PXIe-4151 Specifications

Definitions

Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.

Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

  • Typical specifications describe the performance met by a majority of models.
  • Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.

Specifications are Warranted unless otherwise noted.

Conditions

Specifications are valid under the following conditions unless otherwise noted.

  • Ambient temperature[1]1 The ambient temperature of a PXI system is defined as the temperature at the chassis fan inlet (air intake). of 23 °C ± 5 ºC.
  • Chassis with ≥38 W slot cooling capacity.[2]2 For increased capability, NI recommends installing the PXIe-4151 in a chassis with slot cooling capacity ≥58 W.
    • For chassis with slot cooling capacity = 38 W, fan speed set to HIGH
  • Calibration interval of 2 years.
  • Warm-up time of 30 minutes.
  • Self-calibration performed within the last 24 hours.
  • NI-DCPower Aperture Time is set to 1 power-line cycle (PLC).

Instrument Capabilities

DC voltage ranges

6 V, 20 V

DC current ranges

100 mA, 1 A, 25 A

Note Maximum current allowed in the 25 A range is dependent on ambient temperature and chassis cooling capacity. Refer to the following figures for additional detail.
Figure 1. PXIe-4151 Quadrant Diagram, Tambient = 0 °C to 40 °C

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Figure 2. PXIe-4151 Quadrant Diagram, Tambient >40 °C

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Available DC output power[3]3 Power limit defined by voltage measured between HI and LO terminals.

300 W

Note An auxiliary power source with sufficient capacity is required for operation. Refer to Power Requirements for additional details.

Voltage

Table 1. Voltage Programming and Measurement Accuracy/Resolution
Range Resolution (Noise Limited) Noise (0.1 Hz to 10 Hz, peak-to-peak, typical) Accuracy ± (% of Voltage + Offset)[4]4 Refer to the Remote Sense and Load Regulation sections for additional accuracy derating and conditions. Tempco[5]5 Temperature coefficient applies beyond 23 °C ± 5 °C ambient within ± 5 °C of Tcal. ± (% of Voltage + Offset)/°C
Tambient 23 °C ± 5 °C, Tcal[6]6 Tcal is the internal device temperature recorded by the PXIe-4151 at the completion of the last self-calibration. ± 5 °C Tambient 0 °C to 55 °C, Tcal ± 5 °C
6 V 1 μV 10 μV 0.022% + 500 μV 0.001% + 25 μV
20 V 10 μV 40 μV 0.024% + 2 mV 0.001% + 65 μV

Current

Table 2. Current Programming and Measurement Accuracy/Resolution
Range Resolution (Noise Limited) Noise (0.1 Hz to 10 Hz, peak-to-peak, typical) Accuracy ± (% of Current + Offset)[7]7 Refer to the Remote Sense and Load Regulation sections for additional accuracy derating and conditions. Tempco[8]8 Temperature coefficient applies beyond 23 °C ± 5 °C ambient within ± 5 °C of Tcal. ± (% of Current + Offset)/°C
Tambient 23 °C ± 5 °C, Tcal[9]9 Tcal is the internal device temperature recorded by the PXIe-4151 at the completion of the last self-calibration. ± 5 °C Tambient 0 °C to 55 °C, Tcal ± 5 °C
100 mA 10 nA 200 nA 0.03% + 30 μA 0.0015% + 1.5 μA
1 A 100 nA 2 μA 0.03% + 300 μA 0.0015% + 15 μA
25 A 10 μA 160 μA 0.065% + 2 mA 0.0035% + 375 μA

Noise

Wideband source noise[10]10 10 Hz to 20 MHZ bandwidth, measured with 1 µF load capacitance at the end of 1 m shielded cable. PXIe-4151 configured for normal transient response.

<20 mV peak-to-peak, typical

The following figures illustrate measurement noise as a function of measurement aperture time for the PXIe-4151.

Figure 3. Voltage RMS Noise Versus Aperture Time, Nominal

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Figure 4. Current RMS Noise Versus Aperture Time, Nominal

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Note When the aperture time is set to two power-line cycles (PLCs), measurement noise differs slightly depending on whether the Power Line Frequency property is set to 50 Hz or 60 Hz.
Note Use the DC Noise Rejection property to configure normal or second-order DC noise rejection.

Settling Time and Transient Response

Note Settling time is measured as the time to settle to within 0.1% of step amplitude, PXIe-4151 configured for fast transient response.
Settling Time

Voltage mode, ≤18 V step, unloaded

<4.2 ms, typical

Current mode, full-scale step, 25 A range

<600 μs, typical

Current mode, full-scale step, 1 A range

<320 μs, typical

Current mode, full-scale step, 100 mA range

<1.2 ms, typical

Note Settling time specifications for voltage mode derived with current limit set to ≥20% of the selected current limit range.
Note Settling time specifications for current mode (all ranges) derived with voltage limit set to ≥2 V, resistive load set to 1 V/selected current range.
Transient Response

25 A range

<250 μs, typical to recover within ±300 mV

1 A range

<50 μs, typical to recover within ±10 mV

Note Transient response is the time to recover within the stated recovery band after a load current change from 50% to 100% of range, PXIe-4151 configured for fast transient response.

Remote Sense

Voltage accuracy

Add 10 µV per volt of lead drop per ohm of corresponding sense lead resistance to voltage accuracy specifications.

Maximum sense lead resistance

100 Ω

Maximum lead drop per lead

1 V, maximum 20 V between HI and LO terminals

Load Regulation

Voltage, local sense[11]11 Measured between HI and LO terminals at the module output connector.

5 μV/mA (5 mΩ), nominal; 11 μV/mA (11 mΩ), maximum

Voltage, remote sense

Error included in accuracy specifications.

Current

Error included in accuracy specifications.

Auxiliary Power Input Line Regulation

Note Auxiliary power input line regulation is the impact to voltage and current accuracy specifications as a result of change in voltage at the auxiliary power input.

Voltage

Error included in accuracy specifications.

Current

Error included in accuracy specifications.

Isolation

Isolation voltage, any channel I/O pin[12]12 Channel I/O pins include the HI, LO, HI Sense and LO Sense terminals. The Shield GND terminals of the output connector are connected to chassis ground and not considered channel I/O pins. to earth ground

150 V DC, CAT I

Transient overvoltage

800 V peak

Caution Isolation voltage ratings apply to the voltage measured between any channel pin (HI, LO, HI Sense, LO Sense) and the chassis ground. When operating channels in series or floating on top of external voltage references, ensure that no terminal exceeds this rating.
Caution Les tensions nominales d'isolation s'appliquent à la tension mesurée entre n'importe quelle broche de voie et la masse du châssis. Lors de l'utilisation de voies en série ou flottantes en plus des références de tension externes, assurez-vous qu'aucun terminal ne dépasse cette valeur nominale.
Note Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are for other circuits not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV.

Protection

Absolute maximum voltage

Between any channel I/O pin[13]13 Channel I/O pins include the HI, LO, HI Sense and LO Sense terminals. The Shield GND terminals of the output connector are connected to chassis ground and not considered channel I/O pins. and LO

60 V

Any AUX I/O pin to ground

5 V

AUX Power In + to AUX Power In –

±60 V

AUX Power In – to ground

±1 V

Output channel protection

Overcurrent or overvoltage

Automatic shutdown, output disconnect relay opens

Reverse voltage protection

Automatic shutdown, output disconnect relay opens

Down programmer overload

Automatic shutdown, output disconnect relay opens

Overtemperature

Automatic shutdown, output disconnect relay opens

AUX Power protection

Overvoltage or undervoltage

Automatic shutdown, output disconnect relay opens

Overcurrent

Automatic shutdown, output disconnect relay opens, non-accessible fuse as backup protection

Measurement and Update Timing

Available sample rates[14]14 When sourcing while measuring, both the Source Delay and Aperture Time affect the sampling rate. When taking a measure record, only the Aperture Time affects the sampling rate.

(1.8 MS/s)/N, nominal

where

  • S is samples
  • N = 1, 2, 3, … 224

Sample rate accuracy

Equal to PXIe_CLK100 accuracy, nominal

Maximum measure rate to host

1.8 MS/s per channel, continuous, nominal

Maximum source update rate[15]15 As the Source Delay is adjusted, or if advanced sequencing is used, maximum update rates vary.

100,000 updates/s, nominal

Input trigger to

Source event delay

10 μs, nominal

Source event jitter

2 μs peak-to-peak, nominal

Measure event jitter

2 μs peak-to-peak, nominal

Triggers

Input Triggers

Types

Start, Source, Sequence Advance, Measure

Sources (PXI trigger lines <0...7>[16]16 Pulse widths and logic levels are compliant with PXI Express Hardware Specification Revision 1.0 ECN 1.

Polarity

Active high (not configurable)

Minimum pulse width

100 ns

Destinations[17]17 Input triggers can come from any source (PXI trigger or software trigger) and be exported to any PXI trigger line. This allows for easier multi-board synchronization regardless of the trigger source. (PXI trigger lines <0...7>)[18]18 As the Source Delay is adjusted, or if advanced sequencing is used, maximum update rates vary.

Polarity

Active high (not configurable)

Pulse width

>200 ns

Output Triggers (Events)

Types

Source Complete, Sequence Iteration Complete, Sequence Engine Done, Measure Complete

Destinations (PXI trigger lines <0...7>)[19]19 As the Source Delay is adjusted, or if advanced sequencing is used, maximum update rates vary.

Polarity

Active high (not configurable)

Pulse width

>230 ns

Physical

Dimensions

3U, two-slot, PXI Express/CompactPCI Express module

4.0 cm × 13.0 cm × 21.6 cm (1.6 in. × 5.1 in. × 8.5 in.)

Weight

650 g (22.9 oz)

Front Panel Connectors

Output

OMNIMATE Hybrid, 7.62 mm (4 position), 2.54 mm (6 position)

AUX I/O

MICRO COMBICON - DFMC 0, 5, 2.54 mm (8 position)

AUX Power In

MEGA-FIT RECEPTACLE, 5.7 mm, (4 position)

Calibration Interval

Recommended calibration interval

2 years

Power Requirements

PXIe chassis, +3.3 V

1 A, maximum

PXIe chassis, +12 V

1 A, maximum

Auxiliary power source input

45.6 V DC to 50.4 VDC, 9 A maximum

Note Current drawn from the auxiliary power source depends on power delivered from the instrument to the load. Refer to the PXIe-4151 user manual for additional details on power budgeting when multiple modules are powered from a single auxiliary power source.

Environmental Characteristics

Temperature

Operating

0 °C to 55 °C[20]20 Not all chassis can achieve this ambient temperature range. Refer to PXI chassis specifications to determine the ambient temperature ranges your chassis can achieve.,[21]21 Maximum ambient temperature deratings apply when operating the 25 A range above certain current levels. Refer to the Instrument Capabilities section for additional details.

Storage

-40 °C to 71 °C

Humidity

Operating

10% RH to 90% RH, noncondensing

Storage

5% RH to 95% RH, noncondensing

Pollution Degree

2

Maximum Altitude

2000 m

Shock and Vibration

Operating Vibration

5 Hz to 500 Hz, 0.3 g RMS

Non-Operating Vibration

5 Hz to 500 Hz, 2.4 g RMS

Operating Shock

30 g, half-sine, 11 ms pulse

1 The ambient temperature of a PXI system is defined as the temperature at the chassis fan inlet (air intake).

2 For increased capability, NI recommends installing the PXIe-4151 in a chassis with slot cooling capacity ≥58 W.

3 Power limit defined by voltage measured between HI and LO terminals.

4 Refer to the Remote Sense and Load Regulation sections for additional accuracy derating and conditions.

5 Temperature coefficient applies beyond 23 °C ± 5 °C ambient within ± 5 °C of Tcal.

6 Tcal is the internal device temperature recorded by the PXIe-4151 at the completion of the last self-calibration.

7 Refer to the Remote Sense and Load Regulation sections for additional accuracy derating and conditions.

8 Temperature coefficient applies beyond 23 °C ± 5 °C ambient within ± 5 °C of Tcal.

9 Tcal is the internal device temperature recorded by the PXIe-4151 at the completion of the last self-calibration.

10 10 Hz to 20 MHZ bandwidth, measured with 1 µF load capacitance at the end of 1 m shielded cable. PXIe-4151 configured for normal transient response.

11 Measured between HI and LO terminals at the module output connector.

12 Channel I/O pins include the HI, LO, HI Sense and LO Sense terminals. The Shield GND terminals of the output connector are connected to chassis ground and not considered channel I/O pins.

13 Channel I/O pins include the HI, LO, HI Sense and LO Sense terminals. The Shield GND terminals of the output connector are connected to chassis ground and not considered channel I/O pins.

14 When sourcing while measuring, both the Source Delay and Aperture Time affect the sampling rate. When taking a measure record, only the Aperture Time affects the sampling rate.

15 As the Source Delay is adjusted, or if advanced sequencing is used, maximum update rates vary.

16 Pulse widths and logic levels are compliant with PXI Express Hardware Specification Revision 1.0 ECN 1.

17 Input triggers can come from any source (PXI trigger or software trigger) and be exported to any PXI trigger line. This allows for easier multi-board synchronization regardless of the trigger source.

18 As the Source Delay is adjusted, or if advanced sequencing is used, maximum update rates vary.

19 As the Source Delay is adjusted, or if advanced sequencing is used, maximum update rates vary.

20 Not all chassis can achieve this ambient temperature range. Refer to PXI chassis specifications to determine the ambient temperature ranges your chassis can achieve.

21 Maximum ambient temperature deratings apply when operating the 25 A range above certain current levels. Refer to the Instrument Capabilities section for additional details.