Garmin apollo sl30 nav Manuale Utente

This function determines whether the weather frequencies in common use in North America 
are displayed, or not.  

1.  In the Setup Mode, rotate the large knob to select E

NABLE 

W

EATHER 

F

REQUENCIES

.  

2.  Press SEL to activate selection. The Yes or No value will flash.  
3.  Turn the small knob to change the value.  
4.  Press ENT to accept and save the settings.  

 

 

Tune the unit to a local frequency and verify the receiver output produces a clear and 
understandable audio output. Verify the transmitter functions properly by contacting another 
station and getting a report of reliable communications. Check the remote flip/flop. 

 

The antenna V

swr

 can be checked using an inline wattmeter in the antenna coax using 

frequencies near both ends of the band. The V

swr

 should be < 2:1, and is not to exceed 3:1. A 

V

swr

 of 2:1 will cause a drop in output power of approximately 12%, and 3:1 causes 

approximately a 26% drop. 

 

The sidetone volume was preset at the factory to a typical audio level. The level can be 
adjusted using one of the built-in system functions. To adjust the sidetone level: 

1.  Press SYS, rotate the large knob to the COM

 

R

ADIO 

I

NFO

: page, and press ENT. 

2.  Rotate the large knob to the S

IDETONE 

L

EVEL

: page. 

3.  Rotate the small knob to adjust the sidetone level. The sidetone level is displayed in a 

range of 1 to 100, and variable. The sidetone level can be adjusted during transmit. 

 

Transmit Mic Selection 
The Transmit Microphone page controls which microphone is permitted to transmit. Choose 
Mic 1, 2, or both. To select the Transmit Mic control: 

1.  Press the SYS button and rotate the large knob to T

RANSMIT 

M

IC

 page. 

2.  Rotate the small knob to select MIC1, MIC2, or MIC1+MIC2. 
3.  Select an appropriate frequency, key the transmitter, and talk into the microphones to 

check for the intended operation. 

The SL30 functions should be complete at this time. The final check includes verifying VOR 
and ILS operation. Start with the unit turned on and operating in the normal mode. Refer to 
the user’s manual for operating instructions. 

RS-232 Serial Interface Checks 
The interfaces to other equipment, such as the GX series GPS, should be checked as follows:  

1.  Operate the SL30 and GX unit in normal mode.  
2.  Press the Direct To button on the GPS unit and select an airport. Press ENT. 
3.  Operate the SL30 in Comm mode. Press SEL.