Condition: Seller refurbished

Calibration expiry Feb 2026. In good working condition.

From the manufacturer:

Measurement capability: attenuator

• settling time: 20 ms attenuation, 100 ms power
• 0.1 to 1000 dB/s attenuation transition speed (selectable)
• +23 dBm input power
• 1.2 dB insertion loss

Measurement capability: power meter

• Wavelength range: 1260-1640 nm
• Power range: -80 to +10 dBm
• Polarization dependence: <0.01 dB

System capability

• One attenuator channel and two power meters in one half-width rack unit
• Fully compatible with programs developed using the Keysight 8157x and 8156x modular attenuators
• Includes powerful and user-friendly GUI software
• Two instrument configurations can be stored and recalled

The Keysight N7751A combines an attenuator with 2 front-panel power meter channels, offering exceptional performance at a low price. The power meters permit measurements from any point in the measurements setup and assist in calibrating power offsets with respect to the attenuator output.

Extension of N77xx-series

The N7751A attenuator is an extension to Keysight's high density N77xx-family that establishes a new standard in space-saving fiberoptic instrumentation.

Features and Benefits

• Compact instrument combines and integrates multiple functions for setting attenuation and power levels and optical power measurement to reduce CAPEX and floor space.
• Fast and precise setting of optical power levels with settling times of 100 ms for improved test throughput.
• Active power control to keep output power constant
• The power meters support convenient power offset calibration of the attenuators.
• The instrument can be controlled via LAN and USB, as well as GPIB for compatibility with existing equipment.
• An easy-to-use and intuitive graphical user interface software speeds up the integration process.

Applications

• Optical transceiver testing
• Optical network integration testing

Please refer to manufacturer's website for more information.