The EXFO EUI-90 ST Universal Interface Connector Adapter enables tool-less conversion between fiber optic connector types for seamless integration with EXFO test instruments. This adapter supports both APC and UPC polished connectors, delivering precision alignment and repeatable measurements. Direct endface access simplifies cleaning, while an integrated dust cap prevents contamination during storage or idle periods.
## Technical Specifications
• **Connector Type:** ST
• **Interface:** Universal Interface (EUI)
• **Insertion Loss:** ≤ 0.2 dB
• **Return Loss:** ≤ -65 dB
• **Repeatability:** ± 0.1 dB
• **Operating Temperature:** 0 °C to 55 °C
• **Storage Temperature:** -40 °C to 70 °C
## Key Features
• **Tool-Free Conversion:** Interchangeable connector swapping without additional hardware.
• **Dual Polish Support:** Compatible with angled (APC/EA) and non-angled (UPC/EI) ferrule finishes.
• **Precision Ferrule Concentricity:** High-quality materials ensure measurement integrity and repeatability.
• **Easy Maintenance:** Provides direct access to the connector endface for cleaning procedures.
• **Integrated Dust Protection:** Dust cap blocks light transmission and shields the adapter sleeve from environmental contamination.
• **APC Identification:** Green ring indicator on the EXFO Universal Baseplate identifies APC ferrules.
## Compatibility & Integration
The EUI-90 ST adapter integrates with a wide range of EXFO instruments, including FTB modules, IQS modules, benchtop systems, and handheld devices. Support extends to EXFO FiberBasix 100 and 500 Series light sources as well as EXFO OTDR platforms. Low insertion loss (≤ 0.2 dB) and low backreflection (≤ -65 dB) characteristics maintain signal integrity across measurement applications.
