For example: Agilent E4440A or Anritsu 68369
Oscilloscopes
Instek GOS-6051
50MHz, Analog Oscilloscope with Cursor Measurement and Frequency Counter
Manufacturer: Instek
Lecroy HDO8108
1 GHz, 8 Ch, 12-bit, 2.5 GS/s, 50 Mpts/Ch High Definition Oscilloscope
Manufacturer: Lecroy
Lecroy LC534AL
Lecroy LC534AL Quad Ch Digital Color Oscilloscope, 1 GHz, 500 Ms/s, 2 Mpt
Manufacturer: Lecroy