Tektronix vx4380 Status and Events

VX4380 256-Crosspoint Relay Matrix Module User Manual 4–1

Status and Events

The Status and Event Reporting System reports asynchronous events and errors

that occur in the VX4380 256-Crosspoint Relay Matrix Module. This system

consists of four 8-bit registers and two queues that you access through the

command language. You can use these registers and queues to query the

instrument status and control the interrupts that report events.

In general, after an interrupt occurs, first conduct a serial poll, query the registers

to see why the interrupt occurred, and then send the SYSTem:ERRor? query to

see a descriptive error message.

This section describes the four registers and two queues of the Status and Event

Reporting system. For each register, you are given a description, a table

describing all of the bits, and an example of how to use the register.

The Status and Event Reporting process, synchronizing programming com-

mands, and the system messages are also described in this section.

Status and Event Reporting System

The Status and Event Reporting system monitors and reports such events as an

error occurring or the availability of a response to a query. This system includes

descriptions of the following registers and queues:

HStatus Byte Register

HService Request Enable Register

HStandard Event Status Register

HEvent Status Enable Register

HOutput queue

HSystem Error and Event queue

The Status Byte Register, shown in Table 4–1, summarizes information from

other registers. Use a serial poll or a *STB? query to read the contents of the

Status Byte Register. The response is the sum of the decimal values for all bits

set. When you use a serial poll, bit 6 shows Request Service information. When

you use the *STB? query, bit 6, the Master Status Summary bit, indicates that

bits 5, 4, or 2 may be set.

Status Byte Register

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