The HP/Agilent 84907L is a programmable step attenuator for precise RF and microwave signal level control across DC to 40 GHz. It delivers 0 to 70 dB attenuation in discrete 10 dB steps with ±0.6 dB accuracy to 26.5 GHz and ±0.9 dB to 40 GHz, making it ideal for ATE integration and complex measurement systems.
## Technical Specifications
**Frequency Range:**
• DC to 40 GHz
**Attenuation:**
• 0 to 70 dB in 10 dB steps
• Step-to-step accuracy: ±0.6 dB to 26.5 GHz; ±0.9 dB to 40 GHz
• Repeatability: Better than 0.03 dB (0.03 dB maximum over 5 million cycles per section)
**Insertion Loss (0 dB attenuation):**
• 0.6 dB + 0.03 dB/GHz
**VSWR:**
• 1.25:1 (DC to 12.4 GHz)
• 1.5:1 (12.4 to 34 GHz)
• 1.7:1 (34 to 40 GHz)
**Power Handling:**
• Maximum RF input: 1 W average; 50 W peak
**Switching Life:**
• Greater than 5 million cycles per section
**Connectors:**
• 2.4 mm female, 2.4 mm male/female, or 2.92 mm SMA-compatible options
• 10-pin programming socket
**Power Supply:**
• 24 Vdc or 5 Vdc nominal (solenoid supply)
**Physical:**
• Weight: 0.42 kg
• Compact, rugged design
## Key Features
• Low VSWR across full frequency range ensures minimal reflection effects
• Fine repeatability (better than 0.03 dB) supports precision measurement chains
• Extended switching lifetime delivers cost-effective long-term deployment
• Multiple connector options accommodate diverse integration requirements
• Low insertion loss maintains signal integrity at all attenuation states
## Typical Applications
• Automatic test equipment (ATE) signal conditioning
• RF/microwave receiver sensitivity testing
• Gain compression and dynamic range measurements
• System calibration and level reference applications
## Compatibility & Integration
Multiple connector interfaces (2.4 mm and 2.92 mm SMA-compatible) enable direct integration into test racks and benchtop systems. Dual voltage supply options (24 Vdc or 5 Vdc) simplify controller interface design. Programmable 10-pin socket supports automated attenuation sequencing in production and field environments.
