NI 9225 3-CH +/-300V ANALOG INPUT MODULE, CONFORMAL COAT (780159-02)

• Number of channels……………………..3 analog input channels
• ADC resolution……………………………24 bits
• Type of ADC……………………………….Delta-Sigma (with analog prefiltering)
• Sampling mode ……………………………Simultaneous

Internal master timebase (fM)

• Frequency ……………………………..12.8 MHz
• Accuracy……………………………….±100 ppm max

Data rate range (fs) using internal master timebase

• Minimum………………………………1.613 kS/s
• Maximum ……………………………..50 kS/s

Data rate range (fs) using external master timebase

• Minimum………………………………390.625 S/s
• Maximum ……………………………..51.36 kS/s

Operating voltage ranges2

• Minimum………………………………294 Vrms
• Typical………………………………….300 Vrms
• Typical scaling coefficient…………….50.66 μV/LSB
• Overvoltage protection …………………±450 VDC
• Input coupling……………………………..DC
• Input impedance (AI+ to AI-)………..1 MΩ
• Input noise ………………………………….2 mVrms

Stability

• Gain drift ………………………………±10 ppm/°C
• Offset drift …………………………….±970 μV/°C
• Post calibration gain match (ch-to-ch, 20 kHz)………………………..±0.25 dB max

Environmental
National Instruments C Series modules are intended for indoor use only but may be used outdoors if installed in a suitable enclosure. Refer to the manual for the chassis you are using for more information about meeting these specifications.  Operating temperature

• (IEC 60068-2-1, IEC 60068-2-2) …..- 40 to 70 °C
  Storage temperature
• (IEC 60068-2-1, IEC 60068-2-2) …..- 40 to 85 °C