HP / Agilent 3789B DS3 Transmission Test Set

The HP/Agilent 3789B DS3 Transmission Test Set delivers end-to-end DS3 circuit testing and troubleshooting from a single access point. This instrument generates and analyzes DS3 signals at 44.736 Mbps, supports unframed and framed test patterns (M13 and C-bit parity), and includes built-in demultiplexing for simultaneous DS1/DS3 measurements. Bidirectional testing on C-bit parity equipment enables simultaneous signal analysis in both directions, while comprehensive error injection capabilities stress-test interfaces and detect transmission faults.

Technical Specifications Signal Generation & Detection

Supports unframed, M13, and C-bit parity test patterns

Generates and detects DS3 Idle signals

DS3 operating rate: 44.736 Mbps

Built-in demultiplexer for DS1 signal extraction from DS3 access point Testing Capabilities

Error injection facility for equipment stress testing

Bidirectional simultaneous testing (C-bit parity framing)

Single access point measurement architecture Power & Physical

Line voltage: 100, 115, 120, or 220, 230, 240 VAC ±10%

Power dissipation: less than 200 VA

Dimensions: 213 mm H × 366 mm W × 460 mm D

Weight: 9 kg

Key Features

Dual DS1/DS3 signal measurement from single DS3 port

Bidirectional path characterization on C-bit parity systems

Complete framing format flexibility for legacy and modern deployments

Error injection for validation and margin testing

Typical Applications

DS3 transmission line commissioning and maintenance

Carrier circuit acceptance testing

Jitter and signal integrity analysis

Interface troubleshooting and performance verification

Compatibility & Integration Works with equipment using unframed, M13, and C-bit parity frame formats. Requires DS3 access point connection for measurement.