CATV Signal Level Meter Handhold Design Limit test and Auto test ... which are most widely used and favored by professionals in CATV industry at the least cost. It can be used to ... in the field can see the reverse path at the headend . Full, in-service, proof-of-performance analyzer. Fast, sensitive spectrum ... ,with QAM functionRY-S1127DQ 5MHz to 870MHz ,with QAM function. CATV Signal Level Meter