Satellite television signal quality level tester has analogue and digital filters with outputs adjusted to providing logarithmic input to LED level display

摘要

A satellite television signal quality level tester has analogue (3) and digital (4) filters with outputs fed to a digital to analogue converter (7) or digital sampler (14) and matching amplifier (17) adjusting (15) the analogue to digital level at the HF (High Frequency) detector (8) input to give logarithmic conversion for a threshold indicating (11) display (20).