Internal Signal Flow - Sony SRP-L300 Operating Instructions Manual

5. INTERNAL SIGNAL FLOW

5-1. Block Diagram (Including the A/D, D/A, and DIO Blocks)
The signal flow in the SRP-L300 is shown in the figure below.
CH-1
STACKING
CH-2
CH-1
ANALOG INPUT
CH-2
INPUT LEVEL
THRU
DIGITAL I/O
IN
• For the digital signal processing block marked with "*", refer to the "Digital Signal Processing Block" in Section 6.
• For the fetch position of each level meter, refer to the block diagrams in "Digital Signal Processing Block" in Section 6.
• A digital output signal is always the same as the output signal of a D/A converter.
5-2. Level Diagram
In the digital area, "dBFS" (dB value with the full scale as standard) is used as the absolute
value unit of a level. The level relation between analog and digital signals is shown in the
figure below.
INPUT
+24dBu
+4dBu
An analog input signal of +4 dBu is converted into a digital signal of –20 dBFS when the
INPUT LEVEL knobs are set to 0 dB. A digital output signal of –20 dBFS is converted into
an analog input signal of +4 dBu when the OUTPUT LEVEL knobs are set to 0 dB.
OVER
A/D
Sampling
Decoder
Rate
Converter
Memory
LCD
Display
(Level meter)
INPUT
INPUT LEVEL
LEVEL
A/D Digital signal precessing
Analog area Digital area
0dBFS
8dB
+12dB
-8dBFS
20dB
0dB
-20dBFS
-12dB -32dBFS
D/A
Digital
*
Filter
Digital
Signal
D/A
Processing
Block
CPU
SW
Rotary Encoder
OUTPUT
OUTPUT LEVEL OUTPUT
LEVEL
D/A
Analog area
0dBFS +24dBu
+12dB
+16dBu
0dB
-20dBFS +4dBu
-12dB -8dBu
OUTPUT LEVEL
ANALOG OUTPUT
CH-1
CH-2
DIGITAL OUTPUT
Encoder
REMOTE
(RS-232C)
11