Measurement-computing PCM-DAS08 Manuel d'utilisateur télécharger pdf (Page 15)

6 SPECIFICATIONS

Typical for 25

C unless otherwise specified.

POWER CONSUMPTION

+5V (Normal operation): 30 mA typ, 69 mA max

+5V (During CIS read); 59 mA typ, 98 mA max

ANALOG INPUT SECTION

A/D converter type: ADS574

Resolution: 12 bits

Number of channels: 8, single-ended

Input Ranges: ±5V (Set at the factory. Other ranges by

special order)

Polarity Bipolar

A/D Pacing: Programmable: internal 25 kHz

divided by 1, 2, 3 or 4, external source

(DIn 2 / Ext Trig, falling edge) or software

polled

A/D Trigger sources: External polled digital input trigger (DIn

2, active level determined by software)

A/D Triggering Modes:

Digital: Software-polled digital input (software

enables acquisition when appropriate

TTL level is detected).

Data Transfer: Interrupt or software-polled

A/D conversion time 25 µs

Throughput 25 kHz, PC-dependent

Relative Accuracy (software calibrated): ±0.5 LSB

Differential Linearity error (A/D)

±1 LSB

Integral Linearity error (A/D): ±1 LSB

No missing codes guaranteed (A/D): 12 bits

Gain drift (A/D specs): ±45 ppm/°C

Zero drift (A/D specs): ±10 ppm/°C

Input leakage current: ±200 nA over temperature

Input impedance 10 MegOhms min

Absolute maximum input voltage: ±15V

1 2 ... 10 11 12 13 14 15 16 17 18 19 20

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Measurement-computing PCM-DAS08 Manuel d'utilisateur Page 15