Will any BNC cable work for word clock?
A BNC cable is normally used for word clock or digital signals in the recording studio. These cables work at 75 Ω and it is important to choose quality cables to avoid jitter and signal degradation, especially when used with AD or DA converters. They are perfectly suitable in Hi-Fi equipment.
What is the standard impedance rating for a word clock connection?
Word clock lines should have a 75 ohm source impedance and a 75 ohm load termination at the farthest end of the line. Without these line terminations, the quality of the word clock degrades significantly over long distance (hundreds of feet) and may cause a loss of PLL lock in the receiving equipment.
How long can word clock cable be?
AES limit is 100 meters or 328 feet. S/PDIF limit is 10 meters. Info from “Modern Recording Techniques,” 4th ed.
What is a word clock cable?
In digital audio electronics, a word clock or wordclock (sometimes sample clock, which can have a broader meaning) is a clock signal used to synchronise other devices, such as digital audio tape machines and compact disc players, which interconnect via digital audio signals.
Does BNC cable Quality Matter?
75 Ohm BNC cables/connectors are used when Low Loss of Signal is Especially Important. 50-ohm cables/connectors work well with old analog video formats. If you are looking for a high quality video output, 50 Ohm will not give you a high quality level.
Can Adat carry word clock?
You just set the your ADAT expansion box/mixer/whatever to take timing from the ADAT interface. leave your main interface as master. Should be fine. Word clock is generally only needed for very large facilities where not everything is connected directly.
What is word clock jitter?
What is jitter? It’s the undesired deviation of a periodic signal from the ideal timing… A word clock signal acts like a conductor, providing a timing signal to all the parts of a digital audio system so that each process may be triggered at a precise moment.
What frequency is word clock?
Word clock is a set of timed pulses used to synchronize signals at the clock rate, which is called the sampling frequency or sample rate (at a value typically in the kilohertz range; e.g., 44.1kHz, 48kHz, 88.2kHz, 96kHz, etc.). Word clock is used by the receiving digital device to lock to the incoming digital signal.
Which purpose BNC connector with 75 ohms is used?
Video (particularly HD video signals) and DS3 Telco central office applications primarily use 75 ohm BNC connectors, whereas 50 ohm connectors are used for data and RF. Many VHF receivers used 75 ohm antenna inputs, so they often used 75 ohm BNC connectors.
What is impedance matching?
This is called impedance matching. No matter what kind of wave we are talking about — electromagnetic (EM), acoustic, or ripples on a rope — whenever the wave encounters a change or discontinuity in the impedance of whatever medium it’s flowing in or on, the wave’s components have to change as well.
Why is it important to match the impedance of telephone cables?
Since cable lengths between towns were comparable to the wavelength of the audio signals carried, it was important that the impedances of the sending and receiving telephone exchange equipment, along with the characteristic impedance of the cables (see ‘Characteristic Impedance’ box), were properly matched.
What is 75 ohm wave impedance matching?
The exact 75 Ohm wave impedance matching and the enhanced 2-layer shield for superior EMI suppression eliminate the roots of noise-correlated jitter and contribute to accurate transmission of clock pulse’s time scale and shape.
Is it possible to Daisy-Chain a digital word clock output?
Although digital word clock inputs and outputs are meant to be impedance matched, it is possible to daisy-chain a number of inputs from a single output if you make sure only to have the 75 Ohms termination impedance at the end of the chain.