Agilent/Keysight E8257DS03

The Agilent/Keysight E8257DS03 is a millimeter-wave source module that extends PSG signal generators into the sub-terahertz domain. Operating as a frequency extender for the E8257D or E8267D (with Option 1EU), it generates high-power millimeter-wave test signals from 220 to 325 GHz. The module connects directly to the PSG via dedicated interface, drawing DC power and receiving control commands through a single connection. Output is delivered through a WR-03 waveguide flange with -25 dBm available at 325 GHz.

The E8257DS03 inherits frequency accuracy and resolution from its host PSG, ensuring phase coherence and precise tuning across the entire band. FM, PM, and pulse modulation capabilities extend complex signal generation to millimeter-wave frequencies. Operating temperature range is +20 to +30 °C. Physical dimensions are 2.8 in (7.11 cm) H × 4.3 in (10.92 cm) W × 5.7 in (14.47 cm) D, with module weight below 2.0 lb (907 g).

This product is obsolete with no identified replacement.

– Technical Specifications

• Frequency range: 220 to 325 GHz
• Output power: -25 dBm @ 325 GHz
• Output port: WR-03 flange
• Temperature operating range: +20 to +30 °C
• Dimensions: 2.8 in H × 4.3 in W × 5.7 in D (excluding waveguide)
• Weight: < 2.0 lb (907 g)

– Key Features

• Direct PSG power and control via dedicated interface eliminates external power supplies
• WR-03 waveguide output for efficient millimeter-wave coupling
• FM, PM, and pulse modulation support through the source module
• Compact form factor suitable for bench and system integration

– Typical Applications

• Radar system testing
• Satellite communications characterization
• Millimeter-wave component and device characterization
• Complex modulation format generation for RF/microwave validation

– Compatibility & Integration

Requires Keysight E8257D or E8267D PSG equipped with Option 1EU. Compatible with E8247C, E8257C, E8257D, E8267C, or E8267D synthesized sources. RF connection adapters (typically supplied with the PSG) are required to interface the PSG RF output to the source module RF input.