G1000/GFC 700 Post Installation Checkout Procedure – Hawker / Beechcraft King Air C90
Page 4-1
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Revision 5
4 INTERFACE
TESTING
This section describes the checks that must be completed in order to verify the system interface to the
G1000. The checks must be completed only for those systems that are installed. Following the interface
verification with the G1000, additional system checks may be required – refer to the appropriate system
installation manual for additional details.
4.1
GWX 68 Weather Radar Check
Caution
: Before energizing the equipment, be sure microwave radiation safety precautions
including both fuel and personnel safety considerations have been observed. These include
clearing all personnel to an area beyond the maximum permissible exposure level (MPEL)
boundary. The MPEL for the GWX 68 is 11 feet.
1. On the GCU, turn the large FMS knob to select the Map Page Group then turn the small FMS
knob to select the Weather Radar page.
2. Select
the
MODE
Softkey.
3. Select
the
STANDBY
softkey to initiate the one minute warm-up period. Verify, the radar enters
the standby mode after the warm-up is complete.
4. Press the GCU FMS knob to activate the cursor in the
TILT
field then turn the small FMS knob to
select the desired antenna tilt angle. Press the GCU
ENT
key. Press the GCU FMS knob to
remove the cursor.
5. Select
the
WEATHER
softkey. After reading the CAUTION, press YES to continue. Select vertical
profile mode.
6. Select
the
TILT
softkey to activate the cursor in the TILT field and display the Tilt Line. (If the Tilt
Line is not displayed, press the GCU MENU key and turn the large FMS knob to select ‘Show Tilt
Line’). Press the
ENT
key.
7. On the GCU, turn the small FMS Knob to adjust the antenna tilt angle then select the
GAIN
Softkey to activate the cursor in the ‘GAIN’ field.
8. On the GCU, turn the small FMS Knob to adjust the gain for the desirable level. Verify the gain
setting is visible in the gain field as a movable horizontal bar in a flashing box and the line pointer
is a reference depicting the calibrated position. Press the FMS Knob to remove the cursor.
9. On the GCU, select the GAIN Softkey again to recalibrate the gain. Verify ‘
CALIBRATED’
is
displayed in the ‘GAIN’ field.
10. Select the
STAB ON
Softkey to activate antenna stabilization or select the
STAB OFF
softkey to
deactivate. Verify the current stabilization condition is shown in the upper right of the weather
radar display.
