PCIe-8398 Specifications

Conditions

These specifications are typical at 25 °C, unless otherwise stated, and are subject to change without notice.

PCIe-8398 Pinout

The MXI-Express Gen-3 x16 connectors are modular and can be cabled in several configurations. The hardware makes the configurations without user intervention. The configuration mechanism requires PCI Express cables, not the connector-compatible cables that other standards use. When multiple cables are used for a single link, the cables must be the same length.

Note National Instruments offers x8 cables. x16 connections require two cables, and the cables must connect the ports in ascending order. For example, ports 1-2 of a PCIe-8398 will connect to ports 1-2 of a PXIe-8398, and ports 3-4 will connect to 3-4.

For the PXIe-8399, connect daisy-chain ports 5 and 6 to ports 1 and 2 on the PXIe-8398 or PXIe-8399.

Port 1 of the PXIe-8398 and PXIe-8399 is upstream facing, meaning it is the link going toward the host. This means it is connected to a PXIe-8394, PCIe-8398, or a downstream facing port of a PXIe-8398 or PXIe-8399.

Ports 1-4 ordinarily are cabled to the host PC or the chassis containing the embedded controller. In this configuration, ports 1-4 form a x16 link, offering the highest throughput.

Ports 5-8 of a PXIe-8399 and ports 1-4 of a PXIe-8394 and PCIe-8398 are always downstream facing, meaning they may be connected only to additional chassis that are farther from the host. They ordinarily are connected to a single PXIe-8398 or PXIe-8399.

Ports 2, 3, and 4 of the PXIe-8398 and PXIe-8399 are upstream facing by default, but they change direction based on cabling. While they are normally used (along with port 1) to form a x16 upstream link, they may alternatively be connected to additional chassis, and they become downstream facing ports. There can be only one upstream facing link per chassis, but it may comprise one, two, or four ports to form a x4, x8, or x16 link.

The following table lists possible configurations.


Module	Configuration 1	Configuration 2	Configuration 3	Configuration 4
PCIe-8398^*	1-4: x16	1-2: x8 3-4: x8	1-2: x8 3: x4	1: x4 3: x4
PXIe-8394, PXIe-8398, PXIe-8399 ports 1-4	1-4: x16	1-2: x8 3-4: x8	1-2: x8 3: x4 4: x4	1: x4 2: x4 3: x4 4: x4
PXIe-8399 ports 5-8	5-8: x16	5-6: x8 7-8: x8	5-6: x8 7: x4 8: x4	5: x4 6: x4 7: x4 8: x4
^* The PCIe-8398 supports a maximum of two direct connections. Exceeding two direct connections may cause a system malfunction.

The flexible port configurations allow you to prioritize bandwidth (Configuration 1), high fanout (Configuration 4), or a blend of the two.

Physical

Dimensions	6.89 cm × 167.65 cm (2.71 in. × 6.60 in.)
Maximum cable length	3 m
Slot requirements	One slot (PCI Express x16)
Compatibility	Fully compatible with the PCI Express Specification, Revision 3.0
Weight	0.147 kg (0.325 lb) typical

Power Requirements


Power Rail	Typical Current	Maximum Current
+3.3 V	1.688 A	1.9 A
+3.3 V_AUX	40 mA	146 mA
+12 V	731 mA	1.6 A

Environment

Maximum altitude	2,000 m
Pollution Degree	2

Indoor use only.

Operating Environment

Ambient temperature range	0 °C to 55 °C (Tested in accordance with IEC-60068-2-1 and IEC-60068-2-2.)
Relative humidity range	10% to 90%, noncondensing (Tested in accordance with IEC-60068-2-56.)

Storage Environment

Ambient temperature range	-20 °C to 70 °C (Tested in accordance with IEC-60068-2-1 and IEC-60068-2-2.)
Relative humidity range	5% to 95%, noncondensing (Tested in accordance with IEC-60068-2-56.)

Note Clean the PCIe-8398 with a soft nonmetallic brush. Make sure that the device is completely dry and free from contaminants before returning it to service.

Safety

This product is designed to meet the requirements of the following standards of safety for information technology equipment:

IEC 61010-1, EN 61010-1
UL 61010-1, CSA C22.2 No. 61010-1

Note For UL and other safety certifications, refer to the product label or the Product Certifications and Declarations section.

Electromagnetic Compatibility

This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:

EN 61326-1 (IEC 61326-1): Class A emissions; Basic immunity
EN 55011 (CISPR 11): Group 1, Class A emissions
AS/NZS CISPR 11: Group 1, Class A emissions
FCC 47 CFR Part 15B: Class A emissions
ICES-001: Class A emissions

Note In the United States (per FCC 47 CFR), Class A equipment is intended for use in commercial, light-industrial, and heavy-industrial locations. In Europe, Canada, Australia, and New Zealand (per CISPR 11), Class A equipment is intended for use only in heavy-industrial locations.

Note Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical equipment that does not intentionally generate radio frequency energy for the treatment of material or inspection/analysis purposes.

Note For EMC declarations and certifications, and additional information, refer to the Online Product Certification section.

CE Compliance

This product meets the essential requirements of applicable European Directives, as follows:

2014/35/EU; Low-Voltage Directive (safety)
2014/30/EU; Electromagnetic Compatibility Directive (EMC)
2011/65/EU; Restriction of Hazardous Substances (RoHS)
2014/53/EU; Radio Equipment Directive (RED)
2014/34/EU; Potentially Explosive Atmospheres (ATEX)

Product Certifications and Declarations

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

Environmental Management

NI is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers.

For additional environmental information, refer to the Engineering a Healthy Planet web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

EU and UK Customers

Waste Electrical and Electronic Equipment (WEEE)—At the end of the product life cycle, all NI products must be disposed of according to local laws and regulations. For more information about how to recycle NI products in your region, visit ni.com/environment/weee.

电子信息产品污染控制管理办法（中国RoHS）

中国RoHS— NI符合中国电子信息产品中限制使用某些有害物质指令(RoHS)。关于NI中国RoHS合规性信息，请登录 ni.com/environment/rohs_china。(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)