Multifunction_RIO_Specs.pdf - 第6页
Multifunction Reconfigurable I/O Specifi cations 6 ni.com Timebase reference sources PCI-781 x /783 x ........... ................. Onboard clock on ly PCIe-784 x /785 x ............... ........... Onboard clock only PXI…
© National Instruments Corporation 5 Multifunction Reconfigurable I/O Specifications
Digital I/O
Number of channels
NI 781x ....................................... 160
NI 7830....................................... 56
NI 7831/7833/7841/7842/
7851/7852/7853/7854................. 96
Compatibility .................................. TTL
Digital logic levels
Output current
Source......................................... 4.0 mA
Sink............................................. 4.0 mA
Input leakage current ...................... ±10 μA
Power-on state................................. Programmable, by line
Protection
Input
NI 781x/783x.......................... –0.5 to 7.0 V, single line
NI 784x/785x
..........................–20.0
to
20.0
V,
single
line
Output......................................... Short-circuit
(up to eight lines may be
shorted at a time)
Minimum pulse width
Input............................................ 25 ns
Output......................................... 12.5 ns
Minimum sampling period.............. 5 ns
Reconfigurable FPGA
NI 7811/7830/7831
FPGA type ..................................Virtex-II V1000
Number of flip-flops ...................10,240
Number of 4-input LUTs ............10,240
Number of 18 × 18 multipliers ...40
Embedded block RAM ...............720 kbits
NI 7813/7833
FPGA type ..................................Virtex-II V3000
Number of flip-flops ...................28,672
Number of 4-input LUTs ............28,672
Number of 18 × 18 multipliers ...96
Embedded block RAM ...............1,728 kbits
NI 7841/7851
FPGA type ..................................Virtex-5 LX30
Number of flip-flops ...................19,200
Number of 6-input LUTs ............19,200
Number of DSP48
slices (25 × 18 multipliers) .........32
Embedded block RAM ...............1,152 kbits
NI 7842/7852
FPGA type ..................................Virtex-5 LX50
Number of flip-flops ...................28,800
Number of 6-input LUTs ............28,800
Number of DSP48
slices (25 × 18 multipliers) .........48
Embedded block RAM ...............1,728 kbits
NI 7853
FPGA type ..................................Virtex-5 LX85
Number of flip-flops ...................51,840
Number of 6-input LUTs ............51,840
Number of DSP48
slices (25 × 18 multipliers) .........48
Embedded block RAM ...............3,456 kbits
NI 7854
FPGA type ..................................Virtex-5 LX110
Number of flip-flops ...................69,120
Number of 6-input LUTs ............69,120
Number of DSP48
slices (25 × 18 multipliers) .........64
Embedded block RAM ...............4,608 kbits
Timebase .........................................40, 80, 120, 160,
or 200 MHz
Level Min Max
Input low voltage (V
IL
)
Input high voltage (V
IH
)
0.0 V
2.0 V
0.8 V
5.5 V
Output low voltage (V
OL
),
where I
OUT
= –4 mA
Output high voltage (V
OH
),
where I
OUT
= 4 mA
0 V
2.4 V
0.4 V
3.3 V
Multifunction Reconfigurable I/O Specifications 6 ni.com
Timebase reference sources
PCI-781x/783x ............................Onboard clock only
PCIe-784x/785x ..........................Onboard clock only
PXI-78xx .....................................Onboard clock,
phase-locked to PXI
10 MHz clock
Timebase accuracy,
onboard clock ..................................±100 ppm, 250 ps
peak-to-peak jitter
Phase locked to PXI 10 MHz
Clock (PXI-78xx only) ....................Adds 350 ps
peak-to-peak jitter
Additional frequency-dependent peak-to-peak jitter
NI 781x/783x
40 MHz...................................None
80 MHz...................................400 ps
120 MHz.................................720 ps
160 MHz.................................710 ps
200 MHz.................................700 ps
NI 784x/785x
40 MHz...................................None
80 MHz...................................460 ps
120 MHz.................................172 ps
160 MHz.................................172 ps
200 MHz.................................152 ps
Calibration (NI 783x /784x /785x Only)
Recommended warm-up time .........15 minutes
Calibration interval..........................1 year
Onboard calibration reference
DC level ......................................5.000 V (±3.5 mV)
(actual value stored
in Flash memory)
Temperature coefficient..............±5 ppm/°C max
Long-term stability .....................±20 ppm/
Note Refer to Calibration Certificates at
ni.com/calibration to generate a calibration
certificate for the NI 78xx.
Bus Interface
PCI/PCIe/PXI.................................. Master, slave
Data transfers .................................. DMA, interrupts,
programmed I/O
Number of DMA channels.............. 3
Power Requirement
+5 VDC (±5%)
1
NI 781x ....................................... 9 mA typ
NI 7830/7831.............................. 330 mA typ
NI 7833....................................... 364 mA typ
PXI-7841/7851 ........................... 125 mA typ
PXI-7842/7852 ........................... 136 mA typ
NI 7853....................................... 460 mA typ
NI 7854....................................... 484 mA typ
+3.3 VDC (±5%)
2
NI 7811....................................... 650 mA typ
NI 7813....................................... 850 mA typ
NI 7830/7831.............................. 462 mA typ
NI 7833....................................... 727 mA typ
PCIe-7841/7851 ......................... 847 mA typ
PCIe-7842/7852 ......................... 984 mA typ
PXI-7841/7851 ........................... 525 mA typ
PXI-7842/7852 ........................... 604 mA typ
NI 7853....................................... 640 mA typ
NI 7854....................................... 843 mA typ
+12 V
NI 784x/785x .............................. 0.5 A
–12 V
PXI-784x/785x ........................... 0.25 A
+5V terminal
Connector 0 ................................ 0.5 A max
3
Connector 1 ................................ 0.5 A max
3
Connector 2 ................................ 0.5 A max
3
All connectors ............................ 1.5 A max
3, 4
1,000 h
1
Does not include current drawn from the +5 V line on the I/O connectors.
2
Does not include current sourced by the digital outputs.
3
(PCIe-78xx only) Total maximum terminal current for all connectors is 100 mA unless disk drive connector is attached.
4
(NI 784x /785x only) The NI 784x/785x has a user-replaceable socketed fuse that opens when current exceeds the current
specification. Refer to the Multifunction Reconfigurable I/O User Manual, available at
ni.com/docs, for information about
fuse replacement.
© National Instruments Corporation 7 Multifunction Reconfigurable I/O Specifications
To calculate the total current sourced by the digital outputs,
use the following equation:
Power available at I/O connectors
.. 4.50 to 5.25 VDC at 1 A
total, 250 mA per I/O
connector pin
Physical
Dimensions (not including connectors)
PCI-781x/783x............................ 17 cm by 11 cm
(6.7 in. by 4.3 in.)
PCIe-784x/785x .......................... 17 cm by 11 cm
(6.7 in. by 4.3 in.)
PXI-78xx..................................... 16 cm by 10 cm
(6.3 in. by 3.9 in.)
Weight
PCI-781x/783x............................ 112 g
PCIe-784x/785x .......................... 127 g
PXI-78xx..................................... 152 g
I/O connectors
NI 781x ....................................... Four 68-pin female
high-density VHDCI type
NI 7830....................................... Two 68-pin female
high-density VHDCI type
NI 783x/784x/785x ..................... Three 68-pin female
high-density VHDCI type
Disk drive power connector
(PCIe devices)................................. Standard ATX peripheral
connector (not serial
ATA)
Maximum Working Voltage
(NI 783x /784x /785x Only)
Maximum working voltage refers to the signal voltage plus the
common-mode voltage.
Channel-to-earth ............................. ±12 V, Measurement
Category I
Channel-to-channel......................... ±24 V, Measurement
Category I
Caution Do not use the NI 783x/784x/785x for
connection to signals in Measurement Categories II,
III, or IV.
Environmental
The NI 78xx is intended for indoor use only.
Operating Environment
NI 781x ............................................0 °C to 55 °C,
tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2.
NI 7830, NI 7831
40 MHz or 80 MHz timebase .....0 °C to 55 °C,
tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2.
PCI/PXI-7833
40 MHz timebase ........................0 °C to 55 °C,
tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2.
80 MHz timebase ........................0 °C to 55 °C except the
following: 0 °C to 45 °C
when installed in an
PXI-1000/B or
PXI-101X,
tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2.
PXI-7841/7842/7851/7852/7853/7854
40 MHz timebase ........................0 °C to 55 °C,
tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2.
80 MHz timebase ........................0 °C to 55 °C except the
following: 0 °C to 45 °C
when installed in an
PXI-1000/B or
PXI-101X,
tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2.
PCIe-7841/7842/7851/7852
40 MHz or 80 MHz timebase .....0 °C to 40 °C,
tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2.
Relative humidity range ..................10% to 90%,
noncondensing,
tested in accordance with
IEC-60068-2-56.
Altitude............................................2,000 m at 25 °C ambient
temperature
current sourced on channel i
i 1=
j