- The SOPM is the first of a new family of virtual type instruments equipped with fiber optic links that TESEO is developing for inclusion in EMC test benches.
- The SOPM is a virtual instrument in that it exploits the cheap computing capability of a PC avoiding the use of an on-board microprocessor and dedicated firmware. To be operative it needs to be connected to a PC but, on the other hand, it can be offered at a very competitive price. Furthermore EMC benches tend to become all automatic with a PC at the center of the system and in the rare cases in which a PC is not permanently available, a portable PC can be utilized for the duration of the test.
- The adoption of the optic cable encourages the placement of the power meter in an electromagnetically hostile environment, like the inside of an anechoic chamber. The SOPM01 is the only power meter that can be located close to the antenna in the radiated immunity test setup.
- The main characteristics of the system are:
+ three measurement channels
+ CW power or voltage or current measurements from 10 kHz to 1 GHz
+ 53dB min dynamic range (power from -40 to +13dBm)
+ small size, battery powered sensor unit
+ standard 50 Ohm input impedance
+ shielding to more than 200 V/m from 10 kHz to 1 GHz
+ RS232 optical interface with PC
+ computer based, low cost
+ number of SOPM01S satellite unit cascadable in daisy chain: 8 max
+ protocol information: SOL (see user’s manual)