Product Overview
The N7748C is a high-performance optical power meter based on a thermoelectrically cooled InGaAs detector, covering the 1250–1650 nm communication band (O/E/S/C/L bands). It features an ultra-wide dynamic range of -70 dBm to +23 dBm, supports auto-ranging, and delivers rapid response measurements. Its core advantages include industry-leading accuracy of ±0.03 dB, a high resolution of 0.001 dB, and multi-interface remote control capabilities, making it ideal for high-precision applications such as optical device R&D, fiber network deployment, and WDM system testing.
Key Features
Ultra-High Accuracy and Stability
Equipped with a thermoelectrically cooled InGaAs detector with temperature control accuracy of ±0.1°C, significantly reducing the impact of environmental fluctuations.
NIST-traceable calibration (1310/1490/1550/1625 nm wavelengths) with long-term stability better than ±0.05 dB/year.
Polarization-independent design (PDL < 0.02 dB), suitable for polarization-sensitive device testing.
Wide Dynamic Range and Fast Response
High-speed mode (<10 ms response time): Ideal for real-time monitoring of transient optical signals.
High-stability mode (<100 ms): Optimized signal-to-noise ratio for ultra-low power (-70 dBm) measurements.
Flexible Configuration and Expandability
Multi-interface support: Standard FC/APC, with optional FC/PC/SC/APC/LC fiber interfaces.
Modular design: Supports multi-channel expansion (up to 8 channels) for parallel WDM system testing.
Intelligent Operation
7-inch touchscreen: Displays real-time power, wavelength, loss, and other parameters with graphical trend analysis.
Remote control: USB/RS-232/GPIB interfaces with SCPI commands, compatible with LabVIEW, Python, and other development environments.
Data logging: Internal storage for 100,000 data points, supports CSV export and timestamp recording.
Typical Applications
Optical device R&D: Insertion loss (IL), return loss (RL) testing for lasers, optical modules, and filters.
Fiber network deployment: OTDR-assisted testing, fiber link loss evaluation, connector cleanliness inspection.
WDM system maintenance: Multi-wavelength power monitoring, channel flatness analysis, EDFA gain measurement.
Laboratory metrology: Serves as a reference standard for calibrating other power meters or light sources.
Detailed Technical Specifications
| Parameter | Specification |
|---|
| Wavelength Range | 1250–1650 nm (extendable to 800–1700 nm) |
| Power Range | -70 dBm to +23 dBm (standard), expandable to +27 dBm (high-power option) |
| Measurement Accuracy | ±0.03 dB (@1550 nm, 23°C±5°C) |
| Resolution | 0.001 dB (high-precision mode) / 0.01 dB (standard mode) |
| Detector Type | Thermoelectrically cooled InGaAs, active temperature control |
| Polarization-Dependent Loss (PDL) | <0.02 dB (typical) |
| Connector Interfaces | FC/APC (standard), optional FC/PC/SC/APC/LC |
| Communication Interfaces | USB 3.0, RS-232, GPIB, SCPI/LabVIEW compatible |
| Power Supply | AC 100–240 V / DC 12 V (dual power supply with built-in backup battery) |
| Dimensions/Weight | 320×240×80 mm / 2.5 kg (including battery) |
Options and Services
Optional Accessories:
Multi-channel expansion module (4/8 channels)
High-power sensor (supports +30 dBm input)
Portable protective case (IP54 rated)
Support Services:
Why Choose the N7748C?
Industrial-Grade Reliability: MIL-STD-810G certified for vibration/shock resistance, suitable for harsh environments.
Full Compatibility: Complies with ITU-T, Telcordia, and other international communication standards.
End-to-End Solution: Covers the entire lifecycle from R&D to production line testing.
For technical documentation or demo requests, please contact our support team.
