STALO control

The earlier generations of Vaisala RVPs used a legacy Sigmet digital automatic frequency control (DAFC) device for STALO control. RVP10 is using a new approach with off-the-shelf industrial automation products for STALO control. For controlling STALOs having RS-422 serial data interfaces, the Moxa NPort IA5150AI-T device is used. It receives control commands over the internal radar network from the RVP10 server, and converts them to RS-422 serial output. Currently, this is the only method provided for controlling STALOs, but other methods can be implemented on request.