NI PXIE-8394 is a PXI Express peripheral bus-extension module designed for MXI-Express Gen3 x8 multichassis expansion and daisy-chain PXI connectivity.
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Key product information and technical features.
NI PXIE-8394 is an NI PXI Express bus extension module for peripheral-side MXI-Express Gen3 x8 expansion. NI identifies the model as a “PXIe, x8, Gen 3 MXI-Express Daisy-Chain Interface, PXI Bus Extension Module,” confirming it as a primary hardware module rather than a cable accessory. In an NI PXI system, it serves as the peripheral-side interface for multichassis expansion and can be used to daisy chain up to eight PXI chassis to the same system computer.
The module uses a PXI Express bus connector and provides MXI-Express Gen3 x8 communication with up to 7.9 GB/s theoretical bandwidth. NI’s specifications page lists four front-panel MXI-Express Gen-3 x16 ports. The PXIe-8394 requires one peripheral slot in a PXI Express or CompactPCI Express chassis, and NI’s installation documentation states it is compatible with Peripheral and Hybrid PXI Express chassis slots, not the controller slot.
Physical and operating characteristics are documented by NI for integration planning. The PXIe-8394 measures 10.7 cm × 17.5 cm and has a typical weight of 0.35 kg. NI specifies power requirements of +3.3 V at 150 mA typical / 250 mA maximum, +12 V at 850 mA typical / 2200 mA maximum, and +5 Vaux at 5 mA typical / 15 mA maximum. Supported operating conditions are 0 °C to 55 °C and 10% to 90% noncondensing humidity.
Verified product specifications.
| Commercial orderable part number | 785157-01 |
|---|---|
| Bus connector | PXI Express |
| MXI communication level | MXI-Express Gen3 x8 |
| Theoretical bandwidth | 7.9 GB/s |
| Front-panel ports | 4 MXI-Express Gen-3 x16 ports |
| Slot requirement | One peripheral slot (PXI Express or CompactPCI Express) |
| Dimensions | 10.7 × 17.5 cm |
| Dimensions | 4.4 × 6.9 in. |
| Weight | 0.35 kg typical |
| Weight | 0.76 lb typical |
| Maximum copper cable length | 3 m |
| Maximum fiber-optic cable length | 100 m |
| Supported cable types | Copper; Fiber Optic |
| Power requirement +3.3 V | 150 mA typical / 250 mA maximum |
| Power requirement +12 V | 850 mA typical / 2200 mA maximum |
| Power requirement +5 Vaux | 5 mA typical / 15 mA maximum |
| Operating temperature | 0 to 55 °C |
| Operating humidity | 10% to 90%, noncondensing |
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Manufacturer
Platform
PXI Express bus extension module
MXI-Express Gen3 x8
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Product-specific answers based on available technical information.
NI identifies the PXIe-8394 as a “PXIe, x8, Gen 3 MXI-Express Daisy-Chain Interface, PXI Bus Extension Module.”
NI states the PXIe-8394 can be used to daisy chain up to eight PXI chassis to the same system computer.
According to NI installation documentation, the PXIe-8394 is compatible with Peripheral and Hybrid PXI Express chassis slots, and it is not for the controller slot.
NI specifies copper cable lengths up to 3 m and fiber-optic cable lengths up to 100 m.