Advantech PCIE-1802, User Manual

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PCIE-1802 User Manual 26
A.4 Flatness
* Relative to 1 kHz.
A.5 DC Coupled Measurement Accuracy
 Gain error:
– Operating temperature within 5 °C of last auto-calibration temperature: <
±0.2%
– Over full operating temperature range: < ±0.4%
 Offset error:
– Operating temperature within 5 °C of last auto-calibration temperature:
< 0.5 mV
– Over full operating temperature range: < 1 mV
A.6 Amplifier Characteristics
A.6.1 Input Impedance
A.6.2 Common-Mode Rejection Ratio (CMRR)
 Input frequency < 20 kHz: 80 dB
A.7 Dynamic Characteristics
A.7.1 Bandwidth
*fs: Sample frequency
For example, the -3 dB bandwidth of 10 kS/s sample frequency is 0.4805 × 10 kHz =
4.805 kHz.
Frequency Band
fs ≥ 54 kS/s
20 Hz ≤ fin ≤ 20 kHz
fs ≥ 108 kS/s
20 kHz < fin ≤ 45 kHz
fs ≥ 216 kS/s
45 kHz < fin ≤ 92.2 kHz
Flatness* (dB) ±0.004 ±0.006 ±0.008
Input Configuration
Between Positive Terminal (+)
and Chassis Ground Between Negative Terminal (-)
and Chassis Ground
Differential 1 M Ω 1 M Ω
Pseudo-differential 1 M Ω 50 Ω
Sample Rate fs < 25.6 kS/s fs ≥ 25.6 kS/s
Alias rejection > 90 dB > 90 dB
-3 dB bandwidth 0.4805 × fs 0.4852 × fs