PXIe-6591 Specifications

This document lists specifications for the PXIe-6591. Specifications are subject to change without notice.

Nominal and Characteristic specifications describe basic functions and attributes of the device established by design. Nominal and Characteristic values are not covered by warranty.

Caution The protection provided by the PXIe-6591 can be impaired if it is used in a manner not described in this document.

Revision History

Version	Date changed	Description
374635D-01	November 2025	Updated the pinout.
374635C-01	April 2025	Added the pinout.
374635B-01	January 2015	Updated the transmitter differential peak-to-peak voltage.
374635A-01	December 2014	Initial release.

PXIe-6591 Pinout

Use the pinout to connect to terminals on the PXIe-6591.

PXIe-6591 Front Panel and Pinout — Figure 1. PXIe-6591 Pinout

Front Panel Connectors

Port 0 and Port 1

Table 1. Port 0 Connector and Port 1 Connector
Data rate	500 Mbps to 8 Gbps and 9.8 Gbps to 12.5 Gbps, characteristic
Connector	Mini-SAS HD
Number of TX channels	8 (4 per port)
Number of RX channels	8 (4 per port)
Supported high speed cable type	Electrical/optical
Optical cable power	3.3V ± 5%, 1 A per port, characteristic
I/O AC coupling capacitor	100 nF

Note For detailed FPGA and High Speed Serial Link specifications, refer to Xilinx documentation.

TX Channel

Table 2. TX Channel Values
Minimum differential generation peak-to-peak voltage^[1]¹ When transmitter output swing is set to the maximum setting.	1,000 mV into 100 Ω, characteristic

RX Channel

Table 3. Differential Peak-to-Peak Input Voltage Range
Differential input resistance	100 Ω, nominal
≤6.6 Gb/s	150 mV to 2,000 mV, nominal
>6.6 Gb/s	150 mV to 1,250 mV, nominal

CLK IN/OUT

Table 4. CLK IN/OUT
Connector	SMA
Coupling	AC
Input impedance	50 Ω, nominal
Input frequency range	10 MHz to 500 MHz, characteristic
Input frequency accuracy tolerance	±100 ppm
Output impedance	50 Ω, nominal
Supported output amplitude (into high-impedance)	3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V
Maximum output frequency	156.25 MHz, characteristic

Table 5. Input Amplitude
Square wave	0.7 V_pp to 5 V_pp into 50 Ω, characteristic
Sine wave	1.4 V_pp to 5 V_pp into 50 Ω, characteristic

Digital Data & Control

Table 6. Digital Data & Control
Connector	VHDCI
Number of channels	20
Signal type	Single-ended
Tristate control	Per channel, dynamic
Supported voltage families	3.3 V, 2.5 V, 1.8 V, 1.5 V, and 1.2 V
Input impedance	50 kΩ, nominal
Input protection	-1 V to 5 V
Output impedance	50 Ω, nominal
Output protection	The device can indefinitely sustain a short to any voltage between 0 V and 5 V.
Maximum data rate	200 Mbps, characteristic

Multi-Gigabit Transceiver Reference Clock Generator

Table 7. Multi-Gigabit Transceiver Reference Clock Generator
Frequency range	60 MHz to 700 MHz, characteristic
Locking resources	PXIe_CLK100^[2]² Frequency accuracy is ±25 ppm, characteristic., PXIe_DStarA, CLK IN

Reconfigurable FPGA

Table 8. Reconfigurable FPGA
FPGA	Xilinx Kintex-7 XC7K410T
Package	FFG900
LUTs	254,200
Flip-flops	508,400
DSP48 slices (25 × 18 multiplier)	1,540
Embedded block RAM (kbits)	28,620
Data transfers	DMA, interrupts, programmed I/O
DMA interrupts	32 interrupt channels numbered 0-31

Onboard DRAM

Table 9. Onboard DRAM
Memory size	2 GB, single bank
Theoretical maximum data rate	10.5 GB/s

Bus Interface

Table 10. Bus Interface
Form factor	Gen 2×8 PXI Express, specification v1.0 compliant
Slot compatibility	×1, ×4, ×8, and ×16 PXI Express or PXI Express hybrid slots

Maximum Power Requirements

Note Power requirements are dependent on the adapter module and contents of the LabVIEW FPGA VI used in your application. Use a maximum total of 38.25 W from the backplane. Exceeding this amount may cause the FPGA to overheat and force the device into a power/thermal shutdown state.

Table 11. Maximum Power Requirements
+3.3 V	3 A
+12 V	3 A

Physical

Table 12. Physical Characteristics
Dimensions (not including connectors)	18.3 cm × 13.0 cm × 2.0 cm (7.4 in. × 5.1 in. × 0.8 in.) For more information, visit ni.com/dimensions and search by module number.
Weight	414 g (14.0 oz)

Environmental Guidelines

Notice This product is intended for use in indoor applications only.

Environmental Characteristics

Table 13. Temperature
Operating	0 °C to 45 °C
Storage	-40 °C to 71 °C

Table 14. Humidity
Operating	10% to 90% RH, noncondensing
Storage	5% to 95% RH, noncondensing

Table 15. Pollution Degree
Pollution Degree	2

Table 16. Maximum Altitude
Maximum altitude	2,000 m (800 mbar) (at 25 ºC ambient temperature)

Table 17. Shock and Vibration
Operating random vibration	5 Hz to 500 Hz, 0.3 g RMS
Non-operating random vibration	5 Hz to 500 Hz, 2.4 g RMS
Operating shock	30 g peak, half-sine, 11 ms pulse

Safety Compliance Standards

This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:

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

Note For 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
EN 55022 (CISPR 22): Class A emissions
EN 55024 (CISPR 24): Immunity
AS/NZS CISPR 11: Group 1, Class A emissions
AS/NZS CISPR 22: 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, certifications, and additional information, refer to Product Certifications and Declarations.

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)

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.)