents

Main Page WARRANTY Page Table of Contents Getting Started Operating Basics Syntax and Commands Status and Events Page General Safety Summary Injury Precautions Product Damage Precautions Safety Terms and Symbols Certifications and Compliances Page Page Preface Conventions Page Page Page Getting Started Product Description Page Getting Started = Figure 11: VX4380 Functional Block Diagram VX4380 256-Crosspoint Relay Matrix Module User Manual 13 = Fuses Accessories Controls and Indicators Switches LEDs BITE (Built-in Test Equipment) Page Configuration Logical Address Switches IEEE-488 Address VMEbus Interrupt Level Select Switch Installation Tools Required Requirements and Cautions Installation Procedure Installation Checklist Functional Check Self Test Operational Check SYSFAIL* Operation Page Page Page Operating Basics Functional Overview Power-on Instrument I/O: VXIbus Basics Configuration Registers Page Page Page Command Syntax Page Syntax Example SCPI/IEEE 488.2 Command Elements Page Page Page Page Page Page Functional Command Groups System Commands Module Commands Functional Command Groups 312 VX4380 256-Crosspoint Relay Matrix Module User Manual Table 31: Summary of VX4380-Specific SCPI Commands Table 32: Summary of IEEE-488.2 Common Commands Functional Command Groups VX4380 256-Crosspoint Relay Matrix Module User Manual 313 Table 32: Summary of IEEE-488.2 Common Commands (Cont.) Page Command Descriptions ABORt Page CLOSe Page Page Page ID? INITiate Page Page MODule Page Page Page OPEN Page Page Page Page OUTPut PFAil SCAN Page Page Command Descriptions 340 VX4380 256-Crosspoint Relay Matrix Module User Manual STATus Page Page Page SYSTem Page Page Page TRIGger Page Page Page IEEE-488.2 Common Commands *CLS *ESE <NRf> *ESE? *ESR? *IDN? *OPC *OPC? *RST *SRE <mask> *SRE? *STB? *TRG *TST? *WAI Page Page Page Status and Events Status and Event Reporting System Status Byte Register Service Request Enable Standard Event Status Event Status Enable The Output Queue The System Error and Event Queue Status and Events VX4380 256-Crosspoint Relay Matrix Module User Manual 45 Status and Event Reporting Process Messages Page Page Page Page VX4380 256-Crosspoint Relay Matrix Module User Manual A1 Appendix A: Specifications Table A1: VXI Instrument Characteristics A2 VX4380 256-Crosspoint Relay Matrix Module User Manual Table A1: VXI Instrument Characteristics Table A2: Environmental/Reliability Characteristics Table A3: VX4380-Specific Characteristics VX4380 256-Crosspoint Relay Matrix Module User Manual A3 Table A3: VX4380-Specific Characteristics (Cont.) Table A4: Relay Switching Characteristics A4 VX4380 256-Crosspoint Relay Matrix Module User Manual Table A5: Switching Channel Characteristics Table A6: Signal Path Table A7: Cabling Table A7: Power Distribution Page Page Appendix B: Input/Output Connections VX4380 256-Crosspoint Relay Matrix Module User Manual B3 Table B1: VX4380 Upper Connector (J401) Pinout Appendix B: Input/Output Connections B4 VX4380 256-Crosspoint Relay Matrix Module User Manual Table B2: VX4380 Lower Connector (J1201) Pinout Page Page Appendix C: Examples Example 1 Page Page Example 2 Appendix D: User Service Performance Verification Preventive Maintenance Troubleshooting Page Appendix E: Replaceable Parts Parts Ordering Information Module Servicing Using the Replaceable Parts List Abbreviations Mfr. Code to Manufacturer Cross Index VX4380 256-Crosspoint Relay Matrix Module User Manual E3 Manufacturers Cross Index Mfr. Code Manufacturer Address City, State, Zip Code E4 VX4380 256-Crosspoint Relay Matrix Module User Manual Replaceable Parts List Effective Serial No. Part Number Serial No. Fig. & Index Number Tektronix VX4380 256-Crosspoint Relay Matrix Module User Manual E5 Figure E1: VX4380 Exploded View Page Page Page Glossary Page Page Page Page Page Page Page VX4380 256-Crosspoint Relay Matrix Module User Manual Index1 Index A C D E T W