Page 15-24
G900X/G950 Installation and Maintenance Manual – Software, Configuration, and Calibration
Revision D
190-00719-00
15.3 Additional
Configuration
15.3.1 GDL 69(A) Configuration
1.
Measure the length of RG-400 coaxial cable from the GDL to the antenna.
2.
Use the following formula to determine cable loss:
NOTE
RG-400 coaxial cable loss is 0.261 db/feet.
Loss in dB = (Length x Loss) + (0.5 x # of connectors)
Length = cable length in feet
Loss = specified cable loss per foot at 2332-2345 MHz
Connectors = number of connectors on cable
Example, an RG-400 coaxial cable is 10 feet long with 2 TNC connectors, the cable would be figured
as:
(10 x 0.261) + (0.5 x 2) = 3.61 dB
3.
Pull the MFD and PFD(s) circuit breakers.
4.
While holding the ENT key on the MFD, restore power by closing the MFD circuit breaker.
5.
When the words
appear in the upper left corner of the MFD,
release the ENT key.
6.
Repeat steps 2 – 3 for the PFD(s).
7.
Using PFD #1, go to the GDL Configuration Page.
Figure 15-20. GDL 69 Configuration Page
8.
Press softkeys 12, 9, 6, and 3 in order to unlock this page.
9.
Using the FMS knob go to the SELECT GDL ANTENNA field.