| RS321 | RS642 | RS644 | |
| Movement in XYZ-axis: | 300x200x100 mm | 600x400x200 mm | 600x400x200 mm |
| Size: | 620x400x550 mm | 920x600x750 mm | 920x600x950 mm |
| Weight: | 20 kg | 27 kg | 35 kg |
| Accuracy: | +/- 0.3 mm |
| Min step size: | 1 mm |
| Line voltage: | 230V/110V, -15%, +10% |
| Line frequency: | 50Hz/60Hz, +/- 2Hz |
| Power consumption: | <25W |
| Power con. standby: | <20W |
| Environment temp.: | +10 C to +35 C |
| Humidity: | 20% to 80% |
| Communication: | RS-232 or Ethernet |
| Software: | Requires Windows 10. Configurable for most spectrum analyzers. Configurable for National GPIB-adapters. |