For example: Agilent E4440A or Anritsu 68369
Keysight / Agilent
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Keysight / Agilent 8163B
HP Agilent 8163B Lightwave Multimeter Mainframe

Category: Optical Power Meters
Keysight / Agilent 81650
Laser Source Module (FP) 1310nm 0

Category: Plug In / Part / Component / Module
Keysight / Agilent 81655
Laser Source Module (FP) 1310nm 13

Category: Plug In / Part / Component / Module
Keysight / Agilent 81657A
Dual Fabry-Perot Laser Source, 1310nm & 1550nm, >13dBm (20mW)

Category: Optical Sources
Keysight / Agilent 8165A
1mHz - 50 MHz, Programmable Signal Source

Category: Signal Gen/Synthesizers/Sweepers
Keysight / Agilent 81940A
Agilent 81940A Compact Tunable Laser Source with Continuous Sweep Mode, 1520nm to 1630nm

Category: Tunable Lasers
Keysight / Agilent 81949A
81949A Compact Tunable Laser Source, 1520nm to 1630nm

Category: Tunable Lasers
Keysight / Agilent 81960A
Agilent 81960A Fast Swept Compact Tunable Laser Source, 1505nm to 1630nm

Category: Fiber Optics
Keysight / Agilent 81980A
Compact Tunable Laser Source with Continuous Sweep Mode, 1465nm to 1575nm

Category: Optical Sources
Keysight / Agilent 81989A
Compact Tunable Laser Source, 1465nm to 1575nm

Category: Optical Power Meters
Keysight / Agilent 82341C
Agilent 82341C ISA High-Performance GPIB Interface Card for Windows 95/98/NT/2000

Category: Networking
Keysight / Agilent 82341D
High-Performance GPIB Interface for Windows 95

Category: Plug In / Part / Component / Module
Keysight / Agilent 83017A
Agilent 83017A Microwave System Amplifier, 0.5 to 26.5 GHz

Category: Microwave Amplifiers