ECal replaces the traditional calibration technique, which uses mechanical standards. With mechanical standards you are required to make numerous connections to the test ports for a single calibration. These traditional calibrations require intensive operator interaction, which is prone to error. With ECal, a full one- to four-port calibration can be accomplished with a single connection to the ECal module and minimal operator interaction. This results in faster and more repeatable calibrations.
The ECal modules are transfer standards capable of transferring the factory calibration accuracy to your network analyzer. They are characterized by Agilent using a precision calibration technique (similar in accuracy to TRL) that is traceable to the National Institute of Standards and Technology (NIST). Each calibration modules unique S-parameter data is stored in the modules memory. During calibration, ECal uses this data to calculate the error terms for your network analyzer. All measurements on either insertable or non-insertable devices are traceable to NIST.
Unlike the traditional mechanical technique, ECal only requires one connection to perform a full one- to four-port calibration from the calibration module to the test ports.
By reducing the number of connections required for a calibration, you can calibrate faster, so you save time and make measurements sooner, reduce the chance of operator error, for greater confidence in your calibrations and reduce the wear on connectors, for lower repair costs on both the test port connectors and calibration standards.
The 85090 family of RF ECal modules provides calibration across the frequency range of the ENA and 8753 series of network analyzers. The N4690 family of microwave ECal modules provides calibrations through 67 GHz for PNA-L and PNA network analyzers. The N4430 family of four-port modules provide calibration for the ENA, PNA, and 4-port PNA-L, and any multiport solutions.