Garmin G5 Installation Manual page 150

11. Repeat steps 2 through 5 for all other installed COM transceivers (if applicable).
12. If an installed COM supports 8.33 MHz channel spacing, increase the transmit period
to 35 seconds and repeat steps 3 through 5 for the following frequencies:
•
121.185 MHz
•
121.190 MHz
•
130.285 MHz
•
131.290 MHz
13. Repeat step 7 for all other installed COM transceivers supporting 8.33 MHz channel
spacing (if applicable).
6.3.9 Electromagnetic Compatibility (EMC) Check
An EMC check must be conducted once the G5(s) and supporting equipment is installed and
all interfaces to external equipment are verified to be correctly working. The EMC check
makes sure the equipment is not producing unacceptable interference to the other avionics
systems, and other avionics systems are not producing unacceptable interference to the G5.
An example EMC Source/Victim matrix is shown in Figure 6-4.
1. Enter equipment installed in the aircraft into the Source row and Victim column of the
fillable form.
2. Apply power to all avionics systems except the equipment installed under this STC.
3. Make sure all existing avionics systems are properly functioning.
4. Apply power to the G5.
5. Remove power from all other avionics systems.
6. Apply power and/or operate the systems listed on the fillable form, one system at a
time. Make sure to pull/push circuit breakers or turn on/off large loads, e.g. heaters,
cycling flaps (if electrical) etc.
7. Make sure the G5 properly functions.
a. When the VHF COM is operating as a source, transmit on low/med/high
unused frequencies.
8. Make sure each radio properly functions.
a. For each VHF COM radio, monitor one local frequency, one remote (far field)
frequency, and one unused frequency.
b. Make sure there are no unintended squelch breaks or audio tones interfere with
communications.
c. For each VHF NAV radio, monitor one local frequency, one remote (far field)
frequency, and one unused frequency.
d. Make sure there are no guidance errors.
e. Make sure there are no audio tones that interfere with the station ID.
f. For each GPS Navigator, enter a simple flight plan and display as appropriate.
i.e. Navigator Display, G5, HSI, CDI etc., if installed.
g. Make sure there are no guidance errors.
9. Make sure all other avionics properly function.
Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual
Page 150
190-01112-10
Rev. 9