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NI 6351
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National Semiconductor NI 6351, 6353 Technical data

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NI 6351/6353 Specifications

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Specifications listed below are typical at 25 °C unless otherwise noted. Refer to the X Series User Manual for more information about NI PCIe-6351/6353 and NI USB-6351/6353 devices.

Analog Input

Number of channels
NI 6351.......................................8 differential or
16 single ended
NI 6353.......................................16 differential or
ADC resolution...............................16 bits
DNL ................................................ No missing codes
guaranteed
INL.................................................. Refer to the AI Absolute
Accuracy Table
Sampling rate
Maximum ...................................1.25 MS/s single channel,
1.00 MS/s multi-channel (aggregate)
Minimum....................................No minimum
Timing accuracy.........................50 ppm of sample rate
Timing resolution....................... 10 ns
Input coupling................................. DC
Input range ...................................... ±10 V, ±5 V, ±2 V, ±1 V,
±0.5 V, ±0.2 V, ±0.1 V
Maximum working voltage for analog inputs
(signal + common mode)................ ±11 V of AI GND
CMRR (DC to 60 Hz)..................... 100 dB
Input impedance
Device on
AI+ to AI GND...................... >10 G in parallel
with 100 pF
AI– to AI GND ...................... >10 G in parallel
with 100 pF
Device off
AI+ to AI GND ......................820
AI– to AI GND.......................820
Input bias current.............................±100 pA
Crosstalk (at 100 kHz)
Adjacent channels.......................–75 dB
Non-adjacent channels................–95 dB
Small signal bandwidth (–3 dB) ...... 1.7 MHz
Input FIFO size................................4,095 samples
Scan list memory.............................4,095 entries
Data transfers
NI PCIe-6351/6353.....................DMA (scatter-gather),
programmed I/O
NI USB-6351/6353.....................USB Signal Stream,
programmed I/O
Overvoltage protection (AI <0..31>, AI SENSE, AI SENSE 2)
Device on ....................................±25 V for up to
two AI pins
Device off ...................................±15 V for up to
two AI pins
Input current during
overvoltage condition......................±20 mA max/AI pin

Settling Time for Multichannel Measurements Typical Performance Graphs

Settling Error Versus Time for Different Source Impedances
1 10 100
Time (μs)
Error (ppm of Step Size)
10
100
1 K
10 K
≤100 Ω
5 kΩ 10 kΩ
2 kΩ
1 kΩ
AI <0..31> Small Signal Bandwidth
–8
–7
–6
–5
–4
–3
–2
–1
0
1
1 k 10 k 100 k 1000 k 10000 k
Frequency (Hz)
Normalized Signal Amplitude (dB)
AI <0..31> CMRR
40
50
60
70
80
90
100
110
120
130
10 100 1 k 10 k 100 k
Frequency (Hz)
CMRR (dB)
10 V Range
5 V Range
0.1 V Range
Range
±10 V, ±5 V,
±60 ppm of Ste p
(±4 LSB for
Full Scale Step)
1 s 1.5 s
±15 ppm of Step
(±1 LSB for
Full Scale Step)
±2 V, ±1 V
±0.5 V 1.5 s 2 s
±0.2 V, ±0.1 V 2 s 8 s
NI 6351/6353 Specifications 2 ni.com

Analog Triggers

Number of triggers.......................... 1
Source
NI 6351.......................................AI <0..15>, APFI 0
NI 6353.......................................AI <0..31>, APFI <0..1>
Functions......................................... Start Trigger,
Reference Trigger, Pause Trigger, Sample Clock, Convert Clock, Sample Clock Timebase
Source level
AI <0..31> .................................. ±full scale
APFI <0..1>................................ ±10 V
Resolution .......................................16 bits
Modes.............................................. Analog edge triggering,
analog edge triggering with hysteresis, and analog window triggering
Bandwidth (–3 dB)
AI <0..31> .................................. 3.4 MHz
APFI <0..1>................................ 3.9 MHz
Accuracy .........................................±1% of range
APFI <0..1> characteristics
Input impedance ......................... 10 k
Coupling .....................................DC
Protection
Power on ................................ ±30 V
Power off................................±15 V

Analog Output

Number of channels
NI 6351.......................................2
NI 6353.......................................4
DAC resolution...............................16 bits
DNL ................................................ ±1 LSB
Monotonicity...................................16 bit guaranteed
Accuracy ......................................... Refer to the AO Absolute
Accuracy Table
Maximum update rate
1 channel.....................................2.86 MS/s
2 channels ...................................2.00 MS/s
3 channels ...................................1.54 MS/s
4 channels ...................................1.25 MS/s
Timing accuracy..............................50 ppm of sample rate
Timing resolution............................10 ns
Output range....................................±10 V, ±5 V, ±external
reference on APFI <0..1>
Output coupling...............................DC
Output impedance ...........................0.2
Output current drive ........................±5 mA
Overdrive protection .......................±25 V
Overdrive current ............................26 mA
Power-on state.................................±5 mV
Power-on/off glitch
NI PCIe-6351/6353.....................1.5 V peak for 200 ms
NI USB-6351/6353.....................1.5 V for 1.2 s
Output FIFO size.............................8,191 samples shared
among channels used
Data transfers
NI PCIe-6351/6353.....................DMA (scatter-gather),
programmed I/O
NI USB-6351/6353.....................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
Settling time, full scale step
15 ppm (1 LSB)...............................2 s
Slew rate..........................................20 V/s
Glitch energy at midscale transition,
±10 V range.....................................10 nV  s
1
1
Typical behavior. Time period may be longer due to host system USB performance. Time period will be longer during firmware updates.
© National Instruments Corporation 3 NI 6351/6353 Specifications

External Reference

AO <0..3> Analog Output External Reference Bandwidth
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
100
1k 10 k 100 k 1 M
Frequency (Hz)
Normalized AO Amplitude
Attenuation (dB)
DAC Output CODE (HEX)
8003
800F
803F
80FF
83FF
8FFF
BFFF
FFFF
APFI <0..1> characteristics
Input impedance..........................10 k
Coupling......................................DC
Protection
Power on.................................±30 V
Power off ................................±15 V
Range...............................................±11 V
Slew rate..........................................20 V/s

Calibration (AI and AO)

Recommended warm-up time .........15 minutes
Calibration interval..........................2 years
NI 6351/6353 Specifications 4 ni.com
NoiseUncertainty
RandomNoise 3
10,000
-----------------------------------------=
NoiseUncertainty
281 V3
10,000
--------------------------=
1
Accuracy at
Random
INL Error
Tem pc o
Offset Error
Reference
Full Scale
Noise,
(ppm of
(ppm of
(ppm of
Tem pc o
(V)
(Vrms)
Range)
Range/°C)
Range)
(ppm/°C)
Absolute
Offset
Residual
and averaging 10,000 points.
V
Gain
Tem pc o
(ppm/°C)
(ppm of
Reading)
Gain Error
Negative
Full Scale
Nominal Range Residual
Positive
Full Scale

AI Absolute Accuracy Table

10 –10 48 13 1 13 21 46 281 1520
5 –5 55 13 1 13 21 46 137 800
2 –2 55 13 1 13 24 46 56 320
1 –1 65 13 1 17 27 46 35 180
0.5 –0.5 68 13 1 17 34 46 26 95
0.2 –0.2 95 13 1 27 55 46 21 50
0.1 –0.1 108 13 1 45 90 46 16 32
AbsoluteAccuracy = Reading · (GainError) + Range · (OffsetError) + NoiseUncertainty
© National Instruments Corporation 5 NI 6351/6353 Specifications
For a coverage factor of 3
NoiseUncertainty = 8.4
TempChangeFromLastExternalCal = 10 °C
TempChangeFromLastInternalCal = 1 °C
number_of_readings = 10,000
CoverageFactor = 3
GainError = 48 ppm + 13 ppm · 1 + 1 ppm · 10 GainError = 71 ppm
GainError = ResidualGainError + GainTempco · (TempChangeFromLastInternalCal) + ReferenceTempco · (TempChangeFromLastExternalCal)
OffsetError = ResidualOffsetError + OffsetTempco · (TempChangeFromLastInternalCal) + INL_Error
Absolute accuracy at full scale on the analog input channels is determined using the following assumptions:
1
OffsetError = 13 ppm + 21 ppm · 1 + 46 ppm OffsetError = 80 ppm
For example, on the 10 V range, the absolute accuracy at full scale is as follows:
AbsoluteAccuracy = 10 V · (GainError) + 10 V · (OffsetError) + NoiseUncertainty AbsoluteAccuracy = 1,520 V
Accuracies listed are valid for up to two years from the device external calibration.
1
Absolute
Residual
(V)
Full Scale
Accuracy at
Range)
(ppm of
INL Error
(ppm of
Range/°C)
Offset Tempco
Range)
(ppm of
Offset Error
Tem pc o
(ppm/°C)
Reference
(ppm/°C)
Gain Tempco
Reading)
Residual Gain
Error (ppm of
Negative
Full Scale

AO Absolute Accuracy Table

Nominal Range
Positive
Full Scale
10 –10 63 17 1 33 2 64 1890
5 –5 70 8 1 33 2 64 935
GainError = ResidualGainError + GainTempco · (TempChangeFromLastInternalCal) + ReferenceTempco · (TempChangeFromLastExternalCal)
AbsoluteAccuracy = OutputValue · (GainError) + Range · (OffsetError)
OffsetError = ResidualOffsetError + OffsetTempco · (TempChangeFromLastInternalCal) + INL_Error
Absolute Accuracy at full scale numbers is valid immediately following internal calibration and assumes the device is operating within 10 °C of the last external calibration.
Accuracies listed are valid for up to two years from the device external calibration.
1
NI 6351/6353 Specifications 6 ni.com

Digital I/O/PFI

Static Characteristics

Number of channels
NI 6351.......................................24 total, 8 (P0.<0..7>),
NI 6353.......................................48 total, 32 (P0.<0..31>),
Ground reference ............................ D GND
Direction control............................. Each terminal
Pull-down resistor...........................50 k typ,
1
Input voltage protection
................. ±20 V on up to two pins

Waveform Characteristics (Port 0 Only)

Terminals used
NI 6351.......................................Port 0 (P0.<0..7>)
NI 6353.......................................Port 0 (P0.<0..31>)
Port/sample size
NI 6351.......................................Up to 8 bits
NI 6353.......................................Up to 32 bits
Waveform generation (DO) FIFO... 2,047 samples
Waveform acquisition (DI) FIFO ... 255 samples
DI Sample Clock frequency
NI PCIe-6351/6353 .................... 0 to 10 MHz, system and
NI USB-6351/6353..................... 0 to 1 MHz system and
DO Sample Clock frequency
NI PCIe-6351/6353
Regenerate from FIFO........... 0 to 10 MHz
Streaming from memory........ 0 to 10 MHz, system and
NI USB-6351/6353
Regenerate from FIFO........... 0 to 10 MHz
Streaming from memory........ 0 to 1 MHz system and
16 (PFI <0..7>/P1, PFI <8..15>/P2)
16 (PFI <0..7>/P1, PFI <8..15>/P2)
individually programmable as input or output
20 k min
bus activity dependent
bus activity dependent
bus activity dependent
bus activity dependent
Data transfers
NI PCIe-6351/6353.....................DMA (scatter-gather),
programmed I/O
NI USB-6351/6353.....................USB Signal Stream,
Digital line filter settings.................160 ns, 10.24 s, 5.12 ms,
programmed I/O
disable

PFI/Port 1/Port 2 Functionality

Functionality....................................Static digital input,
Timing output sources.....................Many AI, AO, counter,
Debounce filter settings ...................90 ns, 5.12 s, 2.56 ms,
static digital output, timing input, timing output
DI, DO timing signals
custom interval, disable; programmable high and low transitions; selectable per input

Recommended Operation Conditions

Level Min Max
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..31> PFI <0..15>/P1/P2
Output low current (IOL)
P0.<0..31> PFI <0..15>/P1/P2
—
–24 mA
—
–16 mA
— —
24 mA 16 mA

Electrical Characteristics

Level Min Max
Positive-going threshold (VT+) — 2.2 V
Negative-going threshold (VT–) 0.8 V —
Delta VT hysteresis (VT+ – VT–) 0.2 V —
IIL input low current (Vin=0V)
I
input high current (Vin=5V)
IH
—
—
–10 A
250 A
1
Stresses beyond those listed under Input voltage protection may cause permanent damage to the device.
© National Instruments Corporation 7 NI 6351/6353 Specifications

Digital I/O Characteristics

–50
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
23456
V
oh
(V)
I
oh
(mA)
0 °C; Vdd = 5.5 V
55 °C; Vdd = 4.5 V
25 °C; Vdd = 5.0 V
P0.<0..31>: Ioh versus V
oh
–50
–45
–40
–35
–30
–25
–20
–15
–10
–5
0
23456
V
oh
(V)
I
oh
(mA)
PFI <0..15>/P1/P2: Ioh versus V
oh
0 °C; Vdd = 5.5 V
55 °C; Vdd = 4.5 V
25 °C; Vdd = 5.0 V
0
5
10
15
20
25
30
35
40
0 0.2 0.4 0.6 0.8 1 1.2
V
ol
(V)
I
ol
(mA)
PFI <0..15>/P1/P2: Iol versus V
ol
0 °C; Vdd = 5.5 V
55 °C; Vdd = 4.5 V
25 °C; Vdd = 5.0 V
P0.<0..31>: Iol versus V
ol
40
35
0 °C; Vdd = 5.5 V
30
25
20
(mA)
ol
I
15
25 °C; Vdd = 5.0 V
10
5
0
0 0.2 0.4 0.6 0.8 1 1.2
55 °C; Vdd = 4.5 V
V
(V)
ol
NI 6351/6353 Specifications 8 ni.com

General-Purpose Counter/Timers

Number of counter/timers ............... 4
Resolution .......................................32 bits
Counter measurements.................... Edge counting, pulse,
pulse width, 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.........................100 MHz, 20 MHz,
100 kHz
External base clock frequency ........ 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
NI PCIe-6351/6353 .................... Any PFI, RTSI,
analog trigger, many internal signals
NI USB-6351/6353..................... Any PFI, analog trigger,
many internal signals
FIFO................................................127 samples per counter
Data transfers
NI PCIe-6351/6353 ....................Dedicated scatter-gather
DMA controller for each counter/timer, programmed I/O
NI USB-6351/6353..................... 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 or RTSI terminal.

Phase-Locked Loop (PLL)

Number of PLLs..............................1
Reference clock locking frequencies
Locking Input
Frequency (MHz)
Reference Signal
RTSI <0..7> 10, 20 —
PFI <0..15> 10, 20 10
Output of PLL .................................100 MHz Timebase;
PCIe USB
other signals derived from 100 MHz Timebase including 20 MHz and 100 kHz Timebases

External Digital Triggers

Source
NI PCIe-6351/6353.....................Any PFI, RTSI
NI USB-6351/6353.....................Any PFI
Polarity ............................................Software-selectable for
most signals
Analog input function......................Start Trigger,
Analog output function....................Start Trigger,
Counter/timer functions...................Gate, Source, HW_Arm,
Digital waveform generation
(DO) function ..................................Start Trigger,
Digital waveform acquisition
(DI) function....................................Start Trigger,
Reference Trigger, Pause Trigger, Sample Clock, Convert Clock, Sample Clock Timebase
Pause Trigger, Sample Clock, Sample Clock Timebase
Aux, A, B, Z, Up_Down, Sample Clock
Pause Trigger, Sample Clock, Sample Clock Timebase
Reference Trigger, Pause Trigger, Sample Clock, Sample Clock Timebase
© National Instruments Corporation 9 NI 6351/6353 Specifications

Device-To-Device Trigger Bus

Input source
NI PCIe-6351/6353.....................RTSI <0..7>
NI USB-6351/6353 .....................None
Output destination
NI PCIe-6351/6353.....................RTSI <0..7>
NI USB-6351/6353 .....................None
Output selections .............................10 MHz Clock; frequency
generator output; many internal signals
Debounce filter settings...................90 ns, 5.12 s, 2.56 ms,
custom interval, disable; programmable high and low transitions; selectable per input

Power Requirements

NI PCIe-6351/6353
Without disk drive power connector installed
+3.3 V .................................... 4.6 W
+12 V .....................................5.4 W
With disk drive power connector installed
+3.3 V .................................... 1.6 W
+12 V .....................................5.4 W
+5.0 V .................................... 15 W
Caution NI USB-6351/6353 devices must be powered with NI offered AC adapter or a National Electric Code (NEC) Class 2 DC source that meets the power requirements for the device and has appropriate safety certification marks for country of use.

Bus Interface

NI PCIe-6351/6353
Form factor .................................x1 PCI Express,
Slot compatibility ........................x1, x4, x8, and x16
DMA channels ............................8, analog input,
NI USB-6351/6353
USB compatibility ......................USB 2.0 Hi-Speed or
USB Signal Stream.....................8, can be used for analog
specification v1.1 compliant
PCI Express slots
analog output, digital input, digital output, counter/timer 0, counter/timer 1, counter/timer 2, counter/timer 3
full-speed
input, analog output, digital input, digital output, counter/timer 0, counter/timer 1, counter/timer 2, counter/timer 3
2
NI USB-6351/6353
Power supply requirements ........ 11 to 30 VDC, 30 W,
1
Power input mating connector.... Phoenix Contact
2 positions 3.5mm pitch pluggable screw terminal with screw locks similar to Phoenix Contact MC 1,5/2-STF-3,5 BK
MC 1,5/2-GF-3,5 BK or equivalent
1
Some motherboards reserve the x16 slot for graphics use. For PCI Express guidelines, refer to ni.com/pciexpress.
2
Operating on a full-speed bus will result in lower performance and you might not be able to achieve maximum sampling/update
rates.
NI 6351/6353 Specifications 10 ni.com

Current Limits

Caution Exceeding the current limits may cause
unpredictable behavior by the device and/or PC.
NI PCIe-6351/6353
Without disk drive power connector installed
P0/PFI/P1/P2 and +5 V
terminals combined................ 0.59 A max
With disk drive power connector installed
+5 V terminal (connector 0)... 1 A max
+5 V terminal (connector 1)... 1 A max
P0/PFI/P1/P2 combined......... 1 A max
NI USB-6351/6353
+5 V terminal.............................. 1 A max
P0/PFI/P1/P2 and +5 V
terminals combined ....................2 A max
1
1
1

Physical Requirements

Printed circuit board dimensions
NI PCIe-6351/6353......................... 9.9 16.8 cm
(3.9 6.6 in.) (half-length)
Enclosure dimensions (includes connectors)
NI USB-6351/6353 ......................... 26.4 17.3 3.6 cm
Weight
NI PCIe-6351 .............................161 g (5.6 oz)
NI PCIe-6353 .............................169 g (5.9 oz)
NI USB-6351/6353..................... 1.42 kg (3 lb 2 oz)
I/O connector
NI PCIe-6351 ............................. 1 68-pin VHDCI
NI PCIe-6353 ............................. 2 68-pin VHDCI
NI USB-6351.............................. 64 screw terminals
NI USB-6353.............................. 128 screw terminals
NI PCIe-6351/6353 mating connectors:
• 68-Pos Right Angle Single Stack PCB-Mount VHDCI (Receptacle), MOLEX 71430-0011
• 68-Pos Right Angle Dual Stack PCB-Mount VHDCI (Receptacle), MOLEX 74337-0016
• 68-Pos Offset IDC Cable Connector (Plug) (SHC68-*), MOLEX 71425-3001
(10.4  6.8  1.4 in.)
NI PCIe-6351/6353
disk drive power connector .............Standard ATX
NI USB-6351/6353
screw terminal wiring ......................16–24 AWG

Maximum Working Voltage

Channel-to-earth..............................11 V,
Caution Do not use for measurements within Categories II, III, or IV.
peripheral connector (not serial ATA)
2
Measurement Category I

Environmental

Operating temperature
NI PCIe-6351/6353.....................0 to 50 °C
NI USB-6351/6353.....................0 to 45 °C
Storage temperature.........................–40 to 70 °C
Humidity..........................................10 to 90% RH,
Maximum altitude ...........................2,000 m
Pollution Degree
(indoor use only) .............................2
noncondensing

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.
1
Has a self-resetting fuse that opens when current exceeds this specification.
2
Maximum working voltage refers to the signal voltage plus the common-mode voltage.
© National Instruments Corporation 11 NI 6351/6353 Specifications

Electromagnetic Compatibility

⬉ᄤֵᙃѻક∵ᶧ᥻ࠊㅵ⧚ࡲ⊩ ˄Ё೑
RoHS
˅
Ё೑ᅶ᠋
National Instruments
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ᙃѻકЁ䰤ࠊՓ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ
(RoHS)
DŽ݇Ѣ
National InstrumentsЁ೑RoHS
ড়㾘ᗻֵᙃˈ
䇋ⱏᔩ
ni.com/environment/rohs_china
DŽ
(For information about China RoHS compliance, go to
ni.com/environment/rohs_china
.)
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
Caution When operat ing this product, us e shielded cables and accessories
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:
• 2006/95/EC; Low-Voltage Directive (safety)
• 2004/108/EC; Electromagnetic Compatibility Directive (EMC)

Online Product Certification

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

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 NI and the Environment Web page at 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 products must be sent to a WEEE recycling center. For more information about WEEE recycling centers, National Instruments WEEE initiatives, and compliance with WEEE Directive 2002/96/EC on Waste Electrical and Electronic Equipment, visit
environment/weee.htm
ni.com/environment. This
ni.com/
.
NI 6351/6353 Specifications 12 ni.com
D GND
D GND
PFI 8/P2.0
PFI 7/P1.7
PFI 15/P2.7
PFI 13/P2.5
PFI 4/P1.4
PFI 3/P1.3
PFI 2/P1.2
D GND
PFI 10/P2.2
PFI 11/P2.3
P0.3
P0.7
P0.2
D GND
P0.5
P0.0
D GND
AO GND
AO GND
AI GND
AI 7 (AI 7+)
AI 14 (AI 6–)
AI GND
AI 5 (AI 5+)
AI 12 (AI 4–)
AI SENSE
AI 11 (AI 3–)
AI GND
AI 2 (AI 2+)
AI 9 (AI 1–)
AI GND
AI 0 (AI 0+)
PFI 14/P2.6
PFI 9/P2.1
D GND
PFI 5/P1.5
D GND
+5 V
D GND
PFI 12/P2.4
PFI 6/P1.6
PFI 1/P1.1
PFI 0/P1.0
D GND
D GND
+5 V
D GND
P0.6
P0.1
D GND
P0.4
APFI 0
AO 1
AO 0
AI 15 (AI 7–)
AI GND
AI 6 (AI 6+)
AI 13 (AI 5–)
AI GND
AI 4 (AI 4+)
AI GND
AI 3 (AI 3+)
AI 10 (AI 2–)
AI GND
AI 1 (AI 1+)
AI 8 (AI 0–)
68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43 9
42 8
41 7
40 6
39 5
38 4
37 3
36 2
35 1
TERMINAL 34TERMINAL 68
TERMINAL 1TERMINAL 35
CONNECTOR 0
(AI 0-15)
© National Instruments Corporation 13 NI 6351/6353 Specifications

Figure 1. NI PCIe-6351 Pinout

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
AI 4 (AI 4+) AI 12 (AI 4–) AI GND AI 5 (AI 5+) AI 13 (AI 5–) AI GND AI 6 (AI 6+) AI 14 (AI 6–) AI GND AI 7 (AI 7+) AI 15 (AI 7–) AI GND APFI 0 AI GND AO 1 AO GND
AI 0 (AI 0+) AI 8 (AI 0–) AI GND AI 1 (AI 1+) AI 9 (AI 1–) AI GND AI 2 (AI 2+) AI 10 (AI 2–) AI GND AI 3 (AI 3+) AI 11 (AI 3–) AI GND AI SENSE AI GND AO 0 AO GND
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
PFI 8/P2.0 D GND PFI 9/P2.1 D GND PFI 10/P2.2 D GND PFI 11/P2.3 D GND PFI 12/P2.4 D GND PFI 13/P2.5 D GND PFI 14/P2.6 D GND PFI 15/P2.7 +5 V
P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 PFI 0/P1.0 PFI 1/P1.1 PFI 2/P1.2 PFI 3/P1.3 PFI 4/P1.4 PFI 5/P1.5 PFI 6/P1.6 PFI 7/P1.7
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

Figure 2. NI USB-6351 Pinout

NI 6351/6353 Specifications 14 ni.com
CONNECTOR 0
(AI 0-15)
CONNECTOR 1
(AI 16-31)
D GND
D GND
PFI 8/P2.0
PFI 7/P1.7
PFI 15/P2.7
PFI 13/P2.5
PFI 4/P1.4
PFI 3/P1.3
PFI 2/P1.2
D GND
PFI 10/P2.2
PFI 11/P2.3
P0.3
P0.7
P0.2
D GND
P0.5
P0.0
D GND
AO GND
AO GND
AI GND
AI 7 (AI 7+)
AI 14 (AI 6–)
AI GND
AI 5 (AI 5+)
AI 12 (AI 4–)
AI SENSE
AI 11 (AI 3–)
AI GND
AI 2 (AI 2+)
AI 9 (AI 1–)
AI GND
AI 0 (AI 0+)
PFI 14/P2.6
PFI 9/P2.1
D GND
PFI 5/P1.5
D GND
+5 V
D GND
PFI 12/P2.4
PFI 6/P1.6
PFI 1/P1.1
PFI 0/P1.0
D GND
D GND
+5 V
D GND
P0.6
P0.1
D GND
P0.4
APFI 0
AO 1
AO 0
AI 15 (AI 7–)
AI GND
AI 6 (AI 6+)
AI 13 (AI 5–)
AI GND
AI 4 (AI 4+)
AI GND
AI 3 (AI 3+)
AI 10 (AI 2–)
AI GND
AI 1 (AI 1+)
AI 8 (AI 0–)
68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43 9
42 8
41 7
40 6
39 5
38 4
37 3
36 2
35 1
AI 24 (AI 16–)
AI 17 (AI 17+)
AI GND
AI 26 (AI 18–)
AI 19 (AI 19+)
AI GND
AI 20 (AI 20+)
AI GND
AI 29 (AI 21–)
AI 22 (AI 22+)
AI GND
AI 31 (AI 23–)
AO 2
AO 3
APFI 1
P0.12
D GND
P0.9
P0.14
D GND
+5 V
D GND
D GND
P0.16
P0.17
D GND
+5 V
D GND
P0.21
P0.22
D GND
P0.25
P0.28
P0.30
AI 16 (AI 16+)
AI 25 (AI 17–)
AI 18 (AI 18+)
AI 27 (AI 19–)
AI SENSE 2
AI 28 (AI 20–)
AI 21 (AI 21+)
AI GND
AI GND
AI GND
AI 30 (AI 22–)
AI 23 (AI 23+)
AI GND
AO GND
AO GND
D GND
P0.8
P0.13
D GND
P0.10
P0.15
P0.11
P0.27
P0.26
D GND
P0.18
P0.19
P0.20
P0.29
P0.31
P0.23
P0.24
D GND
D GND
135
236
337
438
539
640
741
842
943
10 44
11 45
12 46
13 47
14 48
15 49
16 50
17 51
18 52
19 53
20 54
21 55
22 56
23 57
24 58
25 59
26 60
27 61
28 62
29 63
30 64
31 65
32 66
33 67
34 68
TERMINAL 34
TERMINAL 68
TERMINAL 35
TERMINAL 1
TERMINAL 35
TERMINAL 1
TERMINAL 34
TERMINAL 68
© National Instruments Corporation 15 NI 6351/6353 Specifications

Figure 3. NI PCIe-6353 Pinout

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
AI 4 (AI 4+) AI 12 (AI 4–) AI GND AI 5 (AI 5+) AI 13 (AI 5–) AI GND AI 6 (AI 6+) AI 14 (AI 6–) AI GND AI 7 (AI 7+) AI 15 (AI 7–) AI GND APFI 0 AI GND AO 1 AO GND
AI 0 (AI 0+) AI 8 (AI 0–) AI GND AI 1 (AI 1+) AI 9 (AI 1–) AI GND AI 2 (AI 2+) AI 10 (AI 2–) AI GND AI 3 (AI 3+) AI 11 (AI 3–) AI GND AI SENSE AI GND AO 0 AO GND
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
AI 20 (AI 20+) AI 28 (AI 20–) AI GND AI 21 (AI 21+) AI 29 (AI 21–) AI GND AI 22 (AI 22+) AI 30 (AI 22–) AI GND AI 23 (AI 23+) AI 31 (AI 23–) AI GND APFI 1 AI GND AO 3 AO GND
AI 16 (AI 16+) AI 24 (AI 16–) AI GND AI 17 (AI 17+) AI 25 (AI 17–) AI GND AI 18 (AI 18+) AI 26 (AI 18–) AI GND AI 19 (AI 19+) AI 27 (AI 19–) AI GND AI SENSE 2 AI GND AO 2 AO GND
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96
PFI 8/P2.0 D GND PFI 9/P2.1 D GND PFI 10/P2.2 D GND PFI 11/P2.3 D GND PFI 12/P2.4 D GND PFI 13/P2.5 D GND PFI 14/P2.6 D GND PFI 15/P2.7 +5 V
P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 PFI 0/P1.0 PFI 1/P1.1 PFI 2/P1.2 PFI 3/P1.3 PFI 4/P1.4 PFI 5/P1.5 PFI 6/P1.6 PFI 7/P1.7
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128
P0.24 D GND P0.25 D GND P0.26 D GND P0.27 D GND P0.28 D GND P0.29 D GND P0.30 D GND P0.31 D GND
P0.8 P0.9 P0.10 P0.11 P0.12 P0.13 P0.14 P0.15 P0.16 P0.17 P0.18 P0.19 P0.20 P0.21 P0.22 P0.23
97 98
99 100 101 102 103 104 105 106 107 108 109 110 111 112

Figure 4. NI USB-6353 Pinout

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370787B-01 Aug10
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