| 001 | Type-N (f) RF connectors |
| 003 | Attenuator panel mounting capability |
| 005 | TNC (f) RF connectors |
| 101 | BNC Connectors |
| 301 | Delete attenuator panel mounting |
| 910 | Additional operating and service manual |
| H25 | 20MHZ TEST & CAL BY HP |
| J19 | |
| UKS | Certificate of Calibration |