The ACM4520 is a fully automatic, USB-controlled and powered electronic calibration module that supports up to 4-port calibration. It reduces manual reconnection steps by presenting factory-characterized calibration standards (Open, Short, Load, Thru) internally. This design minimizes technician error, lowers cable wear, and accelerates the calibration routine. A built-in 20 dB attenuator acts as a “simulated DUT” for confidence checking, and the module can recall its factory-stored DUT to verify calibration integrity.
Key capabilities and advantages
Technical specifications and parameters
| Frequency range | 100 kHz – 20 GHz |
| Impedance | 50 Ω |
| Number of reflection states | 12 (3 per port) + a Thru. |
| Characterization points | up to 1601. |
| Power consumption | ~0.4 W. |
| Connectors | type N female or 3.5 mm female (depending sub-model). |
| Directivity / Matching | 10 MHz–10 GHz: Directivity ~46 dB, Source Match ~40 dB, Load Match ~46 dB. |
| Maximum input power | 0 dBm |
| Damage level | +18 dBm |
