The HP E5970A is a handheld optical power meter for precise measurement across the 800 nm to 1600 nm spectral range. It measures optical power from −70 dBm to +11 dBm and supports both dBm and Watts display units. The instrument accommodates single-mode (9/125 µm) and multimode (50/125 µm) fiber types via universal connector interfaces. Four preset wavelength calibration points—850 nm, 1300 nm, 1310 nm, and 1550 nm—enable rapid setup for common telecom and datacom applications. Built-in modulation recognition detects 270 Hz, 330 Hz, 1 kHz, and 2 kHz signals across the measurement range, with extended detection limits at 850 nm. The reference value memory stores independent calibration data for each wavelength and accepts presettable values from +30 dBm to −80 dBm. Automatic zeroing occurs 20 seconds after power-on and every 10 minutes during operation. The instrument runs on two AA batteries (1.5V alkaline or 1.2V NiCd) and includes a 20-minute auto-off timer. Weighing 500 g and measuring 195 mm × 95 mm × 49 mm, the E5970A operates from −10°C to +55°C and meets EN 50081-1 and EN 50082-1 EMC standards. Field maintenance involves standard connector and housing cleaning procedures. Factory recalibration is recommended every 2 years.
Technical Specifications
• Wavelength range: 800 nm to 1600 nm
• Optical power range: −70 dBm to +11 dBm
• Fiber compatibility: 9/125 µm to 50/125 µm
• Measurement units: dBm or Watts
• Preset wavelengths: 850 nm, 1300 nm, 1310 nm, 1550 nm
• Modulation frequency recognition: 270 Hz, 330 Hz, 1 kHz, 2 kHz (+6 dBm to −60 dBm; 850 nm: +6 dBm to −45 dBm)
• Reference range: +30 dBm to −80 dBm (wavelength-specific memory)
• Auto-off timer: ~20 minutes (disableable)
• Auto-zeroing: ~20 seconds after power-on, then every ~10 minutes
– Key Features
• Universal connector interface with 2.5 mm adapter compatibility
• Independent reference memory for each calibrated wavelength
• Display-to-memory transfer function for custom reference values
• Dual battery option: alkaline (1.5V) or NiCd rechargeable (1.2V)
• Operating temperature: −10°C to +55°C; storage: −40°C to +70°C
• Non-condensing humidity environment
– Typical Applications
• Fiber optic network installation and commissioning
• In-service optical link characterization
• Component and subsystem power verification
• Field maintenance and troubleshooting
– Compatibility & Integration
The E5970A integrates with the 81005-series connector interface family, including SC (81005JA) and SMA (81005KI) adapters.
