Garmin Software Version 0858.09 Bedienerhandbuch PDF herunterladen (Seite 48)

Page 4-6 G1000 System Maintenance Manual - Hawker Beechcraft G36

Rev. 5 190-01259-00

Pilot Compartment

• Top metal case of PFD: __________ milli-volts

• Top metal case of MFD: __________ milli-volts

• GTX 33 top: __________ milli-volts

• GIA 1 top: __________ milli-volts

• GIA 2 top: __________ milli-volts

• GMU metal base: __________ milli-volts

Ensure that at each PFD or MFD test point, no more than 20 milli-volts (20 mΩ) are present.

In this case, voltage is equivalent to resistance (Ω), given that precisely 1 amp reference

current is present. For all other LRUs see requirements below.

Cabin Compartment

• Metal case of GPA 65 LNA/PA: __________ milli-volts (part of GTS 820 option)

Empennage

• Metal case of GTS 820: __________ milli-volts (optional equipment)

Aircraft Exterior (Antennas)

• GA 58 Top traffic antenna mounting screw: __________ milli-volts (optional equipment)

• GA 58 Bottom traffic antenna mounting screw: __________ milli-volts (optional

equipment)

Ensure that at each test point, no more than 10 milli-volts (10 mΩ) are present. In this case,

voltage is equivalent to resistance (Ω), given that precisely 1 amp reference current is

present.

TIP: If 1 amp reference current cannot be maintained, note the difference between the

attainable current and 1 amp reference current. Calculate the percentage difference and

apply this to the voltage reading to obtain the equivalent resistance. Example: If the

measured current is 1.2 amps, (20% high from the target 1 amp current), then the allowable

voltage measurement would be 20% high, 2.5 milli-volts would now be 3.0 milli-volts.

If one or more bonding checks fails, i.e. the resistance is higher than those listed above,

then clean and rebond as necessary. Re-attach equipment racks/appliance/antenna and

complete electrical bonding test based on the original installation requirements. Refer to the

applicable installation drawing referenced in Table 1.1 for the bonding requirements.

After bonding checks are complete, ensure all electrical and coaxial cable connectors are

reconnected and all systems are working properly.

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Garmin Software Version 0858.09 Bedienerhandbuch Seite 48