The Agilent N3977A Handheld Automated Optical Attenuator is a high-end, user-friendly precision instrument for field-testing of fiber optical systems featuring very high productivity, power handling of up to +23dBm, return loss of less than -40 dBm and low wavelength dependence.

Features:

• robust, rugged construction
• easy to learn and use
• highly functional
• practical cases to protect instruments in transit also available