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(Chapter 1: Principles of transmission) Synchronous is performed by synchronizing the data bits in phase or in UNISON with equally spaced clock signals or pulses. No start stop signals. (Pg. 1-43) (Chapter 1: Principles of transmission) Asynchronous Carries start and stop signals and popular with microcomputers. (Pg. 1-43) ( Chapter 1: Principles of transmission) What Multiplexes electrical signals to separate optical wavelengths at the source that are sent along one optical fiber to its receiver at the opposite end. Wavelength division multiplexing (WDM) (Chapter 1: Principles of Transmission) What Combines binary data from several different sources into a single COMPOSITE BIT STREAM? Time Division Multiplexing (TDM). (Pg. 1-32) (Chapter 1: Principles of Transmission) How is frequency measured? Hertz (Pg. 1-18) (Chapter 1: Principles of transmission )What are the key factors in determining which optical fiber to use ? 1. Active Equipment. 2. Distance. 3. Bandwidth. (Pg. 1-94) (Chapter 1: Principles of Transmission) The N.E.X.T loss is dominated by components in the near zone less than ? 66 Feet (Chapter 1: Principles of Transmission) When cable shields are properly terminated, bonded, and grounded they ? 1. Reduce the radiated signal from the cable. 2. Reduce the effects of electrical hazards. 3. Minimize the effect of external E.M.I on the conductors within the shielded cable. (Pg. 1-13) (Chapter 1: Principles of transmission) What is the Center wavelength of Laser ? 1310 nm and 1550 nm (Chapter 1: Principles of transmission) What is the Center wavelength of Short Wavelength Laser ? 780 nm (Pg. 1-89) (Chapter 1: Principles of transmission) What is the Center wavelength of L.E.D ? 800 nm through 900 nm 1250 nm through 1350 (Pg. 1-88) (Chapter 2: Electromagnetic Compatibility) Electrical fast transient disturbances are created when inductive and capacitive circuits are switched on and off over operation cycle. (Pg. 2-26) (Chapter 2: Electromagnetic Compatibility): What is the Definition of Electromagnetic interference A.K.A E.M.I ? Radiated or conducted electromagnetic energy that has an undesirable effect interference (EMI) on electronic equipment or signal transmissions. (Chapter 2: Electromagnetic Compatibility) Transient Disturbances A.K.A electrical surges are short duration current, voltage, or power on low voltage electrical power lines. (Pg. 2-27) (Chapter 2: Electromagnetic Compatibility) What is the definition of Ground Loop ? Describes two parallel paths that have identical conductive terminations to two separate grounding references. ( Chapter 2: Electromagnetic Compatibility) What are the 3 types of E.S.D ? 1. Discharge Through a spark in the air. 2. Radiated effects of E.S.D. 3. Contact Discharge. (Pg. 2-21) (Chapter 2: Electromagnetic Compatibility) What are the Methods used to suppress or prevent unwanted signals ? 1. Filtering. 2. Shielding. 3. Bonding and Grounding of cable shields and equipment. (Pg. 2-20) (Chapter 2: Electromagnetic Compatibility) Electromagnetic spectrum in order of wavelength size, Smallest to Largest. Gamma Rays, X rays, ultraviolet, visible light, infrared, microwaves, and radio ( Chapter 2: Electromagnetic Compatibility) C.M.R.R for high quality chokes is ? 40 dB ( Chapter 2: Electromagnetic Compatibility) Branch circuits need no separation if ? Less than 5 kVA (Chapter 2: Electromagnetic Compatibility): What is the Definition of E.S.D ? A natural phenomenon in which accumulated electric charges are discharged. (2-21) (Chapter 2: Electromagnetic Compatibility): How Does Radiated interferences enter electronic devices? 1. Proximity to interfering sources. 2. Missing or inadequate gaskets or enclosures. 3. Missing or inadequate bonding or grounding. 4. Missing or inadequate device or shielding. (Pg. 2-3) (Chapter 3: Telecommunication Spaces) What is the acceptable humidity level in an Equipment Room ? 60% (Chapter 3: Telecommunication Spaces) Location of T.R Vertically aligned, loadbearing wall, and solely for Telecommunication equipment. (Pg. 3-12) (Chapter 3: Telecommunication Spaces) Liquid Carrying pipes Shall not be routed through, above, or in the walls encompassing telecommunication spaces. (Chapter 3: Telecommunication Spaces) Same floor T.R Sleeve count and size ? 1 trade size 3 or 78 millimeter conduit (Pg. 3-6) (Chapter 3: Telecommunication Spaces) T.R Minimum height ? 8 feet Minimum but B.I.C.S.I recommends 10 Feet (Pg.3-4) (Chapter 3: Telecommunication Spaces) T.R Sleeves Recommended minimum amount? 4 (Pg. 3-6) (Chapter 3: Telecommunication Spaces) What is the Equipment Room HVAC sensor placement height ? 5 feet above finished floor (Pg. 3-56) (Chapter 3: Telecommunication Spaces) What is allowed to be located in the equipment room ? 1. B.A.S 2. Cross Connect 3. Active Equipment which includes power conditioning and backup systems, Environmental Controls, Telecommunication equipment, and Fire suppression detection systems. (Chapter 3: Telecommunication Spaces) What Cross Connect is allowed in a T.E ? Only Horizontal Cross Connects H.C (Chapter 3: Telecommunication Spaces) T.R lighting requirements 538 Lux or 50 Foot Candles (Pg 3-12) (Chapter 3: Telecommunication Spaces) Sleeve rule for the Equipment Room ? A minimum of four trade size 4 sleeves. (Chapter 4: Backbone Distribution): Recommended B.T.P Sizes ? BICSI 24 through 22 wire gauge (Pg. 4-23) (Chapter 4: Backbone Distribution Systems) Size of trade size 3 conduit in millimeters ? 78 Millimeters or 75 vernacular or 3 inches (Pg. 4-26) (Chapter 4: Backbone Distribution Systems) Preferred method of mounting equipment ? 1st option is to rack mount equipment if rack mounting isn't available then wall mounting is permitted. (Pg. 4-38) (Chapter 4: Backbone Distribution Systems) What Happens with poor vertical wire management ? 1. Slippage between the cable core and the sheath. 2. Stretching of copper conductors. 3. Broken Cables. (Pg. 4-33)