Measurement-computing 6224 Instrukcja Użytkownika Pobierz pdf (Strona 39)

Specifications are subject to change without notice.

9-2 Specifications 6224 User’s Manual

Passband

Frequency ..................... .............................................. ... 0.45 ·

Flatness ........................................................................ 0.1 dB max

Stopband

Frequency ................................................................... 0.55 ·

Attenuation ................................................................. 100 dB

Alias-free bandwidth .......................................................... 0.45 ·

Oversample rate .................................................................. 64 ·

Attenuation at oversample rate

50 kS/s ......................................................................... 90 dB @ 3.2 MHz

10 kS/s ......................................................................... 60 dB @ 640 kHz

Common-mode voltage

All signals to earth ground 60 VDC

Common-mode rejection ratio (CMRR)

Relative to earth ground

............................................. -140 dB @ 0 to 60 Hz

Relative to EX– ........................................................... -85 dB @ 0 to 1 kHz

Input noise

Excitation

Voltage

Density

(nV/V

rms

per )

Total

(50kS/S)(µV/V

rms

)

0 to 1 kHz

(nV/V

rms

)

2.5 V

1.3

250

3.3 V

1.0

190

5.0 V

0.6

130

10.0 V

0.3

Spurious-free dynamic range (SFDR) ................................ 106 dB, (1KHz, –60 dBFS)

Total harmonic distortion (fundamental @ –20 dBFS)

1 kHz ........................................................................... -100 dB

8 kHz .......................................................................... -90 dB

Excitation noise .................................................................. 0.1 mV/V

rms

Crosstalk

1 kHz ........................................................................... -110 dB

10 kHz ........................................................................ -100 dB

Shunt calibration

Resistance .................................................................... 100 k

Resistor accuracy

25°C 110

–40 to 50°C 200

Excitation

Internal voltage ............................................................ 2.5 V, 3.3 V, 5.0 V, 10.0 V

Internal power ............................................................. 450 mW max

External voltage ........................................................... 2 V to 10 V

Rejection by analog pre-filter of signal frequencies at oversample rate.

Measured with a balanced cable. Shielded cables may be significantly unbalanced.

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