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VXI VT1538A user manual Release April 28 VXI Technology, Inc 2031 Main Street, Irvine, CA 949

Models: VT1538A

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VT1538A

VT1538A

ENHANCED FREQUENCY/TOTALIZE/ PWM

SIGNAL CONDITIONING PLUG-ON

USER’S MANUAL

82-0093-000

Release April 28, 2003

VXI Technology, Inc.

2031 Main Street

Irvine, CA 92614-6509

(949) 955-1894

bus

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VXI VT1538A user manual Release April 28 VXI Technology, Inc 2031 Main Street, Irvine, CA 949, User’S Manual

Contents

Irvine, CA 949 82-0093-000 Release April 28 VXI Technology, Inc 2031 Main StreetENHANCED FREQUENCY/TOTALIZE/ PWM SIGNAL CONDITIONING PLUG-ON VT1538AVXI Technology, Inc Dynamic DAC Products INTRODUCTIONStatic DAC Products VXI Technology World Headquarters SUPPORT RESOURCESVXI Technology Cleveland Division VXI Technology Lake Stevens Instrument DivisionSignal Conditioning Plug-on User’s and SCPI Programming ManualAgilent Technologies E1538A Enhanced Frequency/Totalize/PWM Agilent 75000 Series CPage Agilent E1538A Enhanced Frequency/Totalize/PWM SCP About this ManualIntroduction Identifying the Plug-on IMPORTANT Configuring Input- Output direction Setting Configuration SwitchesConfiguring Channel Pull-up Resistor Connecting To The Terminal Module InstallationFigure 4. E1419A Option 11 Terminal Module Connections Recommended Signal Connections8 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Input and Output Characteristics VRS Mode Input Operation SCP channels 0 & 1 only Programming With SCPI Commands Configuring I/O Direction Configuring the ChannelsSetting the Input Threshold Level Checking the ID of the SCPreturns threshold value Determining the Input Threshold LevelTo set channels 40 through 43 to input digital states Reading Static Digital StateTotalize Positive or Negative Edge State Changes About Period and Frequency Measurements To measure frequency at channel 45 with aperture of 1 second For PERiod function, the E1538 spports two distinct measurement ranges Agilent E1538A Enhanced Frequency/Totalize/PWM SCP To measure period at channel 45 as the average of 1000 signal periodschlist specifies the channels that will read pulse widths Sense Quadrature Position The value read by the algorithm can range from Example of Rotational Velocity Sense Controlling Output Polarity Programming Output ChannelsOutput Static Digital State Variable Width Pulse Per Trigger Figure 17. Output Pulse-Width-Modulated Signal Variable Width Pulse Train PWM26 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Variable Frequency Fixed Width Pulse Train FM Figure 19. Output Square Wave Variable Frequency FM Variable Frequency Square-Wave Pulse Train FM28 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Rotationally Positioned Pulse Output Rotational Pulse Command Usage Rotational Pulse Mode Variable Angular Position, Preset Pulse Width by angleExample of variable position, preset width Variable Angular Position, Preset Pulse Width by timeFigure 21. Variable Position, Width Preset by Angle Rotational Pulse ModeFigure 22. Variable Position, Width Preset by Time Variable Pulse Width by angle, Preset Angular PositionRotational Pulse Mode Agilent E1538A Enhanced Frequency/Totalize/PWM SCP34 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Example of variable width by angle, preset positionExample of variable width by time, preset position Variable Pulse Width by time, Preset Angular PositionRotational Pulse Mode preset ch 47 pulse width to 15ms preset ch 46 pulse width to 10msFigure 24. Fixed Position, Variable Width by Time 36 Agilent E1538A Enhanced Frequency/Totalize/PWM SCPStepper Motor Control Use the command motor phase channel group can not be split across SCPs Figure 28. Half Step Mode, Full Speed, 4-Channel Figure 27. Full Step Mode, Full and Half Speed, 4-ChannelAgilent E1538A Enhanced Frequency/Totalize/PWM SCP 40 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Figure 29. Directly Driving 4-Phase Stepper MotorsAgilent E1538A Enhanced Frequency/Totalize/PWM SCP RST and *TST importantCommand Syntax SCPI Command ReferenceFor newer PageFor newer Command SyntaxPage units onlyINPutPOLarity? INPutPOLarityParameters CommentsINPutTHResholdLEVel level can be set to a resolution ofINPutTHResholdLEVel? ParametersOUTPutPOLarity? OUTPutPOLaritySend with VXIplug&play Function hpe14XXcmdReal64Q generatedRST Condition .001 sec Send with VXIplug&play Function hpe14XXcmd SENSeFREQuencyAPERtureParameters CommentsSENSeFREQuencyAPERture? Related Commands SENSFREQAPERSENSeFREQuencyLIMitLOWer ParametersSend with VXIplug&play Function hpe14XXcmd INITSENSeFREQuencyLIMitLOWer? Related Commands INPutPOLaritySENSeFUNCtionCONDition Returned Value .01667 to 250, The type is float32SENSeFUNCtionPERiod SENSeFUNCtionFREQuencyParameters ParametersSENSeFUNCtionQUADrature SENSeFUNCtionPWIDthParameters CommentsParameters SENSeFUNCtionRVELocitySend with VXIplug&play Function hpe14XXcmd Usage See “Sense Quadrature Position” on pageSend with VXIplug&play Function hpe14XXcmd ParametersUsage See “Sense Rotational Velocity” on page 54 Agilent E1538A Enhanced Frequency/Totalize/PWM SCPParameters SENSeFUNCtionTOTalizeSend with VXIplug&play Function hpe14XXcmd Usage See “Totalize Positive or Negative Edge State Changes” on pageParameters SENSePERiodAPERtureRST Condition .001 sec Send with VXIplug&play Function hpe14XXcmd SENSePERiodLIMitUPPer SENSePERiodAPERture?Parameters Parameters58 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Send with VXIplug&play Function hpe14XXcmdSENSePERiodMODE SENSePERiodLIMitUPPer?RST Condition is “APERture” ParametersSENSePERiodMODE? Related Commands SENSePERiodMODESENSePERiodNPERiods interval mode currently set for period measurementSENSePERiodRANGeUPPer SENSePERiodNPERiods?Send with VXIplug&play Function hpe14XXcmdInt32Q ParametersSENSePERiodRANGeUPPer? SENSeTOTalizeRESetMODERST Condition is Send with VXIplug&play Function hpe14XXcmd ParametersSOURceFMSTATe SENSeTOTalizeRESetMODE?Parameters CommentsSend with VXIplug&play Function hpe14XXcmdInt16Q SOURceFMSTATe?Parameters CommentsParameters SOURceFUNCtionRPULseSOURceFUNCtionSHAPePULSe SOURceFUNCtionSHAPeCONDitionParameters ParametersSOURceFUNCtionSTEPper SOURceFUNCtionSHAPeSQUareComments Send with VXIplug&play Function hpe14XXcmd ParametersFigure 31. Relationship of minvel, and maxvel Table 3. Stepping mode values68 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Parameters SOURcePULMSTATeSend with VXIplug&play Function hpe14XXcmd Send with VXIplug&play Function hpe14XXcmdSOURcePULSePERiod SOURcePULMSTATe?Parameters ParametersSOURcePULSeWIDTh SOURcePULSePERiod?Parameters ParametersSOURceRPULsePOSitionANGLe SOURcePULSeWIDTh?33,554,430 to 33,554,430 ParametersSOURRPULseVARType SOURceRPULsePOSitionANGLe?Usage ParametersSOURceRPULseWIDThANGLe SOURRPULseVARType?Parameters ParametersSOURceRPULseWIDThTIME SOURceRPULseWIDThANGLe?00000787 to ParametersParameters SOURceRPULseWIDThTIME?Usage SOURRPULSEWIDTTIME? @147 76 Agilent E1538A Enhanced Frequency/Totalize/PWM SCPGeneral Specifications SpecificationsOutput Characteristics Input CharacteristicsResolution Hz 1 mSec to 1 Second, resolutionTotalizer Frequency MeasurementPulse Width Measure Rotational Velocity MeasureFrequency Source Pulse SourceRotational Pulse Source Characteristics80 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Extra Tooth Wheel