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Automatic Calibration Modules
XC5244
Product Features

Frequency range:

10 MHz to 40 GHz (2.92 mm)

10 MHz to 44 GHz (2.4 mm)

Number of ports: 2

Impedance: 50 Ohm

Connector type: 2.92 mm, 2.4 mm

Connector configuration: female-female, male-male, male-female

ACMs include high-frequency measuring connectors for connection to the analyzer ports, a USB connector for control, several different reflection and transmission calibration standards, and solid state RF switches. The accurately measured values of the calibration standard’s S-parameters are stored in the ACM internal memory (factory characterization). The analyzer software performs auto calibration using ACMs.


During the calibration, various calibration standards and THRUs are alternately connected to the device ports. The measured S-parameters of the calibration standards and the data from the ACM memory are used to calculate the calibration coefficients of the analyzer. In addition to the factory characterization, up to three user characterization can be saved to the ACM memory. User-defined characterization allows you to take into account adapters or other matching devices on the module ports. ACM has an additional state – attenuator – which is not used during calibration. The attenuator is used to check the calibration through a special analyzer function that compares the measured S-parameters of the attenuator with the values stored in the ACM memory. To reduce calibration errors when using ACMs, temperature compensation is used over the full range of operating temperatures (18 °C to 28 °C). Thermal compensation is a software function that corrects ACM characterization data depending on the ambient temperature. The temperature dependence of the S-parameters for each AСM is factory-measured and stored in the ACM memory.


The XC7204, XC5206, XC5209, XC5220, XC5232, and XC5244 models support 1- and 2-port calibrations.


The XC5409 and XC5420 models support 1-, 2-, 3-, and 4-port calibrations.

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