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Anleitung Zusammenfassung
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. General Specifications Number of channels............................... 1 Resolution.............................................. 14 bits Sample rate range................................... 1 kS/s to 64 MS/s Onboard memory Not using DDC............................... Using DDC (complex data)............ 32 MS 16 MS Input Signal level Nominal.......................................... Full-scale......................................... Max with dither enabled................. Non-operating Max input level........................ Max DC input voltage............. 0 dBm (±0.316 Vp) + 10 dBm (±1.000 Vp) +8 dBm (±0.794 Vp) +20 dBm (±3.16 Vp) ±3.0 V Input impedance..................................... 50 Q nominal Coupling................................................. DC National Instruments™, NI™, and ni.com™ are trademarks of National Instruments Corporation. Product and company October2002 names mentioned herein are trademarks or trade names of their respective companies. For patents covering 323398B-01 National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents. я © 2002 National Instruments Corp. All rights reserved. ~W7 NATION AL ™ INSTRUMENTS' DC offset. ±1 mV (calibrated) Analog bandwidth (-3 dB range)...........0 Hz to 36 MHz Amplitude accuracy................................±0.5 dB VSWR 0-25 MHz........................................<1.5:1 25-32 MHz......................................<3:1 Dither (can be disabled) Frequency range..............................150 Hz to 4 MHz Frequency Internal sample clock Frequency .......... Accuracy............ Phase noise Offset Density 100 Hz <-100 dBc/Hz 1 kHz <-120 dBc/Hz 10 kHz <-130 dBc/Hz 100 kHz <-130 dBc/Hz Residual FM...........................................<2 Hzpk-pk in 10 ms .64 MHz/n, where 1 < n < 216 <±25 ppm NIPXI-5621 Specifications 2 ni.com Amplitude Typical Results -70.00-1------- -80.00-------- -90.00-------- -140.00“, i i i i i ii 0.0 5.0M 10.0M 15.0M 20.0M 25.0M 32.0M Frequency (Hz) Figure 1. Noise Density (Dither Disabled, Input Terminated) Average noise density (dither off)..............................................<-129 dBm/Hz Signal-to-noise ratio 9 dBm signal, full bandwidth..........>62 dB Harmonic distortion (single tone, 0 dBm signal; includes aliased harmonic distortion) 4-15 MHz, dither enabled..............< -77 dBm 0-32 MHz, dither disabled..............< -71 dBm © National Instruments Corporation 3 NI PXI-5621 Specifications E m 33 ai "D a. E < Typical Results 0.00-10.00 --20.00 --30.00 --40.00 --50.00 --60.00 --70.00 --80.00 --90.00 --100.00 -110.0030.5M 30 6M 30.7M 30.8m 30.9m 31.0M 31.1M 31.2m 31.3M 31.4m 31.5m Frequency (Hz) Figure 2. Intermodulation Distortion Intermodulation distortion (2-tone, 0 dBm signals, 200 kHz separation) 4-15 MHz, dither enabled...............< -86 dBm 0-32 MHz, dither disabled..............< -78 dBm Residual responses (input terminated)....< -75 dBm NI PXI-5621 Specifications 4 ni.com Frequency response (4-25 MHz) Relative (to response at 15 MHz)... <±0.25 dB Absolute..........................................<±0.6 dB Absolute (using calibration table)... <±0.5 dB © National Instruments Corporation 5 NI PXI-5621 Specifications Phase Group delay variation (5-25 MHz)............................................9 nspk-pk Group delay variation (0.5-30 MHz).........................................26 nspk-pk DDC Decimation rate.......................................32-4,096 DDC tuning resolution............................0.014901 Hz NI PXI-5621 Specifications 6 ni.com Triggering Modes...................................... Sources.................................... Export...................................... Slope........................................ Pretrigger depth....................... Posttrigger depth..................... Minimum pulse width............. External Trigger (PFI 1) PFI 1 connector....................... Trigger level............................ Max input voltage................... External Frequency Reference Input Connector (REF CLK IN)....... Impedance............................... Input amplitude....................... Max non-operating input level Max DC input voltage............. Frequency range...................... Crosstalk from reference input Calibration Calibration interval ................. Immediate, software, digital PFI 1, PXI<0..7>, PXI STAR PFI 1, PXI<0..7> Rising, falling Up to 32 MS Up to 32 MS 100 ns ...