Total Audio Control COMPRESSOR ONE 500 Series, Инструкция по сборке и эксплуатации

Страница: 52 / 68

52
9) CROSSTALK ONTO & BETWEEN CONTROL BUSSES
When a LINK switch is pressed, there is always a signal on the LINK-RMS bus and when in MASTER or SLAVE mode there
will be a signal on the LINK_MASTER bus.
When no LINK switch is pressed theses busses are floating.
There is therefore the potential for crosstalk onto these busses from the modules, or between the busses. This may be
control signals or audio signals.
Since the LINK_RMS bus is sourced from the THAT4301 timing capacitor (0.22uF) this puts a low impedance on the bus
and crosstalk onto it is not going to have adverse effects.
Similarly, when the LINK_MASTER bus is in use it will always be sourced from a low impedance.
When neither bus is in use any crosstalk onto them is immaterial.
Measured crosstalk levels were better than -40dBu under sine and pulsed input signals from 20Hz to 20kHz.
It is advisable to keep bus connection length between to a minimal length.
In the case of a multichannel compressor it is advisable to make use of the dedicated busses on the TAC rack rather than
wire link connections.
In other racks it is possible to utilise PIN 6 for the LINK _RMS and have a wire link for LINK_MASTER