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The NI PXIe-8135 is a modular PC in a PXI Express 3U-size form factor. The following figure is a functional block diagram of the NI PXIe-8135. Following the diagram is a description of each logic block shown.

Figure 1. NI PXIe-8135 Block Diagram
The NI PXIe-8135 consists of the following logic blocks on the CPU module and the I/O (daughter card) module. The CPU module has the following logic blocks:
  • The SO-DIMM block consists of two 64-bit DDR3 SDRAM sockets that can hold up to 8 GB each, for a total of 16 GB.

The NI PXIe-8135 removable hard drive variant has a single SDRAM socket, for a total of up to 8 GB.

  • The SMB to PXI Express Trigger provides a routable connection of the PXI Express triggers to/from the SMB on the front panel.
  • The ATI Radeon E4690 Embedded GPU drives the graphics.
  • The Watchdog Timer block consists of a watchdog timer that can reset the controller or generate a trigger.
  • The Intel 7 Series chipset connects to the PCI, USB, Serial ATA, ExpressCard, PXI Express, and LPC buses.
  • The USB Connectors connect the Intel 7 Series chipset to the Hi-Speed USB 2.0 interface and USB 3.0 interfaces.
  • The Serial ATA Hard Disk is a 250 GB or larger notebook hard disk. [1] The Serial ATA interface enables transfer rates up to 600 MB/s. The hard disk also supports Native Command Queuing.
  • The PXI Express Connector connects the NI PXIe-8135 to the PXI Express/CompactPCI Express backplane.
  • The Super I/O block represents the other peripherals supplied by the NI PXIe-8135. The NI PXIe-8135 has one serial port, and an ECP/EPP parallel port.
  • Both the 82579 and 82574 Gigabit Enet ports connect to either 10 Mbit, 100 Mbit, or 1,000 Mbit Ethernet interfaces. Both ports are housed in a dual stacked Ethernet connector.
  • The GPIB block contains the GPIB interface.
  • The ExpressCard/34 slot accommodates an ExpressCard/34 module.
  • 1 The extended-temperature, 24/7 option controller provides 80 GB hard drive.