Erratic behaviour PPS Valid bit in L26-T

On our L26-t evb the pps valid bit turns off after a few pps-signals, then turns on again for one or two pps and off again. This is after half an hour with roughly 11 satellites. Does anyone recognise this?

Hi @CharlesT

I am sorry for the late reply.
About your question, i have some detail need you confirm as bellow:
1.Is your operation detail is:
Step1: PPS feature status is on: continuou few seconds
Step2: Turn off the PPS feature status: How long did it last?
Step3: Turn on the PPS feature status: continue for one or two PPS
Step4: Turn off the PSS feature status;
Step5: Wait half an hour
Then, module only have roughly 11satellits?
2.Did you think 11 satellites is abnormal?
3.Could you provide the entire nmea log of this question to me.
4.What is your test environment?

Best regards