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HP E1431A VXI 8-Channel 25.6 kHz Digitizer![]()
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Data transfers to other VXI modules is over the VXI Local Bus. Use it with the HP E1562A/B Data Disk to attain transient captures with aggregate sample rates up to 2.62 MSa/s. That's 40 channels at 25.6 kHz bandwidth, or 80 channels at 12.8 kHz. Or use it with the HP E1485A/B signal processor module to create custom high-speed digital signal processing applications.
Note: Configuration software that allows you to easily select compatible interfaces, controller platforms, and VXI test system components is available on CD ROM. Order the "Test System and VXI Products Catalog and CD ROM" from the Test & Measurement Catalogs available at this web site.
Frequency
Input frequency range: dc to 25.6 kHz Frequency spans: 25.6 kHz to 0.39 Hz (2x steps) Internal sample rate: 65,536 Hz to 1 Hz (2x steps) External sample rate: <=65,536 Hz Block sizes: 1 to 16,384 samples Word sizes: 16- or 32-bit word transfers
Input
Full scale input ranges: 5 mVpk to 10 Vpk (1, 2, 5) Input impedance (DC coupled): Differential: 2 M ohms nominal High side to chassis: 1 M ohms, 35 pF nominal Low to chassis (floating): 1 M ohms, 0.01 µF nominal Low to chassis (grounded): <90 ohms typical AC coupling 3 dB frequency: <1 Hz Common mode rejection ratio:
Frequency DC Coupled AC Coupled <67 Hz 65 dB - 67 Hz to 1000 Hz 55 dB - 45 Hz to 1000 Hz - 45 dB
Amplitude over-range detection: Common mode overload: ±12.5 Vpk Differential mode overload: +3 dBfs nominal (at 100 kHz) ADC overload: +3 dBfs (nominal) Residual DC after auto-zero: <=1% of Full Scale, or <=1 mVdc
Amplitude
Amplitude accuracy at 1 kHz: ±1% (±0.086dB) ±0.035% of FS Flatness relative to 1 kHz: ±0.5% (±0.043 dB)
Cross Channel Matching
(in the same mainframe) Cross channel magnitude: ±3% (±0.26 dB) Cross channel phase match:
Frequency Span Phase 25.6 kHz span ±1.0º 12.8 kHz span ±0.5º 1 kHz ±0.1º
Cross channel delay match:
Frequency Span Delay 25.6 kHz span ±200 ns 12.8 kHz span ±100 ns <1 kHz ±100 ns
Cross-mainframe time delay: 70 ns delay typical plus 6 ns per meter of cable
Dynamic Range
Resolution: 16 bits FFT noise floor: <=-90 dB Note: Hanning window, 800 lines, 16 RMS averages Spurious-free dynamic range: >80 dB Channel to channel crosstalk: <-125 dB Input noise level (>=100 Hz): <40 nV rms/squareroot of Hz
Trigger
Trigger modes: Input Channel (Same HP E1431A), Input Channel (Other HP E1431A) Maximum trigger delay: Pre trigger: 16,383 sample periods Post trigger: >1 million sample periods
Transducer Constant Current Source
Current source accuracy: 4.5 mA, ±0.5 mA Open circuit voltage: +24 Vdc Harmonic distortion: <-80 dBfs Intermodulation distortion: <-75 dBfs Backplane Connector Shielding To ensure compliance with RFI levels specified in standards EN55001 and CISPR11, this product requires the backplane connector shields installed in an HP VXI C-size mainframe. Option 918 is available with the purchase of a new mainframe; accessories, HP P/Ns E1400-80920 and E1421-80920 (one kit permainframe), are available for retrofitting existing HP mainframes HP E1401A/B and HP E1421A, respectively.
HP E1431A VXI 8-Channel 25.6 kHz Digitizer Opt 0B0 Delete manual set Opt 0B1 Add manual set Opt 1BP Mil std 45662A calibration w/ test data Opt UK6 Commercial cal. certificate w/ test data Opt W01 Convert 3 year return to HP to 1 year onsite warrranty Opt W32 3 year customer return calibration service Opt W34 3 year customer return standards compliant calibration service Opt W50 5 year customer return repair service Opt W52 5 year customer return calibration service Opt W54 5 year customer return standards compliant calibration service E1400-80920 Shield, backplane connector E1421-80920 Shield, backplane connector kit
Trademarks:
Windows is a U.S. registered trademark of Microsoft Corp.
HP E1431A Technical Specifications
( PDF)
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Page Updated: Thursday February 18 05:19:21 UTC 1999