Garmin AT
Rev --
© 2004 Garmin AT
GX Service Manual
7-23
Note:
The RF signal strength is an 8-bit value with a range of 0 to 255 from the IF/RF AGC
voltage as read into the µcontroller through an A/D input.
Audio Noise Level Display
This function is used to display the noise level of the received audio.
NOISE 005
Note:
The noise level is an 8-bit value with a range of 0 to 255 from the noise level detector as
read into the µcontroller through an A/D input.
Headphone Level Display and Adjustment
This function is used to display and adjust the headphone audio level. Turning the small knob
changes the value. Setting the value to 0 slaves the headphone audio level to the volume control
knob. Setting to a non-zero value gives a fixed headphone audio level.
HphLv 015
Full transceiver functions are operational during this function, including transmit.
Note:
The headphone level is an 8-bit value with a range of 0 to 255.
Microphone 1 Squelch (VOX)
This function is used to display the input level required to break squelch by microphone1.
Mic1 Sqlch 005
Note:
The VOX level is an 8-bit value with a range of 0 to 127 from the noise level detector as
read into the µcontroller through an A/D input.
Microphone 2 Squelch (VOX)
This function is used to display the input level required to break squelch by microphone2.
Mic2 Sqlch 005
Note:
The VOX level is an 8-bit value with a range of 0 to 127 from the noise level detector as
read into the µcontroller through an A/D input.
Transmit Mic
This function allows you to control which microphone is permitted to transmit. You may choose
Mic1, Mic2, or both.
MIC1+MIC2
Note:
The Transmit Mic will display MIC1, MIC2, or MIC1+MIC2.
Intercom Audio Level Display and Adjustment
This function is used to display and adjust the intercom audio level. Turning the small knob
changes the value. Setting the value to 0 slaves the intercom level to the volume control knob.
Setting to a non-zero value gives a fixed intercom audio level.
IcmLv 000
Full transceiver functions are operational during this function, including transmit.
Note:
The intercom level is an 8-bit value with a range of 0 to 255.
Summary of Contents for APOLLO GX SERIES
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