| 220-V | Setting |
| 40-48 | |
| 6001 | DS1Wideband Jitter Measurement |
| 6002 | DS1 Jitter Spectral Analysis |
| 6003 | DS1 Jitter Generation |
| 6004 | Clock Recovery |
| 6005 | IEEE-488 Remote Control |
| 6006 | Precision Time Base |
| 6007 | G.703 Wideband Jitter Measurement and Generation |
| 6008 | G.703 Jitter Spectral Analysis |
| 6009 | ANSI T1.403 PRMs |
| 6010 | Frame Relay New Unit Option |
| 6011 | Frame Relay Factory Upgrade |