Garmin Apollo GX50 GPS Installation Manual page 34

Installation
Serial Interface Configuration
The GX50/60/65 RS-232 serial ports can be configured for several input and output formats.
To select the serial port configurations:
1. In test mode, rotate the
SEL
2. Press (the selection fields will start flashing), rotate the
SMALL
rotate the
The available serial port configurations are included in Appendix E. Serial output connections
should be limited to no more than three external units. An example of the typical settings for
the RS-232 selections for most installations would be:
CH
1:
2:
Comm Radio Setup
The Test Mode settings may also be used to preset the Microphone (Mic) Gain and the
Receiver Squelch levels.
Mic Gain
Set the microphone gain for microphones 1 and 2 for values from 0 to 255.
1. In the Test Mode, rotate the
SEL
2. Press to activate selection. The Mic 1 value will flash.
SMALL
3. Turn the
LARGE
4. Turn the
ENTER
5. Press to accept and save the settings.
Receiver Squelch
Preset the receiver squelch level for values from 25-100.
1. In the Test Mode, rotate the
SEL
2. Press to activate selection. The value will flash.
SMALL
3. Turn the
ENTER
4. Press to accept and save the settings.
Other Test Mode Pages
The GX50/60/65 test mode includes several other pages that are not necessary for the
checkout. They are as follows:
O EST ISPLAY
"T T D
EST ONTROLS
"T C
PERATION TATUS
"O S
26
LARGE
knob to the serial port configuration "CH RX TX" page.
knob to select the desired configurations, then press
Rx Tx
NAV MapCom
AltEnc GPSS
LARGE
knob to select "Mic Gain."
knob to change the value.
knob to the Mic 2 value. Turn the
LARGE
knob to select "Receiver Squelch."
knob to select a value.
" ...................... Can be used to check the GX50/60/65 front panel displays
by pressing
"......................... Can be used to check the GX50/60/65 front panel
controls. Press each button and rotate the
check the controls.
:" ................. Factory use only. Should be set to "S
LARGE
knob to select the port,
SMALL
knob to change the value.
ER
ENT
.
Apollo GX50/60/65 Installation Manual
ENT
when complete.
SMALL
knob to
TANDARD
."