Installation Note N9020-90257 21
Option BBA, Analog Baseband I/Q Inputs Retrofit Kit
7. Refer to Figure 15. Install the BBIQ Interface Board, N9020-60094 into the front frame passing 
the BNC connectors through the holes.
8. Secure the BBIQ Interface Board with two 0515-0372 screws (2). Torque to 9 in-lbs.
Figure 15  BBIQ Interface Board Installation