We received your mail, But our mail can't send to your email address. Can you change a mail address? 2 days ago
We can't send an email to your address, Our mail have been return. Please send a email to firstname.lastname@example.org 4 days ago
Sorry for this problem, We just send a wrong email address.
We will contact you immediately
Best Regards 4 days ago
This error display may caused by signal sour unlock. it is a hardware issue. Our manager contacted you few week ago to do a repair but we didn't receive your instrument. Our manager will contact to again to fix your instrument by factory repair.
Best Regards 7 days ago
I see a red * in you screen, If you set the sweep speed to fast mode it will show this.
In fast sweep mode it may get some error point that may cause this result. please set the sweep speed to middle or slow to do the test again. 21 days ago