National Instruments NI PXI-5621 用户手册

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names mentioned herein are trademarks or trade names of their respective companies. For patents covering 
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on your CD, or ni.com/patents.

The NI PXI-5621 is a DC-coupled 64 MS/s 14-bit high-speed digitizer. 
Except for its DC coupling, the PXI-5621 is functionally identical to the 
PXI-5620. Refer to the NI PXI-562x User Manual for instructions on 
installing and using your NI PXI-5621. 

The NI PXI-5621 specifications are warranted at 0–50

°C ambient unless 

otherwise specified, and include a 10 minute warm-up time from ambient 
conditions. 

Number of channels ............................... 1

Resolution .............................................. 14 bits

Sample rate range................................... 1 kS/s to 64 MS/s

Onboard memory

Not using DDC ............................... 32 MS

Using DDC (complex data) ............ 16 MS

Signal level

Nominal .......................................... 0 dBm (±0.316 V

p

)

Full-scale......................................... +10 dBm (±1.000 V

p

)

Max with dither enabled ................. +8 dBm (±0.794 V

p

)

Non-operating 

Max input level ........................ +20 dBm (±3.16 V

p

)

Max DC input voltage ............. ±3.0 V

Input impedance ..................................... 50 

Ω nominal

Coupling................................................. DC