Garmin GDL 69/69A Installation Manual page 44

System Configuration/Checkout
4.2.2 Configuration Module Procedure for Installation with 400/500 Series
Perform the following steps to program the configuration module of the GDL 69/69A when using the
400/500 Series as the control and display unit:
1. Power up the 400/500 in Configuration Mode (refer to the 400/500 Install Manual for
instructions)
2. Go to GDL CONFIG Page (the last page)
3. Enter in the Attenuation value, which is computed as in the following formula:
Attenuation = ( 6 – GLcomp )*10
GLcomp = GDL 69/69A gain/loss component value from Table 2-7.
Example: If GLcomp from Table 2-7 is -1.39dB (calculated from example in Section 2.6.4.2)
than;
If Attenuation from the above calculation is < zero or > 100 then the gain/loss
compensation is outside the range required for proper operation. Review Section 2.6.4 for
appropriate corrective action.
4.2.3 Configuration Module Procedure for GDU 104x
1. Insert the correct Loader Card into the top slot of the PFD.
2. Start the G1000 system in Configuration mode.
3. On the PFD, go to the Configuration Upload page using the FMS knob:
4. Activate the cursor and use the small FMS knob to highlight the airframe type in the FILE field.
Ensure that the correct airframe type is selected before proceeding; otherwise, incorrect
configuration information will be loaded.
5. Press the ENT key to select the appropriate airframe type. Once an airframe type is selected the
configuration files in the SECTION field will be displayed.
6. Using the FMS knob, highlight 'GDL69' in the FILE LIST field.
7. Press the LOAD softkey.
8. Select YES and press the ENT key to acknowledge the following prompt:
9. Monitor the status of the upload. When the upload is finished, press the ENT key to acknowledge
the following confirmation:
Page 4-2
Revision E
Attenuation = (6 - (-1.39))*10
= (6+1.39)* 10
Attenuation = 7.39 * 10 = 73.9 rounded up 74 to enter in the 400/500 Series.
NOTE
NOTE
GDL 69/69A Installation Manual
190-00355-02