Appendix A
Specifications
6711/6713/6715 User Manual
A-2
www.ni.com
Max update rate
Type of DAC ..........................................Double buffered, multiplying
(6711/6713)
Serial, multiplying (6715)
FIFO buffer size
6711 .................................................8,192 samples
6713 .................................................16,384 samples
6715 .................................................8,192 samples
Data transfers ..........................................DMA (6711/6713 only),
interrupts, programmed I/O
DMA modes ...........................................Scatter gather (6711/6713 only)
Number of
Channels
Max Update Rate (6711/6713)
Max Update Rate (6715)
Using Local
FIFO (kS/s)
1
Using Host PC
Memory (kS/s)
2
Using Local
FIFO (kS/s)
Using Host PC
Memory (kS/s)
3
1
1000
1000
1000
800
2
1000
1000
850
400
3
1000
1000
750
266
4
1000
1000
650
200
5
1000
1000
600
160
6
952
1000
550
133
7
833
869
510
114
8
740
769
480
100
1
These 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, about 200 ns, is not incurred when using host PC memory for
waveform generation. Max update rate in FIFO mode will not change irrespective of the number of devices in the system.
2
These results were measured using one PCI-6711/6713 device with a 90 MHz Pentium machine. These numbers may
change when using more devices or when other CPU or bus activity is taking place.
3
These results were measured using one DAQCard-6715 with a 266 MHz Pentium II machine. These numbers may change
when using more devices or when other CPU or bus activity is taking place.
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