Transfer Rates - National Instruments NI 6602 User Manual

Chapter 2 Device Overview

Transfer Rates

Note The maximum sustainable transfer rate is always lower than the peak transfer rate.
Buffer Size (Samples)
100
1,000
10,000
100,000
Buffer Size (Samples)
100
1,000
10,000
100,000
default
NI 660x User Manual
The maximum sustainable transfer rate a TIO device can achieve for a
buffered acquisition depends on the following factors:
• Amount of available bus bandwidth
• Processor speed and operating system
• Application software
To reduce the amount of bus activity, limit the number of devices
generating bus cycles. Because direct-memory access (DMA) transfers are
faster than interrupt-driven transfers, NI-DAQmx uses DMA by default for
buffered acquisitions.
Table 2-1 lists the maximum transfer rates for TIO devices.
Table 2-1. Maximum Transfer Rates
DMA
.Finite Operation
Rate (kS/s)
5,000
2,150
1,600
1,350
Continuous Operation
Rate (kS/s)
44
202
212
245
212
Buffer Size (Samples)
100
1,000
10,000
100,000
Buffer Size (Samples)
100
1,000
10,000
100,000
default
2-8
Interrupt
Rate (kS/s)
77
77
77
77
Rate (kS/s)
7
46
75
76
75
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