Measurement Computing 6224 - Manual (Page 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 1
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 2 ............................................. -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 8 1.3 250
3.3 V 6 1.0 190
5.0 V 4 0.6 130
10.0 V 2 0.3 65
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.