PXIe-8521 Specifications

This document lists specifications for the PXIe-8521 4-port, 100BASE-T1 PXI Automotive Ethernet interface module.

PXIe-8521 Definitions

Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.

Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

  • Typical specifications describe the performance met by a majority of models.
  • Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.

Values are Typical unless otherwise noted.

Conditions

Specifications are typical at 0 °C to 55 °C unless otherwise noted.

Notice The terminals or pins of this device are not protected from electromagnetic interference. As a result, this device may experience reduced measurement accuracy or other temporary performance degradation when connected cables are routed in an environment with radiated or conducted radio frequency electromagnetic interference.

PXIe-8521 Pinout

Figure 1. PXIe-8521 Pinout


Table 1. PXIe-8521 Pinout Signal Descriptions
Pin Number Signal Type Signal Direction Signal Description Signal Required
1 TRX_P Bi-directional Transceiver plus Required
2 TRX_M Bi-directional Transceiver minus Required
3 Shield — Shield Optional

Bus Interface

Form factor Gen 2 x4 PXI Express, specification rev 1.0 compliant
Slot compatibility x1, x4, x8 and x16 PXI Express or PXI Express hybrid slots

Power Requirements

Voltage (V) Current (A), Maximum (Typical)
+3.3 1.03 (0.64)
+12 1.32 (1.10)

Physical Characteristics

Dimensions (not including connectors) 16 cm x 10 cm (6.0 in. x 3.9 in.) 3U CompactPCI slot
Weight 170 g (6.0 oz)
Ports 4, 100BASE-T1
I/O connectors Weidmuller BLF 3.50, 3-position
LED indicators 1 Link/Activity LED and 1 Status LED for each port
Table 2. Spring Terminal Wiring
Wire gauge 0.14 mm2 (26 AWG) to 1.5 mm2 (16 AWG)
Wire strip length 8 mm (0.3 in.) of insulation stripped from the end
Ferrules 0.14 mm2 (26 AWG) to 1.5 mm2 (16 AWG), 8 mm barrel length
Table 3. Connector Securement
Securement type Screw flanges provided
Torque for screw flanges 0.2 N · m to 0.25 N · m (1.8 lb · in. to 2.2 lb · in.)
Note Refer to the PXIe-8521 User Manual for additional information about I/O connectors and ferrules (included).

Network Interface

Port configuration 2 Taps or 4 endpoints
Tap latency 1.73 µs maximum
Protocols IEEE 802.3 Raw Ethernet, TCP/IP, UDP/IP, AVB (IEEE 802.1Qav, AVTP), IEEE 802.1AS
Note For information about using Taps and endpoints, refer to the PXIe-8521 User Manual.

Timing and Synchronization

Table 4. Network Timekeeping
Timing and synchronization protocol 802.1AS
Network synchronization accuracy < 1 µs
Table 5. Timebases
Local 100 MHz, shared by all ports, disciplined by PXI_Clk10 if available
Network x4 125 MHz, 1 per port, independently disciplined by an external grand master (port is configured as a slave) or the local timebase (port is configured as a master)
Note If the port is configured as a slave and is not connected to an 802.1AS network, the network timebase falls back to local time.
Trigger I/O source PXI_Trig <0:7>
Table 6. Input Trigger Capability
Timestamps
Note Each timestamp can be triggered by any PXI_Trig <0:7>.
 x4 Timestamps, one per port; each captures both local time and network time.
Note If no external network is available, use local time instead.
Table 7. Output Trigger Capability
Time triggers x4 Time triggers, one per port; generated from local time or network time
Clocks
  • x4 1 MHz, one per port; 50% duty cycle; each disciplined by network time
  • x4 1 Hz PPS (pulse per second), one per port; 50% duty cycle; each disciplined by network time
Note Clock outputs and time triggers can be exported on any PXI_Trig<0:7>.

Environmental Guidelines

Notice Indoor use only.

Environmental Characteristics

Table 8. Operating Environment
Ambient temperature range 0 °C to 55 °C
Relative humidity range 10% to 90%, noncondensing
Altitude 2,000 m (800 mbar) at 25 °C ambient temperature
Pollution Degree 2
Table 9. Storage Environment
Ambient temperature range -40 °C to 71 °C
Relative humidity range 5% to 95%, noncondensing
Table 10. Shock
Operational shock 30 g peak, half-sine, 11 ms pulse
Table 11. Random Vibration
Operating 5 Hz to 500 Hz, 0.3 grms
Nonoperating 5 Hz to 500 Hz, 2.4 grms