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  2. Registered jack - Wikipedia

    en.wikipedia.org/wiki/Registered_jack

    Similar to RJ31X, with a continuity circuit. If the plug is disconnected from the jack, shorting bars allow the phone circuit to continue to the site phones. Only 4 conductors are used. RJ41S 8P8C, keyed For one data line, universal (fixed loop loss and programmed) RJ45S 8P8C, keyed For one data line, with programming resistor RJ48C 8P4C

  3. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may vary from country to country, or engineering ...

  4. Wiring diagram - Wikipedia

    en.wikipedia.org/wiki/Wiring_diagram

    These details may not be so easily found on a more schematic drawing. A wiring diagram is a simplified conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal connections between the devices.

  5. Electrical connector - Wikipedia

    en.wikipedia.org/wiki/Electrical_connector

    The registered jack or modular jack in RJ11, RJ45 and other similar connectors used for telecommunications and computer networking The telephone jack of manual telephone switchboards , which is the socket fitting the original 1 ⁄ 4 inch (6.35 mm) telephone plug

  6. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    Socket connector for another item not P or J, paired with the letter symbol for that item (XV for vacuum tube socket, XF for fuse holder, XA for printed circuit assembly connector, XU for integrated circuit connector, XDS for light socket, etc.) X, XTAL, Y: Crystal, ceramic resonator, powered oscillator: ZD: Zener diode: often changed to "D ...

  7. Ethernet over twisted pair - Wikipedia

    en.wikipedia.org/wiki/Ethernet_over_twisted_pair

    Symbol rate per lane (MBd) Bandwidth (MHz) [C] Max distance (m) Cable [D] Cable rating (MHz) Intended usage StarLAN-1 1BASE5: 802.3e-1987: obsolete 1 2 1 1 PE 1 1 250 voice grade ~12 LAN: StarLAN-10 802.3e-1988: obsolete 10 2 1 1 PE 10 10 ~100 voice grade ~12 LAN LattisNet: pre 802.3i-1990: obsolete 10 2 1 1 PE 10 10 100 voice grade ~12 LAN ...

  8. ANSI/TIA-568 - Wikipedia

    en.wikipedia.org/wiki/ANSI/TIA-568

    ANSI/TIA-568 is a technical standard for commercial building cabling for telecommunications products and services. The title of the standard is Commercial Building Telecommunications Cabling Standard and is published by the Telecommunications Industry Association (TIA), a body accredited by the American National Standards Institute (ANSI).

  9. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    A less common symbol is simply a series of peaks on one side of the line representing the conductor, rather than back-and-forth. Wire crossover symbols for circuit diagrams. The CAD symbol for insulated crossing wires is the same as the older, non-CAD symbol for non-insulated crossing wires. To avoid confusion, the wire "jump" (semi-circle ...