Rx Audio Subcarrier Demodulator (900172)
Modules
B-8
DAR Plus Operator’s Guide
400468-1
Rev. C
B.7
Rx Audio Subcarrier Demodulator (900172)
Table B-5
Rx Audio Subcarrier Demodulator (900172)
Figure B-7
Rx Audio Subcarrier Demodulator (900172)
Component
Description
C8
Discriminator Adjust for Distortion
L1
Peak for S.C. Level U1 Pin 13 @ 2.5V Vdc
R21
Notch Filter Q Factor Adjust
C19
Notch Filter Frequency Adjust
R24
Flatness Adjust at 15 kHz
C12
Fixed Capacitor for DE-EMPHASIS
R14
Fixed Resistor for DE-EMPHASIS
R24
C8
L1
C19
R21
NOTCH FILTER
FREQUENCY ADJUST
FLATNESS ADJUST
AT 15 KHz.
DISCRIMINATOR ADJUST
FOR DISTORTION
PEAK FOR S.C. LEVEL
AT U1 PIN 13 @ 2.5Vdc.
900172
NOTCH FILTER
Q FACTOR ADJUST