The Keysight E1686A is a C-size, double-slot VXI module that functions as an independent DS1/DS3 transceiver for high-performance telecom signal acquisition and testing. It transmits and receives DS3 and DS1/E1 signals simultaneously, with integrated DS3 channelization to source and measure DS1 signals embedded within DS3 payloads. The module also performs basic DS2 measurements and handles E1 signal insertion and measurement within DS3 streams.
Technical Specifications
The E1686A operates as a message-based VXI instrument supporting SCPI command control. It generates and detects frame-based alarms, introduces payload and overhead bit errors for testing, and provides all necessary frame rates, patterns, and line codes for DS1, DS2, DS3, and E1 signal handling.
Dual independent interfaces—DS3 (TX, RX, Clock In) and DS1/E1 (TX, RX, Clock In)—enable concurrent signal operations. Shared clock outputs and TTL trigger outputs support synchronization across multiple test channels and external systems.
– Key Features
• C-size, double-slot form factor for VXI chassis integration
• Independent DS3 and DS1/E1 transmit and receive paths
• DS3 channelization with embedded DS1/E1 signal sourcing and measurement
• Alarm generation and detection
• Payload and overhead bit error insertion
• Front-panel LED status indicators for TX, RX, and clock health on both DS3 and DS1/E1 interfaces
• Clock Out and Trig Out TTL connectors for external synchronization
– Typical Applications
• DS1/DS3 transceiver testing in telecom equipment development
• Embedded signal validation within DS3 multiplexed streams
• Frame-based error injection for robustness testing
• Multi-channel signal acquisition in VXI test systems
• Legacy telecom infrastructure characterization and maintenance
– Compatibility & Integration
The module complies with VXIbus standards and supports VXIplug&play for plug-and-play integration. SCPI messaging enables seamless control within automated test frameworks. As a legacy product, direct manufacturer support is limited; availability is typically through third-party suppliers.
