Agilent/Keysight N7747C High Sensitivity Optical Power Meter

The Keysight N7747C is a high-performance, two-channel optical power meter designed for demanding power measurement applications where accuracy and sensitivity are paramount. It is a direct successor to the Agilent N7747A and offers comparable optical performance to the 81634B modules. This instrument is engineered with actively cooled InGaAs detectors and advanced analog electronics to achieve exceptionally low noise and drift, ensuring a stable zero-signal level. The N7747C is characterized by its high linearity and very low polarization dependence, which contribute to its peak accuracy across the entire power range.

This optical power meter is well-suited for applications requiring precise measurements, including insertion loss (IL) and polarization dependent loss (PDL) spectral measurements when integrated with Keysight tunable lasers and a polarization synthesizer. Its capabilities are further enhanced by a comprehensive hardware and trigger concept, alongside a large memory capacity, providing flexibility for various testing scenarios. The instrument supports user-exchangeable connector receptacles compatible with the 81000xI series, accommodating a wide range of fiber optic connector standards. Control and data access can be managed via LAN or USB, with a browser-accessible graphical user interface that requires no software installation.

### Technical Specifications

**Measurement Capabilities:**
* **Power Range:** -110 dBm to +10 dBm
* **Uncertainty:** ±2.5% at reference conditions
* **In-range Linearity:** Below ±0.005 dB for high IL measurement accuracy
* **Polarization Dependence:** Very low, contributing to stability and PDL accuracy
* **Data Acquisition Rate:** Up to 1 million samples per second per port
* **Memory and Buffer:** 1 M samples per port plus 1 M per port buffer for continuous logging
* **Averaging Times:** Configurable from 25 µs to 10 s per sample
* **Swept-Wavelength Measurements:** Capable of high dynamic range measurements (> 80 dB) when combined with tunable lasers and polarization synthesizers. Offers accelerated concurrent power ranging and bi-directional wavelength sweeping for fast update rates.

**Detector Technology:**
* Actively cooled InGaAs detectors

**Analog Output:**
* Provides linear feedback of optical power level for automated alignment and optimization routines
* Standard BNC connector with 0 to 2 V output

**Connectors and Interfaces:**
* **Optical Input:** Accepts Keysight 81000xI connector interfaces, which are user-exchangeable
* **Remote Control:** LAN and USB
* **User Interface:** Browser-accessible GUI via LAN or USB
* **Triggering:** Comprehensive hardware and trigger concept
* **Analog Output:** BNC connector

**Physical and Environmental:**
* **Operating Temperature:** Within specified limits (refer to user manual for precise range)
* **Altitude:** Up to 2000 meters
* **Relative Humidity:** Maximum 80% RH, non-condensing
* **Clearance:** Requires adequate air clearance for cooling (75 mm rear, 25 mm sides)
* **Operation Position:** Designed for upright and horizontal operation; not for outdoor use

**Compatibility and Software:**
* Programming code compatible with Keysight Lightwave solution
* Can be controlled by the photonic application software suite for spectral measurements

**Data Logging and Storage:**
* Large memory and buffer enable data acquisition for swept-wavelength and transient measurements
* Memory for 1 M samples/port plus 1 M/port buffer for continuous logging

### Why Choose Aumictech for Keysight N7747C?
At Aumictech, we specialize in supplying high-end optical test and measurement equipment. Whether you need the unparalleled accuracy and sensitivity of the Keysight N7747C for critical component testing, reliable power logging for long-term characterization, or fast measurement speeds for high-throughput production environments, our team ensures the Keysight N7747C delivers maximum performance for your application.