Measurement-computing USB-1608FS-Plus Manuel d'utilisateur télécharger pdf (Page 17)

Chapter 4

Specifications

All specifications are subject to change without notice.

Typical for 25°C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Analog input

Table 1. General analog input specifications

Parameter

Condition

Specification

A/D converter type

16-bit successive approximation type

Number of channels

8 single-ended

Input configuration

Individual A/D per channel

Sampling method

Simultaneous

Absolute maximum input voltage

CHx IN relative to GND

±15 V max

Input impedance

100 MΩ min

Input ranges

Software-selectable per channel

±10 V, ±5 V, ±2 V, ±1 V

Sampling rate

Hardware paced

0.01 S/s to 100 kS/s, software-selectable

Throughput

Software paced

500 S/s all channels

Hardware paced (Note 1)

(400 kS/s) / (# of channels) max,

100 kS/s max for any channel

BURSTIO ≤ 32,768 total samples

(uses onboard FIFO)

(800 kS/s) / (# of channels) max,

100 kS/s max for any channel

Gain queue

Software configurable. Up to eight

elements – one gain element per unique,

ordered channel.

Resolution

16 bits

No missing codes

16 bits

Crosstalk

Signal DC to 25 kHz

–80 dB

Trigger source

Software-selectable

External digital: TRIG_IN

Note 1: Maximum throughput when scanning in hardware paced mode is machine dependent.

Accuracy

Analog input DC voltage measurement accuracy

Table 2. Calibrated absolute accuracy

Range

Accuracy (mV)

±10 V

5.66

±5 V

2.98

±2 V

1.31

±1 V

0.68

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 23 24

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