Suddendly the configuration of the Vertex is gone. I am not sure if the system has restarted (release 4.91.016.0). I checked the logs but the only error I found was (the Vertex is being controlled via RPI):
Vertex>syst:err? -222, Data value out of range;Parameter Value Out of Range: PORT_INTERFERER_AWGN_NOISE_LEVEL, index: 1,5,0, requested value: -16, permitted range: [-79,-16.3]
How can I check the UPTIME of the Vertex? In the Z:\Spirent\Log folder I couldn't find any further indication of an error.