Abstract: A receptacle for use with a receptacle connector mounted to a host circuit board within a chassis of a host system, the receptacle comprising: (a) a housing having a front, a back wall, a top wall, a bottom wall, and side walls and defining a cavity for receiving a module, the bottom wall having a bottom opening with the receptacle connector being disposed therein when the receptacle is mounted to the host circuit board, the back, top, and side walls defining planes which completely contain the receptacle when the receptacle is mounted to the host circuit board; and (b) a plurality of elongated members extending down from the housing past the bottom wall and adapted for electrical connection to the host circuit board such that the walls are electrically connected to the host circuit board.

Abstract: Transceiver receptacles (12a, 12b) are mounted on both sides of an intermediate circuit board (10). Each of the transceiver receptacles includes a host connector (14) disposed within a shielding cage (16). The host connector is electrically connected to the intermediate circuit board and is configured for electrically mating with a respective transceiver module (20), and the shielding cage is configured to receive and guide the respective transceiver module into mating engagement with the host connector. An electrically conductive bezel spacer (36) is disposed in gaps between the shielding cages to reduce propagation of electromagnetic interference. Mating connectors (41, 42) electrically connect the intermediate circuit board (10) to a main circuit board (40).

Abstract: A receptacle for receiving a module and electrically connecting said module to a host circuit board mounted within a chassis of a host system, said chassis having a bezel opening which has an offset a certain distance above said host circuit board: (a) a housing having a front, a back wall, a top wall, a bottom wall, and side walls and defining a cavity for receiving a module, the bottom wall having a bottom opening to receive a receptacle connector, the front having a front opening to receive the module, the walls comprising a conductive material; (b) a plurality of elongated members extending down from the housing past the bottom wall and adapted for electrical connection to a host circuit board such that the walls are electrically connected to the host circuit board; and (c) at least one standoff extending down from the housing, the standoff being more toward the front of the housing than the rear, when the housing is mounted to the host circuit board, the standoff contacts the circuit board and causes the

Abstract: A receptacle for a pluggable module includes a housing having a front, a back wall, a top wall, a bottom wall, and side walls and defining a cavity for receiving a module. The bottom wall has a bottom opening to receive a receptacle connector, and the front has a front opening to receive the module. The walls of the housing are made from a conductive material. A plurality of elongated members extend down from the housing past the bottom wall. The elongated members are adapted for electrical connection to a host circuit board such that the walls of the housing are electrically connected to the host circuit board.

Abstract: Transceiver circuitry (10, 200) for use in a GBIC module uses readily available off the shelf components to satisfy the specifications of the GBIC standard. In both passive and active modules, a voltage divider (98) and parallel transistors (94, 96, 100) are utilized to insure that the differential voltage of the received differential signal is at an acceptable level. In active modules, a diode cross over quad (84) is utilized to extend the input range of a low input differential receiver (78) and a coaxial cable driver (60) designed to drive 50 ohms is utilized to drive 150 ohms.

Abstract: Transceiver circuitry (10) for use in a GBIC module uses readily available off the shelf components to satisfy the specifications of the GBIC standard. A diode cross over quad (84) is utilized to extend the input range of a low input differential receiver (78). A voltage divider (98) and parallel transistors (94, 96, 100) are utilized to insure that the differential voltage of the received differential signal is at an acceptable level. A coaxial cable driver (60) designed to drive 50 ohms is utilized to drive 150 ohms.

Abstract: A receptacle for receiving a module and electrically connecting said module to a host circuit board mounted within a chassis of a host system, said chassis having a bezel which has an offset a certain distance above said host circuit board: (a) a housing having a front, a back wall, a top wall, a bottom wall, and side walls and defining a cavity for receiving a module, the bottom wall having a bottom opening to receive a receptacle connector, the front having a front opening to receive the module, the walls comprising a conductive material; (b) a plurality of elongated members extending down from the housing past the bottom wall and adapted for electrical connection to a host circuit board such that the walls are electrically connected to the host circuit board; and (c) at least one standoff extending down from the housing, the standoff being more toward the front of the housing than the rear, when the housing is mounted to the host circuit board, the standoff contacts the circuit board and causes the front o

Abstract: A receptacle for a pluggable module includes a housing having a front, a back wall, a top wall, a bottom wall, and side walls and defining a cavity for receiving a module. The bottom wall has a bottom opening to receive a receptacle connector, and the front has a front opening to receive the module. The walls of the housing are made from a conductive material. A plurality of elongated members extend down from the housing past the bottom wall. The elongated members are adapted for electrical connection to a host circuit board such that the walls of the housing are electrically connected to the host circuit board.

Abstract: Transceiver receptacles (12a, 12b) are mounted on both sides of an intermediate circuit board (10). Each of the transceiver receptacles includes a host connector (14) disposed within a shielding cage (16). The host connector is electrically connected to the intermediate circuit board and is configured for electrically mating with a respective transceiver module (20), and the shielding cage is configured to receive and guide the respective transceiver module into mating engagement with the host connector. An electrically conductive bezel spacer (36) is disposed in gaps between the shielding cages to reduce propagation of electromagnetic interference. Mating connectors (41, 42) electrically connect the intermediate circuit board (10) to a main circuit board (40).

Abstract: A shielding cover for a GBIC module (30) including a pair of cover parts (38, 40) formed with complementary features to surround a printed circuit board (32) of the module. A pair of latch members (42, 44) hold the two cover parts together and also provide a latching function when a module is inserted into a guide structure (12) mounted to a host board.

Abstract: A keying system for an electrical connector (10, 16) is disclosed. Keying members (160, 234) are provided in mating pairs so that one is assembled to the cable connector (10) and the other is assembled to the mating panel connector (16). Each of the keying members (160,234) is assembled by inserting it into the open end of the connector so that lugs (186,236) on the dielectric insert (44,218) within the connector enter camming slots (178) in the keying member (160,234) which is then twisted to lock it in place. The keying members can be easily and conveniently assembled and disassembled in the field by the end user.

Abstract: A connector for joining light transmitting fiber cables through a cover (14) to a transmitter and/or receiver device (3) comprises a plug half connector (6) comprising a plug (8) and a transceiver adapter (10). The plug (8) has profiled passageway (43) for receiving an optical fiber. The transceiver adapter (10) is an integral two-part structure comprising a transceiver shroud (11) adapted to axially receive the plug (8) and extending axially (38) for aligning the plug (8) forward relative to the transmitter and/or receiver device (3). The adapter (10) further comprises a latching beam mechanism (12) having forward extending latching beams (13), the latching beam mechanism (12) characterized by a wedge shaped plug stop (64) along each of the extending latching beams (13).

Abstract: A connector for joining light transmitting fiber cables through a cover (14) to a transmitter and/or receiver device (3) comprises a plug connector half (6) and a retention frame (48). The plug connector half (6) comprises a plug (8) having profiled passageway (43) for receiving an optical fiber, a transceiver adapter (10 ) adapted to axially receive the plug (8) through the cover (14) and extending forward axially (38) for aligning the plug (8) relative to the transmitter and/or receiver device (3). The retention frame (48) is mounted to the cover (14) and captivates the transceiver adapter (10) with play so as to permit free floating of the transceiver adapter (10) relative to the cover within the retention frame (48). The connector (7) is spring loaded by means of a flexion body (64) positioned between the cover (14) and the captivated transceiver adapter (10).

Abstract: A transceiver package (22) having a receptacle adapted to receive a connector (12) terminating a cable (18) having optical fibers; key element means (56) for being of varied width to fit a corresponding groove (13) of said connector (12) respective ports (70, 71) for mating with said connector (12); and functional parts of a transceiver including: a transmitter active device (191) and a receiver active device (190), integrated circuit substrate means (112), and posts (122, 124).

Abstract: A connector for joining light transmitting fiber cable through a cover (14) to a transmitter and/or receiver device (3) comprises a plug connector half (6) comprising a plug (3) and a transceiver adapter (10). The plug (8) has profiled passageway (43) for receiving an optical fiber. The transceiver adapted (10) is an integral two-part structure comprising a transceiver shroud (11) adapted to axially receive the plug (8) and extending axially (38) for forwardly aligning the plug (8) relative to the transmitter and/or receiver device (3). The adapter (10) further comprises a latching beam mechanism (12) having forward extending latching beams (13).

Abstract: A connector for joining light transmitting fiber cables through a cover (14) to a transmitter and/or receiver device (3) comprises a plug connector half (6) and a retention frame (48). The plug connector half (6) comprises a plug (8) having profiled passageway (43) for receiving an optical fiber, a transceiver adapter (10) adapted to axially receive the plug (8) through the cover (14) and extending axially for aligning the plug (8) forward relative to the transmitter and/or receiver device (3). The retention frame (48) is mounted to the cover (14) and captivates the transceiver adapter (10) with play so as to permit free floating of the transceiver adapter (10) relative to the cover within the retention frame (48).

Abstract: A method and apparatus for characterizing light emitting diodes (10) and PIN diodes (100) for coupled power degradation with varying offset is disclosed. An optical-electronic device such as a light emitting diode (10) or PIN diode (100) is scanned by an optical fiber (20) to obtain the output intensity of the LED (10) or the detection sensitivity of the PIN diode (100) as a function of position.