型号: PCIe-6346

产品编号: 785813-01

SPECIFICATIONS PCIe-6346

500 kS/s/ch, 8 simultaneous AI, 24 DIO, 2 AO Multifunction I/O Device

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 Typical unless otherwise noted. Conditions

Specifications are valid for 25 °C unless otherwise noted.

Analog Input

Note Floating inputs can cause unnecessary power consumption and higher operating temperatures. NI recommends connecting unused analog input channels to

AIGND.

Number of channels                                           8 differential

Sample rate (simultaneous sampling on all channels sampled)

Timing accuracy                                                50 ppm of sample rate

Maximum working voltage for all analog inputs (AI±)

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

CMRR (at 60 Hz)                                               80 dB

Notice Exceeding overvoltage specifications may result in data corruption on nonovervoltaged channels.

Analog Triggers

Number of triggers                                           1

AI Absolute Accuracy

Table 1. AI Absolute Accuracy

Table 1. AI Absolute Accuracy (Continued)

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

Gain tempco                                                      16.7 ppm/°C

Note Accuracies listed are warranted for up to one year from the device external calibration when the device is within 10 °C of the external calibration temperature and 1 °C of the last self calibration, when averaging 10,000 DC samples. Other accuracies may be calculated for different temperatures and sample sizes using the given equations.

AI Absolute Accuracy Equation

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

GainError = ResidualGainError + GainTempco · (TempChangeFromLastInternalCal) +

ReferenceTempco · (TempChangeFromLastExternalCal)

OffsetError = ResidualOffsetError + OffsetTempco · (TempChangeFromLastInternalCal) + INLError

                                         Random Noise ⋅   3

NoiseUncertainty =  for a coverage factor of 3 σ and averaging 10, 000 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 σ

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

GainError = 115 ppm + 16.7 ppm · 1 + 5 ppm · 10 = 181.7 ppm OffsetError = 12 ppm + 2 ppm ·1 + 126 ppm = 140 ppm

Noise Uncertainty =  = 8 µV

AbsoluteAccuracy = 10 V · (GainError) + 10 V · (OffsetError) + NoiseUncertainty = 3225 µV

Analog Output

Settling time, full-scale step,                               6 µs

15 ppm (1 LSB)

AO Absolute Accuracy

Accuracies listed are warranted for up to one year from the device external calibration when the device is within 10 °C of the external calibration temperature and 1 °C of the last self calibration.

Table 2. AO Absolute Accuracy

AO Absolute Accuracy Equation

AbsoluteAccuracy = OutputValue ⋅ (GainError) + Range ⋅ (OffsetError)

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

OffsetError = ResidualOffsetError + OffsetTempco ⋅ (TempChangeFromLastInternalCal) + INLError

Digital I/O/PFI

      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>)

PFI/Port 1/Port 2 Functionality

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

Recommended Operating Conditions

Output low current (I_OL)

Figure 3. PFI <0..15>/P1/P2: I_OH versus V_OH

Figure 4. PFI <0..15>/P1/P2: I_OL versus V_OL

General-Purpose Counters

Frequency Generator

Output can be available on any PFI or RTSI terminal.

Phase-Locked Loop (PLL)

Table 3. Reference Clock Locking Frequencies

Output of PLL                                                 100 MHz Timebase; other signals derived from

100 MHz Timebase including 20 MHz and

100 kHz Timebases

External Digital Triggers

Device-to-Device Trigger Bus

Output selections                                               10 MHz Clock, frequency generator output;

many internal signals

Power Requirements

Caution The protection provided by the PCIe-6346 can be impaired if it is used in a manner not described in the user documentation.

Attention La protection apportée par le PCIe-6346 risque d'être endommagée s'il est utilisé d'une autre façon que celle décrite dans la documentation utilisateur.

+3.3 V                                                             2.1 W

P0/PFI/P1/P2 and +5 V terminals  1.2 A, maximum combined

Physical Characteristics

Note For more information about the connectors used for DAQ devices, refer to the document, NI DAQ Device Custom Cables, Replacement Connectors, and Screws, by going to ni.com/info and entering the Info Code rdspmb.

Calibration

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 connect the PCIe-6346 to signals or use for measurements within Measurement Categories II, III, or IV.

Attention Ne connectez pas le PCIe-6346 à des signaux et ne l'utilisez pas pour effectuer des mesures dans les catégories de mesure II, III ou IV.

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.

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

Environmental Characteristics

Humidity

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

PCIe-6346 Device Pinout

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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.

© 2018 National Instruments. All rights reserved.

377315A-01    July 2, 2018

[1] Some motherboard reserve the x16 slot for graphics use. For PCI Express guidelines, refer to ni.com/pciexpress.

[2] For PCI Express adapter cards with integrated air movers, NI defines the local operational ambient environment to be at the fan inlet. For cards without integrated air movers, NI defines the local operational ambient environment to be 25 mm (1 in.) upstream of the leading edge of the card. For more information about the local operational ambient environment definition for PCI Express adapter cards, visit ni.com/info and enter the Info Code pcielocalambient.