Tone Modulation Adjustments - SAC SS-800AVS Manual

5
High level voice without code
signal while voice signal
present. High level code only
while voice signal absent.
AM Recycle PWB switch Sl on
IDENT. Audio PWB installed.
Jumpers Ja and Jc installed
on AMRecycle PWB. No Jumper
Jb installed. Resistor RI9
removed from the AM Recycle
PWB.
5.6 Tone Modulation Adjustment
Tone modulation percentage is factory set using the procedure under
the "Frequency and Percent Modulation Adjustment" in section 6..
To ~check modulation or readjust after the system is tuned and
operating with the antenna, use an oscilloscope with the probe held
in the air to observe the radiated waveform and adjust modulation
with R3 on the oscillator PWB.
104 Southern Avionics
SS-800AVS
Company