NI622x Specifications Specifications listed below are typical at 25°C unless otherwise noted.
Analog Input
Number of channels
NI 6220/8 differential or
16single ended NI 6224/16 differential or
32single ended 40 differential or
80single ended
16 No missing codes
Refer to the AI Absolute
Accuracy Table
Sampling rate
<250 KS/s
<0 S/s
50 ppm of sample rate .50 ns
DC
±10V, ±5V,
±1V,±0.2V Maximum working voltage for analog inputs
(signal + common mode)................±11 V of AI GND CMRR (DC to 60 Hz).....................95 dB
Input impedance
Device on
AI+ to >10 GΩ in parallel
with100 pF
AI– to >10 GΩ in parallel
压花皮with100 pF
Device off
AI+ to 820 Ω
AI– to 820 ΩInput ±100 pA
Crosstalk (at 100 kHz)
.–75 dB
.–90 dB
Small signal bandwidth (–3 dB)......700 kHz
Input 4,095 samples
Scan 4,095 entries
DMA (scatter-gather),
interrupts,
programmed I/O
Overvoltage protection (AI <0..79>, AI SENSE, AI SENSE2) ±25 V for up to
two AI pins
±15 V for up to
two AI pins
Input current during
±20 mA max/AI pin
Settling Time for Multichannel Measurements Accuracy, full scale step, all ranges
±90 ppm of step (±6 LSB)..........4 µs convert interval
±30 ppm of step (±2 LSB)..........5 µs convert interval
±15 ppm of step (±1 LSB)..........7 µs convert interval
NI 622x Specifications 2ni
Typical Performance Graphs
Analog Output
Number of channels
16 ±1 16 bit guaranteed Maximum update rate
1 channel ....................................833 kS/s
740 kS/s per channel
666 kS/s per channel
62
5 kS/s per channel 50 ppm of sample rate 50 ns Output range ...................................±10 V .DC 0.2 ΩOutput ±5 mA .±25 V
10 mA ±20 mV
8.5 V peak for 14.5ms Output 8,191 samples shared
among channels used
DMA (scatter-gather),
interrupts,
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)..............................6 µs
15 V/µs
家用
电动绞肉机Glitch energy
<100 mV
<2.6 µs
Calibration (AI and AO)
Recommended .15 minutes
1 year
© National Instruments Corporation3NI 622x Specifications
NI 622x Specifications
4
ni
A I A b s o l u t e A c c u r a c y T a b l e
N o m i n a l R a n g e
R e s i d u a l G a i n E r r o r (p p m o f R e a d i n g )G a i n T e m p c o (p p m /°C )R e f e r e n c e T e m p c o
R e s i d u a l O f f s e t E r r o r (p p m o f R a n g e )O f f s e t T e m p c o (p p m o f R a n g e /°C )I N L E r r o r (p p m o f R a n g e )R a n d o m N o i s e , σ (µV r m s )
A b s o l u t e A c c u r a c y a t F u l l S c a l e 1 (µV )
S e n s i t i v i t y 2 (µV )低温
油墨 P o s i t i v e F u l l S c a l e N e g a t i v e F u l l S c a l e 10–10
75
25
5
2057762443,100
97.6
5–5
85
25
5
2060761221,620
48.8
1–1
95
25
5
25797630
360
12.0
135
25
5801757613
112
5.2
A b s o l u t e A c c u r a c y = R e a d i n g · (G a i n E r r o r ) + R a n g e · (O f f s e t E r r o r ) + N o i s e U n c e r t a i n t y G a i n E r r o r = R e s i d u a l A I G a i n E r r o r + G a i n T e m p c o · (T e m p C h a n g e F r o m L a s t I n t e r n a l C a l ) + R e f e r e n c e T e m p c o · (T e m p C h a n g e F r o m L a s t E x t e r n a l C a l )O f f s e t E r r o r = R e s i d u a l A I O f f s e t E r r o r + O f f s e t T e m p c o · (T e m p C h a n g e F r o m L a s t I n t e r n a l C a l ) + I N L _E r r o r 1 A b s o l u t e a c c u r a c y a t f u l l s c a l e o n t h e a n a l o g i n p u t c h a n n e l s i s d e t e r m i n e d u s i n g t h e f o l l o w i n g a s s u m p t i o n s :
T e m p C h a n g e F r o m L a s t E x t e r n a l C a l = 10°C T e m p C h a n g e F r o m L a s t I n t e r n a l C a l = 1°C n u m b e r _o f _r e a d i n g s = 100C o v e r a g e F a c t o r = 3 σ
F o r e x a m p l e , o n t h e 10 V r a n g e , t h e a b s o l u t e a c c u r a c y a t f u l l s c a l e i s a s f o l l o w s :
G a i n E r r o r = 75 p p m + 25 p p m · 1 + 5 p p m · 10G a i n E r r o r = 150 p p m O f f s e t E r r o r = 20 p p m + 57 p p m · 1 + 76 p p m O f f s e t E r r o r = 153 p p m
A b s o l u t e A c c u r a c y = 10 V · (G a i n E r r o r ) + 10 V · (O f f s e t E r r o r ) + N o i s e U n c e r t a i n t y A b s o l u t e A c c u r a c y = 3,100 µV
2 S e n s i t i v i t y i s t h e s m a l l e s t v o l t a g e c h a n g e t h a t c a n b e d e t e c t e d . I t i s a f u n c t i o n o f n o i s e .
A c c u r a c i e s l i s t e d a r e v a l i d f o r u p t o o n e y e a r f r o m t h e d e v i c e e x t e r n a l c a l i b r a t i o n .
N o i s e U n c e r t a i n t y R a n d o m N o i s e 3⋅100
-
----------------------------------------=F o r a c o v e r a g e f a c t o r o f 3 σ a n d a v e r a g i n g 100 p o i n t s .N o i s e U n c e r t a i n t y 244 µV 3
⋅100
--------------------------=N o i s e U n c e r t a i n t y 73 µV
=
© National Instruments Corporation
5NI 622x Specifications
A O A b s o l u t e A c c u r a c y T a b l e
N o m i n a l R a n g e
R e s i d u a l G a i n E r r o r (p p m o f R e a d i n g )G a i n T e m p c o (p p m /°C )
R e f e r e n c e T e m p c o
dmx512协议
R e s i d u a l O f f s e t E r r o r (p p m o f R a n g e )O f f s e t T e m p c o (p p m o f R a n g e /°C )I N L E r r o r (p p m o f R a n g e )
A b s o l u t e A c c u r a c y a t F u l l S c a l e 1 (µV )
P o s i t i v e F u l l S c a l e
N e g a t i v e F u l l S c a l e
10
–10
90
105405128
3,230
1 A b s o l u t e A c c u r a c y a t f u l l s c a l e n u m b e r s i s v a l i d i m m e d i a t e l y f o l l o w i n g i n t e r n a l c a l i b r a t i o n a n d a s s u m e s t h e d e v i c e i s o p e r a t i n g w i
t h i n 10°C o f t h e l a s t e x t e r n a l c a l i b r a t i o n .
A c c u r a c i e s l i s t e d a r e v a l i d f o r u p t o o n e y e a r f r o m t h e d e v i c e e x t e r n a l c a l i b r a t i o n .
A b s o l u t e A c c u r a c y = O u t p u t V a l u e · (G a i n E r r o r ) + R a n g e · (O f f s e t E r r o r )G a i n E r r o r = R e s i d u a l G a i n E r r o r + G a i n T e m p c o · (T e m p C h a n g e F r o m L a s t I n t e r n a l C a l ) + R e f e r e n c e T e m p c o · (T e m p C h a n g e F r o m L a s t E x t e r n a l C a l )O f f s e t E r r o r = R e s i d u a l O f f s e t E r r o r + A O O f f s e t T e m p c o · (T e m p C h a n g e F r o m L a s t I n t e r n a l C a l ) + I N L _E r r o r
NI 622x Specifications 6ni
Digital I/O/PFI
Static Characteristics
Number of channels
NI 6220/NI 6221 (68-pin)/
二苯并萘
24 total
8 (P0.<0..7>)
16(PFI <0..7>/P1, PFI <8..15>/P2)NI 6224/48 total
32 (P0.<0..31>) 16(PFI <0..7>/P1, PFI <8..15>/P2)NI 6221 (37-pin).........................10 total
2 (P0.<0, 1>) 8(PFI <0..7>/P1)D GND .Each terminal
individually programmable as input or output 50 k Ω to 75 k ΩInput voltage ±20 V on up to two pins
Waveform Characteristics (Port 0Only)
Terminals used
NI 6220/NI 6221 (68-pin)/
Port 0 (P0.<0..7>)NI 6224/Port 0 (P0.<0..31
>)NI 6221 (37-pin).........................Port 0 (P0.<0, 1>)Port/sample size
NI 6220/NI 6221 (68-pin)/
Up to 8 bits NI 6224/Up to 32 bits NI 6221 (37-pin).........................Up to 2 bits Waveform generation (DO) 2,047 samples Waveform acquisition (DI) 2,047 samples DO or DI Sample Clock
<0 to 1 MHz DO or DI Sample Clock Any PFI, RTSI,
AI Sample or Convert Clock,
AO Sample Clock, Ctr n Internal Output, and many other signals
PFI/Port 1/Port 2 Functionality 3
static digital output, timing input, timing output Timing Many AI, AO, counter,
DI, DO timing signals Debounce 125ns, 6.425µs,
2.54ms, disable;
high and low transitions; selectable per input
Recommended Operation Conditions
Electrical Characteristics
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 Port 2 is not available on the NI 6221 (37-pin) device.
Level
Min Max Input high voltage (V IH ) 2.2 V 5.25 V Input low voltage (V IL )0 V
0.8 V
Output high current (I OH )P0.<0..31>
PFI <0..15>/P1/P2——
–24 mA –16 mA
Output low current (I OL )P0.<0..31>PFI <0..15>/P1/P2
——
24 mA 16 mA
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 —I IL input low current (V in =0V)I IH input high current (V in =5V)
——
–10 µA 250 µA
