Measurement-computing CIO-DAS16/330 Bedienungsanleitung PDF herunterladen (Seite 23)

5 SPECIFICATIONS

Power consumption

+5V: 900 mA typical, mA max

Analog input section

A/D converter type AD7800

Resolution 12 bits

Number of channels 8 differential or 16 single-ended, switch-selectable

Programmable ranges ±10V, ±5V, ±2.5V, ±1.25V , ±0.625V, 0 to 10V, 0 to 5V, 0 to 2.5V,

0 to 1.25V, 0 to 0.625V, fully programmable

Polarity Unipolar/Bipolar, software-selectable

A/D pacing Programmable: internal counter or external source (DIG. IN 0 / TRIGGER,

rising edge) or software-polled

A/D Trigger sources External hardware/software (DIG. IN 0 / TRIGGER, active high)

A/D Triggering Modes

Digital: Gated pacer, software polled. (Gate must be disabled by software after

trigger event.)

Data transfer From 1024 sample FIFO via REPINSW, interrupt, DMA or software polled

DMA Channel 1 or 3, switch-selectable

A/D conversion time 3 µs

Throughput 330 kHz

Absolute accuracy 0.01% of reading ±1 LSB

Differential Linearity error ±1 LSB

Integral Linearity error ±1 LSB

No missing codes guaranteed 12 bits

Gain drift (A/D specs) ±25 ppm/°C

Zero drift (A/D specs) ±10 ppm/°C

Common Mode Range ±10V

CMRR @ 60 Hz −72dB

Input leakage current (@25 Deg C) 200 nA

Input impedance 10 MegOhms min

Absolute maximum input voltage ±35V

Digital Input / Output

Digital type Input: 74LS367

Output: 74LS197

Configuration Two ports, 4 input bits and 4 output bits

Input low voltage 0.8V max

Input high voltage 2.0V min

Output low voltage (IOL = 8 mA) 0.5V max

Output high voltage (IOH = −0.4 mA) 2.7V min

Absolute maximum input voltage −0.5V, +7V

Interrupts 2 through 7, 10 and 11, programmable

Interrupt enable Programmable

Interrupt sources A/D End-of-conversion, A/D FIFO-half-full, Residual counter, DMA

terminal count

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 33 34

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