Table Of Contents

PXIe-6571 Specifications

Version:
    Last Modified: June 6, 2018

    These specifications apply to the PXIe-6571. When using the PXIe-6571 in the Semiconductor Test System, refer to the Semiconductor Test System Specifications.

    Definitions

    Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty. Warranted specifications account for measurement uncertainties, temperature drift, and aging. Warranted specifications are ensured by design or verified during production and calibration.

    The following characteristic specifications 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 Nominal unless otherwise noted.

    Conditions

    Specifications are valid under the following conditions unless otherwise noted.

    • Operating temperature of 0 °C to 40 °C
    • Chassis with 82 W slot cooling capacity
    • Operating temperature within ±5 ºC of the last self-calibration temperature [1]
    • Recommended calibration interval of 1 year. The PXIe-6571 will not meet specifications unless operated within the recommended calibration interval.
    • DUT Ground Sense (DGS) same potential as the Ground (GND) pins
    • 30-minute warmup time before operation
    spd-note-note
    Note  

    When the pin electronics on the PXIe-6571 are in the disconnect state, some I/O protection and sensing circuitry remain connected. Do not subject the PXIe-6571 to voltages beyond the supported measurement range.

    General

    Channel count

    32

    Multi-site resources per instrument

    8

    System channel count[2]

    512

    Large Vector Memory (LVM)

    128M vectors

    History RAM (HRAM)

    (8,192/N sites)-1 cycles

    Maximum allowable offset (DGS minus GND)

    ±300 mV

    Supported measurement range[3]

    -2 V to 7 V[4]

    Timing

    Vector Timing

    Maximum vector rate

    100 MHz

    Vector period range

    10 ns to 40 µs (100 MHz to 25 kHz)

    Vector period resolution

    38 fs

    Timing control

    Vector period

    Vector-by-vector on the fly

    Edge timing

    Per channel, vector-by-vector on the fly

    Drive formats

    Per channel, vector-by-vector on the fly

    Clocking

    Master clock source

    PXIe_CLK100[5]

    Sequencer clock domains

    One (independent sequencer clock domains on a single instrument not supported)

    Drive and Compare Formats

    Drive formats[6]

    100 MHz maximum vector rate

    Non-Return (NR), Return to Low (RL), Return to High (RH)

    50 MHz maximum vector rate

    Surround by Complement (SBC)[7]

    Compare formats

    Edge strobe

    Edge Multipliers[6]

    1x, 2x

    Figure 1. Drive Formats
    Figure 2. 2x Mode Drive Formats

    Pin Data States

    Pin States

    • 0 — Drive zero.
    • 1 — Drive one.
    • L — Compare low.
    • H — Compare high.
    • X — Do not drive; mask compare.
    • M — Compare midband, not high or low.
    • V — Compare high or low, not midband; store results from capture functionality if configured.
    • D — Drive data from source functionality if configured.
    • E — Expect data from source functionality if configured.
    • - — Repeat previous cycle. Do not use a dash (-) for the pin state on the first vector of a pattern file unless the file is used only as a target of a jump or call operation.
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    Note  

    Termination mode settings affect the termination applied to all non-driving pin states. Non-drive states include L, H, M, V, X, E, and potentially -. Refer to the Programmable input termination mode specification for more information.

    Edge Timing

    Edge Types

    Drive edges

    6; drive on, drive data, drive return,

    drive data 2, drive return 2, drive off

    Compare edge

    2; strobe, strobe 2

    Number of time sets[8]

    31

    Edge Generation Timing

    Edge placement range

    Minimum

    Start of vector period (0 ns)

    Maximum

    5 vector periods or 40 µs, whichever is smaller

    Minimum required edge separation

    Between any driven data change

    3.75 ns

    Between any Drive On and Drive Off edges

    5 ns

    Between Compare Strobes

    5 ns

    Edge placement resolution

    39.0625 ps

    Edge placement accuracy[9]

    Drive

    Edge Multiplier = 1x

    ±500 ps, warranted

    Edge Multiplier = 2x

    Bit rate ≤ 200 Mbps: ±500 ps, typical

    Edge Multiplier = 2x

    Bit rate ≤ 266 Mbps: ±600 ps, typical

    Compare

    Edge Multiplier = 1x

    ±500 ps, warranted

    Edge Multiplier = 2x

    Bit rate ≤ 100 Mbps: ±500 ps, typical

    Edge Multiplier = 2x

    Bit rate ≤ 133 Mbps: ±700 ps, typical

    Overall timing accuracy[9]

    Edge Multiplier = 1x

    ±1.5 ns, warranted

    Edge Multiplier = 2x

    Bit rate ≤ 200 Mbps: ±1.5 ns, typical

    Edge Multiplier = 2x

    Bit rate ≤ 266 Mbps: ±1.8 ns, typical

    TDR deskew adjustment resolution

    39.0625 ps

    Driver, Comparator, Load

    Driver

    Signal type

    Single-ended, referenced to the DGS pin when connected. Otherwise referenced to GND.

    Programmable levels

    VIH, VIL, VTERM

    Voltage levels

    Range (VIH, VIL, VTERM)

    -2 V to 6 V

    Minimum swing (VIH minus VIL)

    400 mV, into a 1 MΩ load

    Resolution (VIH, VIL, VTERM)

    122 µV

    Accuracy (VIH, VIL, VTERM)

    ±15 mV, 1 MΩ load, warranted

    Maximum DC drive current

    ±32 mA

    Output impedance

    50 Ω

    Rise/fall time, 20% to 80%

    1.2 ns, up to 5 V

    Comparator

    Signal type

    Single-ended, referenced to the DGS pin when connected. Otherwise referenced to GND.

    Programmable levels

    VOH, VOL

    Voltage levels

    Range (VOH, VOL)

    -2 V to 6 V

    Resolution (VOH, VOL)

    122 µV

    Accuracy (VOH, VOL)

    ±25 mV, from -1.5 V to 5.8 V, warranted

    Programmable input termination modes

    High Z, 50 Ω to VTERM, Active Load

    Leakage current

    <15 nA, in the High Z termination mode

    Active Load

    Programmable levels

    IOH, IOL

    Commutating voltage (VCOM)

    Range

    -2 V to 6 V

    Resolution

    122 µV

    Current levels

    Range

    1.5 mA to 16 mA

    Resolution

    488 nA

    Accuracy

    1 mA, 3 V over/under drive, typical

    PPMU

    PPMU Force Voltage

    Signal type

    Single-ended, referenced to the DGS pin when connected. Otherwise referenced to GND.

    Voltage levels

    Range

    -2 V to 6 V

    6 V to 7 V in Extended Voltage Range[10]

    Resolution

    122 μV

    Accuracy

    ±15 mV, 1 MΩ load, from -2 V to 6 V, warranted

    ±50 mV, 1 MΩ load, from 6 V to 7 V, typical[10]

    PPMU Measure Voltage

    Signal type

    Single-ended, referenced to the DGS pin when connected. Otherwise referenced to GND.

    Voltage levels

    Range

    -2 V to 6 V

    Resolution

    228 μV

    Accuracy

    ±5 mV, warranted

    PPMU Force Current

    Table 1. PPMU Force Current Accuracy
    Range Resolution Accuracy
    ±2 µA 60 pA ±1% of range for Zone 1 of Figure 3, warranted
    ±32 µA 980 pA
    ±128 μA 3.9 nA
    ±2 mA 60 nA
    ±32 mA 980 nA
    Figure 3. Warranted Current Accuracy Zone for PPMU Force Current
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    Note  

    The boundaries of Zone 1 are inclusive of that zone. The area outside of Zone 1 does not have a warranted spec for PPMU force current accuracy.

    How to Calculate PPMU Force Current Accuracy

    1. Specify the desired forced current.
    2. Based on the desired forced current, select an appropriate current range from Table 1.
    3. Divide the desired forced current from step 1 by the current range from step 2 and multiply by 100 to calculate the Percent of Current Range Forced.
    4. Based on the impedance of the load, calculate the voltage required to force the desired current from step 1. Use the following equation: Voltage Required = Desired Current * Load Impedance.
    5. Using Figure 2, locate the zone in which the Percent of Current Range Forced calculated in step 3 intersects with the Voltage calculated in step 4. If the intersection is outside of Zone 1, then there are no warranted specs. To get warranted specs, the current range and/or forced current must be adjusted until the intersection is in Zone 1.
    6. Based on the zone found in step 5, use Table 1 to calculate the accuracy of the forced current.
    PPMU voltage clamps

    Range

    -2 V to 6 V

    Resolution

    122 μV

    Accuracy

    ±100 mV, typical

    PPMU Measure Current

    Table 2. PPMU Measure Current Accuracy
    Range Resolution Accuracy
    ±2 μA 460 pA

    ±1% of range for Zone 1 of Figure 4, warranted

    ±1.5% of range for Zone 2 of Figure 4, warranted

    ±32 μA 7.3 nA
    ±128 μA 30 nA
    ±2 mA 460 nA
    ±32 mA 7.3 μA
    Figure 4. Warranted Current Accuracy Zones for PPMU Measure Current
    spd-note-note
    Note  

    The boundaries of Zone 1 are inclusive of that zone. All other boundaries are inclusive of Zone 2. The area outside of Zone 1 and Zone 2 does not have a warranted spec for PPMU measure current accuracy.

    How to Calculate PPMU Measure Current Accuracy

    1. Specify the desired measured current.
    2. Based on the desired measured current, select an appropriate current range from Table 2.
    3. Divide the desired measured current from step 1 by the current range from step 2 and multiply by 100 to calculate the Percent of Current Range Measured.
    4. If forcing voltage and then measuring current, Voltage in Figure 3 is equal to the forced voltage. If forcing current and then measuring current, Voltage in Figure 3 is equal to the voltage required to force the desired current based on the impedance of the load. Use the following equation: Voltage Required = Desired Current * Load Impedance.
    5. Using Figure 3, locate the zone in which the Percent of Current Range Measured calculated in step 3 intersects with the Voltage calculated in step 4. If the intersection is outside of Zone 1 or Zone 2, then there are no warranted specs. To get warranted specs, the current range and forced current or forced voltage must be adjusted until the intersection is in Zone 1 or Zone 2.
    6. Based on the zone found in step 5, use Table 2 to calculate the accuracy of the measured current.

    PPMU Programmable Aperture Time

    Aperture time

    Minimum

    4 μs

    Maximum

    65 ms

    Resolution

    4 μs

    Figure 5. Voltage Measurement Noise for Given Aperture Times, Typical

    Pattern Control

    Opcodes

    Refer to the following table for supported opcodes. Using matched and failed opcode parameters with multiple PXIe-6571 instruments requires the PXIe-6674T synchronization module. Other uses of flow-control opcodes with multiple PXIe-6571 instruments only require NI-TCLK synchronization.

    Category Supported Opcodes
    Flow Control
    • repeat
    • jump
    • jump_if
    • set_loop
    • end_loop
    • exit_loop
    • exit_loop_if
    • call
    • return
    • keep_alive
    • match
    • halt
    Sequencer Flags and Registers
    • set_seqflag
    • clear_seqflag
    • write_reg
    Signal
    • set_signal
    • pulse_signal
    • clear_signal
    Digital Source and Capture
    • capture_start
    • capture
    • capture_stop
    • source_start
    • source
    • source_d_replace

    Pipeline Latencies

    Minimum delay between source_start opcode and the first source opcode or subsequent source_start opcode

    3 μs

    Matched and failed condition pipeline latency

    80 cycles

    Source and Capture

    Digital Source[11]

    Operation modes

    Serial and parallel; broadcast and site-unique

    Source memory size

    32 MB (256 Mbit) total

    Maximum waveforms

    512

    Digital Capture[11]

    Operation modes

    Serial and parallel; site-unique

    Capture memory size

    1 million samples

    Maximum waveforms

    512

    Independent Clock Generators

    Number of Clock Generators

    32 (one per pin)

    Clock Period Range

    6.25 ns to 40 us (160 MHz to 25 kHz)[12]

    Clock Period Resolution

    38 fs

    Frequency Measurements

    Frequency counter measure frequency

    Range

    5 kHz to 200 MHz, 2.5 ns minimum pulse width

    Accuracy

    See Calculating Frequency Counter Error

    Calculating Frequency Counter Error

    Use the following equation to calculate the frequency counter error (ppm).

    ( T B e r r ( 1 T B e r r ) + 20 n s ( M e a s u r e m e n t T i m e U n k n o w n C l o c k P e r i o d ) ) * 1 , 000 , 000

    where

    • MeasurementTime is the time, in seconds, over which the frequency counter measurement is configured to run
    • UnknownClockPeriod is the time, in seconds, of the period of the signal being measured
    • TBerr is the error of the Clk100 timebase

    Refer to the following table for a few examples of common Clk100 timebase accuracies.

    Table 3. TB err
    PXI Express Hardware Specification Revision 1.0 PXIe-1095 Chassis PXIe-6674T Override
    100 µ (100 ppm) 25 µ (25 ppm) 80 n (80 ppb)

    Example 1: Calculating Error with a PXIe-1095 Chassis

    Calculate the error of performing a frequency measurement of a 10 MHz clock (100 ns period) with a 1 ms measurement time using the PXIe-Clk100 provided by the PXIe-1095 chassis as the timebase.

    Solution

    ( 25 µ ( 1 25 µ ) + 20 n s ( 1 m s 100 n s ) * 1 , 000 , 000

    = 45 p p m

    Example 2: Calculating Error when Overriding with the PXIe-6674T

    Calculate the error if you override the PXIe-Clk100 timebase with the PXIe-6674T and increase the measurement time to 10 ms.

    Solution

    ( 80 n ( 1 80 n ) + 20 n s ( 10 m s 100 n s ) * 1 , 000 , 000

    = 2 p p m

    Calibration Interval

    Recommended calibration interval

    1 year

    Physical Characteristics

    PXIe slots

    1

    Dimensions

    131 mm × 21 mm × 214 mm (5.16 in. × 0.83 in. × 8.43 in.)

    Weight

    640 g (22.5 oz.)

    Power Requirements

    The PXIe-6571 draws current from a combination of the 3.3 V and 12 V power rails. The maximum current drawn from each of these rails can vary depending on the PXIe-6571 mode of operation.

    Input power

    76 W

    Current Draw

    3.3 V

    1.7 A

    12 V

    5.9 A

    • 1 For guidance on better thermal management, visit ni.com/info and enter the info code ThermalManagement.
    • 2 The system channel count is the maximum number of channels available when using multiple PXIe-6571 instruments in a single chassis as a digital subsystem. Some functionality described in this document requires that a PXIe-6674T synchronization module be used in conjunction with each digital subsystem.
    • 3 If the total voltage sourced or driven on any pin relative to GND exceeds the supported measurement range, instrument performance may be degraded.
    • 4 Voltages > 6 V require the Extended Voltage Range mode of operation.
    • 5 Sourced from chassis 100 MHz backplane reference clock, external 10 MHz reference, or PXIe-6674T.
    • 6 The maximum vector rate for patterns may be limited by the pulse width requirements, which may not allow all formats and edge multipliers to be used up to the fastest vector rate.
    • 7 The SBC format is not supported within the 2x edge multiplier mode.
    • 8 31 time sets can be configured. One additional time set, represented by a -, repeats the previous time set.
    • 9 For specifications in a Semiconductor Test System, refer to the Semiconductor Test System Specifications.
    • 10 The Extended Voltage Range is an unwarranted mode of operation that allows the PMU to force voltages between 6 V and 7 V for applications that can tolerate more error than the normal force voltage accuracy.
    • 11 To learn how to calculate achievable data rates for Digital Source or Digital Capture, visit ni.com/info and enter the info code DigitalSourceCapture to access the Calculating Digital Source Rate tutorial or the Calculating Digital Capture Rate tutorial.
    • 12 Clocks with a period < 7.5 ns will have a non-50% duty cycle.

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