VXI VM4016 - page 21

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VM4016 Programming 21

FETCH:RAW?

The FETCh:RAW query returns the 16-bit value that represents the current unconditioned

(unmasked and non-inverted) state of the inputs. It is important to note that the above information

is also available at the register level at offset 0x20.

FETCH:RAW? No query parameters

EXAMPLES

FETch:RAW? Returns the state of the unconditioned

1 (unmasked and non-inverted) inputs

Channel 1.

FETC:RAW? All 16 channels crossed the programmed

65535 threshold.

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