Agilent / Keysight E1663A Electrical Interface Module

The Agilent/Keysight E1663A is a 1-slot C-size VXI electrical interface module designed for the HP Broadband Series Test System. It provides bidirectional SONET/SDH signal conversion between optical line interface modules and devices under test, handling data rates of 155.52 Mb/s or 52 Mb/s in Binary Coded Mark Inversion (CMI) format. The module performs automatic clock recovery from incoming data and applies real-time compensation for cable loss and signal degradation, ensuring signal integrity across the test interface.

– Technical Specifications

Data Interface
• Data rates: 155.52 Mb/s or 52 Mb/s
• Data format: Binary Coded Mark Inversion (CMI)
• Electrical input: 75 Ω unbalanced, BNC connector
• Maximum input amplitude: 0.5 Vpk
• Input withstand voltage: ±5 V
• Open and short circuit protection included
• Transmit clock input: ECL, SMA connector, 50 Ω termination to -2 V dc nominal
• Transmit data input: Binary NRZ format, SMA connector

Physical Characteristics
• Form factor: 1-slot C-size VXI module
• Dimensions: 12 × 10 × 8 in
• Weight: 10 lbs

Environmental Specifications
• Storage/shipment temperature: -40°C to +75°C
• Humidity: 50% to 95% RH (25°C to 40°C)
• Altitude: Up to 4 (unspecified units)

– Key Features

• Automatic clock recovery from received data streams
• Adaptive signal compensation for cable loss and attenuation
• Signal encoding to DUT-required levels and formats
• ACCESS LED: VXIbus backplane activity indicator
• SIGNAL LED: Input signal presence indicator
• Dual-rate capability supports both 155 Mb/s and 52 Mb/s SONET/SDH applications

– Typical Applications

Opto-electronic test and verification in broadband telecommunications systems. Electrical-to-optical and optical-to-electrical signal interface bridging for SONET/SDH protocol compliance and characterization.

– Compatibility & Integration

Integrates with HP Broadband Series Test System architecture. Partners with HP E1697A (155 Mb/s optical line interface) and HP E1617A (52 Mb/s optical line interface). Module communication via SMA-to-SMB RF adaptor cables.