C Appendix C
162 Keysight U8903B Service Guide
Modify a Cable for the U8903B CMRR test
1 Order the following parts as material:
2 Cut one end of the 8120-1840 BNC cable shown in Figure C-1.
Figure C-1 8120-1840 BNC cable
3 Locate the male end of the XLR cable, then turn the black sleeve counter-clockwise to
loosen it from the metal body.
Figure C-2 Male end of the XLR cable
4 Retrieve the sleeve and wire hood to uncover the soldering wire.
Figure C-3 Uncover the soldering wire
Table C-1 Parts to order
Part Quantity
U8903-61301, male XLR to female XLR, 2 m, Black 1 piece
8120-1840, BNC male to straight BNC 48-in 1 piece