HP 53132A Assembly And Service Manual page 175

Chapter 4 Retrofitting Options
To Retrofit A3 1.5/3.0/5.0/12.4 GHz Channel Assembly (Option
015/030/050/124)
To Retrofit A3 1.5/3.0/5.0/12.4 GHz Channel
Assembly (Option 015/030/050/124)
NOTE Retrofitting to Option 015 (1.5 GHz), Option 030 (3.0 GHz), Option 050
(5.0 GHz), and Option 124 (12.4 GHz) must be performed by technicians at
an HP Service Center.
Assembly-Level Service Guide 4-3