User's Manual

48
CALIBRATION PROCEDURE
- Instrument list
Description of the adjustment points
MEASURE INSTRUMENT
RF Signal level
- Spectrum Analyser
Frequency
- Spectrum Analyser
Audio
- Audio Generator
Modulation
- FM/AM Modulation Analyser
Limiter intervention
- Oscilloscope
COMPONENT DESCRIPTION
R1
LEFT Audio Input level
R25
Adjusts Left on Right signal crosstalk
R26
Adjusts Right on Left signal crosstalk
R27
Indication of the LEFT signal deviation on the display
C28
Adjusts the 19kHz pilot tone frequency
C36
Adjusts the pilot tone phase
LP1, LP2
Notch and Low-pass Filter at 19 and 38kHz
JP3
If inserted, sets the LEFT Input impedance to 600Ω
JP2
If inserted, enables the 25µs pre-emphasis
JP1
If inserted, enables the 50µs pre-emphasis