Schneider Electric Canada. XPSMCMCNSG - single backplane expansion connector to connect the expansion modules. Mouser is an authorized distributor for leading backplane connector manufacturers such as Amphenol, ERNI, FCI, HARTING, Hirose, ITT Cannon, Molex, Samtec, TE. LightCONEX optical plug-in and backplane module connectors from Smiths Interconnect are compatible with the VITA draft standard. UIWEBVIEW Demo programs have your installation succeeded in the same. Antivirus software products his fingernail and have been detected. For a limited at this URL:. Installation Summary Database.
Using the previous developed theoretical model the connector's performance can be examined in both the frequency and the time domain. Numerical calculations are performed for three types of existing connectors. This is an open access article distributed under the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Article of the Year Award: Outstanding research contributions of , as selected by our Chief Editors. Read the winning articles. Journal overview. Special Issues. Capsalis, 1 C. Chronopoulos, 1 J. Tigelis, 1 and N. Received 08 Oct Product Spotlight.
Buy Now Learn More. Adam-Tech Wire-to-Board Solutions. HD-BNC connectivity options for low loss cable. Module inserts provide EMC protection. CDM Electronics offers fibre optic interconnect solutions. Mach-D connectors from Positronic available. Quick lock connectors cope with harsh environments. Flameproof wirewound resistor series. Waterproof connector reduces battery charging design. Horizontal wire-to-board connectors for industrial and commercial applications.
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Please proceed to checkout before adding more items. Add to Cart. Subtotal :. View Cart Checkout. Explore Start your design quickly with our vast library of online resources and engineering support. Design Explore our products through a variety of digital resources, all openly available for download. First Name.
Last Name. Sign Up. Secured form. No spam. By signing up, you consent to the terms in our recently updated Privacy Notice and Policy Manual. Thanks For Signing Up. Check your inbox for details. Board-to-Board Connectors. Features Small form factor provides significant space savings Modular design provides flexibility in applications High-performance system High-density backplane system — up to 84 differential pairs per linear inch 1. ERM8 0. ERF8 0. ERM8-RA 0.
ERF8-RA 0. ERM8-EM 0. ERF8-EM 0. ERM8-S 0. ERF8-S 0. ERM5 0. ERF5 0. ERF5-RA 0. ERF6 0. ERM6 0. High-Speed 0. HTEC8 0. RU8 0. HSC8 0. MEC8-DV 0. MEC8-VP 0. MEC8-RA 0. MEC8-EM 0. MEC6-DV 0. MEC6-RA 0. MEC1 1. MEC1-RA 1. MEC1-EM 1. MEC2-DV 2. MEC5-RA 0. MEC5-DV 0. QRF8 0. QRM8 0. QRF8-DP 0. QRF8-RA 0. QRM8-DP 0. Early microcomputer systems like the Altair used a backplane for the processor and expansion cards. Backplanes are normally used in preference to cables because of their greater reliability.
In a cabled system, the cables need to be flexed every time that a card is added or removed from the system; this flexing eventually causes mechanical failures. A backplane does not suffer from this problem, so its service life is limited only by the longevity of its connectors. For example, DIN connectors used in the VMEbus system have three durability grades built to withstand respectively 50, and insertions and removals, or "mating cycles".
To transmit information, Serial Back-Plane technology uses a low-voltage differential signaling transmission method for sending information. In addition, there are bus expansion cables which will extend a computer bus to an external backplane, usually located in an enclosure, to provide more or different slots than the host computer provides.
These cable sets have a transmitter board located in the computer, an expansion board in the remote backplane, and a cable between the two. Due to limitations inherent in the Peripheral Component Interconnect PCI specification for driving slots, backplanes are now offered as passive and active.
True passive backplanes offer no active bus driving circuitry. Any desired arbitration logic is placed on the daughter cards. Active backplanes include chips which buffer the various signals to the slots. The distinction between the two isn't always clear, but may become an important issue if a whole system is expected to not have a single point of failure SPOF.
Common myth around passive backplane, even if it is single, is not usually considered a SPOF. Active back-planes are even more complicated and thus have a non-zero risk of malfunction. However one situation that can cause disruption both in the case of Active and Passive Back-planes is while performing maintenance activities i.
Therefore, we are seeing newer architectures where systems use high speed redundant connectivity to interconnect system boards point to point with No Single Point of Failure anywhere in the system. While there are a few motherboards that offer more than 8 slots, that is the traditional limit.
In addition, as technology progresses, the availability and number of a particular slot type may be limited in terms of what is currently offered by motherboard manufacturers. However, backplane architecture is somewhat unrelated to the SBC technology plugged into it. There are some limitations to what can be constructed, in that the SBC chip set and processor have to provide the capability of supporting the slot types.
In addition, virtually an unlimited number of slots can be provided with 20, including the SBC slot, as a practical though not an absolute limit. Some backplanes are constructed with slots for connecting to devices on both sides, and are referred to as midplanes. This ability to plug cards into either side of a midplane is often useful in larger systems made up primarily of modules attached to the midplane.
Midplanes are also popular in networking and telecommunications equipment where one side of the chassis accepts system processing cards and the other side of the chassis accepts network interface cards. Orthogonal midplanes connect vertical cards on one side to horizontal boards on the other side.
Modular backplane connector geforce 9800 gtMolex - Impel™ Backplane Connector and Cable Assembly System
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The standard LC connector includes a resilient latching arm having latching lugs on either side thereof for latching the connector to a standard adapter. In accordance with the present invention, the latching arm is shortened and has a lateral latching face on its distal end termination, and the latching lugs are removed. Thus, when the connector is inserted into the housing opening so that the latching arm rides in a channel, the connector rests upon the shelf and the latching ann, being resilient, intrudes into the latching aperture, thereby latching the connector in the housing.
In the embodiment discussed herein, the eight connectors may be inserted into the upper opening and eight in the lower and latched in place, with the sides of each of the connectors contacting the sides of adjacent connectors. Thus, there are no walls, ribs, or septa separating connectors from each other, and the connectors themselves provide alignment for adjacent connectors.
Only each of the individual latching arms, which is not as wide as the connector body, is separated from adjacent latching arms, while the channels perform an alignment function for an individual connector. The lower opening, being a mirror or inverted image of the upper opening also accommodates eight connectors in the same manner. As a consequence, the width of the connector housing is materially less than that of prior art devices. The width of the top and bottom frame openings is substantially equal to the sum of the widths of the maximum number of connectors that can be inserted, hence when all of the connector plugs are in place, they are restrained from any lateral movements or slippage.
Alternatively, the width of the opening is equal to the plug width times the number of channels. The adapter or receptacle for the connector is mounted on the backplane, and comprises a substantially rectangular housing having a rectangular opening into which the previously discussed connector housing fits. The opening has a vertical wall extending laterally within the opening from which extend two horizontal arrays of bored cylindrical bosses or protrusions which are adapted to receive and align the ferrules of the connectors when the connector housing is inserted into the receptacle.
Similarly, the rear wall the subscriber side of the backplane has two horizontal arrays of cylindrical bosses for receiving the ferrules of the LC connectors which distribute the individual communication channels to their proper destination. These connectors are mounted in a housing that is substantially identical to the previously described connector housing for the card or panel side. This connector housing is preferably integral with the adapter housing although it may be a separate component if desired.
A rectangular apertured mounting bracket receives the adapter housing which is latched thereto and which, in turn, is mountable on the backplane plate or panel. The embodiment of the invention as described in the foregoing has a footprint that is substantially less or smaller than that of prior art eight or sixteen connector arrangements, and consequently, does not require as much space or real estate on the PCB or on the backplane panel.
As a consequence, a much higher density of connections is available in less space. The unique construction, e. These and other principles and features of the present invention will be more readily apparent from the following detailed description, read in conjunction with the accompanying drawings. Each of the eight apertures 12 is adapted to receive a standard LC connector 13 which has a resilient cantilevered latching arm 14 , equipped with first and second latching lugs 16 and 17 which are adapted to latch to latching ridges 18 and 19 extending from the walls 21 of each of the apertures 12 when the connector 13 is inserted therein.
In the case where adapter 11 is mounted on the backplane, the connectors 13 are mounted on the PCB in a manner such as is shown in the Grimes et al patent, spaced to match the spacing of the apertures 12 in adapter As can be seen in FIG. Although other elements of the connection formed by connectors 13 and its mounting are not shown, it can be seen that the footprint of the adapter 11 , and hence, the corresponding holder for the connector 13 is so large as to limit the number of connections that can be made, without excessive intrusion on the available real estate of the PCB and of the backplane.
Inasmuch as adapter member 11 requires walls 21 to define the individual apertures 12 and to support the latching ridges 18 and 19 , thereby contributing to the width, limits are placed on the minimum footprint of the apparatus in order that proper seating and latching of the connector 13 can be made. In the ensuing discussion, the principles of the invention are illustrated in a sixteen apertured connector assembly 31 , but it is to be understood that more or fewer apertures may be used depending on the system requirements.
In order to achieve the desired results it has been necessary to modify the LC connector plugs, two of which, 32 , are shown, for use in the assembly Connector plug 32 is, for purposes of illustrating the principles of the invention, a modified LC type connector as shown in FIGS. Connector 32 comprises a body 33 and a boot portion 34 , with a fiber containing ferrule 36 extending from the front or connector end These are standard elements of a standard LC type connector, such as is shown in the aforementioned Grimes, et al.
However, the resilient latching arm 38 which is not as wide as the connector body is shorter than that of a standard LC connector, and the distal end thereof terminates in a straight, laterally extending latching face or surface In addition, the resilient arm has no latching lugs 16 and 17 in FIG. An apertured connector housing 41 for mounting on the leading end of a PCB 40 , shown in dashed lines, comprises a hollow rectangular body having a shelf 42 extending transversely from side to side across the opening of housing 41 approximately midway between the top 43 and bottom 44 thereof, thereby forming upper and lower openings 45 and At either end of the housing 41 are bored mounting bosses 46 and 47 for mounting the housing to the PCB as by bolts or the like.
On the under side surface of the top 43 are arrayed a plurality of spaced ribs or splines 48 , parallel to each other and extending from the front 49 to the back 51 of the top 43 and opening The spacing of the ribs 48 is such that they form an array of parallel channels 52 , each adapted to receive the latching arm 38 of a connector Thus, when a connector 32 is inserted into the top half 45 of the housing aperture, it is guided into position by the joint action of the channel 52 and the latching ann 38 , and rests upon the shelf As will be seen in subsequent figures, when eight connectors are inserted, their sides abut, there being no walls separating them.
Thus, when any two connectors are in place and are separated by a gap, they function, along with the channel in the gap, to guide the missing connector into place and, when all of the connectors 32 are in place, they occupy the top opening from side to side, thereby preventing lateral movements. Across the top 43 is an array of spaced rectangular apertures 53 , each one of which communicates with a channel When a connector is inserted into a channel far enough that the latching arm is directly below its gap, the arm, being resilient, and having been pressed down during insertion, springs upward into the gap, thereby latching the connector in position due to the latching surface 39 on arm 38 bearing against the end of its aperture.
The bottom half 50 of the housing aperture is a mirror image of the top half 45 , and includes ribs 48 and channels 52 which are, as shown, arrayed along the bottom surface of opening Likewise, the bottom surface 44 of housing 41 has an array of apertures 53 not shown , each of which communicates with a channel 52 in the same manner as explained in the foregoing.
In order that the leads from the PCB 40 may be connected to individual leads at the backplane 55 , as depicted by dashed lines, an adapter housing 56 is mounted on the backplane panel 55 for receiving the connector housing 41 and the ferrules 36 of the connectors 32 when the PCB 40 is inserted into its designated slot of the backplane assembly. Housing 56 has an aperture 57 on the conventionally designated cabinet side dimensioned to receive the connector housing A recessed wall 58 extends across the aperture 57 and has extending therefrom two rows or arrays 59 upper and 61 lower of cylindrical bosses or projections 62 which have longitudinal bores 63 forming sleeves for receiving the ferrules 36 of connectors In a like manner, the other side of wall 58 has two arrays of bored projections 62 aligned with the projections 62 on the first side of wall In actuality, and as will be seen in subsequent figures, the bored projections 62 extend through the wall The two end walls 64 and 66 of adapter housing 56 have first and second resilient latches 67 and 68 formed thereon for latching the adapter housing 56 to a mounting bracket 69 as will be discussed hereinafter.
First and second stop ridges 71 and 72 project from the top surface 73 of adapter housing 56 which function to locate and hold mounting bracket 69 in place, as will be apparent hereinafter. Adapter housing 56 has, extending from the rear 74 thereof on the conventionally designated subscriber side, a connector housing 76 which is substantially identical to connector housing 41 , previously described, having upper 77 and lower 78 arrays of channels not shown for receiving an upper array of connectors 32 and a lower array of identical connectors 32 , whose ferrules align with the ferrules of the connectors 32 on the PCB side of connector assembly 31 through the sleeves 63 formed by the bored bosses or projections Housing 76 also, in the same manner as connector housing 41 , has an array of apertures 53 for latching the rear or subscriber connectors 32 in place in housing 76 in the same manner as explained hereinbefore.
Mounting bracket 69 has an aperture 79 extending therethrough which is dimensioned and shaped to receive adapter housing 56 which is inserted therein until bracket 69 butts against stop members 71 and From each end wall 81 and 82 of bracket 69 extends a mounting ear 83 and 84 , each of which is bored to receive a bolt or other mounting member for affixing the bracket 69 , and hence the adapter housing 56 , latched to bracket 69 by means of latches 67 and 68 to the back plane panel It can be seen that each connector 32 in the top row is fitted into its own discrete channel 22 while the sides of the connectors 32 bear against each other.
Thus, the channels 22 serve to guide the connectors into place, while the connectors themselves hold the connectors from shifting laterally. It can be seen that the width of the upper opening 45 of the connector housing 41 is equal to the width of the array of connectors 32 inserted therein so that the sides of the connectors 32 , where installed, bear against each other and prevent lateral movement of the connectors in the array.
The same is true of the lower opening 50 and of the upper and lower openings not shown of the connector housing 76 mounted to the adapter housing 56 either integrally or as a separate part. When the connector is inserted into either of the connector housings 41 or 76 , the resilient latching arm 38 thereof is cammed downwardly until the arm 38 is located beneath the aperture 53 where it is free to spring upward into the aperture as shown in FIG.
Such a latching arrangement does not require the latching lugs 16 and 17 see FIG. As a consequence, the width or footprint of the connector assembly, i. Also, the two arrays of connectors as shown in connector housing 41 , for example, are only slightly greater in height than the adapter 11 shown in FIG.
The connector assembly of the invention therefore comprises less real estate for any given member of connectors, and makes feasible a material increase in the number of connectors that can be accommodated within the reduced area occupied by the connector assembly. It is to be understood that the various features of the present invention might readily be incorporated into other types of connector assemblies, and that other modifications or adaptations might occur to workers in the art.
All such variations and modifications are intended to be included herein as being within the scope of the present invention as set forth in the claims hereinafter. Table B Table B lists pinouts for connectors P1on the control shelf.
Row Alarm Connector Row Alarm Connector controls the alarm condition indicators on an end panel at the end of a set of the frames. External Alarm Connector External Alarm Connector is also used for alarm condition inputs from an optional holdover clock.
System Clock Connectors The control shelf backplane provides system clock output to the rest of the system from the TDMs. Serial Port Connectors The control shelf backplane provides an interface for 16 separate serial port connections from the TDMs. Interface Connectors For slots 1 through 8, 11, and 12 on the control shelf backplane, there are two associated DB interface connectors for each slot. Maintenance Disk and Alarm Connector. J-5 RALM0. J RALM0. J-6 B CLK 0. J-7 A CLK 0.
J CI. J RALM 1. J B CLK 2. J B CLK 1. J A CLK 2. J A CLK 1. J MMI 0. J MMI 1. J MMI 2. J MMI 3. J MMI 4. J MMI 5. J MMI 6. J MMI 7. J RALM2. J RMC. J RALM 3. J LMC. J RALM4. J B CLK4. J B CLK 4. J B CLK 3.
J A CLK 4. J A CLK 3. J RALM5. J B CLK 5. J A CLK 5. J MMI 8. J MMI 9. J MMI J GP J GPSI. J GPS1. J RALM7. Circuit Descriptions. Critical Alarm. Fuse Normally Closed. Minor Alarm. Major Alarm. Fuse Normally Open. P1 to top shelf in frame. P2 to middle shelf in frame. P3 to bottom shelf in frame. Not used. Signal return path. TX - TIP. RX - TIP.
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Modular backplane connector jdjAMP backplane connector repair without special tools (PWJ69)
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