![]() The following tables are intended to aid cable selection by showing applications and specifications of the cables in the catalogue.ĭr. What properties are required of a cable to make it suitable for both analogue and digital signals? These colour codes are offered as guidance in allocating circuits and investigating existing installations. How did we arrive at today's typical values for cable impedances and what values will be suitable going forward? Unless there were common earths with other equipment, any equipment wired to one convention would pick up the correct voltages, if available, at the correct polarity from a PSU wired to the other. This is essentially the same as the common convention, except that the grounded pin effectively ‘floats’. ![]() Thus a -50V supply would be on pin 1 and pin 4 would be ground (and pins 2 and 3 would not be used). This arrangement is to apply power before the bus, to allow for hot plugging.Ī BBC Radio Outside Broadcasts convention, now virtually obsolete, was to have pin 1 as 0V or negative, pin 2 as +12V relative to pin 1, pin 3 +24V relative to pin 1, and pin 4 +48V relative to pin 1. A further specialized use of the XLR 4-pin when DC power is carried is the DHD RM4200D CAN bus connector, which has pin 1 at +24V and pin 4 (connected to shell) at 0V. This arrangement is used on all relevant Canford manufactured products.Īnother well used convention can be found on many cameras, where pin 1 is 0V and pin 4 +12V, others not connected. Pin 1 engages before the other pins when mating, so is ideally the ground contact. ![]() ![]() There is no universal standard for this, however the most common convention for DC power on XLR 4-pin connectors is: Pin 1 XLR 4-Pin wiring for DC power connections Categories By brand New products Audio and data connectors Video and RF connectors Power connectors, distribution and batteries Connection panels and stageboxes Fibre optic cables, connectors and interfaces Cable assemblies, patchcords and leads Cables Cabling accessories and tools Bags and cases Racks and enclosures Rack accessories and hardware Lights, clocks, furniture, fittings and equipment supports Drives, memory, media, labelling and sound effects Microphones Radio Microphones Microphone supports, amplifiers, powering and accessories Headphones, headsets, earpieces, amplifiers and wireless systems Hearing protection and noise control Record, replay and radio receivers Audio interfacing Video interfacing, processing, monitoring and camera accessories Audio mixers and processing Amplification Loudspeakers and audio monitoring Test and measurement Communications, conferencing and datacoms Assistive Listening Index By brand Index New products Special offers Clearance list ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |