10.10 SFC BENCH TEST DEVICE
SFC is a digital audio signal adaptor (S\PDIF) to place between two devices
with digital input/output. The main purpose of this adaptor is to solve issues
related to digital interfacing of the two devices such as:
1. Digital head unit with higher sampling frequency (96/192 kHz) while the
receiver can’t handle frequencies higher than 96 kHz.
2. The receiver/transmitter does not feature an optical or electric coaxial
input/output: the SFC can be used to recreate the missing connection.
3. Malfunctioning or anomalous noises when the head unit is set to “Pause”.
The issue is caused by the fact that while being paused some head units
strip away the digital signal carrier wave; SFC constantly provides the
carrier wave to the receiver.
4. When “Play” is selected on the head unit and the music program is starter
or during normal functioning intermittent noises can be heard even at
low volume. This phenomenon is due to poor quality or insufficient level of
the digital signal; SFC can recover the signal eliminating the issue.
Description
SFC is a sampling frequency converter; it converts the digital signal, inputting
an S/PDIF digital signal with from 32 kHz to 192 kHz sampling frequency and
outputting an S/PDIF digital signal with 48 kHz sampling frequency.
SFC does not alter the information travelling along the signal, it can not handle AC3
®
or Dolby
Surround
®
encoded signals but just stereo PCM ones and does not convert the digital signal into analog.
SFCfeaturestwoinputs:onecoaxialelectrical(75Ω)andanotheroptical(TOSLINK).Youhavetoselect
which input will be used through the INPUT MODE switch.
When the ERROR LED lights up, it indicates either that the input signal is not stereo PCM or that the signal is
instable; in that case, the SFC goes into “Mute” status not to damage the devices connected to its outputs.
SFCfeaturestwooutputs:onecoaxialelectrical(75Ω)andanotheroptical(TOSLINK).Boththeoutputsareactive.
10
To Next Page
Loading...
Need help?
General
