The HP 37724A SDH/PDH Test Set with Option 005 is a field-portable instrument for testing and verifying Synchronous Digital Hierarchy and Plesiochronous Digital Hierarchy telecommunications networks. It generates and analyzes SDH signals up to STM-4 (622 Mb/s) and PDH signals at 2 Mb/s, 34 Mb/s, and 140 Mb/s, with full control over regenerator section, multiplexer section, and path overhead bytes. Option 005 adds structured PDH testing capabilities and enhanced jitter and wander measurement functions critical for signal quality assurance. The test set stresses network equipment through error, alarm, and G.783 pointer movement generation to exceed CCITT standards, making it suitable for installation, acceptance testing, commissioning, maintenance, R&D, and production environments.
Technical Specifications
Network Coverage
• SDH: STM-1 (155 Mb/s) to STM-4 (622 Mb/s)
• PDH: 2 Mb/s (E1), 34 Mb/s, 140 Mb/s
Electrical Interfaces
• 2.048 Mb/s (HDB3)
• 139.264 Mb/s (CMI)
• 155.52 Mb/s (CMI)
Optical Interfaces
• STM-1 (155.52 Mb/s) at 1310 nm and 1550 nm
• STM-4 (622.08 Mb/s) at 1310 nm and 1550 nm
Payload Mapping
• 2 Mb/s TU-12 structured payloads
• 34 Mb/s TU-3 structured payloads
• 140 Mb/s payloads
• Unframed, framed, or fully structured down to 64 kb/s timeslot
Add/Drop Capabilities
• 2 Mb/s and 140 Mb/s tributary channels
• STM-1 signals
• Overhead DCC channels
– Key Features
• Regenerator section, multiplexer section, and path overhead byte control
• Error and alarm generation exceeding CCITT standards
• G.783 pointer movement sequence generation
• Separate PDH ports configurable as drop/insert or transmit/receive
• Jitter and wander measurement (Option 005)
• Structured PDH testing at 2 Mb/s, 34 Mb/s, and TU12/TU2/TU3 levels (Option 005)
– Typical Applications
• Network installation and commissioning
• Equipment acceptance testing
• Field maintenance and troubleshooting
• Production testing
• R&D validation
– Compatibility & Integration
Supports optical modules including HP 37771A (STM-1) and HP 37776A (STM-1/4). Note: Options 004 and 005 are mutually exclusive.
