Keysight Technologies E8267D Installation Note page 13

Add Option UNY (Enhanced Ultra-Low Phase Noise) Kit Part Numbers: E8251-60690
Install new A43 board and cables (For E8257D/57N and E8663D with Serial
Prefixes >= US5150/MY5150)
Refer to Figure 5.
1. Position the signal generator with the front panel facing you.
2. Disconnect W139 and remove A43.
3. Replace A43 with the new part, E8251-60833 and reconnect W139.
4. Remove A8 board to install cables.
5. Use cable retainer within the kit to Install W138, E8251-20488.
6. Install W140, E8251-20489. Refer to Figure 6.
7. Connect remaining end of W138 to remaining end of W140.
8. Re-install A8 board.
Figure 5 A5 Sampler, A-6 Frac-N, A45 Frac-N, and A46 Offset
Installation Note E8251-90396 13