Table Of Contents

PXIe-4147 Ranges

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    Last Modified: May 12, 2020

    The measurement range is implicitly selected based on the configured output range. You cannot change the measurement range independently of the output range.

    The selected measurement range is large enough to measure any voltage or current within the configured output range.

    Voltage Ranges

    For voltage output, the PXIe-4147 uses the ranges shown in the following tables.

    Table 1. Voltage Levels
    Channels Voltage Level Range Voltage Level
    0 to 3 1 V -1 V to +1 V
    8 V -8 V to +8 V
    Table 2. Current Limits
    Channels Current Limit Range Current Limit
    0 to 3 1 µA +10 nA to +1 µA
    10 µA +100 nA to +10 µA
    100 µA +1 µA to +100 µA
    1 mA +10 µA to +1 mA
    10 mA +100 µA to +10 mA
    100 mA +1 mA to +100 mA
    3 A +30 mA to +3 A

    Current Ranges

    For current output, the PXIe-4147 uses the ranges shown in the following table.

    Table 3. Current Levels
    Channels Current Level Range Current Level
    0 to 3 1 µA -1 µA to +1 µA
    10 µA -10 µA to +10 µA
    100 µA -100 µA to +100 µA
    1 mA -1 mA to +1 mA
    10 mA -10 mA to +10 mA
    100 mA -100 mA to +100 mA
    3 A -3 A to +3 A
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    Note

    If a range that is not listed in the previous tables is selected, NI-DCPower coerces the range to the next highest range. For example, requesting a 2 mA current limit range on channel 0 of the PXIe-4147 coerces the current limit range to 10 mA.

    Table 4. Voltage Limits
    Channels Voltage Limit Range Voltage Limit
    0 to 3 1 V +10 mV to +1 V
    8 V +80 mV to +8 V

    Overranging

    Enabling overranging extends voltage and current output capabilities from 100% to 105% for all voltage and current ranges except the 8 V range. Overranging is applicable to outputs ranges only and does not apply to measurement ranges. Measurements in any given range may be made up to at least 105% of the range by default without enabling overranging.

    Minimal Glitch Range Changing

    Changing current ranges implies a change in the shunts used to measure current. Under loaded conditions, particularly in constant current mode, this will result in glitches at the output. In order to reduce the risk of damage to the DUT, the range change is designed so that the current may be less than programmed but not more.


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