PXI-4072 Specifications

PXI-4072 Specifications

These specifications apply to the PXI-4072, a 6½-Digit, ±300 V, Onboard 1.8 MS/s Isolated Digitizer, L and C Measurement Support, PXI Digital Multimeter.

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.

Tcal is the device temperature at last self-calibration or external calibration.

Conditions

Specifications are valid under the following conditions unless otherwise noted.

  • Calibration interval of 2 years
  • Warm-up time of 1 hour
  • Resolution set to 6.5 digits for specifications requiring an aperture greater than or equal to 100 ms

DC Specifications

Table 1. PXI-4072 DC Speeds, Nominal
Digits Bits Max sampling rate[1]1 Maximum sampling rates refer to waveform acquisition in digitizer mode. (Digitizer) Reading rate[2]2 Auto Zero disabled, except 7 digits, measured on a 10 V and 10 kΩ range. (DMM)
7 23 5 S/s 5 S/s
6½ 22 100 S/s 100 S/s
5½ 18 5 kS/s 3 kS/s
4½ 15 20 kS/s 7 kS/s
3 10 1.8 MS/s N/A
Figure 1. DC Voltage Maximum Reading Rate, Nominal

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DC System Speeds

Range or function change 100/s
Auto range time, DC V 5 ms
Auto range time, DC I 5 ms
Auto range time, resistance 50 ms
Trigger latency 2 μs
Maximum trigger rate 6 kHz

DC Accuracy Specifications

All DC accuracy specifications apply to 6½-digit resolution (≥1 PLC), Auto Zero and ADC calibration enabled.

Table 2. DC Voltage ± (ppm of reading + ppm of range)
Range Resolution Input resistance 24 hour[3]3 Relative to external calibration source. Tcal ±1 °C 90 day[4]4 Using internal self-calibration; specifications valid over the entire operating temperature range. Tcal±5 °C 2 year[5]5 Using internal self-calibration; specifications valid over the entire operating temperature range. Tcal±5 °C Tempco/°C (0 °C to 55 °C)
Without Self-cal With Self-cal
100 mV [6]6 With offset nulling and 100 ms aperture. 100 nV
  • >10 GΩ
  • 10 MΩ, nominal
10 + 10 30 + 20 40 + 20 4 + 5 0.3 + 0.3
1 V 1 μV
  • >10 GΩ
  • 10 MΩ, nominal
6 + 2 20 + 6 25 + 6 2 + 1 0.3 + 0.3
10 V 10 μV
  • >10 GΩ
  • 10 MΩ, nominal
4 + 2 20 + 6 25 + 6 1 + 1 0.3 + 0.3
100 V 100 μV 10 MΩ, nominal 6 + 2 30 + 6 35 + 6 4 + 1 0.3 + 0.3
300 V 1 mV 10 MΩ, nominal 6 + 6 30 + 20 35 + 20 4 + 3 0.3 + 0.3
Table 3. DC Current ± (ppm of reading + ppm of range)
Range Resolution Burden voltage, typical Noise (ppm of range RMS) 2 year (0 °C to 55 °C) Tempco/°C (0 °C to 55 °C)
20 mA 10 nA <20 mV 20 400 + 150 8 + 1
200 mA 100 nA <200 mV 3 400 + 20 8 + 0.2
1 A 1 μA <800 mV 3 500 + 50 8 + 0.4
Note For DC current, typical 24 hour accuracy (23 °C±1 °C) is ±(50 ppm of reading + 5 ppm of range).
Table 4. Resistance (4-Wire and 2-Wire) ± (ppm of reading + ppm of range)
Range Test current[7]7 -10% to 0% tolerance. Max test voltage[8]8 Highest nominal voltage present with highest range resistance applied. Open circuit voltage[9]9 Nominal voltage present at output with no resistance load. 24 hour[10]10 Relative to external calibration source. Tcal ±1 °C 90 day[11]11 Using internal self-calibration; specifications valid over the entire operating temperature range. Tcal±5 °C 2 year[12]12 Using internal self-calibration; specifications valid over the entire operating temperature range. Tcal±5 °C Tempco/°C (0 °C to 55 °C)
Without Self-cal With Self-cal
100 Ω[13]13 With offset compensated ohms enabled. 1 mA 100 mV 11.5 15 + 10 50 + 10 80 + 10 8 + 1 0.8 + 1
1 kΩ[14]14 With offset compensated ohms enabled. 1 mA 1 V 11.5 12 + 2 50 + 3 80 + 3 8 + 0.1 0.8 + 0.1
10 kΩ[15]15 With offset compensated ohms enabled. 100 μA 1 V 12.2 12 + 2 50 + 3 80 + 3 8 + 0.1 0.8 + 0.1
100 kΩ 10 μA 1 V 12.2 15 + 2 50 + 6 80 + 6 8 + 0.5 0.8 + 0.5
1 MΩ 10 μA 10 V 12.2 20 + 2 60 + 10 90 + 10 8 + 1 0.8 + 1
10 MΩ 1 μA 10 V 12.2 100 + 2 200 + 10 400 + 10 30 + 3 30 + 3
100 MΩ [16]16 2-wire resistance measurement only. Typical accuracy is 5% between 105 MΩ and 1.05 GΩ. Use tempco outside 18 °C to 28 °C. 1 μA|| 10 MΩ 10 V 9.6 900 + 20 5,500 + 40 6,000 + 40 200 +10 200 + 10
Note For 2-wire resistance measurements, perform offset nulling or add 200 mΩ to reading.
Table 5. Diode Test
Range Resolution Test current[17]17 -10% to 0% tolerance. Accuracy
10 V 10 μV 1 μA, 10 μA, 100 μA, 1 mA[18]18 Up to 4.5 V measurement for 1 mA test current. Add 20 ppm of reading to 10 VDC voltage specifications.
Table 6. Additional Noise Errors for DC Voltage, Current, Resistance
Resolution Additional noise error
5½ digits 10 ppm of range
5 digits 30 ppm of range
4½ digits 100 ppm of range

DC Functions General Specifications

Effective CMRR (1 kΩ resistance in LO lead) >140 dB (DC), 100 ms aperture; >170 dB ( >46 Hz) with high-order DC noise rejection, 100 ms aperture
Maximum 4-wire lead resistance Use the lesser of 10% of range or 1 kΩ
Overrange 105% of range except 300 V and 1 A range
DC voltage input bias current <30 pA at 23 °C, typical
Table 7. Normal-Mode Rejection Ratio (NMRR)
Readings/s NMRR Conditions
10 >100 dB [19]19 With high-order DC noise rejection; 100 ms aperture. All noise sources >46 Hz
50 (60) >60 dB [20]20 With normal DC noise rejection; 20 ms (16.67 ms) aperture. 50 (60) Hz ±0.1%

AC Specifications

All AC speed specifications apply with Auto Zero disabled.

Table 8. PXI-4072 AC Bandwidth
Digits Reading rate Bandwidth
6½ 0.25 S/s 1 Hz to 300 kHz
6½ 2.5 S/s 10 Hz to 300 kHz
6½ 25 S/s 100 Hz to 300 kHz
6½ 100.0 S/s 400 Hz to 300 kHz
5½ 1.0 kS/s 20 kHz to 300 kHz

AC System Speeds

Range or function change 10/s
Auto range time, AC V and AC I 250 ms
Trigger latency 2 μs
Maximum trigger rate 1 kHz

AC Accuracy Specifications

All AC accuracy specifications apply to 6½ digit resolution, signal amplitudes greater than 1% of range, and Auto Zero enabled. AC accuracy specifications also apply to measurement aperture greater than 4/fL, where fL is the lowest frequency component of the signal being measured.

Table 9. AC Voltage 2 Year ± (% of reading + % of range), 23 °C ± 10 °C
Range (RMS) Peak voltage Resolution 1 Hz to 40 Hz[21]21 Specification applies for DC coupling. >40 Hz to 20 kHz >20 kHz to 50 kHz >50 kHz to 100 kHz[22]22 Above 150 V with V-Hz above 1.5 × 107, specifications are typical. >100 kHz to 300 kHz[23]23 Above 150 V with V-Hz above 1.5 × 107, specifications are typical.
50 mV [24]24 Applies to signals >2 mV. ±105 mV 100 nV 0.1 + 0.04 0.05 + 0.04 0.09 + 0.04 0.5 + 0.08 3 + 0.1
500 mV ±1.05 V 1 μV 0.1 + 0.01 0.05 + 0.02 0.09 + 0.02 0.5 + 0.02 3 + 0.05
5 V ±10.5 V 10 μV
50 V ±105 V 100 μV
300 V ±450 V 1 mV
Tempco/°C (0 °C to 55 °C) 0.001 + 0.001 0.001 + 0.001 0.001 + 0.001 0.001 + 0.001 0.01 + 0.01
Note AC voltage specifications are after self-calibration.
Table 10. AC Current 2 Year ± (% of reading + % of range), 0 °C ± 55 °C
Range (RMS) Peak current Resolution Burden voltage (RMS), typical 1 Hz to 20 kHz[25]25 Specification is typical for the 5 kHz to 20 kHz frequency range. Tempco/°C (0 °C to 55 °C)
10 mA [26]26 Applies to signals >200 μA. ±20 mA 10 nA <10 mV 0.04 + 0.02 0.001 + 0.0001
100 mA ±200 mA 100 nA <100 mV 0.04 + 0.02 0.001 + 0.0001
1 A ±2 A 1 μA <800 mV 0.1 + 0.02 0.001 + 0.0001
Note No degradation in accuracy occurs due to crest factor for signals up to the rated peak voltage/current or bandwidth. For high crest factor signals, increase range. For example, for a 500 mVrms signal with a crest factor between 2 and 20, use the 5 V range.

AC Functions General Specifications

Input impedance 1 MΩ in parallel with 150 pF, nominal
Input coupling AC or DC coupling
Overrange 105% of range except 300 V, 1 A range
Maximum Volt-Hertz product >8 × 107 V-Hz
Maximum DC voltage component 250 V
CMRR (1 kΩ resistance in LO lead) >70 dB (DC to 60 Hz)

Frequency and Period

Table 11. PXI-4072 Frequency and Period
Input range Frequency range Period range Resolution 2 year accuracy[27]27 0.00025% of reading, typical.0 °C to 55 °C± % of reading
50 mV to 300 V 1 Hz to 500 kHz 1 s to 2 μs 6½ digits 0.01
Note Frequency and period specifications have a 2 second gate time. The input signal must be >10% of AC voltage input range.

Capacitance and Inductance Specifications

Capacitance Accuracy Specifications

Table 12. Capacitance ± (% of reading + % of range), 23 °C ± 10 °C
Range Resolution 2 year[28]28 Relative to external calibration source. After lead compensation with <3 meters of coaxial or shielded twisted-pair cabling. Number of averages = 20. Specifications apply to >5% of range and <110% of range, except the 300 pF range, which measures down to 0.05 pF. Tempco/°C (0 °C to 55 °C) Effective test current[29]29 Correlated to single-tone test method. Effective frequency[30]30 Correlated to single-tone test method. Default model
300 pF 0.05 pF 0.15 + 0.5 0.01 + 0.025 160 nA 3 kHz Parallel
1 nF 0.1 pF 0.15 + 0.1 0.01 + 0.003 330 nA 3 kHz Parallel
10 nF 1 pF 0.15 + 0.1 0.01 + 0.001 330 nA 3 kHz Parallel
100 nF 10 pF 0.15 + 0.1 0.01 + 0.001 3.3 μA 3 kHz Parallel
1 μF 100 pF 0.18 + 0.1 0.01 + 0.001 100 μA 1 kHz Series
10 μF 1 nF 0.18 + 0.1 0.01 + 0.001 1 mA 1 kHz Series
100 μF 10 nF 0.18 + 0.1 0.01 + 0.001 1 mA 91 Hz Series
1,000 μF 100 nF 0.18 + 0.1 0.01 + 0.001 1 mA 91 Hz Series
10,000 μF 1 μF 0.18 + 0.1 0.01 + 0.001 1 mA 91 Hz Series

Inductance Accuracy Specifications

Table 13. Inductance ± (% of reading + % of range), 23 °C ± 10 °C
Range Resolution 2 year[31]31 Relative to external calibration source. After lead compensation with <3 meters of coaxial or shielded twisted-pair cabling. Number of averages = 20. Specifications apply to <110% of range. Tempco/°C (0 °C to 55 °C) Effective test current[32]32 Correlated to single-tone test method. Effective frequency[33]33 Correlated to single-tone test method. Default model
10 μH 1 nH 0.5 + 1 0.01 + 0.01 330 μA 30 kHz Series
100 μH 10 nH 0.2 + 0.1 0.01 + 0.01 330 μA 30 kHz Series
1 mH 100 nH 0.2 + 0.1 0.01 + 0.001 330 μA 3 kHz Series
10 mH [34] 34 Specifications apply to <1% of range. 1 μH 0.15 + 0.1 0.005 + 0.001 3.3 μA 3 kHz Series
100 mH [34] 10 μH 0.15 + 0.1 0.005 + 0.001 33 μA 273 Hz Series
1 H 100 μH 0.18 + 0.1 0.007 + 0.001 3.3 μA 273 Hz Series
5 H 1 mH 0.18 + 0.1 0.007 + 0.001 330 nA 273 Hz Series

Capacitance and Inductance General Specifications

Range or function change

10/s

Capacitance

300 pF, 1 nF, 10 nF, 100 nF, 1 μF, 10 μF

20 S/s

100 μF, 1,000 μF, 10,000 μF

3 S/s

Capacitance underrange

5% of range

DC bias (capacitance only)

0.46 V from HI to LO, user-selectable (OFF by default)

Inductance

10 μH, 100 μH

40 S/s

1 mH, 10 mH

20 S/s

100 mH, 1 H, 5 H

3 S/s

Inductance overrange

110% of range

Excitation technique[35]35 Patents pending.

Multi-tone, constant current

Measurement technique[35]

Measures fundamental and third harmonic of voltage waveform and calculates inductance or capacitance using FFT peak analysis

Lead compensation

OPEN/SHORT

Measurement configuration

2-wire with lead compensation

Temperature Accuracy Specifications (°C)

Note Tcal is the device temperature at last external calibration. For total measurement accuracy, add temperature probe error.
Table 14. Thermocouple Temperature Accuracy Specifications (°C)
Type Range 2 Year Tcal±5 °C Tempco/°C[36]36 Tempco is the temperature coefficient, expressed in degrees of measurement uncertainty per degree change in DMM instrument operating temperature. Resolution
With Simulated Ref. Junction [37]37 Using simulated reference junction. With PXI-2527[38]38 Includes PXI-2527 with TB-2627 with a typical 0.5 °C CJC error and a typical thermal EMF offset of 2.5 μV for CJC temperatures between 15 °C and 35 °C. Add an additional 0.5 °C uncertainty when CJC is in the range 0-15 °C or 35-50 °C.
J -150 to 1200 0.3 1.0 0.03 0.1
-210 to -150 0.4 1.2 0.03 0.1
K -100 to 1200 0.4 1.0 0.03 0.1
-200 to -100 0.4 1.5 0.03 0.1
N -100 to 1300 0.3 1.0 0.03 0.1
-200 to -100 0.6 1.5 0.03 0.1
T -100 to 400 0.3 1.0 0.03 0.1
-200 to -100 0.4 1.5 0.03 0.1
E -150 to 1000 0.2 1.0 0.03 0.1
-200 to -150 0.3 1.5 0.03 0.1
R 300 to 1760 0.6 1.8 0.06 0.1
-50 to 300 1.4 1.9 0.06 0.1
S 400 to 1760 0.7 1.8 0.06 0.1
-50 to 400 1.3 1.8 0.06 0.1
B 1100 to 1820 0.6 1.8 0.09 0.1
400 to 1100 1.4 1.9 0.09 0.1
Table 15. RTD Temperature Accuracy Specifications (°C)
Range 2 year Tcal ±5 °C [39]39 Using simulated reference junction. Tempco/°C [40]40 Tempco is the temperature coefficient, expressed in degrees of measurement uncertainty per degree change in DMM instrument operating temperature. Resolution
-200 to 600 0.14 0.011 0.01
Note Based on RTD with RO = 100 Ω Pt3851 RTD in a 4-wire configuration, using lowest possible resistance range for each temperature. For total measurement accuracy, add temperature probe error.
Table 16. Thermistor Temperature Accuracy Specifications (°C)
Range 2 year Tcal ±5 °C [41]41 Using simulated reference junction. Tempco/°C [42]42 Tempco is the temperature coefficient, expressed in degrees of measurement uncertainty per degree change in DMM instrument operating temperature. Resolution
-80 to 150 0.08 0.002 0.01

Isolated Digitizer Specifications

Note All digitizer accuracy specifications apply to Auto Zero enabled, DC coupling, after self-calibration, and 1.8 MS/s sampling rate. For basic DC accuracy, refer to the DC voltage specifications and DC current specifications in the DC Specifications section.
Table 17. Voltage Mode
Range Input impedance,[43]43 In parallel with 150 pF. nominal Flatness error 20 kHz, typical Bandwidth (-3 dB), Typical[44]44 The AC coupling low frequency (-3 dB) point is 0.8 Hz. THD 1 kHz signal, -1 dBfs, typical THD 20 kHz signal, -1 dBfs, typical
100 mV >10 GΩ, 1 MΩ -0.03 dB 300 kHz -104 dB -78 dB
1 V >10 GΩ, 1 MΩ -0.03 dB 300 kHz -109 dB -83 dB
10 V >10 GΩ, 1 MΩ -0.03 dB 300 kHz -96 dB -70 dB
100 V 1 MΩ -0.03 dB 300 kHz -96 dB -70 dB
300 V 1 MΩ -0.03 dB 300 kHz -98 dB -72 dB
Table 18. Current Mode
Range Resolution Burden voltage, typical Flatness error 20 kHz, typical Bandwidth (-3 dB), typical
20 mA 10 nA <20 mV ±0.01 dB 430 kHz
200 mA 100 nA <200 mV ±0.01 dB 430 kHz
1 A 1 μA <800 mV ±0.01 dB 400 kHz

Acquisition System

Table 19. Sampling Rate and Record Duration
Available sampling rates
r⁢= 1.8⁢ MS/sy
, where y = 1, 2, 3,...1.8 × 105
Minimum record duration 8.89 μs
Maximum record duration 149 s
Record duration n/r, where n = number of samples, r = sampling rate
Variable resolution 10-23 bits; refer to Digitizer Maximum Sampling Rate graph
Available functions Voltage and current
Voltage ranges ±100 mV to ±300 V (DC or AC coupled)
Current ranges ±20 mA to ±1 A
Timebase accuracy 25 ppm
Table 20. Input Trigger
Latency[45]45 The latency specification value actually reflects negative latency due to sampling before the trigger. Can be reduced to near zero (with the jitter specification) or made positive in software by adding a trigger delay. 1.8 μs
Jitter <600 ns
Note Refer to Trigger Specifications for additional input trigger specifications.
Figure 2. Digitizer Maximum Sampling Rate, Nominal

1378

General Specifications

Warm-up 1 hour to rated accuracy
Self-calibration Calibrates the FlexDMM relative to high-precision internal voltage and resistance standards. No external calibration equipment required.
External calibration interval 2 years recommended
Measurement category I (up to 300 V) and

II (up to 250 VACrms, 220 VDC)
Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.
Table 21. Input Protection
Resistance, diode Up to 300 VDC
DC V, AC V Up to 300 VDC or VACrms, 450 V AC peak
DC I and AC I F 1.25 A250 V fast-acting user-replaceable fuse
Maximum common-mode voltage 300 VACrms or VDC
Fuse When this fuse symbol is marked on a device, take proper precautions.
Caution Take precautions to avoid electrical shock.

Trigger Specifications

Table 24. Trigger Specifications
Measurement complete trigger pulse width 3 μs
Input trigger pulse width 1 μs, with <2 m cable
Table 24. Trigger Voltage Levels
Vin High 2.0 V min
Vin Low 0.8 V max
Vout High 2.4 V min
Vout Low 0.4 V max
Table 24. Trigger Voltage Level Absolute Maximums
Vin High 5.5 V
Vin Low -0.5 V
Note Triggers are LVTTL/TTL compatible.
Note The AUX I/O connector on the PXI-4072 is not isolated. This connector is not referenced to the measurement circuit but is referenced to the ground of the PXI chassis. Do not operate the digital signals of this connector beyond -0.5 V to 5.5 V of the PXI chassis ground.

Power Requirements

Caution You can impair the protection provided by the PXI-4072 if you use it in a manner not described in this document.

Power consumption

<12 W from PXI backplane

Physical Characteristics

Dimensions

3U, one-slot, PXI/cPCI module

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

Weight

370 g (13 oz), nominal

Note If you need to clean the device, wipe it with a dry towel.

Environment

Maximum altitude 2,000 m (at 25 °C ambient temperature)
Pollution degree 2
Indoor use only

Operating Environment

Ambient temperature range

0 °C to 55 °C (Tested in accordance with IEC 60068-2-1 and IEC 60068-2-2.)

Relative humidity range

Up to 95% RH at 40 °C, noncondensing

Storage Environment

Ambient temperature range -40 °C to 70 °C (Tested in accordance with IEC 60068-2-1 and IEC 60068-2-2.)
Relative humidity range 5% to 95%, noncondensing (Tested in accordance with IEC 60068-2-56.)

Shock and Vibration

Operational shock

30 g peak, half-sine, 11 ms pulse (Tested in accordance with IEC 60068-2-27. Test profile developed in accordance with MIL-PRF-28800F.)

Random vibration

Operating

5 Hz to 500 Hz, 0.31 grms (Tested in accordance with IEC 60068-2-64.)

Nonoperating

5 Hz to 500 Hz, 2.46 grms (Tested in accordance with IEC 60068-2-64. Test profile exceeds the requirements of MIL-PRF-28800F, Class 3.)

Compliance and Certifications

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.

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

  • 1378 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）

  • 1378 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 Maximum sampling rates refer to waveform acquisition in digitizer mode.

    2 Auto Zero disabled, except 7 digits, measured on a 10 V and 10 kΩ range.

    3 Relative to external calibration source.

    4 Using internal self-calibration; specifications valid over the entire operating temperature range.

    5 Using internal self-calibration; specifications valid over the entire operating temperature range.

    6 With offset nulling and 100 ms aperture.

    7 -10% to 0% tolerance.

    8 Highest nominal voltage present with highest range resistance applied.

    9 Nominal voltage present at output with no resistance load.

    10 Relative to external calibration source.

    11 Using internal self-calibration; specifications valid over the entire operating temperature range.

    12 Using internal self-calibration; specifications valid over the entire operating temperature range.

    13 With offset compensated ohms enabled.

    14 With offset compensated ohms enabled.

    15 With offset compensated ohms enabled.

    16 2-wire resistance measurement only. Typical accuracy is 5% between 105 MΩ and 1.05 GΩ. Use tempco outside 18 °C to 28 °C.

    17 -10% to 0% tolerance.

    18 Up to 4.5 V measurement for 1 mA test current.

    19 With high-order DC noise rejection; 100 ms aperture.

    20 With normal DC noise rejection; 20 ms (16.67 ms) aperture.

    21 Specification applies for DC coupling.

    22 Above 150 V with V-Hz above 1.5 × 107, specifications are typical.

    23 Above 150 V with V-Hz above 1.5 × 107, specifications are typical.

    24 Applies to signals >2 mV.

    25 Specification is typical for the 5 kHz to 20 kHz frequency range.

    26 Applies to signals >200 μA.

    27 0.00025% of reading, typical.

    28 Relative to external calibration source. After lead compensation with <3 meters of coaxial or shielded twisted-pair cabling. Number of averages = 20. Specifications apply to >5% of range and <110% of range, except the 300 pF range, which measures down to 0.05 pF.

    29 Correlated to single-tone test method.

    30 Correlated to single-tone test method.

    31 Relative to external calibration source. After lead compensation with <3 meters of coaxial or shielded twisted-pair cabling. Number of averages = 20. Specifications apply to <110% of range.

    32 Correlated to single-tone test method.

    33 Correlated to single-tone test method.

    34 Specifications apply to <1% of range.

    35 Patents pending.

    36 Tempco is the temperature coefficient, expressed in degrees of measurement uncertainty per degree change in DMM instrument operating temperature.

    37 Using simulated reference junction.

    38 Includes PXI-2527 with TB-2627 with a typical 0.5 °C CJC error and a typical thermal EMF offset of 2.5 μV for CJC temperatures between 15 °C and 35 °C. Add an additional 0.5 °C uncertainty when CJC is in the range 0-15 °C or 35-50 °C.

    39 Using simulated reference junction.

    40 Tempco is the temperature coefficient, expressed in degrees of measurement uncertainty per degree change in DMM instrument operating temperature.

    41 Using simulated reference junction.

    42 Tempco is the temperature coefficient, expressed in degrees of measurement uncertainty per degree change in DMM instrument operating temperature.

    43 In parallel with 150 pF.

    44 The AC coupling low frequency (-3 dB) point is 0.8 Hz.

    45 The latency specification value actually reflects negative latency due to sampling before the trigger. Can be reduced to near zero (with the jitter specification) or made positive in software by adding a trigger delay.