Table Of Contents

Accuracy

Version:
    Last Modified: April 13, 2017

    spd-note-caution
    Caution  

    Electromagnetic interference can adversely affect the measurement accuracy of this product. The coaxial channel inputs of this device (CH 0 to CH 7) are not protected for electromagnetic interference. As a result, this device may experience reduced measurement accuracy or other temporary performance degradation when connected cables are routed in an environment with radiated or conducted radio frequency electromagnetic interference. To limit radiated emissions and to ensure that this device functions within specifications in its operational electromagnetic environment, take precautions when designing, selecting, and installing measurement probes and cables.

    Resolution

    14 bits

    Table 1. DC Accuracy [1]
    Input Range Accuracy Drift
    Typical[2] Warranted[3] Characteristic[4]
    Vpk-pk ±(% of |Reading| + % of FS + mV) ±(% of |Reading| + % of FS + mV) ±(% of |Reading| + % of FS + mV) per °C
    0.2 V ±(0.45 + 0.6 + 0.2) ±(0.90 + 0.65 + 0.7) ±(0.015 + 0.002 + 0.004)
    0.4 V ±(0.45 + 0.24 + 0.2) ±(0.80 + 0.25 + 0.7) ±(0.012 + 0.002 + 0.004)
    1 V ±(0.45 + 0.2 + 0.2) ±(0.80 + 0.25 + 0.7) ±(0.010 + 0.002 + 0.004)
    2 V ±(0.40 + 0.2 + 0.2) ±(0.60 + 0.25 + 0.7) ±(0.005 + 0.002 + 0.004)
    5 V ±(0.40 + 0.2 + 0.2) ±(0.55 + 0.25 + 0.7) ±(0.005 + 0.002 + 0.004)
    AC amplitude accuracy[1]

    Accuracy, typical[2]

    ±0.095 dB at 50 kHz

    Accuracy, warranted[3]

    ±0.15 dB at 50 kHz

    Drift, characteristic[4]

    ±0.0013 dB per °C

    Figure 1. Channel-to-Channel Crosstalk, Characteristic [5]
    • 1 Verification of these specifications requires the DC Adjustment Device Temperature (°C) value. If you are using version 14.0 of the software, visit ni.com/info and enter the Info Code exxpmp for information on how to read this value. Otherwise, use instrument design libraries or NI-SCOPE to read the value.
    • 2 When the reading from the Device Temperature sensor is within ±10 °C of the DC Adjustment Device Temperature (°C) value.
    • 3 When the reading from the Device Temperature sensor is within ±38 °C of the DC Adjustment Device Temperature (°C) value. This increased temperature span encompasses the majority of temperature differences between the last external calibration environment and the operating environment.
    • 4 Used to calculate additional temperature error when the difference between the Device Temperature sensor and the DC Adjustment Device Temperature (°C) value is greater than ±10 °C (for typical specifications) or ±38 °C (for warranted specifications).
    • 5 Measured on one channel with test signal applied to another channel, with the same range setting on both channels.

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