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VXI VT1538A user manual User’s and SCPI Programming Manual, Signal Conditioning Plug-on

Models: VT1538A

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Agilent 75000 Series C

Agilent Technologies E1538A

Enhanced Frequency/Totalize/PWM

Signal Conditioning Plug-on

User’s and SCPI Programming Manual

Where to Find it - Online and Printed Information:

System installation (hardware/software)	VXIbus Configuration Guide*
	Agilent VIC (VXI installation software)*
Module configuration and wiring	This Manual
SCPI programming	This Manual
VXIplug&play programming	VXIplug&play Online Help
VXIplug&play example programs	VXIplug&play Online Help
VXIplug&play function reference	VXIplug&play Online Help

Soft Front Panel information	VXIplug&play Online Help
VISA language information	Agilent VISA User’s Guide
Agilent VEE programming information	Agilent VEE User’s Manual

*Supplied with Agilent Command Modules , Embedded Controllers, and VXLink.

Manual Part Number: E1538-90004

Printed in U.S.A. E0600

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VXI VT1538A user manual User’s and SCPI Programming Manual, Agilent Technologies E1538A Enhanced Frequency/Totalize/PWM

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 Static DAC Products INTRODUCTIONDynamic 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 Channel Pull-up Resistor Setting Configuration SwitchesConfiguring Input- Output direction Connecting To The Terminal Module Installation8 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Recommended Signal ConnectionsFigure 4. E1419A Option 11 Terminal Module Connections 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 Output Static Digital State Programming Output ChannelsControlling Output Polarity Variable Width Pulse Per Trigger 26 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Variable Width Pulse Train PWMFigure 17. Output Pulse-Width-Modulated Signal Variable Frequency Fixed Width Pulse Train FM 28 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Variable Frequency Square-Wave Pulse Train FMFigure 19. Output Square Wave Variable Frequency FM 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 positionRotational Pulse Mode Variable Pulse Width by time, Preset Angular PositionExample of variable width by time, preset position 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 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Figure 27. Full Step Mode, Full and Half Speed, 4-ChannelFigure 28. Half Step Mode, Full Speed, 4-Channel 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 pageRST Condition .001 sec Send with VXIplug&play Function hpe14XXcmd SENSePERiodAPERtureParameters 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 Parameters68 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Table 3. Stepping mode valuesFigure 31. Relationship of minvel, and maxvel 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