The ACM2708 from Copper Mountain Technologies is an Automatic Calibration Module (ACM) for 50 Ohm VNAs that operates from 20 kHz to 8 GHz. It is a fully automatic USB-controlled and powered electronic calibration module. This 75-ohm calibration module is designed to be used with native 75-ohm VNAs (S7530) and also covers automatic calibration for 50-ohm VNAs with the help of 50 to 75-ohm matching pads. It helps minimize the number of steps required by technicians, reduces the risk of human error, and expedites the calibration process. Automating the calibration routine minimizes the wear and tear of the analyzer & RF cables.
The ACM2708 also has a factory characterized in-line attenuator that provides an attenuation of 20 dB. The attenuator acts as a simulated device under test (DUT). To perform full two-port calibration, each end of the ACM need only be connected to the analyzer once, as opposed to seven connections when doing the manual calibration. It is available in a package that measures 115 x 40 x 25 mm and has N-type male/female connector options.
