PXIe-1085 Specifications

PXIe-1085 Specifications

These specifications apply to the PXIe-1085 model.

Revision History

Version Date changed Description
376797B-01 October 2025 Added front and rear chassis views.
376797A-01 December 2016 Initial release.
373712G-01 October 2015 Original specifications document: NI PXIe-1085 Series User Manual.

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Chassis Components

Use the diagrams to locate the key features of the PXIe-1085 chassis front and back panels.

Figure 1. Front View of the PXIe-1085


  1. Chassis Carry Handle
  2. Backplane Connectors
  3. 10 MHz REF OUT SMA
  4. 10 MHz REF IN SMA
  5. PXI Filler Panels
  6. Chassis Model Name
  7. Removable Feet
  8. PXI Express Hybrid Peripheral Slots (16x)
  9. PXI Express System Timing Slot
  10. PXI Express System Controller Slot
  11. Temperature, Fan, and Power LEDs
  12. Power Inhibit Switch
  13. System Controller Expansion Slot
Figure 2. Rear View of the PXIe-1085


  1. Universal AC Input
  2. Push-Reset Circuit Breaker
  3. Remote Inhibit and Voltage Monitoring Connector
  4. Ethernet Port
  5. Inhibit Mode Selector Switch
  6. Fan Speed Selector Switch
  7. Chassis Ground Screw
  8. Power Supply Shuttle Mounting Screws (8x)
  9. Power Supply Shuttle Handle (2x)
  10. Power Supply Shuttle
  11. Fan Module (3x)

Electrical

The following section provides information about the PXIe-1085 AC input and DC output.

AC Input

Table 1. AC Input Characteristics
Input voltage range 100 V AC to 240 V AC
Operating voltage range 90 V AC to 264 V AC
Input current rating 12 A to 6 A
Input frequency 50/60 Hz
Operating frequency range 47 Hz to 63 Hz
Over-current protection 15 A circuit breaker
Efficiency 70% typical
Power disconnect The AC power cable provides main power disconnect. Do not position the equipment so that it is difficult to disconnect the power cord. The front-panel power switch causes the internal chassis power supply to provide DC power to the CompactPCI/PXI Express backplane. You also can use the rear-panel 8-pin connector and inhibit mode switch to control the internal chassis power supply.
Note The operating voltage range and operating frequency range are guaranteed by design.
Table 2. Line Regulation
3.3 V <±0.2%
5 V <±0.1%
±12 V <±0.1%

DC Output

Table 3. DC current capacity (Imp)
Voltage PXIe-1085 12 GB/s Maximum Current PXIe-1085 24 GB/s Maximum Current
+3.3 V 60 A 60 A
+5 V 44 A 49 A
+12 V 62 A 62 A
-12 V 4 A 4 A
5 VAUX 2 A 2 A
Note Maximum total usable power for the PXIe-1085 12 GB/s is 791 W. Maximum total usable power for the PXIe-1085 24 GB/s is 775 W.
Table 4. Backplane Slot Current Capacity
Slot +5 V V (I/O) +3.3 V +12 V -12 V 5 VAUX
System Controller Slot 15 A — 15 A 30 A — 1 A
System Timing Slot — — 6 A 4 A — 1 A
Hybrid Peripheral Slot with PXI-1 Peripheral 6 A 5 A 6 A 1 A 1 A —
Hybrid Peripheral Slot with PXI-5 Peripheral — — 6 A 4 A — 1 A
PXI-1 Peripheral Slot 6 A 11 A 6 A 1 A 1 A —
Note Total system slot current must not exceed 45 A.
Note PCI V(I/O) pins in PXI-1 peripheral slots and hybrid peripheral slots are connected to +5 V.
Note The maximum power dissipated in the system slot must not exceed 140 W.
Note The maximum power dissipated in a peripheral slot must not exceed 38.25 W.
Table 5. Load Regulation
Voltage Load Regulation
+3.3 V <5%
+12 V <5%
+5 V <5%
-12 V <5%
Table 6. Maximum Ripple and Noise (20 MHz Bandwidth)
Voltage Maximum Ripple and Noise
+3.3 V 50 mVpp
+12 V 50 mVpp
+5 V 50 mVpp
-12 V 50 mVpp
Table 7. Power Supply Protection and Serviceability
Over-current protection All outputs protected from short circuit and overload with automatic recovery
Over-voltage protection (3.3 V and 5 V) Clamped at 20% to 30% above nominal output voltage
Power supply shuttle MTTR Replacement in under 5 minutes

Remote Inhibit and Voltage Monitoring Connector

Table 8. Fault Output Signal
VOH 3.8 V (IOH = -8 mA)
VOL 0.44 V (IOH = 8 mA)
Table 9. Inhibit Input Signal
VIH 3.5 V (minimum)
VIL 1.5 V (maximum)
Note Internal 10 kΩ pull-up to 5 VAUX.

Chassis Cooling

Table 10. Chassis Cooling Characteristics
Module cooling system Forced air circulation (positive pressurization) through three 169 cfm fans with High/Auto speed selector
Slot airflow direction Bottom of module to top of module
Module cooling intake Bottom rear of chassis
Module cooling exhaust Along both sides and top of chassis
Power supply cooling system Forced air circulation through two integrated fans
Power supply cooling intake Right side of chassis
Power supply cooling exhaust Left side of chassis

Acoustic Emissions

Sound Pressure Level (at Operator Position)

Table 11. Sound Pressure Level
Auto fan (up to ~30 °C ambient) 51.2 dBA
High fan 64.1 dBA

Sound Power

Table 12. Sound Power
Auto fan (up to ~30 °C ambient) 60.8 dBA
High fan 75.9 dBA
Caution The protection provided by the PXIe-1085 Series can be impaired if it is used in a manner not described in this document.

Backplane

Table 13. Backplane Characteristics
Size 3U-sized; one system slot (with three system expansion slots) and 17 peripheral slots. Compliant with IEEE 1101.10 mechanical packaging. PXI Express Specification compliant. Accepts both PXI Express and CompactPCI (PICMG 2.0 R 3.0) 3U modules.
Backplane bare-board material UL 94 V-0 Recognized
Backplane connectors Conforms to IEC 917 and IEC 1076-4-101, UL 94 V-0 rated

10 MHz System Reference Clock: PXI_CLK10

Table 14. PXI_CLK10 Characteristics
Maximum slot-to-slot skew 500 ps
Accuracy ±25 ppm maximum (guaranteed over the operating temperature range)
Maximum jitter 5 ps RMS phase-jitter (10 Hz to 1 MHz range)
Duty-factor 45% to 55%
Unloaded signal swing 3.3 V ±0.3 V
Note For other specifications, refer to the PXI-1 Hardware Specification.

100 MHz System Reference Clock: PXIe_CLK100 and PXIe_SYNC100

Table 15. PXIe_CLK100 and PXIe_SYNC100 Characteristics
Maximum slot-to-slot skew 100 ps
Accuracy ±25 ppm max (guaranteed over the operating temperature range)
Maximum jitter 3 ps RMS phase-jitter (10 Hz to 12 kHz range)

2 ps RMS phase-jitter (12 kHz to 20 MHz range)
Duty-factor for PXIe_CLK100 45% to 55%
Absolute differential voltage (When terminated with a 50 Ω load to 1.30 V or Thévenin equivalent) 400 mV to 1000 mV
Note For other specifications, refer to the PXI-5 PXI Express Hardware Specification.

External 10 MHz Reference Out

Note Accessed through the 10 MHz REF OUT SMA on the front panel of the chassis.
Table 16. External 10 MHz Reference Out Characteristics
Accuracy ±25 ppm max (guaranteed over the operating temperature range)
Maximum jitter 5 ps RMS phase-jitter (10 Hz to 1 MHz range)
Output amplitude 1 VPP ±20% square-wave into 50 Ω, 2 VPP unloaded
Output impedance 50 Ω ±5 Ω

External Clock Source

Note Accessed through the the system timing slot PXI_CLK10_IN or the 10 MHz REF IN SMA on the front panel of the chassis.
Table 17. External Clock Source Characteristics
Frequency 10 MHz ±100 ppm
Front panel SMA input amplitude 200 mVPP to 5 VPP square-wave or sine-wave
System timing slot PXI_CLK10_IN input amplitude 5 V or 3.3 V TTL signal
Front panel SMA input impedance 50 Ω ±5 Ω
Maximum jitter introduced by backplane 1 ps RMS phase-jitter (10 Hz to 1 MHz range)

PXIe_SYNC_CTRL

Table 18. PXIe_SYNC_CTRL Characteristics
VIH 2.0 V to 5.5 V
VIL 0 V to 0.8 V

PXI Star Trigger

Table 19. PXI Star Trigger Characteristics
Maximum slot-to-slot skew 250 ps
Backplane characteristic impedance 65 Ω ±10%
Note For other specifications, refer to the PXI-1 Hardware Specification.

PXI Differential Star Triggers (PXIe-DSTARA, PXIe-DSTARB, PXIe-DSTARC)

Table 20. PXIe-DSTARA, PXIe-DSTARB, PXIe-DSTARC Characteristics
Maximum slot-to-slot skew 150 ps
Maximum differential skew 25 ps
Backplane differential impedance 100 Ω ±10%
Note For other specifications, the PXIe-1085 complies with the PXI-5 PXI Express Hardware Specification.

Mechanical

Table 21. Chassis Dimensions
Height 6.97 in. (177.1 mm)
Width 18.30 in. (464.8 mm)
Depth 19.38 in. (492.3 mm)
Table 22. Physical Characteristics
Weight 40.3 lb (18.28 kg)
Chassis materials Sheet Aluminum (5052-H32, 5754-H22), Extruded Aluminum (6063-T5, 6060-T6), Plate Aluminum (6063-T5, 6061-T6), Cold Rolled Steel, Cold Rolled Stainless Steel, Sheet Copper (C110), Santoprene, Urethane Foam, PC-ABS, Nylon, Polycarbonate, Delrin, Polyethylene, Polyamide (FR-106), Neodymium Magnet
Finish Conductive Clear Iridite on Aluminum, Electroplated Nickel on Cold Rolled Steel, Electroplated Zinc on Cold Rolled Steel, Electroplated Nickel on Copper

The following figures show the PXIe-1085 chassis dimensions. The holes shown are for the installation of the optional rack mount kits. You can install those kits on the front or rear of the chassis, depending on which end of the chassis you want to face toward the front of the instrument cabinet. Notice that the front and rear chassis mounting holes (size M4) are symmetrical.

Figure 3. PXIe-1085 Chassis Dimensions (Front and Side)


Figure 4. PXIe-1085 Chassis Dimensions (Bottom)


Figure 5. NI Chassis Rack Mount Kit Components


  1. Front Rack Mount Kit
  2. PXIe-1085 Chassis
  3. Rear Rack Mount Kit

Environmental

Table 23. Environmental Characteristics
Maximum altitude 2,000 m (800 mbar) (at 25 °C ambient)
Pollution Degree 2

Indoor use only.

Table 24. Operating Environment
Ambient temperature range 0 °C to 55 °C
Relative humidity range 10% to 90%, noncondensing
Table 25. Storage Environment
Ambient temperature range -40 °C to 71 °C
Relative humidity range 5% to 95%, noncondensing

Shock and Vibration

Table 26. Shock and Vibration
Operational shock 30 g peak, half-sine, 11 ms pulse
Random vibration, operating 5 Hz to 500 Hz, 0.3 grms

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 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:

  • 2006/95/EC; 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.)