For example: Agilent E4440A or Anritsu 68369
Protocol Analyzers
MERLIN Bluetooth Protocol Analyzer&Generator
Bluetooth Protocol Analyzer&Generator

Manufacturer: MERLIN
SyntheSys Research BSA17500-CSI
BERTSCOPE 17.5 GB/S PATTERN GENERATOR AND ERROR ANALYZER

Manufacturer: SyntheSys Research
Catalyst CSU-0137 Conquest Series
Lecroy Catalyst CSU-0137 Conquest Series Bus & Protocol Analyzer w/ Accessories

Manufacturer: Catalyst
Keysight / Agilent J7232A
J7232A OmniBER OTN 2.5Gb/s Communications Performance Analyzer

Manufacturer: Keysight / Agilent