Anritsu MS9020C Optical Loss Test Set w/ 1 MA9723A Sensor

The Anritsu MS9020C Optical Loss Test Set paired with the MA9723A Sensor delivers precision optical power and loss measurements across fiber optic networks. This integrated platform combines a mainframe optical power meter with a high-sensitivity germanium photodiode sensor, enabling accurate characterization of optical loss, return loss, and power levels across multiple wavelength bands. The system supports continuous wave and modulated light modes, accommodates dynamic ranges exceeding 67 dB with LD light sources, and includes a visible light source for fiber identification and fault location.

Wavelength calibration functionality enables direct absolute-value readings with 5 nm step compensation across three calibration points.

Technical Specifications

• Optical loss bands: 0.66 µm, 0.85 µm, 1.3 µm, 1.55 µm


• Measurement modes: Continuous Wave (CW), Modulated Light (270 Hz, 1 kHz, 2 kHz)


• Optical loss dynamic range: Up to 67 dB (with LD light source)


• Return loss measurement: 0 to 40 dB at 1.3 µm for single-mode fiber


• Display resolution: 0.01 dB / 0.1 dB (dBm/dB REL mode); 0.1% to 1% (W/W REL mode)


• Display units: W, W (REL), dBm, dB (REL), 4-digit format Sensor Specifications (MA9723A):


• Wavelength range: 0.75 µm to 1.8 µm


• Measurement range: -60 dBm to +3 dBm (at 1.3 µm, 0° to 40°C)


• Calibration wavelengths: 0.85 µm, 1.3 µm, 1.55 µm


• Measurement accuracy: ±5% (at -10 dBm, CW mode)


• Photodiode element: Germanium (Ge)


• Active area diameter: 1 mm


• Connector: FC adapter


• Dimensions: 30 mm (W) × 30 mm (H) × 37 mm (D)


• Mass: ≤100 g Environmental & Power:


• Operating temperature: 0° to +40°C (mainframe), 0° to +50°C (sensor)


• Storage temperature: -40°C to +70°C


• Power sources: AC adapter, Ni-Cd battery, UM-3 Alkaline/Manganese batteries


• Ni-Cd battery runtime: 4 hours (light on), 9 hours (light off); 6-hour charge time


• Auto power-off: 5 minutes inactivity

Key Features

• Selectable measurement averaging (On/Off)


• Visible light source (0.635 µm) for fiber identification and breakpoint detection to 5 km


• Flickering light function for enhanced visual identification


• Wavelength calibration with 5 nm step compensation


• Blanking capability

Compatibility & Integration

• Sensor connector: FC adapter


• Mainframe supports FC, ST, DIN, HMS-10/A, and SC connectors via adapter changes