Autoshutdown Adjustment - Nonvoice System; Automatic Shutdown Test - SAC SS-800AVS Manual

Place the meter function switch in one of the RF watts
position and adjust the power output to the desired carrier
level.
ii.
Place the IDENT/CARRIER/CONT switch in the CONT (continuous
tone) position.
Apply the audio line input signal to the transmitter.
Measure the ACRM S voltage at TPI of the Audio PWB and
adjust R6 for an average of 1 VRM s or 3Vp_p.
Placethe meter function switch in the 25 DC volts position.
12. Rotate Code Tone Shutdown Level Control R22 on the Auto-
shutdown PWB CW until the voltage at TP2 of the Autoshutdown
PWB deflects upward and holds steady.
5.7.2 Autoshutdown Adjustment - Nonvoice System
Apply power to the transmitter.
Adjust RF power from the transmitter to the desired shutdown
level using RF Drive Control R39 on the AM oscillator PWB.
Place the transmitter meter function switch in the 25 DC
volts position and connect the test probe furnished with
the transmitter between the Probe Jack terminal next to
the meter and TP2 on the Autoshutdown PWB. See figure,
"Control and Testpoint Positions."
Rotate R6 and R22 located on the Autoshutdown PWB fully
CCW.
Rotate R6 CW until a downward deflection of the meter is
observed.
Place the meter function switch in one of the RF watts
position and adjust the power output to the desired carrier
level.
Place the IDENT/CARRIER/CONT switch in the IDENT position.
Place the meter function switch in the 25 DC volts position.
Adjust R22 CW until the meter deflects upward during ident.
5.7.3 Automatic Shutdown Test
To check the automatic shutdown feature for ident failure, place
Sl on the Recycle PWB in CONT. After a delay of 15 to 60 seconds,
the transmitter will shut down. Reset the system by switching the
ON/OFF switch to OFF and then back to ON. To check for the decrease
106 Southern Avionics
SS-800AVS
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