PXIe-4142 Specifications

These specifications apply to the PXIe-4142.

Revision History

Version Date changed Description
373706H-01 July 2025 Updated pinout.
373706G-01 April 2025 Updated minimum aperture time.
373706F-01 April 2024 Restored power requirements specifications.
373706E-01 November 2018 Expanded EMC and trigger specifications.
373706D-01 January 2017 Updated standards, structure, terminology.
373706C-01 October 2013 Removed PXIe-4143 specifications.
373706B-01 April 2013 Updated footnote.
373706A-01 July 2012 Initial release.

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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
  • Calibration interval of 1 year
  • 30 minutes warm-up time
  • Self-calibration performed within the last 24 hours
  • niDCPower Aperture Time property or NIDCPOWER_ATTR_APERTURE_TIME attribute set to 2 power-line cycles (PLC)
  • Fans set to the highest setting if the PXI Express chassis has multiple fan speed settings

PXIe-4142 Pinout

The following figure shows the terminals on the PXIe-4142 connector.

Figure 4. PXIe-4142 Connector Pinout


Table 3. Signal Descriptions
Signal Name Description
CH <0..3> Output HI HI force terminal connected to channel power stage (generates and/or dissipates power). Positive polarity is defined as voltage measured on HI > LO.
CH <0..3> Guard Buffered output that follows the voltage of the HI force terminal. Used to drive shield conductors surrounding HI force and Sense HI conductors to minimize effects of leakage and capacitance on low level currents.
CH <0..3> Output LO LO force terminal connected to channel power stage (generates and/or dissipates power). Positive polarity is defined as voltage measured on HI > LO.
CH <0..3> Sense HI Voltage remote sense input terminals. Used to compensate for I*R voltage drops in cable leads, connectors, and switches.
CH <0..3> Sense LO
NC No Connect.
Note PXIe-4142 channels are bank-isolated from earth ground, but also share a common LO.

Device Capabilities

The following table and figure illustrate the voltage and the current source and sink ranges of the PXIe-4142.

Table 4. PXIe-4142 Current Source and Sink Ranges
Channels DC Voltage Ranges DC Current Source and Sink Ranges
0 through 3* ±24 V
  • 10 μA
  • 100 μA
  • 1 mA
  • 10 mA
  • 150 mA
* Channels are isolated from earth ground but share a common LO.
Figure 5. PXIe-4142 Quadrant Diagram, All Channels


SMU Specifications

Voltage Programming and Measurement Accuracy/Resolution

Table 5. Voltage Programming and Measurement Accuracy/Resolution
Range Resolution and noise (0.1 Hz to 10 Hz) Accuracy (23 °C ± 5 °C) ± (% of voltage + offset),[2]2 Accuracy is specified for no load output configurations. Refer to Load Regulation and Remote Sense in the Additional Specifications section for additional accuracy derating and conditions. Tcal±5 °C Temperature Coefficient ± (% of Voltage + Offset) / °C[3]3 Temperature Coefficient applies beyond 23 °C ± 5 °C within a given tolerance of Tcal., 0 °C to 55 °C
24 V 200 μV 0.1% + 10 mV 0.0005% + 1 μV

Current

Table 6. Current Programming and Measurement Accuracy/Resolution
Range Resolution and noise (0.1 Hz to 10 Hz) Accuracy (23 °C ± 5 °C) ± (% of current + offset), Tcal ±5 °C Tempco ± (% of current + offset)/°C, 0 °C to 55 °C [4]4 Temperature Coefficient applies beyond 23 °C ± 5 °C within a given tolerance of Tcal.
10 μA 100 pA 0.1% + 5.0 nA 0.002% + 10 pA
100 μA 1 nA 0.1% + 50 nA 0.002% + 100 pA
1 mA 10 nA 0.1% + 0.5 μA 0.002% + 1.0 nA
10 mA 100 nA 0.1% + 5.0 μA 0.002% + 10 nA
150 mA 1.5 μA 0.1% + 75 μA 0.002% + 150 nA

Example of Calculating SMU Resolution

The PXIe-4142 has a resolution of 1,000 ppm when set to a 100 μs aperture time. In the 24 V range, resolution can be calculated by multiplying 24V by 1,000 ppm, as shown in the following equation:

24 V * 1,000 ppm = 24 V * 1,000 * 1 × 10-6 = 24 mV

Likewise, in the 150 mA range, resolution can be calculated by multiplying 150 mA by 1,000 ppm, as shown in the following equation:

150 mA * 1,000 ppm = 150 mA * 1,000 * 1 × 10-6 = 150 μA

Calculating SMU Resolution

Refer to the following figure as you complete the following steps to derive a resolution in absolute units:

Figure 6. Noise and Resolution versus Measurement Aperture, Typical


  1. Select a voltage or current range.
  2. For a given aperture time, find the corresponding resolution.
  3. To convert resolution from ppm of range to absolute units, multiply resolution in ppm of range by the selected range.

Additional Specifications

Settling time[5]5 Current limit set to ≥1 mA and ≥10% of the selected current limit range.

<100 μs to settle to 0.1% of voltage step, device configured for fast transient response, typical

Transient response

<100 μs to recover within ±20 mV after a load current change from 10% to 90% of range, device configured for fast transient response, typical

Wideband source noise[6]6 20 Hz to 20 MHz bandwidth. PXIe-4142 configured for normal transient response.

2 mV RMS, typical

<20 mVpk-pk, typical

Cable guard output impedance

10 kΩ, typical

Remote sense

Voltage

Add 0.1% of LO lead drop to voltage accuracy specification

Current

Add 0.03% of range per volt of total HI and LO lead drop to current accuracy specification

Maximum lead drop

Up to 1 V drop per lead

Load regulation

Voltage

10 μV at connector pins per mA of output load when using local sense, typical

Current

20 pA + (10 ppm of range per volt of output change) when using local sense, typical

Isolation voltage, channel-to-earth ground[7]7 Channels are isolated from earth ground but share a common LO.

60 VDC, CAT I, verified by dielectric withstand test, 5 s, continuous

Absolute maximum voltage between any terminal and LO

30 VDC, continuous

The following figures illustrate the effect of the transient response setting on the step response of the PXIe-4142 for different loads.

Figure 7. 1 mA Range No Load Step Response, Typical


Figure 8. 1 mA Range, 100 nF Load Step Response, Typical


Supplemental Specifications

Measurement and Update Timing

Table 7. Sample Rate Specifications
Available sample rates[8]8 When source-measuring, both the NI-DCPower Source Delay and Aperture Time properties affect the sampling rate. When taking a measure record, only the Aperture Time property affects the sampling rate.

(600 kS/s)/N

where

  • N = 1, 2, 3, … 220
  • S is samples
Sample rate accuracy ±50 ppm
Maximum measure rate to host[9]9 Load dependent settling time is not included. Normal DC noise rejection is used. 600,000 S/s per channel, continuous
Table 8. Input Trigger to
Source event delay 5 µs
Source event jitter 1.7 μs
Measure event jitter 1.7 μs

Triggers

Input triggers

Types

Start

Source

Sequence Advance

Measure

Sources (PXI trigger lines 0 to 7)

Polarity

Configurable

Minimum pulse width

100 ns, nominal

Destinations[10]10 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 to 7)

Polarity

Active high (not configurable)

Minimum pulse width

>200 ns, nominal

Output triggers (events)

Types

Source Complete

Sequence Iteration Complete

Sequence Engine Done

Measure Complete

Destinations (PXI trigger lines 0 to 7)

Polarity

Configurable

Pulse width

Configurable between 250 ns and 1.6 μs, nominal

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

Calibration Interval

Recommended calibration interval

1 year

Physical

Dimensions

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

2.0 cm × 13.0 cm × 21.6 cm (0.8 in. × 5.1 in. × 8.5 in.)

Weight

412 g (14.53 oz)

Front panel connectors

25-position D-SUB, male

Power Requirements

PXI Express power requirement

2 A from the 12 V rail and 1.9 A from the 3.3 V rail

Environmental Characteristics

Table 9. Temperature
Operating0 °C to 55 °C
Storage-40 °C to 70 ºC
Table 10. Humidity
Operating10% to 70%, noncondensing. Derate 1.3% per °C above 40 °C
Storage5% to 95%, noncondensing
Table 11. Pollution Degree
Pollution degree2
Table 12. Maximum Altitude
Maximum altitude2,000 m (800 mbar) (at 25 °C ambient temperature)
Table 13. 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 shock30 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 Accuracy is specified for no load output configurations. Refer to Load Regulation and Remote Sense in the Additional Specifications section for additional accuracy derating and conditions.

3 Temperature Coefficient applies beyond 23 °C ± 5 °C within a given tolerance of Tcal.

4 Temperature Coefficient applies beyond 23 °C ± 5 °C within a given tolerance of Tcal.

5 Current limit set to ≥1 mA and ≥10% of the selected current limit range.

6 20 Hz to 20 MHz bandwidth. PXIe-4142 configured for normal transient response.

7 Channels are isolated from earth ground but share a common LO.

8 When source-measuring, both the NI-DCPower Source Delay and Aperture Time properties affect the sampling rate. When taking a measure record, only the Aperture Time property affects the sampling rate.

9 Load dependent settling time is not included. Normal DC noise rejection is used.

10 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.