Installation Note N9048-90017 11
Option EXM, External Mixing Upgrade Kit
Add Cables to A13 Front End and A15 Front End Controller, RF/Microwave 
Instruments
1. Locate the flexible coax cable in the Opt EXM Cable Kit. This is cable W30 and should be 
labeled "8121-2027".
2. Refer to Figure 6. Connect the end of W30 labeled “903” to A15J903. 
Figure 6  A15J903
This procedure only applies to RF and microwave instruments (frequency range options 503, 508, 
and 526). If your instrument has frequency range option 544 or 550, refer to “Add Cables to 
A13 Front End and A15 Front End Controller, Millimeter Wave Instruments” which 
follows.