VXI VM4016 - page 33

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VM4016 Programming 33

OUTPUT:POLARITY:EXTERNAL:LATCHED

The output polarity external latched command sets the polarity of the front panel latched interrupt

output. When the polarity is set to normal, the output will be low when there is an interrupt event.

When set to invert, the output will be high when there is an interrupt event.

OUTPut:POLarity:EXTernal:LATChed <polarity> Where <polarity> is either

NORMal or INVerted.

EXAMPLES

OUTPut:POLarity:EXTernal:LATChed NORM Sets the external latched output

polarity to low when an interrupt

occurs.

OUTPut:POLarity:EXTernal:LATChed? Returns the external latched output

NORM polarity as NORMal.

OUTP:POL:EXT:LATC INV Sets the external latched output

polarity to high when an interrupt

occurs.

OUTP:POL:EXT:LATC? Returns the external latched output

INV polarity as INVert.

Contents

Main VM4016 ANALOG COMPARATOR USERS MANUAL Page TABLE OF CONTENTS Page CERTIFICATION WARRANTY LIMITATION OF WARRANTY RESTRICTED RIGHTS LEGEND DECLARATION OF CONFORMITY Declaration of Conformity According to ISO/IEC Guide 22 and EN 45014 GENERAL SAFETY INSTRUCTIONS TERMS AND SYMBOLS WARNINGS WARNINGS (CONT.) SUPPORT RESOURCES Page S I FIGURE 1-1: VMIP PLATFORM INTRODUCTION V X I B U S Page www.vxitech.com VM4016 Preparation for Use 13 CHANNEL 16 OF FIGURE 1-3: VM4016 BLOCK DIAGRAM VM4016 GENERAL SPECIFICATIONS GENERAL SPECIFICATIONS S P REPARATION FOR U INSTALLATION CALCULATING SYSTEM POWER AND COOLING REQUIREMENTS SETTING THE CHASSIS BACKPLANE JUMPERS SETTING THE LOGICAL ADDRESS SET TO 255 SET TO 8 SET TO 168 TABLE 2-1: ANALOG COMPARATOR PIN OUTS 1 16 31 15 30 44 FIGURE 2-2: J200, J201 AND J202 PIN LOCATIONS S P EXAMPLES OF SCPI COMMANDS Page Page Page Page Page Page Page Page Page Page Page Page Page Page APPLICATION EXAMPLES SINGLE CHANNEL OPERATION VXI Technology, Inc. 36 VM4016 Programming - FIGURE 3-1: SINGLE CHANNEL OPERATION Page BRACKETING A VOLTAGE www.vxitech.com VM4016 Programming 39 DAC FIGURE 3-2: BRACKETING AN INPUT VOLTAGE Page REGISTER ACCESS EXAMPLES TABLE 3-1: REGISTER MAP Page PSEUDO REGISTER ACCESS VXI Page Page S C OMMAND D INTRODUCTION ALPHABETICAL COMMAND LISTING TABLE 4-1: IEEE 488.2 COMMON COMMANDS TABLE 4-2: INSTRUMENT SPECIFIC SCPI COMMANDS TABLE 4-3: SCPI REQUIRED COMMANDS COMMAND DICTIONARY COMMON SCPI COMMANDS *CLS *ESE *ESR? *IDN? *OPC *RST *SRE *STB? *TRG *TST? *WAI INSTRUMENT SPECIFIC SCPI COMMANDS FETCh:CONDitioned? FETCh:LATChed? FETCh:RAW? INHOUSE:CLEAR_LATCH INHOUSE:PSEUDO INHOUSE:REGINT INHOUSE:REG_ENABLE INPut:DEBounce INPut:MASK INPut:MASK:INTerrupt INPut:OFFSet INPut:POLarity INPut:RANGe OUTPut:POLarity:EXTernal:INTerrupt OUTPut:POLarity:EXTernal:LATChed REQUIRED SCPI COMMANDS STATus:OPERation:CONDition? STATus:OPERation:ENABle STATus:OPERation[:EVENt]? STATus:PRESet STATus:QUEStionable:CONDition? STATus:QUEStionable:ENABle STATus:QUEStionable[:EVENt] SYSTem:ERRor? SYSTem:VERSion? S T HEORY OF O INPUT RANGE CONTROL www.vxitech.com FIGURE 5-1: INPUT RANGE SELECTION VM4016 Theory of Operation 89 TO RELAY COILS SIGNAL COMPARISON FIGURE 5-2: SIGNAL COMPARISON INTERRUPT GENERATION FIGURE 5-3: INTERRUPT GENERATION I