Can I retrofit my 86100A/B with option 001, 12.5GHz trigger capability?

Yes. To upgrade an 86100A or 86100B from the standard 2.5 GHz trigger capability, order Keysight part number E2660-68710, Option 001 Retrofit Kit. After receiving the kit, contact Keysight and schedule to have the retrofit performed at a qualified service center. The service center will have the necessary test equipment to retest the timebase after the installation. The price of the retrofit includes installation labor and calibration.