Garmin GNS 530W Installation Manual page 110

5.5.7 Interface Checkout
This section describes checks that must be carried out to verify that systems interfacing to the GNS
500W Series unit are communicating properly. Only those interfaces that are connected to the GNS
500W Series unit must be verified.
5.5.7.1 Honeywell (Bendix/King) EFS40/50 Interface Check
If a Honeywell EFS40/50 has been connected to GNS 500W Series unit the interface should be verified
as described in this section.
1. Cycle power to the first GNS 500W Series unit and acknowledge the prompts until it gets to the
self test page (see Section 5.5.1).
2. Ensure that GPS1 data is displayed by pressing the "1-2" key on the EFS40/50 control panel.
3. While the GNS 500W Series unit is displaying the self test page, verify that the EFS40/50 is
displaying data from the GPS source. Note that vertical deviation will not be displayed.
•
Course Deviation: Half-scale left deviation, TO indication, flag pulled
•
Active Waypoint: GARMN
•
Vertical Deviation: Half-scale up deviation (only if installation is setup to display GPS
vertical deviation)
4. On the GNS 500W Series unit verify that an OBS value is displayed (and not dashed out).
5. Using a VOR test set verify that the CDI deviation on the EFS40/50 is displayed correctly.
6. Cycle power to the second GNS 500W Series unit and acknowledge the prompts until it gets to
the self test page (see Section 5.5.1).
7. Switch to GPS2 data by pressing the "1-2" key on the EFS40/50 control panel and repeat steps 3
through 5 with the second GNS 500W Series unit.
5.5.7.2 Sandel SN3308 Interface Check
If a Sandel SN3308 EHSI has been connected to the GNS 500W Series unit, the interface should be
verified as described in one of the following sections, as appropriate for the installation.
5.5.7.2.1 One 500W Series Unit / One SN3308
1. Cycle power to the GNS 500W Series unit and acknowledge the prompts until it gets to the self
test page (see Section 5.5.1).
2. Ensure that the SN3308 is receiving valid heading.
The Vertical Deviation Indication will not be displayed unless the SN3308 is receiving valid
heading.
3. While the GNS 500W Series unit is displaying the self test page, verify that the SN3308 is
displaying the following data from the GPS source.
•
Course Deviation: Half-scale left deviation, TO indication, flag pulled
•
Vertical Deviation: Half-scale up deviation, flag pulled
•
Active Waypoint: GARMN
4. On the GNS 500W Series unit verify that an OBS value is displayed (and not dashed out).
5. Acknowledge the self test on the GNS 500W Series unit by pressing the ENT key.
6. Select VLOC on the GNS 500W Series unit and verify that the SN3308 displays NAV 1 or NAV
2 (depending on what navigation source the GNS 500W is).
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Rev. D
NOTE
500W Series Installation Manual
190-00357-02