Length
Cable length is the physical length of the specified cable assembly.
Check whether the measurement covers the complete assembly, the flexible cable section or a stated relaxed or extended condition. Routing usually needs allowance for connections and bends.
Length — USB Cable
For a USB cable, length sets the physical span between source and receiving device. The supported USB mode can depend on the complete cable design and length.
Compare the stated operating capability at the selected length. A longer version should not automatically inherit every performance claim of a shorter cable, and power requirements can also matter.
Length — HDMI Cable
For an HDMI cable, length must cover the route from source to display or other component. Active designs can impose direction and power requirements.
Compare supported video and audio-return modes at the actual selected length. Allow room for connectors and bends; a length option alone does not establish equal capability across the range.
Length — BNC Cable
For a BNC cable, length covers the path between the intended coaxial connections. It is separate from connector type and characteristic impedance.
Compare total signal-loss or timing conditions at the required length. Keep per-metre electrical values distinct from whole-cable values, and leave sufficient space for the fitted connectors.
Length — S/PDIF Cable
For an S/PDIF cable, length describes the selected optical or electrical assembly. The medium and device interfaces determine the relevant operating limits.
Compare the claimed supported rate at that length and for the same medium. A coaxial cable’s electrical properties should not be applied to an optical cable merely because both carry S/PDIF.
Length — Speaker Cable
For a loudspeaker cable, length covers the route from amplifier to speaker. Longer runs increase total conductor resistance for the same material and cross-section.
Compare the required run with conductor size and the connected load. Keep a stereo set’s two cable lengths distinct from a single combined total, and allow suitable termination space.
Length — Phono Cable
For a phono cable, length affects both routing from the arm or turntable and the total cable capacitance. That loading can matter with the specified cartridge and phono stage.
Compare the actual installed length and capacitance basis. A per-metre rating is not the total seen by the cartridge, and any separate ground lead can have a different length.
Length — XLR Cable
For an XLR cable, length determines the routing space between the intended balanced audio or other specified interfaces. Total cable capacitance increases with length.
Compare the complete cable’s intended signal use and source compatibility. An XLR connector alone does not distinguish analogue audio from AES3, and cable length does not establish either use.
Length — Ethernet Cable
For an Ethernet cable, length determines the physical network run. The supported category and network mode have their own channel-length conditions.
Compare the selected length and complete installation, including connections where relevant. A patch-cable length is not automatically the whole network channel, and category alone does not remove length constraints.
Length — RCA Cable
For an RCA interconnect, length determines the route between components and contributes to total cable capacitance. The intended analogue or digital application also matters.
Compare the needed run with source and cable requirements. Keep per-length measurements distinct from whole-cable values, and allow for connector bodies and bend clearance behind equipment.
Length — Headphone
For headphones, cable length determines the distance available between the listener and the connected source. Detachable cable options can have different lengths.
Compare the supplied configuration and any extension separately. A coiled cable can have relaxed and extended lengths; retain the stated condition rather than treating them as the same usable span.
Length — SFP USB Cable
For an optical USB assembly, length describes the physical link between its ends. Supported distance depends on the active construction and any power arrangement.
Compare the selected length with the supported USB mode and required connections. An optical section does not remove connector clearance or bend-radius requirements, and auxiliary leads can have separate lengths.
Length — Optical Cable
For an optical audio cable, length describes the fibre route between compatible ports. Supported operation also depends on the transmitter, receiver and cable loss.
Compare the required length with the stated signal support. Allow gradual bends and suitable connector clearance. A longer cable does not automatically retain the same operating margin as a shorter version.
Length — SFP Ethernet Cable
For an optical Ethernet cable, length describes the fibre run rather than the transceiver’s maximum reach. The cable must be suitable for the installed optical modules.
Compare actual length, fibre type and the complete link conditions. A module’s kilometre reach rating does not identify the length of the supplied patch lead.
Length — Power Cable
For a power cable, length determines the route between the supply socket and the component. The assembly’s electrical rating applies to its specified construction.
Compare the required route with the rated cable and fitted connectors. Extra length does not increase current capacity, and the connector bodies may need additional clearance beyond the cable run.