NI 6356 X Series Data Acquisition Device Specifications

Analog Input

Number of channels: 8 differential

ADC resolution: 16 bits

DNL: No missing codes guaranteed

INL: Refer to the AI Absolute Accuracy section.

Sample rate:

• Single-channel maximum: 1.25 MS/s
• Minimum: No minimum

Timing resolution: 10 ns

Timing accuracy: 50 ppm of sample rate

Input coupling: DC

Input range: ±1 V, ±2 V, ±5 V, ±10 V

Maximum working voltage for all analog inputs:

• Positive input (AI+): ±11 V for all ranges, Measurement Category I
• Negative input (AI-): ±11 V for all ranges, Measurement Category I

Caution: Do not use for measurements within Categories II, III, and IV.

CMRR (at 60 Hz): 75 dB

Bandwidth: 1 MHz

THD: -80 dBFS

Input impedance:

• Device on (AI+ to AI GND): >100 GΩ in parallel with 100 pF
• Device on (AI- to AI GND): >100 GΩ in parallel with 100 pF
• Device off (AI+ to AI GND): 2 kΩ
• Device off (AI- to AI GND): 2 kΩ

Input bias current: ±10 pA

Crosstalk (at 100 kHz):

• Adjacent channels: -80 dB
• Non-adjacent channels: -100 dB

Input FIFO size:

• PXIe: 8,182 samples shared among channels used
• USB (32 MS): 32 MS shared among channels used
• USB (64 MS): 64 MS shared among channels used

Data transfers:

• PXIe: DMA (scatter-gather), programmed I/O
• USB: USB Signal Stream, programmed I/O

Overvoltage protection for all analog input channels:

• Device on: ±36 V
• Device off: ±15 V

Input current during overvoltage: ±20 mA max/AI pin

Analog Triggers

Number of triggers: 1

Source: AI <0..7>, APFI 0

Functions: Start Trigger, Reference Trigger, Pause Trigger, Sample Clock, Sample Clock Timebase

Source level:

• AI <0..7>: ±Full scale
• APFI 0: ±10 V

Resolution: 16 bits

Modes: Analog edge triggering, analog edge triggering with hysteresis, and analog window triggering

Bandwidth (-3 dB):

• AI <0..7>: 3.4 MHz
• APFI 0: 3.9 MHz

Accuracy: ±1% of range

APFI 0 characteristics:

• Input impedance: 10 kΩ
• Coupling: DC
• Protection, power on: ±30 V
• Protection, power off: ±15 V

AI Absolute Accuracy

Note: For more information about absolute accuracy at full scale, refer to the AI Absolute Accuracy Example section.

Gain tempco: 8 ppm/°C

Reference tempco: 5 ppm/°C

Residual offset error: 15 ppm of range

INL error: 46 ppm of range

Note: Accuracies listed are valid for up to two years from the device external calibration.

AI Absolute Accuracy Equation

AbsoluteAccuracy = Reading · (GainError) + Range · (OffsetError) + NoiseUncertainty

GainError = ResidualGainError + GainTempco · (TempChangeFromLastInternalCal) + ReferenceTempco · (TempChangeFromLastExternalCal)

OffsetError = ResidualOffsetError + OffsetTempco · (TempChangeFromLastInternalCal) + INLError

NoiseUncertainty = (Random Noise · 3) / √10,000 for a coverage factor of 3 and averaging 10,000 points.

AI Absolute Accuracy Example

Absolute accuracy at full scale on the analog input channels is determined using the following assumptions: • TempChangeFromLastExternalCal = 10 °C • TempChangeFromLastInternalCal = 1 °C • number_of_readings = 10,000 • CoverageFactor = 3

For example, on the 10 V range, the absolute accuracy at full scale is as follows:

GainError = 95 ppm + 8 ppm · 1 + 5 ppm · 10 = 153 ppm

OffsetError = 15 ppm + 35 ppm · 1 + 46 ppm = 96 ppm

NoiseUncertainty = (252 μV · 3) / 10,000 = 7.6 μV

AbsoluteAccuracy = 10 V · (GainError) + 10 V · (OffsetError) + NoiseUncertainty = 2,498 μV

Analog Output

Number of channels: 2

DAC resolution: 16 bits

DNL: ±1 LSB, max

Monotonicity: 16 bit guaranteed

Accuracy: Refer to the AO Absolute Accuracy section.

Maximum update rate (simultaneous):

• 1 channel: 3.3 MS/s
• 2 channels: 3.3 MS/s

Minimum update rate: No minimum

Timing accuracy: 50 ppm of sample rate

Timing resolution: 10 ns

Output range: ±10 V, ±5 V, ±external reference on APFI 0

Output coupling: DC

Output impedance: 0.4 Ω

Output current drive: ±5 mA

Overdrive protection: ±25 V

Overdrive current: 10 mA

Power-on state: ±5 mV

Power on/off glitch:

• PXIe: 1.5 V peak for 200 ms
• USB: 1.5 V peak for 200 ms, typical behavior

Output FIFO size: 8,191 samples shared among channels used

Data transfers:

• PXIe: DMA (scatter-gather), programmed I/O
• USB: USB Signal Stream, programmed I/O

AO waveform modes: Non-periodic waveform, periodic waveform regeneration mode from onboard FIFO, periodic waveform regeneration from host buffer including dynamic update

Setting time, full-scale step: 2 μs 15 ppm (1 LSB)

Slew rate: 20 V/μs

Glitch energy at midscale transition: 6 nV · s (±10 V range)

External Reference

APFI 0 characteristics

Input impedance: 10 kΩ

Coupling: DC

Protection, device on: ±30 V

Protection, device off: ±15 V

Range: ±11 V

Slew rate: ±20 V/μs

Figure 1: Analog Output External Reference Bandwidth. A graph illustrating Analog Output External Reference Bandwidth, showing normalized AO amplitude attenuation in decibels (dB) versus frequency in Hertz (Hz), with lines representing different DAC output codes.

AO Absolute Accuracy

Note: Accuracies listed are valid for up to two years from the device external calibration.

Digital I/O/PFI

Static Characteristics

Number of channels: 24 total, 8 (P0.<0..7>), 16 (PFI <0..7>/P1, PFI <8..15>/P2)

Ground reference: D GND

Direction control: Each terminal individually programmable as input or output

Pull-down resistor: 50 kΩ typical, 20 kΩ minimum

Input voltage protection: ±20 V on up to two pins

Caution: Stresses beyond those listed under the Input voltage protection specification may cause permanent damage to the device.

Waveform Characteristics (Port 0 Only)

Terminals used: Port 0 (P0.<0..7>)

Port/sample size: Up to 8 bits

Waveform generation (DO) FIFO: 2,047 samples

Waveform acquisition (DI) FIFO: 255 samples

DI Sample Clock frequency:

• PXIe: 0 to 10 MHz, system and bus activity dependent
• USB: 0 to 1 MHz, system and bus activity dependent

DO Sample Clock frequency:

• PXIe: 0 to 10 MHz (Regenerate from FIFO), 0 to 10 MHz (Streaming from memory)
• USB: 0 to 10 MHz (Regenerate from FIFO), 0 to 1 MHz (Streaming from memory)

Data transfers:

• PXIe: DMA (scatter-gather), programmed I/O
• USB: USB Signal Stream, programmed I/O

Digital line filters settings: 160 ns, 10.24 μs, 5.12 ms, disable

PFI/Port 1/Port 2 Functionality

Functionality: Static digital input, static digital output, timing input, timing output

Timing output sources: Many AI, AO, counter, DI, DO timing signals

Debounce filters settings: 90 ns, 5.12 μs, 2.56 ms, custom interval, disable; programmable high and low transitions; selectable per input

Recommended Operating Conditions

Input high voltage (VIH): Minimum 2.2 V, Maximum 5.25 V

Input low voltage (VIL): Minimum 0 V, Maximum 0.8 V

Output high current (IOH):

• P0.<0..7>: -24 mA maximum
• PFI <0..15>/P1/P2: -16 mA maximum

Output low current (IOL):

• P0.<0..7>: 24 mA maximum
• PFI <0..15>/P1/P2: 16 mA maximum

Digital I/O Characteristics

Positive-going threshold (V_T+): 2.2 V maximum

Negative-going threshold (V_T-): 0.8 V minimum

Delta V_T Hysteresis (V_T+ - V_T-): 0.2 V minimum

IIL input low current (VIN = 0 V): -10 μA maximum

IIH input high current (VIN = 5 V): 250 μA maximum

Figure 2. P0.<0..7>: IOH versus VOH. Graph showing Output High Current (IOH) in mA versus Output High Voltage (VOH) in V for P0.<0..7>, with data points shown for different operating temperatures (0°C, 25°C, 55°C) and supply voltages.

Figure 3. P0.<0..7>: IOL versus VOL. Graph showing Output Low Current (IOL) in mA versus Output Low Voltage (VOL) in V for P0.<0..7>, with data points shown for different operating temperatures (0°C, 25°C, 55°C) and supply voltages.

Figure 4. PFI <0..15>/P1/P2: IOH versus VOH. Graph showing Output High Current (IOH) in mA versus Output High Voltage (VOH) in V for PFI <0..15>/P1/P2, with data points shown for different operating temperatures (0°C, 25°C, 55°C) and supply voltages.

Figure 5. PFI <0..15>/P1/P2: IOL versus VOL. Graph showing Output Low Current (IOL) in mA versus Output Low Voltage (VOL) in V for PFI <0..15>/P1/P2, with data points shown for different operating temperatures (0°C, 25°C, 55°C) and supply voltages.

General-Purpose Counters

Number of counters/timers: 4

Resolution: 32 bits

Counter measurements: Edge counting, pulse, pulse width, semi-period, period, two-edge separation

Position measurements: XI, X2, X4 quadrature encoding with Channel Z reloading; two-pulse encoding

Output applications: Pulse, pulse train with dynamic updates, frequency division, equivalent time sampling

Internal base clocks: 100 MHz, 20 MHz, 100 kHz

External base clock frequency:

• PXIe: 0 MHz to 25 MHz; 0 MHz to 100 MHz on PXIe_DSTAR<A,B>
• USB: 0 MHz to 25 MHz

Base clock accuracy: 50 ppm

Inputs: Gate, Source, HW_Arm, Aux, A, B, Z, Up_Down, Sample Clock Routing options for inputs

PXIe Input Sources: Any PFI, PXIe_DSTAR<A,B>, PXI_TRIG, PXI_STAR, analog trigger, many internal signals

USB Input Sources: Any PFI, analog trigger, many internal signals

FIFO: 127 samples per counter

Data transfers:

• PXIe: Dedicated scatter-gather DMA controller for each counter/timer, programmed I/O
• USB: USB Signal Stream, programmed I/O

Frequency Generator

Number of channels: 1

Base clocks: 20 MHz, 10 MHz, 100 kHz

Divisors: 1 to 16

Base clock accuracy: 50 ppm

Output can be available on any PFI terminal.

Phase-Locked Loop (PLL)

Number of PLLs: 1

Output of PLL: 100 MHz Timebase; other signals derived from 100 MHz Timebase including 20 MHz and 100 kHz Timebases

External Digital Triggers

Source:

• PXIe: Any PFI, PXIe_DSTAR<A,B>, PXI_TRIG, PXI_STAR
• USB: Any PFI

Polarity: Software-selectable for most signals

Analog input function: Start Trigger, Reference Trigger, Pause Trigger, Sample Clock, Sample Clock Timebase

Analog output function: Start Trigger, Pause Trigger, Sample Clock, Sample Clock Timebase

Counter/timer functions: Gate, Source, HW_Arm, Aux, A, B, Z, Up_Down, Sample Clock

Digital waveform generation (DO) function: Start Trigger, Pause Trigger, Sample Clock, Sample Clock Timebase

Digital waveform acquisition (DI) function: Start Trigger, Reference Trigger, Pause Trigger, Sample Clock, Sample Clock Timebase

Device-to-Device Trigger Bus

Input source:

• PXIe: PXI_TRIG <0..7>, PXI_STAR, PXIe_DSTAR<A,B>
• USB: None

Output destination:

• PXIe: PXI_TRIG <0..7>, PXIe_DSTARC
• USB: None

Output selections: 10 MHz Clock, frequency generator output, many internal signals

Debounce filters settings: 90 ns, 5.12 μs, 2.56 ms, custom interval, disable; programmable high and low transitions; selectable per input

Bus Interface

PXIe

Form factor: x1 PXI Express peripheral module, specification rev 1.0 compliant

Slot compatibility: x1 and x4 PXI Express or PXI Express hybrid slots

DMA Channels: 8, can be used for analog input, analog output, digital input, digital output, counter/timer 0, counter/timer 1, counter/timer 2, counter/timer 3

All PXIe devices may be installed in PXI Express slots or PXI Express hybrid slots.

USB

USB compatibility: USB 2.0 Hi-Speed or full-speed

USB Signal Stream: 8, can be used for analog input, analog output, digital input, digital output, counter/timer 0, counter/timer 1, counter/timer 2, counter/timer 3

Power Requirements

Caution: The protection provided by the device can be impaired if the device is used in a manner not described in the X Series User Manual.

PXIe:

• +3.3 V: 4.7 W
• +12 V: 15.4 W

USB:

• Power supply requirements: 11 to 30 VDC, 30 W, 2 positions 3.5 mm pitch pluggable screw terminal with screw locks similar to Phoenix Contact MC 1,5/2-STF-3,5 BK
• Power input mating connector: Phoenix Contact MC 1,5/2-GF-3,5 BK or equivalent

Caution: The USB device must be powered with an NI offered AC adapter or a National Electric Code (NEC) Class 2 DC source that meets the power requirements for the device and has the appropriate safety certification marks for country of use.

Current Limits

Note: Exceeding the current limits may cause unpredictable device behavior.

• PXIe, +5 V terminal (connector 0): 1 A max
• USB, +5 V terminal: 1 A max

Note: Has a self-resetting fuse that opens when current exceeds this specification.

Physical Characteristics

PXIe printed circuit board: Standard 3U PXI dimensions

USB enclosure dimensions (includes connectors):

• Screw terminal: 26.4 × 17.3 × 3.6 cm (10.4 × 6.8 × 1.4 in.)
• BNC: 20.3 × 18.5 × 6.8 cm (8.0 × 7.3 × 2.7 in.)

Weight:

• PXIe: 168 g (5.9 oz)
• USB Screw Terminal: 1.428 kg (3 lb 3.4 oz)
• USB BNC: 1.536 kg (3 lb 6.2 oz)

I/O connector:

• PXIe: 1 68-pin VHDCI
• USB Screw Terminal: 64 screw terminals
• USB BNC: 20 BNCs and 30 screw terminals

USB screw terminal/BNCs screw: 16-24 AWG terminal wiring

Calibration

Recommended warm-up time: 15 minutes

Calibration interval: 2 years

Maximum Working Voltage

Maximum working voltage refers to the signal voltage plus the common-mode voltage.

Channel to earth: 11 V, Measurement Category I

Caution: Do not use for measurements within Categories II, III, or IV.

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 to 500 Hz, 0.3 grms
• Non-operating: 5 to 500 Hz, 2.4 grms (Tested in accordance with IEC-60068-2-64. Nonoperating test profile exceeds the requirements of MIL-PRF-28800F, Class 3.)

Environmental

Operating temperature:

• PXIe: 0 to 55 °C
• USB: 0 to 45 °C

Storage temperature: -40 to 70 °C

Operating humidity: 10 to 90% RH, noncondensing

Storage humidity: 5 to 95% RH, noncondensing

Pollution Degree: 2

Maximum altitude: 2,000 m

Indoor use only.

Safety

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

• IEC 61010-1, EN 61010-1
• UL 61010-1, CSA 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
• AS/NZS CISPR 11: Group 1, 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 and certifications, 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

National Instruments 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.

RoHS

National Instruments complies with RoHS regulations. For information about China RoHS compliance, go to ni.com/environment/rohs_china.

Device Pinouts

Figure 6. NI PXIe-6356 Pinout. A diagram detailing the pinout for the NI PXIe-6356, showing a 68-pin VHDCI connector with terminals 1 through 68, mapping each terminal to analog input (AI), analog output (AO), digital I/O (P0.x, PFI/P1.x, PFI/P2.x), ground (GND), and no connect (NC) signals.

Figure 7. NI USB-6356 Screw Terminal Pinout. A diagram detailing the pinout for the NI USB-6356 with screw terminals, showing terminals 1 through 96, mapping each terminal to analog input (AI), analog output (AO), digital I/O (P0.x, PFI/P1.x, PFI/P2.x), ground (GND), power (+5V), and no connect (NC) signals. It also indicates the APFI 0 and CHS GND connections.

Figure 8. NI USB-6356 BNC Front Panel and Pinout. A diagram showing the front panel and pinout for the NI USB-6356 with BNC connectors. It illustrates analog input (AI) and analog output (AO) connections on the left, and digital I/O (PFI/P1.x, P0.x, PFI/P2.x) and timing signals on the right. It also indicates USER 1, USER 2, GND, +5V, AI GND, NC, and APFI 0 connections.

Legal and Compliance Information

Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for information on National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products/technology, refer to the appropriate location: Help→Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. You can find information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product. Refer to the Export Compliance Information at ni.com/legal/export-compliance for the National Instruments global trade compliance policy and how to obtain relevant HTS codes, ECCNs, and other import/export data.

NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS. U.S. Government Customers: The data contained in this manual was developed at private expense and is subject to the applicable limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015.

© 2015 National Instruments. All rights reserved.