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Hersteller: Generac Power Systems Dateigröße: 190.79 kb Dateiname: 371477d.pdf Unterrichtssprache:

• Interpolation set to maximum allowed factor for a given sample rate. • Signals terminated with 50 .. • Direct Path set to 1 Vpk-pk, Low-Gain Amplifier Path set to 2 Vpk-pk, and High-Gain Amplifier Path set to 12 Vpk-pk. • Sample clock set to 100 MS/s. Typical values are representative of an average unit operating at room temperature. Specifications are subject to change without notice. For the most recent NI 5421 specifications, visit ni.com/manuals. To access all the NI 5421 documentation, including the NI Signal Generators Getting Started Guide, which contains functional descriptions of the NI 5421 signals, navigate to Start»Programs»National Instruments»NI-FGEN»Documentation. Hot Surface If the NI 5421 has been in use, it may exceed safe handling temperatures and cause burns. Allow the NI 5421 to cool before removing it from the chassis. Contents CH 0 ........................................................................................................ 2 Sample Clock .......................................................................................... 14 Onboard Clock ........................................................................................ 17 Phase-Locked Loop (PLL) Reference Clock .......................................... 18 CLK IN ................................................................................................... 19 PFI 0 and PFI 1 ....................................................................................... 20 DIGITAL DATA & CONTROL (DDC) ................................................ 22 Start Trigger ............................................................................................ 24 Markers ................................................................................................... 26 Waveform and Instruction Memory Utilization...................................... 27 Calibration............................................................................................... 29 Power ...................................................................................................... 29 Software .................................................................................................. 30 Environment............................................................................................ 31 Safety, Electromagnetic Compatibility, and CE Compliance.................33 Physical ................................................................................................... 34 Where to Go for Support......................................................................... 36 CH 0 CH 0 Table 1. Specification Value Comments Number of Channels 1 — Connector SMB (jack) — Output Voltage Characteristics Output Paths 1. The software-selectable Main Output Path setting provides full-scale voltages from 12.00 Vpk-pk to 5.64 mVpk-pk into a 50 . load. NI-FGEN uses either the Low-Gain Amplifier or the High-Gain Amplifier when the Main Output Path is selected, depending on the Gain attribute. 2. The software-selectable Direct Path is optimized for IF applications and provides full-scale voltages from 1.000 Vpk-pk to 0.707 Vpk-pk. — DAC Resolution 16 bits — NI 5421 Specifications 2 ni.com Table 1. (Continued) Table 1. (Continued) Value Comments Amplitude and Offset Amplitude Range Path Load Amplitude (Vpk-pk) 1. Amplitude values assume the full scale of the DAC is utilized. If an amplitude smaller than the minimum value is desired, then waveforms less than full scale of the DAC can be used. 2. NI-FGEN compensates for user- specified resistive loads. Minimum Value Maximum Value Direct 50 . 0.707 1.00 1 k. 1.35 1.91 Open 1.41 2.00 Low- Gain Amplifier 50 . 0.00564 2.00 1 k. 0.0107 3.81 Open 0.0113 4.00 High- Gain Amplifier 50 . 0.0338 12.0 1 k. 0.0644 22.9 Open 0.0676 24.0 Amplitude Resolution 3 digits — Offset Range Span of ±25% of Amplitude Range with increments <0.0014% of Amplitude Range. Not available on the Direct Path. © National Instruments Corporation 3 NI 5421 Specifications Table 1. (Continued) Table 1. (Continued) Value Comments Maximum Output Voltage Maximum Output Voltage Path Load Maximum Output Voltage (Vpk-pk) The Maximum Output Voltage of the NI 5421 is determined by the Amplitude Range and the Offset Range. Direct 50 . ±0.500 1 k. ±0.953 Open ±1.000 Low- Gain Amplifier 50 . ±1.000 1 k. ±1.905 Open ±2.000 High- Gain Amplifier 50 . ±6.000 1 k. ±11.43 Open ±12.00 Accuracy DC Accuracy For the Low-Gain or High-Gain Amplifier Path: ±0.2% of Amplitude ± 0.05% of Offset ±500 .V (within ±10 °C of self-calibration temperature) ±0.4% of Amplitude ± 0.05% of Offset ±1 mV (0 °C to 55 °C) All paths are calibrated for amplitude and gain errors. The Low-Gain and High-Gain Amplifier Paths also are calibrated for offset errors. Specifications valid only for high impedance. For the Direct Path: Gain Accuracy: ±0.2% (within ±10 °C of self-calibration temperature) Gain Accuracy: ±0.4% (0 °C to 55 °C) DC Offset Error: ±30 mV (0 °C to 55 °C) ...

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