# PXIe-4135 Specifications

Version:

These specifications apply to the PXIe-4135.

## 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 expected performance met by a majority of the models.
• Nominal specifications describe parameters and attributes that may be useful in operation.

Specifications are Warranted unless otherwise noted.

## Conditions

Specifications are valid under the following conditions unless otherwise noted.

• Ambient temperature[1] of 23 °C ± 5 ºC
• Relative humidity between 10% and 70%, noncondensing up to 35 °C. Derate max relative humidity 3% per °C for ambient temperatures between 35 °C and 50 °C. From 50 °C to 55 °C, relative humidity between 10% and 25%, noncondensing. See Current Programming and Measurement Accuracy/Resolution for humidity performance restrictions.
• 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
• Triax cover installed on unused triax connections

## Cleaning Statement

Caution

Clean the hardware with a soft, nonmetallic brush. Make sure that the hardware is completely dry and free from contaminants before returning it to service.

Caution

Due to high-impedance circuits used in the hardware, care should be taken to avoid contamination during handling or operation. Avoid use or storage of the hardware in an environment that allows dust to settle on the hardware. Avoid direct contact with the inner surfaces of triax connections. Triax covers should be used whenever triax connections are not in use.

## Device Capabilities

The following table and figure illustrate the voltage and the current source and sink ranges of the PXIe-4135.

Table 1. Current Source and Sink Ranges
DC voltage ranges DC current source and sink ranges
• 600 mV
• 6 V
• 20 V
• 200 V[2]
• 10 nA
• 1 μA
• 100 μA
• 1 mA
• 10 mA
• 100 mA
• 1 A
• 3 A[3]

DC sourcing power is limited to 20 W, regardless of output voltage.[4]

Caution

Limit DC power sinking to 12 W. Additional derating applies to sinking power when operating at an ambient temperature of >45 °C. If the PXI Express chassis has multiple fan speed settings, set the fans to the highest setting.

## Voltage Programming and Measurement Accuracy/Resolution

Table 2. Voltage Programming and Measurement Accuracy/Resolution
Range Resolution (noise limited) Noise (0.1 Hz to 10 Hz, peak to peak), Typical Accuracy (23 °C ±5 °C) ± (% of voltage + offset)[5] Tempco ± (% of voltage + offset)/°C, 0 °C to 55 °C
Tcal ±5 °C[6] Tcal ±1 °C
600 mV 100 nV 2 μV 0.020% + 50 μV 0.017% + 30 μV 0.0005% + 1 μV
6 V 1 μV 6 μV 0.020% + 320 μV 0.017% + 90 μV
20 V 10 μV 20 μV 0.022% + 1 mV 0.017% + 400 μV
200 V 100 μV 200 μV 0.025% + 10 mV 0.020% + 2.5 mV

## Current Programming and Measurement Accuracy/Resolution

Table 3. Current Programming and Measurement Accuracy/Resolution
Range Resolution (noise limited) Noise (0.1 Hz to 10 Hz, peak to peak), Typical Accuracy (23 °C ±5 °C) ± (% of current + offset)[7], [8] Tempco ± (% of current + offset)/°C, 0 °C to 55 °C
Tcal ±5 °C[9] Tcal ±1 °C
10 nA 10 fA 1 pA 0.06% + 6 pA 0.05% + 5 pA 0.0006% + 400 fA
1 μA 100 fA 4 pA 0.03% + 100 pA 0.022% + 40 pA 0.0006% + 4 pA
100 μA 10 pA 200 pA 0.03% + 6 nA 0.022% + 2 nA 0.0006% + 200 pA
1 mA 100 pA 2 nA 0.03% + 60 nA 0.022% + 20 nA 0.0006% + 2 nA
10 mA 1 nA 20 nA 0.03% + 600 nA 0.022% + 200 nA 0.0006% + 20 nA
100 mA 10 nA 200 nA 0.03% + 6 μA 0.022% + 2 μA 0.0006% + 200 nA
1 A 100 nA 2 μA 0.04% + 60 μA 0.035% + 20 μA 0.0006% + 2 μA
3 A[10] 1 μA 20 μA 0.08% + 900 μA 0.075% + 600 μA 0.0018% + 20 μA

## Noise

 Wideband source noise <25 mV peak-to-peak in 20 V range, device configured for normal transient response, 10 Hz to 20 MHz, typical

The following figures illustrate noise as a function of measurement aperture for the PXIe-4135.

Figure 2. Voltage Measurement Noise vs. Measurement Aperture, Nominal
Note

When the aperture time is set to 2 power-line cycles (PLCs), measurement noise differs slightly depending on whether the niDCPower Power Line Frequency property or NIDCPOWER_ATTR_POWER_LINE_FREQUENCY attribute is set to 50 Hz or 60 Hz.

Figure 3. Current Measurement Noise vs. Measurement Aperture, Nominal
Note

When the aperture time is set to 2 power-line cycles (PLCs), measurement noise differs slightly depending on whether the niDCPower Power Line Frequency property or NIDCPOWER_ATTR_POWER_LINE_FREQUENCY attribute is set to 50 Hz or 60 Hz.

Figure 4. Measurement Noise, 10 nA Range, No Load, 0 V, 3 m Cables, Nominal
Figure 5. Measurement Noise, 10 nA Range, 1 GΩ Load, 9 V, 3 m Cables, Nominal
Note

Measurement noise vs. aperture plot measurements were taken with no load and no cabling. When using small aperture times, measurement noise may be impacted by system cabling.

## Sinking Power vs. Ambient Temperature Derating

The following figure illustrates sinking power derating as a function of ambient temperature for the PXIe-4135.

Figure 6. Sinking Power vs. Ambient Temperature Derating

## Output Resistance Programming Accuracy

Table 4. Output Resistance Programming Accuracy
Current Level/Limit Range Programmable Resistance Range, Voltage Mode Programmable Resistance Range, Current Mode Accuracy ± (% of resistance setting), Tcal ±5 °C[11]
10 nA 0 to ±500 MΩ ±500 MΩ to ±infinity 0.03%
1 μA 0 to ±5 MΩ ±5 MΩ to ±infinity
100 μA 0 to ±50 kΩ ±50 kΩ to ±infinity
1 mA 0 to ±5 kΩ ±5 kΩ to ±infinity
10 mA 0 to ±500 Ω ±500 Ω to ±infinity
100 mA 0 to ±50 Ω ±50 Ω to ±infinity
1 A 0 to ±5 Ω ±5 Ω to ±infinity
3 A[12] 0 to ±500 mΩ ±500 mΩ to ±infinity

## Overvoltage Protection

 Accuracy[13] (% of OVP limit + offset) 1% + 200 mV, typical Temperature coefficient (% of OVP limit + offset)/°C 0.01% + 3 mV/°C, typical Measurement location Local sense Maximum OVP limit value 210 V Minimum OVP limit value 2 V

## Extended Range Pulsing [14]

Maximum pulse

Voltage

160 V

Current

3 A

On time[15]

1 ms

Minimum pulse cycle time

5 ms

Energy

200 mJ

Cycle average power

10 W

Duty cycle

5%

## Transient Response and Settling Time

Transient response[16]

3 A to 100 μA ranges

<70 μs, typical

1 μA range[17]

<1 ms, typical

10 nA range[17]

<10 ms, typical

Settling time[18]

Voltage mode, 180 V step, unloaded[19]

<500 μs, typical

Voltage mode, 5 V step or smaller, unloaded[20]

<70 μs, typical

Current mode, full-scale step, 3 A to 100 μA ranges[21]

<50 μs, typical

Current mode, full-scale step, 3 A to 1 μA range[17], [21]

<2 ms, typical

Current mode, full-scale step, 3 A to 10 nA range[17], [21]

<15 ms, typical

The following figures illustrate the effect of the transient response setting on the step response of the PXIe-4135 for different loads.

Figure 7. 1 mA Range, No Load Step Response, Nominal
Figure 8. 1 mA Range, 100 nF Load Step Response, Nominal

Voltage

Device configured for local sense

225 mV per A of output load change (measured between output channel terminals) , typical

Device configured for remote sense

100 μV per A of output load change (measured between sense terminals) , typical

Current, device configured for local or remote sense

Load regulation effect included in current accuracy specifications, typical

## Measurement and Update Timing Characteristics

Available sample rates[22]

(1.8 MS/s)/N where N = 1, 2, 3, … 224, nominal

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[23]

Input trigger to

Source event delay

10 μs, nominal

Source event jitter

1 μs, nominal

Measure event jitter

1 μs, nominal

Pulse timing and accuracy

Minimum pulse on time[24]

50 μs, nominal

Minimum pulse off time[25]

50 μs, nominal

Pulse on time or off time programming resolution

100 ns, nominal

Pulse on time or off time programming accuracy

±5 μs, nominal

Pulse on time or off time jitter

1 μs, nominal

## Remote Sense

 Voltage accuracy Add 3 ppm of voltage range per volt of HI lead drop plus 1 μV per volt of lead drop per Ω of corresponding sense lead resistance to voltage accuracy specifications Maximum sense lead resistance 100 Ω Maximum lead drop per lead 3 V, maximum 202 V between HI and LO terminals
Note

Exceeding the maximum lead drop per lead value may cause the driver to report a sense lead error.

## Safety Interlock

The safety interlock feature is designed to prevent users from coming in contact with hazardous voltage generated by the SMU in systems that implement protective barriers with controlled user access points.

Caution

Hazardous voltages of up to the maximum voltage of the PXIe-4135 may appear at the output terminals if the safety interlock terminal is closed. Open the safety interlock terminal when the output connections are accessible. With the safety interlock terminal open, the output voltage level/limit is limited to ±40 V DC, and protection will be triggered if the voltage measured between the device HI and LO terminals exceeds ±(42 Vpk ±0.4 V).

Caution

Do not apply voltage to the safety interlock connector inputs. The interlock connector is designed to accept passive, normally open contact closure connections only.

Safety interlock terminal open

Output

<±42.4 Vpk

Setpoint

<±40 VDC

Safety interlock terminal closed

Output

Maximum voltage of the device

Setpoint

Maximum selected voltage range

## Examples of Calculating Accuracy Specifications[26]

### Example 1: Calculating 5 °C Accuracy

Calculate the accuracy of 900 nA output in the 1 µA range under the following conditions:

 Ambient temperature 28 °C Internal device temperature within Tcal ±5 °C[27] Self-calibration within the last 24 hours

Solution

Because the device internal temperature is within Tcal ±5 °C and the ambient temperature is within 23 °C ±5 °C, the appropriate accuracy specification is the following value:

0.03% + 200 pA

Calculate the accuracy using the following formula:

$\mathrm{Accuracy}\text{\hspace{0.17em}}=\text{\hspace{0.17em}}900\text{\hspace{0.17em}}\mathrm{nA}*\text{\hspace{0.17em}}0.03%\text{\hspace{0.17em}}+\text{\hspace{0.17em}}200\mathrm{pA}$ $\text{\hspace{0.17em}\hspace{0.17em}}=\text{\hspace{0.17em}}270\mathrm{pA}+\text{\hspace{0.17em}}200\mathrm{pA}$

$=\text{\hspace{0.17em}}470\mathrm{pA}$

Therefore, the actual output is within 470 pA of 900 nA.

### Example 2: Calculating Remote Sense Accuracy

Calculate the remote sense accuracy of 500 mV output in the 600 mV range. Assume the same conditions as in Example 1, with the following differences:

 HI path lead drop 3 V HI sense lead resistance 2 Ω LO path lead drop 2.5 V LO sense lead resistance 1.5 Ω

Solution

Because the device internal temperature is within Tcal ±5 °C and the ambient temperature is within 23 °C ±5 °C, the appropriate accuracy specification is the following value:

0.02% + 100 μV

Because the device is using remote sense, use the following remote sense accuracy specification:

Add 3 ppm of voltage range + 11 μV per volt of HI lead drop plus 1 μV per volt of lead drop per Ω of corresponding sense lead resistance to voltage accuracy specifications.

Calculate the remote sense accuracy using the following formula:

$\mathrm{Accuracy}\text{\hspace{0.17em}}=\text{\hspace{0.17em}}\left(500\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{mV}*\text{\hspace{0.17em}}0.02%\text{\hspace{0.17em}}+\text{\hspace{0.17em}}100\text{\hspace{0.17em}}\mathrm{\mu V}\right)+\text{\hspace{0.17em}}\frac{600\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{mV}*\text{\hspace{0.17em}}3\text{\hspace{0.17em}}\mathrm{ppm}\text{\hspace{0.17em}}+11\text{\hspace{0.17em}}\mathrm{\mu V}}{1\text{\hspace{0.17em}}V\mathrm{of}\text{\hspace{0.17em}}\mathrm{lead}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{drop}}*\text{\hspace{0.17em}}3\text{\hspace{0.17em}}V+\text{\hspace{0.17em}}\frac{1\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mu V}{V*\text{\hspace{0.17em}}\mathrm{\Omega }}*\text{\hspace{0.17em}}3\text{\hspace{0.17em}}V\text{\hspace{0.17em}}*\text{\hspace{0.17em}}2\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{\Omega }+\text{\hspace{0.17em}}\frac{1\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mu V}{V*\text{\hspace{0.17em}}\mathrm{\Omega }}\text{\hspace{0.17em}}\text{\hspace{0.17em}}*\text{\hspace{0.17em}}2.5\text{\hspace{0.17em}}\text{\hspace{0.17em}}V*\text{\hspace{0.17em}}1.5\mathrm{\Omega }\text{\hspace{0.17em}}$ $\text{\hspace{0.17em}\hspace{0.17em}}=\text{\hspace{0.17em}}100\mathrm{\mu V}+\text{\hspace{0.17em}}100\mathrm{\mu V}+\text{\hspace{0.17em}}12.8\mathrm{\mu V}*3+\text{\hspace{0.17em}}6\mathrm{\mu V}+\text{\hspace{0.17em}}3.8\mathrm{\mu V}$ $=\text{\hspace{0.17em}}248.2\mathrm{\mu V}$

Therefore, the actual output is within 248.2 µV of 500 mV.

### Example 3: Calculating Accuracy with Temperature Coefficient

Calculate the accuracy of 900 nA output in the 1 µA range. Assume the same conditions as in Example 1, with the following differences:

 Ambient temperature 15 °C

Solution

Because the device internal temperature is within Tcal ±5 °C, the appropriate accuracy specification is the following value:

0.03% + 200 pA

Because the ambient temperature falls outside of 23 °C ±5 °C, use the following temperature coefficient per °C outside the 23 °C ±5 °C range:

0.0006% + 4 pA

Calculate the accuracy using the following formula:

$\mathrm{Temperature}\mathrm{Variation}\text{\hspace{0.17em}}=\text{\hspace{0.17em}}\left(23\text{\hspace{0.17em}}°C-\text{\hspace{0.17em}}5\text{\hspace{0.17em}}\text{\hspace{0.17em}}°C\right)\text{\hspace{0.17em}}-15°C=\text{\hspace{0.17em}}3\text{\hspace{0.17em}}°C\text{\hspace{0.17em}}$

$\mathrm{Accuracy}\text{\hspace{0.17em}}=\text{\hspace{0.17em}}\left(500\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{nA}\text{\hspace{0.17em}}*\text{\hspace{0.17em}}0.03%\text{\hspace{0.17em}}+\text{\hspace{0.17em}}200\text{\hspace{0.17em}}\mathrm{pA}\right)+\text{\hspace{0.17em}}\frac{900\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{nA}*\text{\hspace{0.17em}}0.0006%\text{\hspace{0.17em}}+4\text{\hspace{0.17em}}pA}{1\text{\hspace{0.17em}}°C\text{\hspace{0.17em}}}*\text{\hspace{0.17em}}3\text{\hspace{0.17em}}\text{\hspace{0.17em}}°C$

$\text{\hspace{0.17em}\hspace{0.17em}}=\text{\hspace{0.17em}}350\text{\hspace{0.17em}}\mathrm{pA}+\text{\hspace{0.17em}}28.2\text{\hspace{0.17em}}\mathrm{pA}$

$=\text{\hspace{0.17em}}378.2\text{\hspace{0.17em}}\mathrm{pA}$

Therefore, the actual output is within 378.2 pA of 900 nA.

## Trigger Characteristics

Input triggers

Types

Start, Source, Sequence Advance, Measure, Pulse

Sources (PXI trigger lines <0...7>)[28]

Polarity

Configurable

Minimum pulse width

100 ns, nominal

Destinations[29] (PXI trigger lines <0...7>)[28]

Polarity

Active high (not configurable)

Pulse width

>200 ns, typical

Output triggers (events)

Types

Source Complete, Sequence Iteration Complete, Sequence Engine Done, Measure Complete, Pulse Complete, Ready for Pulse

Destinations (PXI trigger lines <0...7>)[28]

Polarity

Configurable

Pulse width

Configurable between 250 ns and 1.6 μs, nominal

## Protection

Output channel protection

Overcurrent or overvoltage

Automatic shutdown, output disconnect relay opens

Automatic shutdown, output disconnect relay opens

Overtemperature

Automatic shutdown, output disconnect relay opens

Safety interlock

Disable high voltage output, output disconnect relay opens

## Isolation

Caution

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

Isolation voltage, channel-to-earth ground[30]

Continuous

250 VDC, CAT I

Withstand

1,000 VRMS

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.

Caution

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

## Guard Output Characteristics

Cable guard

Output impedance

3 kΩ, nominal

Offset voltage

1 mV, typical

## Calibration Interval

 Recommended calibration interval 1 year

## Power Requirement

Caution

You can impair the protection provided by the PXIe-4135 if you use it in a manner not described in this document.

 PXI Express power requirement 2.5 A from the 3.3 V rail 2.7 A from the 12 V rail

## Physical Characteristics

 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.), nominal Weight 419 g (14.8 oz) , nominal Front panel connectors 2 × 3 lug triaxial connectors, 1 × 4.08 mm (3 position) combicon Safety interlock connector 3.55 mm (4 position)

## Environment

 Maximum altitude 2,000 m (800 mbar) (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. Meets MIL-PRF-28800F Class 3 low temperature limit and MIL-PRF-28800F Class 2 high temperature limit.) Relative humidity range 10% to 90%, noncondensing (Tested in accordance with IEC 60068-2-56.)[31]

### Storage Environment

 Ambient temperature range -40 °C to 70 °C (Tested in accordance with IEC 60068-2-1 and IEC 60068-2-2. Meets MIL-PRF-28800F Class 3 limits.) Relative humidity range 5% to 95%, noncondensing (Tested in accordance with IEC 60068-2-56.)

## Shock and Vibration

Operating shock

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

Random vibration

Operating

5 Hz to 500 Hz, 0.3 grms (Tested in accordance with IEC 60068-2-64.)

Nonoperating

5 Hz to 500 Hz, 2.4 grms (Tested in accordance with IEC 60068-2-64. Test profile exceeds the requirements of MIL-PRF-28800F, Class 3.)

## Compliance and Certifications

Hazardous Voltage

This icon denotes a warning advising you to take precautions to avoid electrical shock.

### Safety

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 UL and other safety certifications, refer to the product label or the Online Product Certification 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 Online Product Certification 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)

### Online Product Certification

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for this product, visit ni.com/certification, search by model number or product line, and click the appropriate link in the Certification column.

### 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 Minimize Our Environmental Impact 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.

#### Waste Electrical and Electronic Equipment (WEEE)

EU Customers

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）

中国客户

National Instruments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National Instruments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 Voltage levels and limits >|40 VDC| require the safety interlock input to be closed.
• 3 Current is limited to 1 A DC. Higher levels are pulsing only.
• 4 Power limit defined by voltage measured between HI and LO terminals.
• 5 Accuracy is specified for no load output configurations. Refer to Load Regulation and Remote Sense sections for additional accuracy derating and conditions.
• 6 Tcal is the internal device temperature recorded by the PXIe-4135 at the completion of the last self-calibration.
• 7 Relative humidity between 10% and 70%, noncondensing up to 35 °C. Derate max relative humidity 3% per °C for ambient temperatures between 35 °C and 50 °C. From 50 °C to 55 °C, relative humidity between 10% and 25%, noncondensing.
• 8 Add 30 pA to accuracy specifications when operating with relative humidity greater than 50%.
• 9 Tcal is the internal device temperature recorded by the PXIe-4135 at the completion of the last self-calibration.
• 10 3 A range above 1 A is for pulsing only.
• 11 Tcal is the internal device temperature recorded by the PXIe-4135 at the completion of the last self-calibration.
• 12 3 A range above 1 A is for pulsing only.
• 13 Overvoltage protection accuracy is valid with an ambient temperature of 23 °C ± 5 °C and with Tcal ±5 °C. Tcal is the internal device temperature recorded by the PXIe-4135 at the completion of the last self-calibration.
• 14 Extended range pulse currents fall outside DC range limits. In-range pulse currents fall within DC range limits. In-range pulses are not subject to extended range pulsing limitations.
• 15 Pulse on time is measured from the start of the leading edge to the start of the trailing edge.
• 16 Time to recover within 0.1% of voltage range after a load current change from 10% to 90% of range, device configured for fast transient response.
• 17 Measured with guarded load and HI/Sense HI triax cable ≤ 3 m
• 18 Measured as the time to settle to within 0.1% of step amplitude, device configured for fast transient response.
• 19 Current limit set to ≥60 μA and ≥60% of the selected current limit range.
• 20 Current limit set to ≥20 μA and ≥20% of selected current limit range.
• 21 Voltage limit set to ≥2 V, resistive load set to 1 V/selected current range.
• 22 When sourcing while measuring, both the niDCPower Source Delay and niDCPower Aperture Time properties affect the sampling rate. When taking a measure record, only the niDCPower Aperture Time property affects the sampling rate.
• 23 As the source delay is adjusted, maximum source rates vary.
• 24 Pulse on time is measured from the start of the leading edge to the start of the trailing edge.
• 25 Pulses fall inside DC limits. Pulse off time is measured from the start of the trailing edge to the start of a subsequent leading edge.
• 26 Specifications listed in examples are for demonstration purposes only and do not necessarily reflect specifications for this device.
• 27 Tcal is the internal device temperature recorded by the PXIe-4135 at the completion of the last self-calibration.
• 28 Pulse widths and logic levels are compliant with PXI Express Hardware Specification Revision 1.0 ECN 1.
• 29 Input triggers can be re-exported.
• 30 Verified with a 5-second dielectric withstand test.
• 31 Accuracy specifications warranted for relative humidity between 10% and 70%, noncondensing up to 35 °C. Derate max relative humidity 3% per °C for ambient temperatures between 35 °C and 50 °C. From 50 °C to 55 °C, accuracy specifications warranted for relative humidity between 10% and 25%, noncondensing. See Current Programming and Measurement Accuracy/Resolution for humidity performance restrictions. When transitioning a device from a storage or operation environment with relative humidity outside of this range, device should be allowed to stabilize in the lower humidity environment for several hours before use.