Measurement-computing USB-2020 Manuel d'utilisateur télécharger pdf (Page 18)

Chapter 4

Specifications

All specifications are subject to change without notice.

Typical at 25 °C unless otherwise specified

Specifications in italic text are guaranteed by design.

Analog input

Table 1. Analog input specifications

Parameter Condition Specification

A/D converter type

AD9225

Number of channels

Resolution

12-bits

Input configuration Single-ended, individual A/D per channel

Sampling method

Simultaneous

Input ranges

±10 V, ±5 V, ±2 V, ±1 V, software-selectable

Connection type

BNC

Input coupling

Absolute maximum input

voltage

±15 V max (power on)

Input impedance

1.5 MΩ typ

Input leakage current

2 uA typ, 10 uA max

Input bandwidth (3 db)

All input ranges

17 MHz typ

Crosstalk DC to 10 kHz –90 dB

Trigger source

Digital

TRIG IN (BNC connector and 40-pin connector)

See External trigger for more information

Analog

CH0 or CH1

Sample clock source

Internal

1 kHz to 20 MHz max

External

CLK IO (BNC connector)

See External clock input/output for more information

Throughput

Software paced

33 S/s to 4 kS/s typ; system-dependent

Continuous scan 1 kS/s to 8 MS/s, system-dependent

BURSTIO

1 kS/s to 20 MS/s to 64 MS onboard memory

Data transfer rate

From onboard memory

10 MS/s typ

Signal-to-noise ratio(SNR)

66.6 dB

Signal-to-noise and distortion

ratio (SINAD)

66.5 dB

Spurious free dynamic range

(SFDR)

80 dB

Total harmonic distortion

(THD)

80 dB

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

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Measurement-computing USB-2020 Manuel d'utilisateur Page 18

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