High-Speed Voltage Output – up to
1 MS/s/Channel, up to 16-Bit, up to 32 Channels
NI 673x, NI 671x, NI 672x
• Low-cost arbitrary
waveform generation
• High channel density
• Integrated multidevice
synchronization bus
• Easy real-time control with
LabVIEW Real-Time
• Digital triggering and
external clocking
• Simultaneous updates
• 8 digital I/O lines (TTL/CMOS)
• Two 24-bit counter/timers
• Measurement services that simplify
configuration and measurements
Recommended Software
• LabVIEW 7.x or higher
• LabWindows/CVI 7.x or higher
• Measurement Studio 7.x or higher
• Analog Waveform Editor
Other Compatible Software
• Visual Studio .NET
• Visual Basic, C/C++, and C#
Measurement Services
Software (included)
1
• NI-DAQmx driver
• Measurement & Automation
Explorer configuration utility
1
Mac OS X and Linux applications
must use NI-DAQmx Base driver software.
Operating Systems
• Windows 2000/NT/XP
• Mac OS X
• Linux
Calibration Certificate Available
Family
NI 6711
NI 6713
NI 6715
NI 6731
NI 6733
NI 6722
NI 6723
1
Bus
PCI, PXI
PCI, PXI
PCMCIA
PCI
PCI, PXI
PCI, PXI
PCI, PXI
Analog
Outputs
4
8
8
4
8
8
32
Update Rate
Per Channel (S/s)
1
1M
740 k to 1 M
100 k to 1 M
1M
740 k to 1 M
182 k to 800 k
45 k to 800 k
Output
Resolution
12
12
12
16
16
13
13
Output
Range (V)
±10
±10
±10
±10
±10
±10
±10
External Voltage
Reference
–
–
Digital I/O
8
8
8
8
2
8
2
8
8
Counters/
Timers
2, 24-bit
2, 24-bit
2, 24-bit
2, 24-bit
2, 24-bit
2, 24-bit
2, 24-bit
Triggering
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Update rate can vary depending on the number of channels used;
2
Static or hardware-timed pattern generation and acquisition up to 10 MHz
Table 1. High-Speed Voltage Output Product Selection Guide
Overview and Applications
National Instruments high-speed voltage output modules combine
the latest in PC technologies to deliver simultaneous, multichannel
updates for control and waveform output applications. Use these
modules in a variety of applications, including:
• Stimulus/response
• Power supply control
• High-speed, deterministic control
• Sensor/signal simulation
because you can define not only common waveforms such as square,
sine, or sawtooth but also complex waveforms. For instance, you are
able to create a sine wave that is overlaid with noise in which the
amplitude and noiseshape is user-defined. In practice, the waveform
is defined in a software buffer, within PC memory, and is streamed to
the voltage output device using DMA (direct memory access) data
transfers. Using DMA transfers, the amount of memory located
onboard the voltage output device is minimized and is swapped with
inexpensive PC memory.
Features
NI high-speed voltage output devices are versatile devices that
commonly replace several kinds of instruments including stand-
alone PID controllers, low-speed arbitrary waveform generators, and
function generators.
Real-Time Control
You can use NI high-speed voltage output devices with the LabVIEW
Real-Time Module to deliver real-time, deterministic control loop
execution. Because they are compatible with LabVIEW Real-Time,
common control algorithms, such as PID, are simple to implement
but, more importantly, you may prototype and implement complex
and cutting-edge control algorithms as well. High-performance
control, on the order of 8 PID loops running in excess of 20 kHz
each, is possible with this combination of hardware and software.
Each high-speed voltage output device offers multichannel
simultaneous updates and hardware-timed single-point updates.
Waveform Generation
These devices are capable of updating at rates up to 1 MS/s, giving
them the ability to generate waveforms up to 500 kHz. When using
these devices, you have complete control of each data point that is
updated on the output for each channel. This feature is significant
High-Speed Voltage Output – up to
1 MS/s/Channel, up to 16-Bit, up to 32 Channels
Multidevice Synchronization
Each high-speed voltage output device offers the ability to be master
or slave of a multidevice timing and triggering system. Use
integration technologies such as the RTSI bus, PXI trigger bus, and
PFI pins to trigger and synchronize to a wide variety of I/O types.
These I/O types range from analog input, image acquisition, motion
control, and high-speed digitizers to multifunction data acquisition
devices. With these integration infrastructures, you can create
powerful, custom test and control systems with ease.
AO_GND
NC
AO_GND
AO_GND
AO_6
1
AO_GND
AO_5
1
AO_GND
AO_GND
AO_3
AO_GND
AO_GND
AO_0
AO_1
EXTREF
PO4
D_GND
PO1
PO6
D_GND
+5 V
D_GND
D_GND
PFI_0
PFI_1
DBND
+5 V
D_GND
PFI_5/AO_SAMP_CLK
PFI_6/AO_START_TRIG
D_GND
PFI_9/CTR_0_GATE
CTR_0_OUTT
FREQ_OUT
1
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
NC
AO_GND
AO_GND
AO_7
1
AO_GND
AO_GND
NC
AO_GND
AO_4
AO_GND
AOGND
AO_2
AO_GND
AO_GND
AO_GND
D_GND
DIO0
PO5
D_GND
DIO2
PO7
PO3
NC
EXTSTROBE
D_GND
PFI_2
PFI_3/ CTR_1_SOURCE
PFI_4/ CTR_1_GATE
CTR_1_OUT
D_GND
PFI_7
PFI_8/CTR_0_SOURCE
D_GND
D_GND
Measurement Services Software
National Instruments measurement services software, built around
NI-DAQmx driver software, includes intuitive application
programming interfaces, configuration tools, I/O assistants, and
other tools designed to reduce system setup, configuration, and
development time. This software is included with your data
acquisition purchase. Helpful features include:
Automatic Code Generation
– DAQ Assistant is an interactive guide
that helps you navigate through configuring, testing, and programming
analog output tasks and automatically generates the necessary code
for LabVIEW, LabWindows/CVI, or Measurement Studio.
Cleaner Code Development
– Basic and advanced software functions
have been combined into one easy-to-use yet powerful set to help
you build cleaner code and move from basic to advanced
applications without replacing functions.
High-Performance Driver Engine
– NI-DAQmx delivers maximum
I/O system throughput with a multithreaded driver.
Test Panels
– With the Measurement & Automation Explorer
configuration utility, you can test all of your module functionality
before you begin development.
Scaled Channels
– Easily scale your voltage data into the proper
engineering units using the NI-DAQmx Measurement Ready virtual
channels by choosing from a list of common sensors and signals or
creating your own custom scale.
LabVIEW Integration
– All NI-DAQmx functions create the
waveform data type, which carries acquired data and timing
information directly into more than 400 LabVIEW built-in analysis
routines for display of results in engineering units on a graph.
No Connect on 6711 or 6731
Figure 1. NI 671x and NI 673x I/O Connector
Ordering Information
PCI
NI PCI-6711 ..................................................................777740-01
NI PCI-6713 ..................................................................777741-01
NI PCI-6722
1
................................................................778705-01
NI PCI-6723
1
................................................................778701-01
NI PCI-6731 ..................................................................778511-01
NI PCI-6733 ..................................................................778510-01
PXI
NI PXI-6711 ..................................................................777794-01
NI PXI-6713 ..................................................................777795-01
NI PXI-6722
1
................................................................778999-01
NI PXI-6723
1
................................................................778998-01
NI PXI-6733 ..................................................................778512-01
PCMCIA
NI DAQCard-6715 ........................................................778146-01
Includes data acquisition driver software.
1
Windows
only.
For more information on extended warranty and value-added
services, visit
ni.com/services
.
NI-DAQmx Base Driver
NI-DAQmx Base (available at
ni.com/downloads)
offers Mac OS X
and Linux users a programming interface similar to NI-DAQmx. It
includes ready-to-use LabVIEW VIs and C function features similar
to those included in NI-DAQmx driver software.
BUY NOW!
For complete product specifications, pricing, and accessory
information, call (800) 813 3693 (U.S. only) or go to
ni.com/dataacquisition
.
2
National Instruments • Tel: (800) 813 3693 • info@ni.com • ni.com
High-Speed Voltage Output – up to
1 MS/s/Channel, up to 16-Bit, up to 32 Channels
CH0
Amp
CH0
12-Bit DAC
CH1
Amp
CH1
12-Bit DAC
CH2
Amp
CH2
12-Bit DAC
CH3
Amp
CH3
12-Bit DAC
CONFIG
EEPROM
CIS
EEPROM
CH4
Amp
CH4
12-Bit DAC
Control/Data
I/O Connector
CH5
Amp
CH5
12-Bit DAC
AO
Control
FIFO
Data In
FPGA
Data
EEPROM
DAQ-STC Calibration
Interface Control
CH6
Amp
CH6
12-Bit DAC
Control
CH7
Amp
CH7
12-Bit DAC
DAC
FIFO
24
8
Calibration
DACs
Calibration
ADC
Analog Output
Timing/Control
PFI / Trigger
Timing
Trigger
Counter/
Timing I/O
Bus
Interface
Analog Input
Timing/Control
IRQ
RTSI Bus
Interface
Calibration
Mux
DAQ-STC
Digital I/O
Digital I/O (8)
+5 V
0.75 A
Figure 2. NI DAQCard-6715 Hardware Block Diagram
Data/Control
Digital
Thermometer
Control
CH0
Amp
CH0
CH0
Latch
Data
CH1
Amp
CH1
CH1
Latch
DAC
FIFO
Address
Generic Mini PCI
MITE Bus
Bus
Interface
Interface
Address/Data
Data
EEPROM
IRQ
I/O Connector
CH3/7
Amp
CH3/7
CH3/7
Latch
EEPROM
Control
AO
Control
AO Control
Calibration
Control
Register
Decode
FPGA
DMA/
IRQ
DAQ-STC
Bus
Interface
DMA
24
8
Calibration
DACs
Calibration
ADC
PFI / Trigger
Trigger
Counter/
Timing I/O
Digital I/O
Data
Calibration
Mux
Analog Output
Timing/Control
Bus
Interface
DMA/IRQ
RTSI Bus
Interface
+5 V
Timing
DAQ - STC
Analog Input
Timing/Control
Digital I/O (8)
1A
RTSI Bus
Note: CH4 through CH7 are found on 6713 and 6733 only
Figure 3. NI 671x and NI 673x Hardware Block Diagram
PCI/PXI/CompactPCI
PC Card (PCMCIA) Bus
DAC
Control
Bus
Interface
Bus
Interface
Address/Control
Data
National Instruments • Tel: (800) 813 3693 • info@ni.com • ni.com
3
High-Speed Voltage Output – up to
1 MS/s/Channel, up to 16-Bit, up to 32 Channels
Load DAC
13-Bit DAC
13-Bit DAC
13-Bit DAC
13-Bit DAC
13-Bit DAC
EEPROM
13-Bit DAC
I/O Connector
AO Data Bus
13-Bit DAC
Analog
Output
13-Bit DAC
Analog
Input
Power On
Reset
Misc
MITE
Interface
PCI
MITE
Generic
Bus
Interface
Control
PCI
Bus
Interface
Address/Data
FIFO
x4
1
x4
1
16-Bit ADC
Update,
Busy
Clear
PFI/Trigger
Trigger
Timing I/O
Digital I/O
Analog Output
Timing/Control
DAQ - STC
DMA/IRQ
DMA/IRQ
Bus
Interface
RTSI Bus
Interface
Timing
Digital I/O (8)
1
NI
PCI-6723 only
RTSI Bus
Figure 4. NI 672x Hardware Block Diagram
4
National Instruments • Tel: (800) 813 3693 • info@ni.com • ni.com
PCI Bus
FPGA
High-Speed Voltage Output – up to
1 MS/s/Channel, up to 16-Bit, up to 32 Channels
Specifications – NI 671x and NI 673x
These specifications are typical at 25 °C unless otherwise stated.
Specifications – NI 672x
These specifications are typical at 25
o
C unless otherwise stated.
Analog Output
Output Characteristics
Number of channels
NI 6715/6713/6733 ................................... 8 voltage outputs
NI 6711/6731............................................. 4 voltage outputs
Resolution......................................................... 12 bits, 1 in 4,096 (NI 671x),
16 bits, 1 in 65,536 (NI 673x)
Number of
Channels
1
2
3
4
5
6
7
8
1
These
Analog Output
Output Characteristics
Number of channels
NI 6722 ...................................................... 8 voltage outputs
NI 6723 ...................................................... 32 voltage outputs
Resolution......................................................... 13 bits, 1 in 8,192
Max update rate
Number of Channels
1
2
8
16
24
32
1
These
Maximum Update Rate (NI 671x/673x)
Using Local
Using Host
FIFO (kS/s)
1
Memory (kS/s)
2
1,000
1,000
1,000
1,000
1,000
1,000
1,000
1,000
1,000
1,000
952
1,000
833
869
740
769
Max Update Rate (NI 6715)
Using Local
Using Host
FIFO (kS/s)
1
Memory (kS/s)
2
1,000
800
850
400
750
266
650
200
600
160
550
133
510
114
480
100
Max Update Rate (kS/s)
Using Local FIFO
1
Using Host PC Memory
2
800
800
714
714
476
182
333
90.9
253
60
204
45
numbers apply to continuous waveform generation, which allows for the time it takes to reset the FIFO to the
beginning when cycling through it. This additional time is not incurred when using host PC memory for waveform generation.
The max update rate in FIFO mode does not change regardless of the number of devices in the system.
2
These
numbers apply to continuous waveform generation, and do not change irrespective of the number of devices
in the system.
2
These numbers may change when using more devices or when other CPU or bus activity is taking place.
results were measured using an NI 6722/6723 device with a 550 MHz Pentium III machine. These numbers may
change when using more devices or when other CPU or bus activity occurs.
FIFO buffer size
NI 6713/6733.............................................
NI 6711/6715/6731 ...................................
Data transfers ..................................................
DMA modes (PXI/PCI only)...............................
16,384 samples
8,192 samples
DMA, interrupts, programmed I/O
Scatter-gather
FIFO buffer size................................................. 2,048 samples
Data transfers .................................................. DMA, interrupts, programmed I/O
DMA modes ..................................................... Scatter gather
Voltage Output
Ranges.............................................................. ±10 V
Output coupling ................................................ DC
Protection ......................................................... Short-circuit to ground
Voltage Output
Ranges.............................................................. ±10.0 V, ±AO EXT REF
Output coupling ................................................ DC
Protection ......................................................... Short-circuit to ground
Digital I/O
Number of channels.........................................
Compatibility ....................................................
Power-on state .................................................
Data transfers ..................................................
8 input/output
TTL/CMOS
Input (high-impedance)
Programmed I/O
Digital I/O
Number of channels.........................................
Compatibility ....................................................
Power-on state .................................................
Data transfers ..................................................
Input buffer.......................................................
Output buffer ....................................................
Transfer rate .....................................................
8 input/output
5 V TTL/CMOS
Input (high-impedance)
Programmed I/O, DMA (NI 673x), interrupts (NI 673x)
2048 bytes (NI 673x)
2048 bytes (NI 673x)
10 Mwords/s (NI 673x)
Timing I/O
Number of channels
Up/down counter/timers ...........................
Frequency scaler........................................
Resolution
Up/down counter/timers ...........................
Frequency scaler........................................
Compatibility ....................................................
Digital logic levels
Level
Input low voltage
Input high voltage
Output low voltage (I
out
= 5 mA)
Output high voltage (I
out
= -3.5 mA)
2
1
24 bits
4 bits
5 V TTL/CMOS
Min
0.0 V
2.0 V
–
4.35 V
Max
0.8 V
5.0 V
0.4 V
–
Timing I/O
General-Purpose Up/Down Counter/Timers
Number of channels......................................... 2
Resolution......................................................... 24 bits
Compatibility .................................................... 5 V TTL/CMOS
Digital logic levels
Level
Input low voltage
Input high voltage
Output low voltage (I
out
= 5 mA)
Output high voltage (I
out
= -3.5 mA)
Minimum
0V
2V
–
4.35 V
Maximum
0.8 V
5V
0.4 V
–
Data transfers
Up/down counter/timers ........................... DMA (scatter-gather), interrupts, programmed I/O
Frequency scaler........................................ Programmed I/O
Base clocks available....................................... 20 MHz and 100 kHz
Data transfers .................................................. DMA (except NI 6715), interrupts, programmed I/O
DMA modes (PCI/PXI only)............................... Scatter-gather
Digital Trigger
Purpose
Analog Output ...........................................
Counter/timers...........................................
Source...............................................................
Compatibility ....................................................
Response ..........................................................
Start trigger, gate, clock
Source, gate
PFI <0..9>
5 V TTL
Rising or falling edge
Digital Trigger
Purpose
Analog output ............................................
General-purpose counter/timers ...............
Source...............................................................
Slope.................................................................
Compatibility ....................................................
Start trigger, gate, clock
Source, gate
PFI <0...9>, RTSI <0...6> (except NI 6715)
Positive or negative; software selectable
5 V TTL/CMOS
For more detailed specifications, please refer to the product manual.
National Instruments • Tel: (800) 813 3693 • info@ni.com • ni.com
5
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