VXI VT1538A user manual General Specifications

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Specifications

These specifications for the E1538A reflect its performance while installed on your VXI module.

General Specifications

Output Characteristics

Characteristic

Pull-Up Off

Pull-Up On (10K to Vcc)

 

 

 

 

 

current source (logic 1)

0

.38mA @ 1.2V

 

current sink (logic 0)

100 mA

100 mA

 

Voltage (logic 1)

0

5V (no load)

 

Voltage (logic 0)

0.5 Max sinking 100mA

0.5 Max sinking 100mA

 

 

0.1 Max sinking 20mA

0.1 Max sinking 20mA

 

 

 

 

Input Characteristics

Characteristic

Pull-Up Off

Pull-Up On (10K to Vcc)

 

 

 

 

(VRS OFF for Chs0&1)

Equivalent circuit

120K conn. to 0 Volts

9.2KΩ conn. to 4.6 Volts

 

 

 

 

Maximum input low

programmable from

programmable from

 

Minimum input high

-46 to 46 Volts (±0.5V)

-46 to 46 Volts (±0.5V)

 

 

 

 

 

 

 

Input Isolation

No Isolation Provided

Cross-Talk Between Channels

A large signal on one channel has an effect on the accuracy of frequency measured on other channels as follows:

Sine-wave interfering signal up to 70Vpp

No degradation of specification

 

 

Square-wave Interfering signal <63Vpp

No degradation of specification

 

 

Square-wave Interfering signal >63Vpp to

Minimum input amplitude changes from 15mV

70Vpp

to 18mV for frequency range of 1Hz to 10Khz

 

(see Input Signal Characteristics spec.)

 

 

Maximum voltage applied to any

-48 Volts to 48 Volts

input terminal

 

Maximum voltage applied to any output terminal

0 - 48 Volts (outputs are diode clamped at -0.3V)

Agilent E1538A Enhanced Frequency/Totalize/PWM SCP 77

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Contents VT1538A VXI Technology, Inc Introduction Support Resources User’s and Scpi Programming Manual Page About this Manual Agilent E1538A Enhanced Frequency/Totalize/PWM SCPIntroduction Identifying the Plug-on Important Switch Location and Example Settings Setting Configuration SwitchesConnecting To The Terminal Module InstallationE1419A Option 11 Terminal Module Connections Recommended Signal ConnectionsRecommended Connections and Voltage Limits Input and Output CharacteristicsE1538A Input/Output Characteristics VRS Mode Input Operation SCP Channels 0 & 1 onlyShows the VRS mode input characteristics Programming With Scpi CommandsSetting the Input Threshold Level Configuring I/O DirectionInppol Norm Determining the Input Threshold LevelTo set channels 40 through 43 to input digital states Reading Static Digital StateInit SENSDATACVT? @44 Totalize Positive or Negative Edge State ChangesAbout Period Frequency Measurements SENSDATACVT? @45 SENSDATACVT? @45 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Sensfuncquad 0,@148,149 Sense Quadrature PositionRPS Sense Rotational Velocity Example of Rotational Velocity SenseOutput Static Digital State Controlling Output PolarityVariable Width Pulse Per Trigger Variable Width Pulse Train PWM Variable Frequency Fixed Width Pulse Train FM Variable Frequency Square-Wave Pulse Train Rotationally Positioned Pulse Output Rotational Pulse Command Usage Algupdate Init RST Sensfuncrvel 12,MISS,@140 Example of variable position, preset widthVariable Position, Width Preset by Time Example of variable width by angle, preset position Fixed Position, Variable Width by Angle Example of variable width by time, preset positionALGSCALAR’ALG1’,’Width2’,.010 Stepping mode values Stepper Motor Control Use the commandSensfuncvolt @100 Full Step Mode, Full and Half Speed, 4-Channel Page RST and *TST important Command Syntax For newer Units only Scpi Command ReferenceCommand Syntax For newer Units only Discussed INPutPOLarity? INPutPOLarityParameters CommentsLevel can be set to a resolution INPutTHResholdLEVelINPutTHResholdLEVel? OUTPutPOLarity OUTPutPOLarity?Send with VXIplug&play Function hpe14XXcmdReal64Q SENSeFREQuencyAPERture Related Commands Sensfreqaper SENSeFREQuencyAPERture?SENSeFREQuencyLIMitLOWer Init Related Commands INPutPOLarity SENSeFREQuencyLIMitLOWer?SENSeFUNCtionCONDition SENSeFUNCtionPERiod SENSeFUNCtionFREQuencySENSeFUNCtionQUADrature SENSeFUNCtionPWIDthSENSeFUNCtionRVELocity RPS SENSeFUNCtionTOTalize SENSePERiodAPERture SENSePERiodLIMitUPPer SENSePERiodAPERture?Init SENSePERiodMODE SENSePERiodLIMitUPPer?Related Commands SENSePERiodMODE SENSePERiodMODE?SENSePERiodNPERiods SENSePERiodNPERiods? SENSePERiodRANGeUPPerSend with VXIplug&play Function hpe14XXcmdInt32Q SENSeTOTalizeRESetMODE SENSePERiodRANGeUPPer?RST Condition is Send with VXIplug&play Function hpe14XXcmd SOURceFMSTATe SENSeTOTalizeRESetMODE?Send with VXIplug&play Function hpe14XXcmdInt16Q SOURceFMSTATe?SOURceFUNCtionRPULse SOURceFUNCtionSHAPePULSe SOURceFUNCtionSHAPeCONDitionSOURceFUNCtionSHAPeSQUare SOURceFUNCtionSTEPperComments Send with VXIplug&play Function hpe14XXcmd Relationship of minvel, and maxvel Usage See Stepper Motor Control on SOURcePULMSTATeSOURcePULSePERiod SOURcePULMSTATe?SOURcePULSeWIDTh SOURcePULSePERiod?SOURcePULSeWIDTh? SOURceRPULsePOSitionANGLe33,554,430 to 33,554,430 SOURceRPULsePOSitionANGLe? SOURRPULseVARTypeUsage SOURceRPULseWIDThANGLe SOURRPULseVARType?SOURceRPULseWIDThANGLe? SOURceRPULseWIDThTIME00000787 to SOURceRPULseWIDThTIME? General Specifications SpecificationsFrequency Measurement Pulse Width Measure Rotational Pulse Source