型号: PXI-6280

产品编号: 779120-01

DEVICE SPECIFICATIONS NI 6280






M Series Data Acquisition: 18-Bit, 500 kS/s, 16 AI, 24 DIO


The following specifications are typical at 25 °C, unless otherwise noted. For more information about the NI 6280, refer to the M Series User Manual available at ni.com/ manuals.

Analog Input

Number   of channels

8 differential or 16 single ended

ADC   resolution

18 bits

DNL

No missing codes guaranteed

INL

Refer to the AI Absolute Accuracy section

Sample   rate


Single   channel maximum

625 kS/s

Multichannel maximum (aggregate)

500 kS/s

Minimum

No minimum

Timing   accuracy

50 ppm of sample rate

Timing   resolution

50 ns

Input   coupling

DC

Input   range

±0.1 V,   ±0.2 V, ±0.5 V, ±1 V, ±2 V, ±5 V,

±10 V

Maximum   working voltage for analog inputs (signal + common mode)

±11 V of AI GND

CMRR (DC   to 60 Hz)

110 dB

Input   impedance


Device   on


AI+ to   AI GND

>10 GΩ in parallel with 100 pF

AI- to   AI GND

>10 GΩ in parallel with 100 pF

Device off

AI+ to   AI GND

820 Ω

AI- to   AI GND

820 Ω

Input   bias current

±100 pA

Crosstalk   (at 100 kHz)


Adjacent   channels

-75 dB

Non-adjacent   channels

-95 dB

Small   signal bandwidth (-3 dB)

750 kHz filter off, 40 kHz filter on

Input   FIFO size

2,047 samples

Scan   list memory

4,095 entries

Data   transfers

DMA   (scatter-gather), interrupts, programmed I/O

Overvoltage protection for all analog input and sense channels

Table 1. Settling Time for Multichannel Measurements

Range

Filter   Off ±15 ppm of

Step (±4 LSB for

Full-Scale Step)

Filter   Off ±4 ppm of

Step (±1 LSB for

Full-Scale Step)

Filter   On ±4 ppm of

Step (±1 LSB for

Full-Scale Step)

±5 V, ±10 V

2 μs

8 μs

50 μs

±0.5 V, ±1 V, ±2 V

2.5 μs

8 μs

50 μs

±0.1 V, ±0.2 V

3 μs

8 μs

50 μs

Typical Performance Graphs

Figure 1. AI Settling Error versus Time for Different Source Impedances

Figure 2. AI Small Signal Bandwidth

Figure 3. AI CMRR

AI Absolute Accuracy

AI Absolute Accuracy (Filter On)

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

Table 2. AI Absolute Accuracy (Filter On)

Nominal

Range

Positive

Full

Scale

Nominal Range

Negative

Full

Scale

Residual

Gain

Error

(ppm   of

Reading)

Residual

Offset

Error

(ppm   of

Range)

Offset

Tempco

(ppm   of

Range/°C)

Random

Noise,   σ

(μVrms)

Absolute

Accuracy at   Full

Scale

(μV)

Sensitivity

(μV)

10

-10

40

8

11

60

980

24

5

-5

45

8

11

30

510

12

2

-2

45

8

13

12

210

4.8

1

-1

55

15

15

7

120

2.8

0.5

-0.5

55

30

20

4

70

1.6

0.2

-0.2

75

45

35

3

39

1.2

0.1

-0.1

120

60

60

2

28

0.8

Note Sensitivity is the smallest voltage change that can be detected. It is a function of noise.

Gain tempco                                                    17 ppm/°C

Reference   tempco

1 ppm/°C

INL error

10 ppm of range

AI Absolute Accuracy (Filter Off)

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

Table 3. AI Absolute Accuracy (Filter Off)

Nominal

Range

Positive

Full

Scale

Nominal Range

Negative

Full

Scale

Residual

Gain

Error

(ppm   of

Reading)

Residual

Offset

Error

(ppm   of

Range)

Offset

Tempco

(ppm   of

Range/°C)

Random

Noise,   σ

(μVrms)

Absolute

Accuracy at   Full

Scale

(μV)

Sensitivity

(μV)

10

-10

45

10

11

70

1,050

28.0

5

-5

50

10

11

35

550

14.0

2

-2

50

10

13

15

230

6.0

1

-1

60

17

15

12

130

4.8

0.5

-0.5

60

32

20

10

80

4.0

0.2

-0.2

80

47

35

9

43

3.6

0.1

-0.1

120

62

60

9

31

3.6

Note Sensitivity is the smallest voltage change that can be detected. It is a function of noise.

Gain tempco                                                    17 ppm/°C

Reference   tempco

1 ppm/°C

INL error

10 ppm of range

AI Absolute Accuracy Equation

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

GainError = ResidualAIGainError + GainTempco · (TempChangeFromLastInternalCal)

+ ReferenceTempco · (TempChangeFromLastExternalCal)

OffsetError = ResidualAIOffsetError + OffsetTempco ·

(TempChangeFromLastInternalCal) + INLError

Random Noise ⋅ 3

NoiseUncertainty =  for a coverage factor of 3 σ and averaging

100 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 = 100

•         CoverageFactor = 3 σ

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

GainError = 40 ppm + 17 ppm · 1 + 1 ppm · 10 = 67 ppm

OffsetError = 8 ppm + 11 ppm · 1 + 10 ppm = 29 ppm

NoiseUncertainty =  = 18 µV

AbsoluteAccuracy = 10 V · (GainError) + 10 V · (OffsetError) + NoiseUncertainty = 980 µV Analog Triggers

Number of triggers                                             1

Source

AI <0..15>, APFI 0

Functions

Start   Trigger, Reference Trigger,

Pause   Trigger, Sample Clock, Convert Clock,

Sample Clock Timebase

Source   level


AI   <0..15>

±Full scale

APFI 0

±10 V

Resolution

10 bits, 1 in 1,024

Modes

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

Bandwidth   (-3 dB)


AI   <0..15>

700 kHz filter off, 40 kHz filter on

APFI 0

5 MHz

Accuracy

±1%

APFI 0 characteristics

Input   impedance

10 kΩ

Coupling

DC

Protection,   power on

±30 V

Protection,   power off

±15 V

Digital I/O/PFI


Static   Characteristics

Number   of channels

24 total,   8 (P0.<0..7>),

16 (PFI <0..7>/P1, PFI <8..15>/P2)

I/O type

5 V TTL/CMOS compatible

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[1]

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

2,047 samples

DI   Sample Clock frequency

0 MHz to 10 MHz, system and bus activity dependent

DO   Sample Clock frequency


Regenerate   from FIFO

0 MHz to 10 MHz

Streaming   from memory

0 MHz to 10 MHz, system and bus activity dependent

Data transfers

DMA (scatter-gather),   interrupts, programmed I/O

or DO Sample Clock source[2]

Any PFI,   RTSI, AI Sample or Convert Clock,

Ctr n Internal Output,   and many other signals

PFI/Port 1/Port 2 Functionality

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

Timing   output sources

Many AI, counter, DI, DO timing signals

Debounce   filter settings

125 ns, 6.425 µs, 2.56 ms, disable; high and low transitions;   selectable per input

Recommended Operating Conditions

Level

Minimum

Maximum

Input high voltage (VIH)

2.2 V

5.25 V

Input low voltage (VIL)

0 V

0.8 V

Output high current (IOH) P0.<0..7>

—

-24 mA

Output high current (IOH) PFI <0..15>/P1/P2

—

-16 mA

Output low current (IOL) P0.<0..7>

—

24 mA

Output low current (IOL) PFI <0..15>/P1/P2

—

16 mA

Electrical Characteristics

Level

Minimum

Maximum

Positive-going threshold (VT+)

—

2.2 V

Negative-going threshold (VT-)

0.8 V

—

Delta VT hystersis (VT+ - VT-)

0.2 V

—

IIL input low current (Vin = 0 V)

—

-10 µA

IIH input high current (Vin = 5 V)

—

250 µA

Digital I/O Characteristics

Figure 4. Digital I/O (P0.<0..7>): Ioh versus Voh

Figure 5. Digital I/O (PFI <0..15>/P1/P2): Ioh versus Voh

Figure 6. Digital I/O (P0.<0..7>): Iol versus Vol

Figure 7. Digital I/O (PFI <0..15>/P1/P2): Iol versus Vol

General-Purpose Counters/Timers

Number of   counter/timers

2

Resolution

32 bits

Counter   measurements

Edge counting, pulse, semi-period, period, two-edge separation

Position   measurements

X1, 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                                          80 MHz, 20 MHz, 0.1 MHz

External   base clock frequency

0 MHz to 20 MHz

Base   clock accuracy

50 ppm

Inputs

Gate,   Source, HW_Arm, Aux, A, B, Z,

Up_Down

Routing   options for inputs

Any PFI, RTSI, PXI_TRIG, PXI_STAR, analog trigger, many internal   signals

FIFO

2 samples

Data   transfers

Dedicated scatter-gather DMA controller for each counter/timer;   interrupts;

programmed I/O

Frequency   Generator


Number   of channels

1

Base   clocks

10 MHz, 100 kHz

Divisors

1 to 16

Base   clock accuracy

50 ppm

Output can be available on any output PFI or RTSI terminal.

Phase-Locked Loop (PLL)

Number of   PLLs

1

Reference   signal

PXI_STAR, PXI_CLK10, RTSI <0..7>

Output of   PLL

80 MHz   Timebase; other signals derived from

80 MHz   Timebase including 20 MHz and

100 kHz Timebases

External Digital Triggers

Source

Any PFI, RTSI, PXI_TRIG, PXI_STAR

Polarity

Software-selectable for most signals

Analog   input function

Start   Trigger, Reference Trigger,

Pause   Trigger, Sample Clock, Convert Clock,

Sample Clock Timebase

Counter/timer function                                       Gate, Source, HW_Arm, Aux, A, B, Z,

Up_Down

Digital   waveform generation (DO) function

Sample Clock

Digital   waveform acquisition (DI) function

Sample Clock

Device-to-Device Trigger Bus

PCI                                                                    RTSI <0..7>[3]

PXI

PXI_TRIG <0..7>, PXI_STAR

Output   selections

10 MHz Clock, frequency generator output, many internal signals

Debounce   filter settings

125 ns, 6.425 μs, 2.56 ms, disable; high and low transitions;   selectable per input

Bus Interface


PCI/PXI

3.3 V or 5 V signal environment

DMA   channels

6, can be used for analog input, digital input, digital output,   counter/timer 0, counter/timer 1

The PXI device supports one of the following features:

•         May be installed in PXI Express hybrid slots

•         Or, may be used to control SCXI in PXI/SCXI combo chassis

Table 4. PXI/SCXI Combo and PXI Express Chassis Compatibility

M   Series Part Number

SCXI Control in   PXI/SCXI Combo Chassis

PXI Express   Hybrid Slot Compatible

 

191501C-04

 

No

 

Yes

191501A-0x/191501B-0x

Yes

No

Power Requirements

Current draw from bus during no-load condition[4]

+5 V

0.03 A

+3.3 V

0.78 A

+12 V

0.40 A

-12 V

0.06 A

Current draw from bus during AI overvoltage condition4

+5 V

0.03 A

+3.3 V

1.26 A

+12 V

0.43 A

-12 V

0.06 A

Current Limits


Caution Exceeding the current limits may cause unpredictable behavior by the device and/or PC/chassis.

PCI, +5 V terminal                                           1 A maximum[5]

PXI


+5 V   terminal

1 A maximum5

P0/PFI/P1/P2   and +5 V terminals combined

2 A maximum

Physical Characteristics

Dimensions


PCI   printed circuit board

10.6 cm × 15.5 cm (4.2 in. × 6.1 in.)

PXI   printed circuit board

Standard 3U PXI

Weight


PCI

151 g (5.3 oz)

PXI

218 g (7.7 oz)

I/O connector                                                     1 68-pin VHDCI

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

Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated lowvoltage sources, and electronics.

Caution Do not use for measurements within Categories 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.

Environmental

Operating   temperature

0 ºC to 55 ºC

Storage   temperature

-20 ºC to 70 ºC

Humidity

10% RH to 90% RH, noncondensing

Maximum   altitude

2,000 m

Pollution   Degree (indoor use only)

2

Indoor use only.

Shock and Vibration (PXI Only)

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, 0.3 grms

Nonoperating

5 Hz 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.)

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 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 and certifications, and additional information, refer to the Online Product Certification section.

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)

•         2011/65/EU; Restriction of Hazardous Substances (RoHS)

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.)

Device Pinout

Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for information on NI trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering NI 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 NI 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—2016 National Instruments. All rights reserved.

375217C-01     Jun16


[1] Stresses beyond those listed under Input voltage protection may cause permanent damage to the device.

[2] The digital subsystem does not have its own dedicated internal timing engine. Therefore, a sample clock must be provided from another subsystem on the device or an external source.

[3] In other sections of this document, RTSI refers to RTSI <0..7> for the PCI devices or PXI_TRIG <0..7> for PXI devices.

[4] Does not include P0/PFI/P1/P2 and +5 V terminals.

[5] Older revisions have a self-resetting fuse that opens when current exceeds this specification. Newer revisions have a traditional fuse that opens when current exceeds this specification. This fuse is not customer-replaceable; if the fuse permanently opens, return the device to NI for repair.