| 003 | Built-in Attenuator |
| 007 | Polarization maintaining Panda |
| 021 | Straight Contact Output Connector |
| 022 | Angled Contact Output Connector. |
| 023 | Angled Non-Contact Output Connector (Diamond HMS-10/HP/HRL) |
| 0B2 | Operating Manual |
| 100 | Performance Upgrade from 8168D |
| 101 | Performance Upgrade from 8168E |
| 513 | 1520NM-1625NM +6DBM @ 1560-1620NM |
| 516 | 1480nM-1590nM, +7DBM @ 1530-1570 |
| UK6 | Commercial calibration with test results data |
| W32 | 3 Years Return for Calibration Service |
| W52 | 5 Years Return for Calibration Service |