The JDS Uniphase VA5503-FAS is a precision variable attenuator for single-mode optical networks requiring accurate control of optical signal levels. Handheld and portable, this instrument delivers manual attenuation adjustment with 0.1 dB resolution and maintains settings across power cycles. Its large-format LCD display provides real-time readout of attenuation values, making it essential for network testing, laboratory measurements, receiver characterization, and field system troubleshooting.
## Technical Specifications
• **Model:** VA5503-FAS
• **Manufacturer:** JDS Uniphase
• **Product Type:** Precision Variable Attenuator
• **Fiber Type:** Single-mode (SM)
• **Attenuation Resolution:** 0.1 dB
• **Connector Options:** Bulkhead connectors; FC/PC, FC/APC, SC/PC, and SC/APC available on similar JDS Uniphase products
• **Wavelength Calibration:** 830/1300 nm or 1300/1550 nm options
• **Power Source:** 9V lithium battery
• **Display:** Large-scale LCD readout
## Key Features
• Manual front-panel attenuation control with 0.1 dB step resolution
• Attenuation settings retained after power removal
• Selectable wavelength calibration bands
• Compact, field-deployable design
• Long-life battery operation for portable use
## Typical Applications
• Optical network testing and development
• Laboratory optical power level control
• Field system testing and troubleshooting
• Receiver testing and characterization
• Optical power management in single-mode systems
## Compatibility & Integration
Designed for integration with standard single-mode fiber optic systems and test equipment. Connector flexibility supports multiple industry-standard termination types.
