The HP/Agilent 3764A is a portable digital transmission analyzer designed for error performance testing of high-speed digital transmission systems. It delivers pattern generation, error detection, and error analysis across multiple data rates and formats. Three versions accommodate different test requirements: the standard 140 Mb/s configuration, a multiple-frequency option supporting CEPT bit-rates of 2, 8, 34, and 140 Mb/s, and a jitter-capable version with timing jitter measurement at 140 Mb/s. The instrument serves design, development, commissioning, and maintenance workflows in telecommunications and data communication applications.
## Technical Specifications
**Generator Section**
• Data rate range: 1 kbit/s to 170 Mbit/s (binary-NRZ); CMI at 139 Mb/s; HDB3 at 2, 8, and 34 Mb/s
• Internal clock: 139.264 MHz and 141.040 MHz crystal options
• External clock input: 1 kHz to 150 MHz (75 ohm) or 1 kHz to 170 MHz
• Offset clock tuning: ±15 ppm fixed or continuously variable to ±60 ppm
• Pattern library: PRBS (2¹⁰-1, 2¹⁵-1, 2²³-1), programmable 10- or 16-bit words, AIS, and two 1010 alternating patterns
• Jitter generation (Option 002): Configurable jittered, CMI-coded, or binary output at 139.264 Mbit/s
**Receiver Section**
• Recovered clock: 139.264 Mbit/s ±3 Mbit/s
## Key Features
• Single portable unit with HP-IB interface capability
• Selectable data formats optimized for European digital hierarchies
• Error add facilities for stress testing
• Zero substitution gating: PRBS patterns off for 1 to 999 clock periods post-trigger
• Internal printer option (availability varies by unit)
## Typical Applications
• Design and development of digital transmission equipment
• Commissioning of new transmission systems
• Maintenance and troubleshooting of operational networks
## Compatibility & Integration
HP-IB interface available for remote control and automated test sequences.
