RX-V3900/DSP-AX3900
U2. USB CHECK
VNP2 TEST 1k
1kHz test tone is output.
VNP2 TEST 20Hz
20Hz test tone is output.
VNP2 TEST 20k
20kHz test tone is output.
VNP2 TEST2
1kHz test tone is output.
Signal path of test tone output /
24.576MMz
54
VNP2 (IC105 D-VIDEO P.C.B.)
The tone generator
USB
TEST 20Hz,1kHz,20kHz
XL101
NPGA (IC114 D-VIDEO P.C.B.)
DSP
Test tone /
1/2
XL103
45.1584MMz