Garmin GTR 225 User Manual

190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. F Page 6-14
Table 6-14 COM Sidetone Pilot Control
(Software Version 2.10 or Later)
NOTE
The COM sidetone volume set in configuration mode is the value used when the FIXED
COM sidetone mode is selected in normal mode.
6.4.4.2 Mix NAV Audio Page
The MIX NAV AUDIO page configures whether NAV audio is mixed with the COM headphones. With
this option set to ON, the NAV audio will be sent along with COM audio to the pilot’s headphones and the
audio will be combined. With this option set to OFF, the NAV audio will not be heard in the pilot’s
headphones. The NAV audio will still be sent over the analog audio lines on P2002-16 and 17. In
installations with an audio panel, this should be set to OFF. Turn the inner knob to ON or OFF. Press ENT
when the selection is displayed.
Figure 6-20 Mix NAV Audio Page
6.4.4.3 Hi-Fidelity Audio Page
The HI-FIDELITY AUDIO page enables or disables the hi-fidelity AUX audio input on the GTR/GNC. If
a music audio source is connected to P2001-3 and 19, it may be desirable to enable the hi-fidelity audio.
Turn the inner knob to ON or OFF. Press ENT when the appropriate selection is displayed.
Figure 6-21 Hi-Fidelity Audio Page
Selection Description
DISABLE The COM sidetone volume is set in configuration mode.
ENABLE
Allows the pilot to select the COM sidetone volume to change with
adjustments of the COM RX volume.

Garmin GTR 225 Specifications

General

Input Voltage	11-33 VDC
Operating Voltage	11-33 VDC
Operating Temperature	-20°C to +55°C
Frequency Range	118.000 MHz to 136.975 MHz
Channel Spacing	25 kHz
Transmit Power	10 W
Current Consumption	1.5 A (max transmit)