Measurement Specialties PC-CARD-DAS16/12AO manual Analog output section

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PC-CARD-DAS16/12AO User's GuideSpecifications

Analog output section

 

 

Table 6. Analog output specifications

 

 

 

 

D/A converter type

LTC1446

 

 

Resolution

12 bits

 

 

Number of channels

2

 

 

Configuration

Voltage output, single-ended

Output Range

±10 V, ±5 V. Software selectable. Selected range applies to both channels.

D/A pacing

Software

 

 

Data transfer

Programmed I/O

Throughput

System dependent. Using the Universal Library programmed output function (cbAout) in a

 

loop in Visual Basic, a typical update rate of 5.5 kHz (±200 Hz) can be expected. The rate was

 

measured on a 600MHz Pentium III based PC.

Accuracy

 

 

 

 

 

 

Table 7. Accuracy specifications

 

 

 

 

Absolute accuracy

 

 

±5.0 LSB worst case error

Differential linearity error

 

±0.5 LSB max

 

 

Table 8. Calibrated accuracy components

 

 

 

 

Gain error

 

 

±1.0 LSB max

Offset error

 

 

±1.0 LSB max

Integral linearity error

 

 

±5.0 LSB max

Each PC-CARD-DAS16/12AO is tested at the factory to assure the board’s overall error does not exceed ±5.0 LSB.

Total board error is a combination of gain, offset, integral linearity and differential linearity error. The theoretical worst-case error of the board may be calculated by summing these component errors. Worst case error is realized only in the unlikely event that each of the component errors are at their maximum level, and causing error in the same direction. Although an examination of the chart and a summation of the maximum theoretical errors shows that the board could theoretically exhibit a ±7.5 LSB error, our testing assures this error is never realized in a board that we ship.

Monotonicity

Guaranteed monotonic over temperature

Analog output full-scale gain drift

±0.60 LSB/°C max

Analog output zero drift

±0.07 LSB/°C max

Overall analog output drift

±0.67 LSB/°C max

Slew rate

± 0.5 V/µs min

Current drive

±2 mA min

Output short-circuit duration

Indefinite @ 12 mA

Output coupling

DC

Output impedance

0.1 ohms max

Miscellaneous

Double buffered output latches

 

Coding: Inverted Offset Binary:

 

0 code = +FS, 4095 code = -FS

 

Output voltage on power up and reset: +10 V (+FS)

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Contents Page PC-CARD-DAS16/12AO Management committed to your satisfaction Trademark and Copyright Information Table of Contents PC-CARD-DAS16/12AO Users Guide What you will learn from this users guide Where to find more informationAbout this Users Guide Conventions in this users guideIntroducing the PC-CARD-DAS16/12AO Overview PC-CARD-DAS16/12AO featuresPC-CARD-DAS16/12AO block diagram ChapterSoftware features Hardware Installing the PC-CARD-DAS16/12AOWhat comes with your PC-CARD-DAS16/12AO shipment? Additional documentation Optional componentsUnpacking the PC-CARD-DAS16/12AO Installing the software Installing the PC-CARD-DAS16/12AOIf your Pcmcia card is not detected Pin out I/O connector Connecting the board for I/O operationsConnectors, cables I/O connector Board connector, cables, and accessory equipmentCabling CPCC-50M-4 Field wiring and signal termination Calibrating the PC-CARD-DAS16/12AOProgramming languages Packaged applications programs Programming and Developing ApplicationsRegister-level programming Conversion speed and amplification Functional DetailsAnalog input ranges Triggering and transfer Pacer clockCounter/pacer logic diagram Absolute accuracy specifications SpecificationsAnalog input specifications Analog inputCrosstalk Channel to channel crosstalk specificationsNoise performance specifications Noise performanceDifferential linearity error ±0.5 LSB max Analog output sectionInterrupt Digital input/outputCounter Miscellaneous Power consumptionConnector and pin out EnvironmentalDifferential analog input mode pin out Single-ended analog input mode pin outDeclaration of Conformity USAMailinfo@mccdaq.com