Hi, I have Trigg- TT 22 installed this spring and after about 70 flight hours I am getting warning message on display : WARNING DPSK UNLOCK. After pressing ENT button normal 1202 squawk reappears for about only a minute . Public ADS-B performance report from my flight is fine. Anyone had similar warning? What does DPSK stands for? There is no help in user manual on this issue. Thank you. Pavel