©
National Instruments Corp.
17
NI 9213E Operating Instructions and Specifications
Common-mode rejection ratio
High-resolution mode (at DC and 50–60 Hz)
Channel-to-COM ................. 100 dB
COM-to-earth ground .......... >170 dB
High-speed mode (at 0–60 Hz)
Channel-to-COM ................. 70 dB
COM-to-earth ground .......... >150 dB
Input bandwidth
High-resolution mode................. 14.4 Hz
High-speed mode........................ 78 Hz
High-resolution noise rejection
(at 50 and 60 Hz) .............................. 60 dB
Overvoltage protection ..................... ±30 V between any
two inputs
Differential input impedance ............ 78 M
Ω
Input current...................................... 50 nA
Input noise
High-resolution mode................. 200 nV
rms
High-speed mode........................ 7
μ
V
rms
