| Plug-In Unit | Min. Deflection | Bandwidth (3dB) | Rise Time |
| 3S1 dual channel | 2 mV/Div | DC – 1 GHz | 350 ps |
| 3S2 dual channel | 2 mV/Div | Depends on Sampling Head | |
| 3S3 dual channel | 2 mV/Div | DC – 1 GHz | |
| 3S5 dual channel programmable Digital Readout für 568 | 2 mV/Div | Depends on Sampling Head | |
| 3S6 dual channel programmable Digital Readout für 568 | 2 mV/Div | Depends on Sampling Head,Connection via 568 | |
| 3S7 TDR Sampler, single channel | |||
| 3S76 dual channel | 2 mV/Div | DC – 1 GHz | 350 ps |