VME & VXS Backplanes

The VMEbus is designed for 19-inch rack technology and supports bus lengths of up to 21 slots.

In this system, slot 1 is on the left of the rack, with the rest of the bus extending to the right. The daughter boards are connected to the backplane with 96-pin connectors to DIN 41612. Three configurations of the VMEbus are available for different applications: J1-plane, J2-plane and J1/J2-Monolithic.

VME64x is an extension of the VME64 standard ANSIVITA 1-1994 and permits 64-bit data traffic. It defines a set of features that can be added to VME and VME64 boards, backplanes, and subracks. The major new features include expanded 160-pin P1/J1 and P2/J2 connectors, an optional 95-pin (2-mm hard metric P0/J0 connector) for more user-defined I/O, +3.3 V and auxiliary power voltage, plus more +5 V power. The VME64x system is downward-compatible, so that assemblies with 96-pin connectors to DIN 41612 can still be used.

Mechanical aspects of VME64x include support for EMC protection, ESD protection, solder side covers, an injector/extractor handle with locking, and board keying to specific subrack slots.

VITA 31.1 defines a pinout and interconnection methodology for implementing a 10/100/1000BASE-T Ethernet switched network on a VME64x backplane. The PICMG 2.16 Packet Switched backplane specification adds a switched network based on Gigabit Ethernet to cPCI backplanes. The cPCI P3 connector has two Gigabit Ethernet ports for improved performance and redundancy. The VME64x P0 connector is identical to the cPCI P3 connector and has the same placement on the backplane. VITA 31.1 adopts the PICMG 2.16 P3 connector pinout for use on VME64x boards. It also adopts the definition of the fabric card described in PICMG 2.16. PICMG 2.16 compliant systems and VITA 31.1 systems can use the same switched fabric boards.

50510-xxx-xxx0VMEbus J1 Classic
40510-xxx-3xx0VMEbus J2 Classic
30510-xxx-xxx0VMEbus Monolithic Classic
32x20-2xx-0x60VME64x 6U
32x10-2xx-0060VME64x 7U
021-980VITA 31.1 Gigabit Ethernet on VME64x

Click here for a catalogue of all backplane products from Elma (2.9 MB download).

This is an illustrative sample of the products we have available. Feel free to contact us at sales@redlinx·co·za for information on more options to meet your requirements.

50510-xxx-xxx0: VMEbus J1 Classic

The basic configuration is the 3U high (Single Eurocard) J1 plane. This plane provides all the address, data and control lines, and is fully capable of operating as a standalone bus.

Key features:

  • Various daisy-chain solutions
  • Configured for “high-power” applications (different solutions)
  • 8-layer construction
  • Optimum separation of signal lines on inner layers
  • Characteristic impedance 55Ohm ±10%
  • Inboard termination (active/passive)
  • Basic current consumption:
    • 20mA for active termination
    • 1.2A for passive termination
  • Minimum GND-Shift due to low inductance current distribution with high surface capacity
  • Effective decoupling to enhance dynamic current response
  • Sense signals via fastons
  • PCB height: 129.5 mm
  • PCB thickness: 3.2 mm
  • Connector for status signals (Fail, Reset, GND, +5V)
  • Part number of mating connector including 1.0m cable, open end: 002-858
  • Service life (MTBF according to MIL-HDBK 217F):
    • 5 slot : 1 564 000 h
    • 21 slot : 467 000 h

40510-xxx-3xx0: VMEbus J2 Classic

For larger computer structures, the basic configuration can be extended with a second plane, the J2 plane, also 3U high. It lies directly below the J1 plane in the 19-inch rack and extends the data and address space of the computer system. In addition, the user is provided with 64 freely-definable inputs/outputs per slot, which can be connected using interconnection points on the rear of the backplane.

The J2 plane is only used as an extension of the VMEbus from the J1-plane and cannot be operated as a standalone bus.

Key features:

  • Configured for “high-power” applications (different solutions)
  • 4-layer construction
  • Optimum separation of signal lines on inner layers
  • Characteristic impedance 55Ohm ±10%
  • Inboard termination (active/passive)
  • Basic current consumption:
    • 20mA for active termination
    • 0.3A for passive termination
  • Minimum GND-Shift due to low inductance current distribution with high surface capacity
  • Effective decoupling to enhance dynamic current response
  • Optional latchable shrouds with ejectors with interlock facility to hold I/O plug securely
  • Part number of ejectors:
    • 017-815 10x Type C (black)
    • 017-816 10x Type R (green)
  • PCB height: 129.5 mm
  • PCB thickness: 3.2 mm

30510-xxx-xxx0: VMEbus Monolithic Classic

Monolithic backplanes combine the J1 and J2 planes of the VMEbus on a single printed circuit board. Preference should be given to these PCBs for new designs which access the J2 plane.

Because of its continuous power supply layers, the monolithic backplane is superior to two separate J1 and J2 planes, particularly with respect to dynamic current distribution.

Key features:

  • Various daisy-chain solutions
  • Configured for “high-power” applications (different solutions)
  • 8-layer construction
  • Optimum separation of signal lines on inner layers
  • Characteristic impedance 55Ω ±10%
  • Basic current consumption:
    • 20mA for active termination
    • 1.5A for passive termination
  • Minimum GND-Shift due to low inductance current distribution with high surface capacity
  • Effective decoupling to enhance dynamic current response
  • Sense signals via fastons
  • PCB height: 262.9 mm
  • PCB thickness: 3.2 mm
  • Connector for status signals (Fail, Reset, GND, +5V)
  • Part number of mating connector including 1.0m cable, open end: 002-858
  • Optional latchable shrouds with ejectors with interlock facility to hold I/O plug securely
  • Part number of ejectors:
    • 017-815 10x Type C (black)
    • 017-816 10x Type R (green)
  • Service life (MTBF according to MIL-HDBK 217F):
    • 5 slot 1 042 000 h
    • 21 slot 345 000 h

32x20-2xx-0x60: VME64x 6U

Key features:

  • Automatic active daisy chain
  • Configured for “normal range” power supply
  • Power input: M3/M4 power bolts (M3/M4 cable lugs, washers and nuts enclosed)
  • 10-layer construction
  • Passive inboard termination (basic current consumption 1.5A)
  • Mounting holes for optional connection to Chassis GND
  • Assembly with/without P0 connectors
  • Characteristic impedance 55Ω ±10%
  • Effective decoupling of the DC voltages far beyond 1GHz (act as EMI-filter)
  • PCB height: 262.9 mm
  • PCB thickness: 4.6 mm
  • Connector for status signals “FCON”
  • Part number of mating connector including 1.0m cable, open end: 008-083
  • Service life (MTBF, MIL-HDBK 217F)
    • 5 slot 447 000 h
    • 21 slot 135 000 h

32x10-2xx-0060: VME64x 7U

Key features:

  • Automatic active daisy chain
  • Configured for “high-power” applications (rails with connections M8/M6/M4)
  • Ideal for plugging of Rear Transition Cards
  • 10-layer construction
  • Passive inboard termination (basic current consumption 1.5A)
  • Mounting holes for optional connection to Chassis GND
  • Assembly with/without P0 connectors
  • Characteristic impedance 55Ω ±10%
  • Minimized crosstalk
  • Effective decoupling of DC voltages far beyond 1GHz (act as EMI-filter)
  • Mechanical compliant to ANSI/IEEE 1101
  • PCB height: 306.07 mm
  • PCB thickness: 4.5 mm
  • Connector for status signals “FCON”
  • Part number of mating connector including 1.0m cable, open end: 008-083
  • Service life (MTBF, MIL-HDBK 217F)
    • 5 slot : 447 000 h
    • 21 slot : 135 000 h

021-980: VITA 31.1 Gigabit Ethernet on VME64x

Key features:

  • 10/100/1000BASE-T Ethernet switched network on a VME64x backplane
  • 2 redundant VITA 31.1 Fabric Slots, right side of backplane
  • 6 VITA 31.1 Node Slots
  • Switches 100% compatible to PICMG 2.16
  • Standard VME64x / cPCI connectors
  • Automatic active Daisy Chain
  • Passive inboard termination (basic current consumption 1.5A)
  • Power input: M3/M4 power bolts (M3/M4 cable lugs, washer and nuts enclosed)
  • 10-layer construction
  • ANSI/VITA 1.1-1997 VME64x Standard compliant
  • According to VITA 1.7 Increased Current Level For 96 Pin & 160 Pin DIN/IEC Connector
 
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