Garmin CIRRUS PERSPECTIVE SR20 Line Maintenance Manual page 272

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V. Terrain‐Synthetic Vision (SVS) Unlock Option
Once an unlock SD card is utilized for a particular installation that card becomes locked with the
system ID for that aircraft. The unlock cards must be retained for that aircraft should there be a
need to unlock the feature again in the field. Perform this procedure only if the aircraft is to be
equipped with the Garmin Terrain‐SVS option.
1. Remove power from the PFD and MFD by opening the PFD and MFD circuit breakers.
2. A special Synthetic Vision unlock card is required to enable SVS. Refer to the appropriate
Cirrus drawing for the correct part number. Insert this card in the top slot of the PFD.
3. While holding the ENT key on the PFD and MFD, restore power to the displays.
4. When the words 'INITIALIZING SYSTEM' appear in the upper left corner of both displays,
release the ENT keys.
5. On the PFD, go to the System Upload page using the FMS knob.
6. Activate the cursor. Use the small FMS knob to select CONFIGURATION FILES in the
AIRFRAME field and press the ENT key.
7. Highlight the FILE field. Use the small FMS knob to select the 'Enable Synthetic Vision'
option and press the ENT key. Once the option is selected, the configuration files in the
PRODUCT field will be displayed. All files should be checked. If not, press the CHK ALL
softkey.
8. Press the LOAD softkey.
9. Monitor the status of the upload. When the upload is finished, press the ENT key to
acknowledge the upload complete confirmation.
10. View the SUMMARY field and ensure that the item is 'COMPLETE'.
11. De‐activate the cursor.
12. Power down the system and remove the Synthetic Vision Enable card from the PFD.
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Rev. E
Cirrus Perspective™ Line Maintenance Manual
190-00920-00