An undesirable feedback condition caused by two or more circuits sharing a common electrical line, usually a grounded conductor. [to top
Circulating current between two or more connections to electrical ground. This signal can be detected and displayed by electronic instruments. These signals are generally not associated with the variable to be measured and represent noise in the measuring system.
An AC current that can be produced in a cable. This is usually caused by parts of the system being fed from different electrical sources resulting in different earth potentials at each end. The result is interference on the signal.
Undesirable voltages caused by ground currents of several circuits flowing in a common ground circuit or ground plane.
This type of picture interference is caused when the ends of a video cable have differing ground potential, causing an AC current. This is either a black shadow bar onscreen or a tearing in the top corner of the picture results. The use of ground loop insulators prevents this problem.
An alternating current (AC) that can be produced in a cable. This is usually caused by parts of the system being fed from different electrical sources resulting in different earth potentials at each end of the signal path. This results in interference of the video pictures in the form of a black shadow bar across the screen or as a tearing effect in the top comer of a picture.
An unintentionally induced feedback loop caused by two or more circuits sharing a common electrical ground.
A potential system grounding problem that may produce symptoms that appear as sync noise and cause a horizontal bar (hum bar) to roll vertically on the video image. A ground loop occurs when some devices in a system are not connected to the same electrical ground as the other devices. This can create a voltage potential difference between ground on the pieces of equipment.
A double grounding of a line or electronic device at two different "ground" points with different voltages.
An alternative path in which voltage can travel. Ground loops can produce measurement errors. Refer to the sensor's manual for tips on avoiding ground loops.
A condition where the local grounds at each end of a length of cable are at a different AC potential. This sometimes causes hum and noise problems and may require the use of corrective measures such as a ground lift switch on the equipment.
An unwanted feedback condition caused by two or more circuits sharing a common electrical ground.
a an annoying thing which can cause humming noise headaches for audio system installer
a condition where an unintended connection to ground is made through an interfering electrical conductor
an uncommon electrical condition that can affect stations connected directly to a PC and that can cause aberrant readings, especially of wind speed and direction, on the console
a potentially dangerous loop formed when two or more points in an electrical system are grounded to different potentials
a voltage potential difference between components usually caused by running equipment off several different outlets
An alternate feedback path, usually unintentional, between devices sharing a common ground.
A term given when two or more devices have grounds that are not exactly at the same electrical potential. When this happens there will be current that flows between the ground points due to this difference. This current appears as signal on the audio cables which can be amplified by the system, sometimes causing audible whine.
Some power supplies have difficulties with feedback, usually as a result of two or more circuits on a common electrical line, which is also a common ground line. In order to rectify this situation, single-point grounding is recommended.
A loop formed when two or more points in an audio system that are nominally at ground potential are connected by a conducting path, sometimes resulting in audible hum or noise.
An undesired potential EMI condition formed when two or more pieces of equipment are interconnected and earthed for shock safety hazard prevention purposes.
The term given to the condition that occurs when a voltage potential exists between two separate ground points.
A feedback problem caused by two or more circuits sharing a common electrical line, usually a common ground line. Voltage gradients in this line caused by one circuit may be capacitively, inductively, or resistively coupled into the other circuits via the common line.
An unwanted interference in the copper electrical signal transmissions with shielded cable, which is a result of ground currents when the system has more than one ground. For example, in CCTV, when we have a different earthing resistance at the camera, and the switcher or monitor end. The induced electrical noise generated by the surrounding electrical equipment (including mains) does not discharge equally through the two earthings (since they are different) and the induced noise shows up on the monitors as interference.
A double grounding of a line or electronic device at two different "ground" points of differing voltage.
Condition caused when two or more system components share a common electrical ground line. A feedback loop is unintentionally induced, causing unwanted voltage levels.
Effects video pictures in the form of a black shadow bar across the screen or as tearing in the top corner of a picture. Caused by different earth potentials in a system.
A condition that causes undesirable voltage levels and current flow when two or more circuits share a common electrical return or ground line
The condition of having two or more ground references in a common system. When two or more grounds have a potential difference between them, current can flow. This flow of current is a new circuit or loop which can interfere with the normal operation of the system.
a condition that occurs when several ground pathways exist between two devices, resulting in hum and increased noise.
The generation of undesirable current flow within a ground conductor, owing to the circulation currents which originate from a second source of voltage.
Caused by different earth potentials in a system. Effects video pictures in the form of a black shadow bar across the screen or as a tearing in the top corner of a picture.
Caused by different earth potentials clearly seen as interference or humbars on a video signal.
A difference in potential (voltage) between (2) signal grounds.
Caused by different earth potentials in a system. Seen on a video transmission as a black shadow bar across the screen or as tearing in the top corner of a picture.
These humbars are created when there is a substantial difference in the grounding resistance at two different points of a system. Headend : The electronic reception and distribution equipment located at the start of a cable system. The portion of a TV system where all desired signals are received and processed for subsequent distribution.
A connection between two earth/ground points at differing potentials thus causing a current flow. The magnitude of this current may cause errors or, exceptionally, damage to the equipment.
This occurs when a component has two grounding points, and the voltage is different at both points. Many time this will happen when an amp is not grounded well, and the amp tries to use the outside shield of the RCA cable as its ground. The radio will also have two grounds, one that is actually in the wire harness, and the outer shield of the antenna lead. These are possible causes of system noise.
A completed circuit between shielded pairs of a multiple pair cable created by random contact between the shields. An undesirable circuit condition in which interference is created by ground currents when grounds are connected at more than one point.
A condition created when two or more paths for electricity are created in a ground line, or when one or more paths are created in a shield. Ground loops can create undesirable noise.
A term commonly used to indicate a connection of two points sharing a common electrical ground and being connected to the ground at two or more points allowing current to flow in an undesired path.
In an electrical system, ground loop refers to a current, generally unwanted, in a conductor connecting two points that are supposed to be at the same potential, that is, ground, but are actually at different potentials. Ground loops can be detrimental to the intended operation of the electrical system.