Specifications
General Parameter Value Interfaces Proprietary interface cable connected to 81618A or 81619A interface module Display None (uses mainframe display) Warm-up Time 40 min
Physical Parameter Value Power Supply Powered via the 81618A/81619A interface module from the mainframe Operating Temperature 0 °C to +40 °C Dimensions (W×H×D) 55 mm × 50 mm × 85 mm
Optical & Sensor Specifications Parameter Value Detector Element Material Germanium (Ge) Sensor Active Area Diameter 5 mm Wavelength Range 850 nm to 1650 nm Optical Power Measurement Range -50 dBm to +27 dBm Maximum Safe Input Power +28 dBm Polarization Dependence < ±0.01 dB (1200 nm to 1550 nm) Spectral Ripple < ±0.01 dB (1200 nm to 1550 nm)
Measurement Accuracy & Calibration Parameter Value Linearity ±0.015 dB (-20 dBm to +23 dBm) Calibration Cycle Interval 2 years
Physical & Mechanical Properties Parameter Value Aperture Diameter 5 mm
Environmental & Compliance Parameter Value Storage Temperature Range -40 °C to +70 °C
Compatibility & System Accessories Parameter Value Compatible Mainframe Models 8163A, 8163B, 8164A, 8164B, 8166A, 8166B Compatible Interface Modules 81618A (Single Channel), 81619A (Dual Channel) Fiber Type Compatibility Single-mode (SM) and Multimode (MM)
Performance Parameter Value Noise (peak-to-peak) < 100 pW (1250 to 1650 nm), < 200 pW (950 to 1250 nm), < 10 nW (850 to 950 nm) Return Loss > 40 dB
Inputs & Outputs Parameter Value Analog Output Voltage 0 to 2 V (into open circuit, max. 10 kΩ output impedance)
Physical Characteristics Parameter Value Attached Cable Length 2 m
Connectivity Parameter Value Cable Connector Type 15-pin D-Sub Adapter Compatibility Keysight D-type thread-on adapters (e.g., 81624DD)
Technology
Germanium (Ge) Photodiode Detector
Applications
High-power optical power measurement, optical component testing, and fiber optic network verification
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