| U8031A-0E3 | AC input power line voltage 207 to 253 VAC, 47 to 63 HZ |
| U8031A-0E9 | AC input power line voltage 90 to 110 VAC, 47 to 63 HZ |
| U8031A-0EM | AC input power line voltage 104 to 126 VAC, 47 to 63 HZ |
| U8031A-0L1 | User’s and service guide, CD-ROM |
| U8031A-1CM | Rackmount kit - mounts one with blank filler panel included |
| U8031A-ABA | English language user guide, printed |
| U8031A-ACF | Japan - Japanese user guide, printed |
| U8031A-UK6 | Commercial calibration certificate with test data |
| 1CM068A | |