Garmin GTR 225 User Manual

190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. F Page 6-24
6.8.3 Loading Software to the GTR/GNC
To load software to the GTR/GNC, ensure that the unit is powered on in configuration mode.
1. Insert the supplied USB cable into the USB port of the GTR/GNC.
2. Insert the flash drive containing the software update into the other end of the cable.
See figure 6-27.
Figure 6-27 USB Update Progress
3. From the CONFIG MODE page, select the software to be updated (System Display, COM, or
NAV). Each software item must be separately updated. After update, verify the software updates
loaded successfully.
System Display Software Update
1. Turn the outer knob to SYS CONFIGURATION.
2. Turn the inner knob to DISPLAY UPDATE.
3. Press ENT.
4. Press ENT again.
5. Verify the available display software update is displayed.
6. Press ENT again to begin the software update process.
NAV Software Update
1. Turn the outer knob to NAV CONFIGURATION.
2. Turn the inner knob to NAV UPDATE.
3. Press ENT.
4. Press ENT again.
5. Verify the available NAV software update is displayed.
6. Press ENT again to begin the software update process.
USB Port
USB Cable
USB Flash Drive

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)