Agilent Technologies E8401A Manual de usuario descargar pdf (Pagina 5)

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SUPERIOR DATA THROUGHPUT

When the VT1432 series was rst introduced to the market, it became the gold standard for large

scale NVH applications due in part to its ability to throughput large data sets from the measurement

hardware to a PC for display, storage and analysis. Typical max throughput with any slot 0 interface

is 5Mbytes/sec, but when using the VT2216 throughput disk, 16.4 MB/s could be moved to the

controller.

By leveraging the switched serial architecture that is at the core of the PXI Express backplane

in combination with the EMX-2500 LAN interface, the EMX series is capable of moving 90 MB/s

between the instrumentation and the host. For applications in which the channel count and

sample rate combination exceeds 90 MB/s, a cabled PCIe interface can be swapped in place of

the EMX-2500, without requiring change in application code, to achieve up to 200 MB/s to disk. This

provides engineers the ability to construct large channel count, high sample rate systems without

the risk of overowing on-board memory. Table 7 presents a throughput comparison between the

VT1432 and EMX series for an application requiring 100,000 samples/second.

Conguration Max Throughput Sample Rate Bytes/Sample Max Channels

VT1432 4.9 MB/s 102,400 Sa/s 4 (24-bit) 11

VT1432+VT2216 16.4 MB/s 102,400 Sa/s 4 (24-bit) 40

EMX-4250 + EMX-2500 90 MB/s 102,400 Sa/s 4 (24-bit) 219*

EMX-4250 + Cabled PCIe 200 MB/s 102,400 Sa/s 4 (24-bit) 488**

*With LAN as the intfrastructure you can sum the output from multiple mainframes by using an Ethernet switch with more

bandwidth (10 Gig or 40 Gig) for truly unlimited throughput capability.

**Exceeds the number of channels (256) that can be accommodated in a single mainframe.

IEEE-1588 Snychronization

<100 ns accuracy

CMX09 +

EMX2500

CAT5e

Host PC

LAN Switch

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Agilent Technologies E8401A Manual de usuario Pagina 5