Optical Digital I/O - Kenwood TS-990S In-Depth Manual

Optical Digital I/O

The DSP in the TS‑990S has an internal optical digital signal encoder and decoder. A device that supports optical
digital signals and is connected to the optical digital I/O terminals can directly send/receive signals to/from the TS‑990S
internal DSP without going through an analog circuit.
TS-990S
DSP
A high‑precision sampling rate converter runs inside the DSP. The optical digital signals entered to the TS‑990S conform
to the 48 kHz and 44.1 kHz sampling frequencies.
DAC
ADC
Fig. 86 Difference of the Paths to the Optical Digital I/O terminals
and the Paths to the Microphone Input and Speaker Output
Internal, External Speaker, etc.
Analog Circuit
(Amp., etc.)
OPTICAL
OUT
OPTICAL IN
Analog Circuit
(Amp., etc.)
Microphone,
ACC Input, etc.
DSP 06
Equipment that
accepts optical
digital signals
55