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A cable in this usage cable is a thick rope or by transference a chain cable. [1] The OED gives quotations from c. 1400 onwards. A cable's length (often "cable length" or just "cable") is simply the standard length in which cables came, which by 1555 had settled to around 100 fathoms (600 ft; 180 m) or 1 ⁄ 10 nautical mile (0.19 km; 0.12 mi). [1]
Figure A.1 shows a maximum length of 1,200 meters (3,900 ft), but this is with a termination, and the annex discusses the fact that many applications can tolerate greater timing and amplitude distortion, and that experience has shown that the cable length may be extended to several kilometers.
The length of a sinusoidal wave is commonly expressed as an angle, in units of degrees (with 360° in a wavelength) or radians (with 2π radians in a wavelength). So alternately the electrical length can be expressed as an angle which is the phase shift of the wave between the ends of the conductor [1] [3] [5]
MIL-STD-1553B does not specify the length of the cable. However, the maximum length of cable is directly related to the gauge of the cable conductor and time delay of the transmitted signal. A smaller conductor attenuates the signal more than a larger conductor. Typical propagation delay for a 1553B cable is 1.6 nanoseconds per foot.
Cable length: Length: Fathom: Length: Knot: Speed: League: Length: Nautical mile: Length: Rhumb: Angle: The angle between two successive points of the thirty-two point compass (11 degrees 15 minutes) (rare) [1] Shackle: Length: Before 1949, 12.5 fathoms; later 15 fathoms. [2] Toise: Length: Toise was also used for measures of area and volume ...
As a rule of thumb, the speed in bit/s multiplied by the length in meters should not exceed 10 8. Thus a 50-meter cable should not signal faster than 2 Mbit/s. [3] In contrast to RS-422, which has a driver circuit which cannot be switched off, RS-485 drivers use three-state logic allowing individual transmitters to be deactivated.
Speed (Mbit/s) Pairs required Lanes per direction Bits per hertz Line code Symbol rate per lane (MBd) Bandwidth Max distance (m) Cable Cable rating (MHz) Usage 25GBASE-T: 802.3bq-2016 (CL113) current 25000 4 4 6.25 PAM-16 RS-FEC (192, 186) LDPC 2000 1000 30 Cat 8: 2000 LAN, Data centres
(The resistors are in parallel, so a properly terminated bus should have a total resistance of 60Ω). The maximum distance for any device from the bus is six metres. The maximum backbone cable length is 250 meters (820 feet) with Mini cable backbone or 100 meters (328 feet) with Micro cable backbone [3] Typical NMEA 2000 Network Installation