CXA1910 SONY [Sony Corporation], CXA1910 Datasheet - Page 14

• Manufacturer Part Number: CXA1910
• Description: Dolby B Type Noise Reduction System with Playback Equalizer
• Manufacturer: SONY [Sony Corporation]

(4) MS (internal detection between tracks) adjustment method
1) MS gain (FF/NOR mode gain) adjustment
2) MS low-band cut-off frequency adjustment
3) MS high-band cut-off frequency adjustment
MS gain is expressed by the following equations.
C2
The external resistors R1 and R2 and external capacitors C1 and C2 should be adjusted to adjust the low-
band cut-off frequency for the MS frequency response.
The external capacitor C3 should be adjusted to adjust the high-band cut-off frequency for the MS
frequency response. (In this case, G1 and G2 have the same cut-off frequency.)
G1 = 10 + 20log
TAPEIN
R1 + 100k
10dB
(in the case of built-in CR only)
R1
MSLPF
C3
25kHz LPF
[dB]
3
100k
G1
64pF
G2
2
2
2
G1
R1
C1
1
External resistors R1 and R2
External resistors R1 and R2 and external capacitors C1 and
External capacitor C3
G2 = 10 + 20log
—14—
3
Fig. 5
R2
C2
G2
100k
1
1
1
2
R2 + 100k
MSTC
R2
DET
[dB]
MSOUT
CXA1910Q