Slot Types Accept PXI and PXI Express Modules

This chassis enables higher-bandwidth systems and provides the flexibility you need to work with both PXI and PXI Express modules. There are a total of nine PXI Express slots and eight PXI hybrid-compatible slots.

The PXI Express system slot offers four x4 PCI Express links (up to 1 GB/s single direction per link) to four switches. Each switch provides a x4 PCI Express link to four or five peripheral slots. Also, each slot is capable of up to 1 GB/s per-direction dedicated bandwidth; however, if more than one device is connected to the same PCI Express backplane switch, 1 GB/s is shared among those devices.

There are also two x1 PCI Express links to two PCI Express-to-PCI translation bridges on the backplane. The PXI Express system timing slot accepts a PXI Express module or a PXI Express system timing controller for advanced timing and synchronization. The eight PXI Express hybrid slots deliver connectivity to either a x4 PCI Express link or to the 32-bit, 33 MHz PCI bus on the backplane.

Optimized Cooling and Acoustic Emissions

The NI PXIe-1075 chassis integrates three pulse-width modulation (PWM) system fans to provide forced-air cooling that meets the increased cooling demands of PXI Express and CompactPCI Express. The NI PXIe-1075 offers a HIGH fan setting to maximize cooling at any ambient temperature and an AUTO fan setting to minimize acoustic emissions at ambient temperatures below 30 °C. The chassis monitors air intake temperature and adjusts fan speed accordingly. With this technology, the NI PXIe-1075 achieves acoustic noise levels as low as 45 dBA (sound pressure level measured at operator position according to ISO 7779). 

PXI Timing and Synchronization

For PXI modules, the NI PXIe-1075 backplane is fully compliant with PXI timing and synchronization standards. The chassis includes a 10 MHz reference clock with an accuracy of ±25 parts per million (ppm), less than 5 ps jitter, and a maximum slot-to-slot skew of 500 ps. For triggering and handshaking needs, the NI PXIe-1075 offers the PXI trigger bus and PXI star trigger. PXI modules should be designed for use in PXI hybrid-compatible slots. Contact your local NI representative if you have any concerns.

For PXI Express modules, in addition to PXI timing and synchronization features, the NI PXIe-1075 backplane supplies a differential 100 MHz reference clock with an accuracy of ±25 ppm, less than 3 ps jitter, and a maximum slot-to-slot skew of 100 ps. The chassis also provides differential star triggers to the PXI Express slots to offer less than 200 ps intermodule skew. With the SYNC 100, a peripheral module installed in the NI PXIe-1075 can generate its own CLK10 signal, deriving it from the 100 MHz reference clock.

Software System Configuration 

The NI PXIe-1075 chassis is configured with NI Measurement & Automation Explorer (MAX). With this software configuration tool, you can easily configure NI PXIe-1075 systems without time-consuming manual installation of initialization files. MAX creates the pxisys.ini file that defines the layout and parameters of your PXI system including chassis, controller, and plug-in modules.

Replaceable Power Supply Shuttle 

This chassis include a removable high-performance universal AC power supply with built-in overcurrent protection. An isolated 12 VDC line provides power to the cooling fans, significantly reducing electrical noise on the chassis backplane. The NI PXIe-1075 incorporates the power supply and fans into a single modular unit that you can replace quickly, resulting in a mean time to repair (MTTR) of less than five minutes.

External 10 MHz Reference Clock I/O Connectors

This  chassis include IN/OUT BNC connectors for the 10 MHz reference clock on the rear of the chassis. When the backplane detects a 10 MHz signal on the IN connector, it phase locks PXI_CLK10, PXIe_CLK100, and PXIe_SYNC100 to the external clock. The OUT connector provides a buffered, non-TTL version of the 10 MHz reference clock.

Remote Power Inhibit and Monitoring 

The NI PXIe-1075 chassis features remote power inhibit and voltage monitoring through a DB-9 connector on the rear of the chassis. Use this connector to switch off power or monitor the power remotely in the chassis.

Power Supply, Temperature, and Fan Monitoring

The NI PXIe-1075 chassis monitors power supply voltages, air intake temperature, and fan speeds; and provides any failure feedback to the user via a bicolor LED located in the power switch button on the front of the chassis