Range Buttons; Pwr Button - Aspen Avionics Evolution Backup Display EFD1000 Pilot's Manual

2.2.5. Range Buttons

When the MAP is enabled, the RNG (Range) Button is used to zoom the map in or out.
Press the RNG (+) Button to increase map range. Press the RNG (-) Button to decrease
map range. Additionally, an Auto Range control feature is available.
Pressing and holding either the RNG (+) or (-) Button will cause the map range to scale
continuously to its maximum or minimum range, respectively. When the map range is
at its maximum or minimum setting, release and then press and hold the RNG Button
again to activate the Auto Range control mode (see Section 4.4.12.1. for more details).
2.2.6. REV / PWR Button
The red REV / PWR Button on the EBD can be used to override automatic power control
in abnormal or emergency situations (see Chapter 6 for more details).
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