JDS Uniphase RM3750B

The JDS Uniphase RM3750B is a portable benchtop optical measurement instrument for precise characterization of backreflection, insertion loss, and optical power in single-mode and multimode fiber systems. Built around a 2 mm InGaAs detector and dual integrated light sources, it delivers field-ready accuracy for telecommunications component testing, connector validation, and production quality assurance.

## Technical Specifications

**Optical Measurement Performance**
• Backreflection range: 0 to -75 dB with ±0.4 dB relative accuracy
• Insertion loss measurement: Up to -80 dBm
• Optical power measurement: -80 dBm with ±0.25 dB absolute accuracy at -10 dB and ±0.05 dB (loss 5 dB) relative accuracy
• Extraneous backreflection compensation integrated for enhanced accuracy
• User-calibration mode with reference jumper verification

**Wavelength and Sources**
Dual-wavelength internal light sources standard at 1310 nm ± 20 nm and 1550 nm ± 20 nm. Single-mode configurations available with sources at 980, 1480, 1625, and 1650 nm. Multimode models equipped with 850 and 1310 nm sources.

**Fiber Compatibility**
Designed for 9/125 µm single-mode fiber. Supports multimode types: 50/125 µm and 62.5/125 µm.

**Electrical & Physical**
100–240 V AC, 50–60 Hz input; 25 VA maximum consumption. Internal rechargeable battery for portability. Two-line 16-character LCD display. Dimensions: 26 × 11 × 26 cm; weight: 4 kg. Operating temperature: 0 to 40 °C; storage: -40 to 70 °C; humidity to 95% RH.

## Key Features

• FC/APC ultra-low backreflection output connector
• RS-232 interface with optional GPIB converter and SCPI protocol support
• Foot pedal data logging to computer or serial printer
• Detector: 2 mm InGaAs

## Typical Applications

• Connector backreflection and loss testing
• Component characterization
• Installation verification and acceptance testing
• Jumper manufacturer quality assurance
• Field evaluation of optical assemblies

## Compatibility & Integration

RS-232 serial connectivity enables integration into automated test systems via optional SCPI command language support. Data logging via foot pedal provides convenient field documentation. Optional RS-232 to GPIB converter extends legacy system integration.