User guide

4Introduction
1.3 Specifications
Analog Input
Specification Value
Number of Channels 4 single-ended channels
Input Connector BNC
Input Impedance 50 Ω or 1 MΩ, software selectable, default 50Ω
Input Coupling DC
Input Range (±0.2V, ±1V) or (±1V, ±5V), software selectable
Overvoltage Protection
±5V for (±0.2V, ±1V)
±15V for (±1V, ±5V)
ADC Resolution 16-Bit, 1 in 65536
Crosstalk
≤-80 dB at 1MHz, for all input ranges at 50 Ω input
impedance
Table 1-1: Analog Input Specifications
Offset Error
Model Name
PXI-9816D
PXI-9826D
PXI-9846D
PXI-9846W
PCI-9846D
PXI-9846H,
PCI-9816H
PCI-9826H
PCI-9846H
Offset Error ±0.2 mV ±0.3 mV
Gain Error
Input Range ±0.2 V ±1 V ±1 V ±5 V
Gain Error ±0.1% ±0.05% ±0.1% ±0.06%
Note: When calculating offset error and gain error, sampled data are averaged with 65536 points
and AI channel configured with 50 Ω input impedance.
Table 1-2: Offset and Gain Error