Keysight U8903B - Figure C-4 De-Solder the Wires; Figure C-5 Solder the BNC Cable to the Male End of the XLR Cable

Appendix C C
Keysight U8903B Service Guide 163
5 De-solder the wires.
Figure C-4 De-solder the wires
6 Sleeve in the 8120-1840 BNC cable into the hood. Solder the BNC cable center
connector to both XLR pin 2 and 3. Solder the BNC shielding to XLR pin 1.
Figure C-5 Solder the BNC cable to the male end of the XLR cable
7 Re-install the XLR metal body.