Agilent/Keysight 3776A

The Agilent/Keysight 3776A PCM Terminal Test Set is a specialized instrument for comprehensive performance evaluation of Pulse Code Modulation systems and equipment operating within CEPT/CCITT networks. It performs analog and digital interlacing measurements across voice, PCM, and data applications, supporting A-A, A-D, D-A, and D-D measurement modes with 30/31 channel voice test capability. The instrument interfaces via VF (Voice Frequency) and PCM connections, enabling multiplexer testing to CCITT Recommendations G.712 through G.714.

Optional datacom measurements (Option 001) extend functionality to CCITT "O" Series Recommendations for telecommunications conformance testing. Direct output to printer or plotter supports efficient documentation and reporting workflows.

Technical Specifications

• Measurement Modes: A-A, A-D, D-A, D-D


• Voice Test Capacity: 30/31 channels


• Network Protocol Support: CEPT/CCITT


• Standards Compliance: CCITT Recommendations G.712 to G.714


• Datacom Option: CCITT "O" Series Recommendations (Option 001)

Key Features

• Dual-interface design supports both VF and PCM signal paths


• Analog and digital interlacing within legacy telecommunications networks


• Flexible measurement architecture accommodates voice, PCM, and data test scenarios


• Direct hardcopy output via printer or plotter integration

Typical Applications

• PCM multiplexer validation and performance verification


• Legacy CEPT/CCITT network equipment characterization


• Voice circuit quality assessment across analog-to-digital conversion chains


• Data transmission compliance testing in telecommunications infrastructure

Compatibility & Integration The 3776A integrates with VF and PCM interfaces standard to CEPT/CCITT telecommunications equipment. CCITT G.712 to G.714 compliance enables testing of multiplexers and terminal equipment in accordance with established telecommunications recommendations. Option 001 extends measurement scope to datacom applications under CCITT "O" Series standards. Status: This product is obsolete and no longer sold by Keysight. Limited self-support resources may remain available through the Keysight website. Third-party service providers may offer repair and calibration services.