摘要:
Methods and systems for providing crosstalk compensation in a jack are disclosed. According to one method, the crosstalk compensation is adapted to compensate for undesired crosstalk generated at a capacitive coupling located at a plug inserted within the jack. The method includes positioning a first capacitive coupling a first time delay away from the capacitive coupling of the plug, the first capacitive coupling having a greater magnitude and an opposite polarity as compared to the capacitive coupling of the plug. The method also includes positioning a second capacitive coupling at a second time delay from the first capacitive coupling, the second time delay corresponding to an average time delay that optimizes near end crosstalk. The second capacitive coupling has generally the same overall magnitude but an opposite polarity as compared to the first capacitive coupling, and includes two capacitive elements spaced at different time delays from the first capacitive coupling.
摘要:
The invention relates to a plug-in connector (1), comprising a housing, a printed circuit board (2) and RF contacts (K1-K8), the RF contacts (K1-K8) being electrically connected to the printed circuit board (2), the RF contacts (K1-K8) being formed by an integral, flexible printed circuit board (4), from which the individual contacts (K1-K8) are cut free, the flexible printed circuit board (4) being prestressed by a spring-elastic element (6).
摘要:
A power line communications coupler for effecting signal coupling between electric signalling equipment and an electric power system, said coupler including a fuse coupleable to a power line of said electric power system; and a signal coupler in electrical communication with said fuse and being couplable to said signalling equipment.
摘要:
A cable management frame assembly comprising a collapsible frame chassis and a plurality of positionally configurable cable management fixtures that can be affixed to the frame chassis without the use of tools or additional hardware such screws, nuts or bolts. A panel mount allows patch panels and equipment to be mounted to the frame chassis without the use of tools or additional hardware.
摘要:
An electrical connector for transmitting data signals between the insulated conductors of a first data cable and corresponding insulated conductors of a second data cable, including a first part having a socket shaped to at least partially receive a plug of said first data cable; a second part having a plurality of insulation displacement contact slots shaped to receive end sections of the conductors of the second data cable; and a plurality of electrically conductive contacts including resiliently compressible spring finger contacts extending into the socket for electrical connection with corresponding conductors of the first cable; insulation displacement contacts seated in corresponding insulation displacement contact slots for effecting electrical connection with corresponding conductors of the second data cable; and mid sections extending therebetween, wherein mid sections of the contacts are seated in corresponding channels.
摘要:
A connecting strip (1) for telecommunications and mid-range communications technology includes a housing (2) and at least two contact elements (11). The contact element (11) includes a first contact (12) for the connection of wires or cables and a second contact (13) for contacting a printed circuit board. The second contact (13) takes the form of a press-fit pin contact or a tuning-fork contact. The first contact (12) is aligned towards the upper side (3) of the housing (2) and the second contact (13) is aligned towards the underside (4) of the housing (2). The first contacts (12) are arranged laterally offset from the longitudinal axis (L) of the housing (2).
摘要:
Methods and systems for compensating for crosstalk in a telecommunications jack are disclosed. One method includes manufacturing a circuit board having a zone of crosstalk compensation between a first wire pair and a second wire pair, the zone of crosstalk compensation including a capacitive coupling connected between the first wire pair and the second wire pair and a second capacitive coupling selectively connectable in parallel with the capacitive coupling. The method further includes determining a crosstalk value generated by the jack including the manufactured circuit board. The method also includes, upon determining that the crosstalk value is outside of a crosstalk pass band, adjusting the zone of crosstalk compensation by altering an electrical connection between the second capacitive coupling and the capacitive coupling after the circuit board has been manufactured.
摘要:
A cable connector (1) for printed circuit boards includes a housing (2, 3) and at least two contact elements (4). Each contact element includes a contact (11) for connecting electrical wires and a fork contact (6, 7) for making contact with a printed circuit board. A surge arrester (17) is arranged within the housing (2, 3) and is arranged electrically between the contact elements (4).
摘要:
A wire-guiding element (60) includes a lower part (40) and an upper part (50). The lower part (40) is formed in the longitudinal direction (L) with guides (46), which are formed between guide webs (45). Clamping ribs (47) are arranged on inner sides of the guide webs (45), and have first fixing means on the upper side (44). The upper part (50) has second fixing means on its lower side (51), which produce a connection with the first fixing means.
摘要:
The invention relates to a strain relief device (1) for at least one glass fiber cable (45), comprising a base body (10) and at least one clamping element (30), the base body (10) having at least one through-opening (14) for leading through at least one glass fiber cable (45), which through-opening extends from a front side (V) of the base body (10) to a rear side (R) of the base body (10), a head part (13) with at least one slit (18) being arranged on the rear side (R) of the base body (10), and at least one deflecting element (20) being arranged on an outer surface of the base body (10), and the clamping body (30) being detachably connected to the base body (10).