PXIe-4112 Specifications

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Updated2025-05-07
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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 2 years
30 minutes warm-up time
niDCPower Power Line Frequency property or NIDCPOWER_ATTR_POWER_LINE_FREQUENCY attribute set to 1 power line cycle (PLC)
niDCPower Samples to Average property or NIDCPOWER_ATTR_SAMPLES_TO_AVERAGE attribute set to 300 for optimal 50 Hz and 60 Hz rejection
If the PXI Express chassis has multiple fan speed settings, fans set to the highest setting

PXIe-4112 Pinout

Output Connector

Table 2. Signal Descriptions
Signal	Description
CH <0..1> +	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..1> -	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..1> Sense +	Voltage remote sense input terminals. Used to compensate for I*R voltage drops in cable leads, connectors, and switches.
CH <0..1> Sense -
GND	Tied to chassis ground through module front panel. Use for connections to cable shields or grounding the LO force terminal.

Auxiliary Power Input Connector

Table 3. Signal Descriptions
Signal	Description
Terminal 0 +	Positive Auxiliary Power Input
Terminal 1 -	Negative Auxiliary Power Input

Device Capabilities

The PXIe-4112 is a single-quadrant power supply with two output channels that are capable of identical output. Channels are isolated from each other and from chassis ground.

DC voltage
Voltage range	60 V

Minimum programmable voltage level/limit

0.1 V

DC current
Current range	1 A
Minimum programmable current level/limit	0.01 A

Output power

60 W/channel

The following figure illustrates the voltage and the current source capabilities of the PXIe-4112.

Programming and Measurement Accuracy/Resolution

Table 4. Programming and Measurement Accuracy/Resolution
Specification	Resolution	Accuracy ± (% of output + offset), T_cal ± 5 °C^*	Temperature Coefficient/°C, outside T_cal ± 5 °C
Voltage programming	2 mV^†	0.12% + 55 mV	0.008% + 0.3 mV
Voltage measurement	17 mV^‡	0.1% + 50 mV	0.004% + 1.5 mV
Current programming	34 μA^†	0.15% + 10 mA² T_cal is the internal device temperature recorded by the PXIe-4112 at the completion of the last external calibration.	0.015% + 0.05 mA
Current measurement	274 μA^‡	0.15% + 4 mA	0.015% + 0.05 mA
^* T_cal is the internal device temperature recorded by the PXIe-4112 at the completion of the last self-calibration. ^† Based on 16-bit DAC after calibration. ^‡ Based on 14-bit ADC with sign bit after calibration.

Load Regulation

Voltage (per amp of output load)	12 mV
Current (per volt of output change)	32 μA

Note Voltage load regulation is measured at the output channel terminals with the device configured for local sense.

Voltage Output Speed

Rise time (measured from 10% to 90% of programmed voltage change from 0.1 V to 60 V with specified load)
Full resistive load (60 Ω)	<20 ms, typical
No load	<10 ms, typical

Fall time (measured from 10% to 90% of programmed voltage change from 60 V to 0.1 V with specified load)
Full resistive load (60 Ω)	<20 ms, typical
No load	<40 ms, typical

Transient Response and Settling Time

Transient response

<200 μs to recover within 200 mV of voltage level after a load current change from 50% to 100% of current range, typical

Settling time

Rise time (time to settle within 0.1% of final programmed voltage level from 0.1 V to 60 V with specified load)
Full resistive load (60 Ω)	40 ms, typical
No load	40 ms, typical

Fall time (time to settle within 0.1% of final programmed voltage level from 60 V to 0.1 V with specified load)
Full resistive load (60 Ω)	100 ms, typical
No load	100 ms, typical

Ripple and Noise

Voltage^[3]³ Noise is measured from 20 Hz to 20 MHz at output voltages of 0.5 V to 60 V.
Peak-to-peak	<24 mV, typical
RMS	<4 mV, typical

Current, RMS^[4]⁴ Noise bandwidth is limited to 10 kHz and measured at 20 mA into a 500 Ω load.

<2 mA, typical

Auxiliary Power Input Line Regulation

Line regulation (per volt of change in the auxiliary power input)
Voltage	1 mV
Current	0.2 mA

Remote Sense

Maximum output lead drop	Up to 1 V drop per lead
Maximum sense lead resistance	Up to 1 Ω per lead

Protection

Output channel protection
Overcurrent or reverse voltage	Reverse clamp diode, protected by thermal overload circuit
Overtemperature	Automatic shutdown

Auxiliary power input protection
Overvoltage, typical	>52.8 VDC shut-off
Overcurrent or reverse voltage	Fused

Absolute Maximum Limit

Note Applying levels beyond the ratings specified in this section can result in permanent damage to the device.

Note Connect only voltages that are within these limits.

Voltage from auxiliary power + to earth ground	60 VDC
Voltage from auxiliary power - to earth ground	1 VDC

Isolation

Isolation voltage, channels 0- and 1-to-earth ground^[5]⁵ Verified with a 5-second dielectric withstand test.
Continuous	150 VDC, CAT I
Withstand	800 V_pk

Caution Do not connect to MAINs. Do not connect to signals or use for the measurements within CAT II, III, or IV.

Note Measurement Categories CAT I and CAT O (Other) are equivalent. These test and measurement circuits are not intended for direct connection to the MAINs building installations of Measurement Categories CAT II, CAT III, or CAT IV.

Hazardous Voltage Take precautions to avoid electrical shock when operating this product at hazardous voltages.

Note Isolation voltage ratings apply to the voltage measured between any channel pin and the chassis ground pins of the front panel. When operating channels in series or floating on top of external voltage references, ensure that no terminal exceeds this rating.

Power Requirement

PXI power requirement	0.5 A from 3.3 V rail, 0.25 A from 12 V rail
Auxiliary power source input requirements	45.6 VDC to 50.4 VDC,3.5 A max

Measurement Timing Characteristics

Measurement rate
Default	60/s (Line frequency set to 60 Hz, aperture set to 1 PLC, measure record mode), nominal
Maximum	5,250/s, nominal

Triggers

Input Triggers

Types

Start

Source

Sequence Advance

Measure

Sources (PXI trigger lines 0 to 7)^[6]⁶ 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^[7]⁷ 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)^[6]
Polarity	Active high (not configurable)
Minimum pulse width	200 ns

Output Triggers (Events)

Types

Source Complete

Sequence Iteration Complete

Sequence Engine Done

Measure Complete

Destinations (PXI trigger lines 0 to 7)^[6]
Polarity	Active high (not configurable)
Pulse width	230 ns

Physical Characteristics

Dimensions	3U, one-slot, PXI Express/cPCI Express module; 2.0 cm × 13.0 cm × 21.6 cm (0.8 in. × 5.1 in. × 8.5 in.), nominal
Weight	443 g, nominal
User-replaceable fuse, auxiliary power input (PCB-mount)	F 6.3 A H 250 V (5 × 20 mm ceramic fuse)

Note NI recommends the Littelfuse 021606.3MXP fuse.

Front panel connectors
Output channels	Phoenix Contact, 5.08 mm (10 position)
Auxiliary power input	Weidmuller, 3.5 mm (2 × 2 position)

Note I/O connectors can accept wire gauges from 12 AWG to 24 AWG. NI recommends 14 AWG or smaller.

Note The PXIe-4112 ships with four sense jumpers installed on the output connector. The sense jumpers connect the sense terminals to their respective output terminals.

Calibration Interval

Recommended calibration interval

2 years

Environment


Maximum altitude	2,000 m (800 mbar) (at 25 °C ambient temperature)
Pollution Degree	2

Indoor use only.

Operating Environment


Ambient temperature range, operating	0 °C to 55 °C
Relative humidity range, operating	10% to 90%, noncondensing

Storage Environment


Ambient temperature range, storage	-40 °C to 71 °C
Relative humidity range, storage	5% to 95%, noncondensing

Shock and Vibration


Operating shock	30 g peak, half-sine, 11 ms pulse
Random vibration	Operating: 5 Hz to 500 Hz, 0.3 g RMS Nonoperating: 5 Hz to 500 Hz, 2.4 g RMS

Cleaning the Module

Clean devices and terminal blocks by brushing off light dust with a soft, nonmetallic brush. Remove other contaminants with a soft, lint-free, dampened cloth. Do not use detergent or chemical solvents. The unit must be completely dry and free from contaminants before returning to service.

Compliance and Certifications

Caution You can impair the protection provided by the PXIe-4112 if you use it in a manner not described in this document.

Caution The auxiliary power input port is sensitive to electrostatic discharge (ESD). When subjected to ESD during normal operation, a fault might result that requires user intervention to recover to normal operation. To ensure proper operation, make all I/O connections before attempting to use the device. In addition, take care to prevent ESD to the auxiliary power input port during normal operation.

Safety Compliance Standards

This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:

IEC 61010-1, EN 61010-1
UL 61010-1, CSA C22.2 No. 61010-1

Note For safety certifications, refer to the product label or the Product Certifications and Declarations section.

Electromagnetic Compatibility

This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:

EN 61326-1 (IEC 61326-1): Class A emissions; Basic immunity
EN 55011 (CISPR 11): Group 1, Class A emissions
EN 55022 (CISPR 22): Class A emissions
EN 55024 (CISPR 24): Immunity
AS/NZS CISPR 11: Group 1, Class A emissions
AS/NZS CISPR 22: Class A emissions
FCC 47 CFR Part 15B: Class A emissions
ICES-001: Class A emissions

Note In the United States (per FCC 47 CFR), Class A equipment is intended for use in commercial, light-industrial, and heavy-industrial locations. In Europe, Canada, Australia, and New Zealand (per CISPR 11), Class A equipment is intended for use only in heavy-industrial locations.

Note Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical equipment that does not intentionally generate radio frequency energy for the treatment of material or inspection/analysis purposes.

Note For EMC declarations, certifications, and additional information, refer to the Product Certifications and Declarations section.

CE Compliance

This product meets the essential requirements of applicable European Directives, as follows:

2014/35/EU; Low-Voltage Directive (safety)
2014/30/EU; Electromagnetic Compatibility Directive (EMC)

Product Certifications and Declarations

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

Environmental Management

NI is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers.

For additional environmental information, refer to the Engineering a Healthy Planet web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

EU and UK Customers

Waste Electrical and Electronic Equipment (WEEE)—At the end of the product life cycle, all NI products must be disposed of according to local laws and regulations. For more information about how to recycle NI products in your region, visit ni.com/environment/weee.

电子信息产品污染控制管理办法（中国RoHS）

中国RoHS— NI符合中国电子信息产品中限制使用某些有害物质指令(RoHS)。关于NI中国RoHS合规性信息，请登录 ni.com/environment/rohs_china。(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)

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

² T_cal is the internal device temperature recorded by the PXIe-4112 at the completion of the last external calibration.

³ Noise is measured from 20 Hz to 20 MHz at output voltages of 0.5 V to 60 V.

⁴ Noise bandwidth is limited to 10 kHz and measured at 20 mA into a 500 Ω load.

⁵ Verified with a 5-second dielectric withstand test.

⁶ Pulse widths and logic levels are compliant with PXI Express Hardware Specification Revision 1.0 ECN 1.

⁷ 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.