The Agilent/Keysight 87421A is a DC switching power supply engineered to deliver bias voltages for Agilent and Keysight microwave system amplifiers. This compact unit supports both benchtop and system-integrated configurations, supplied with a 2-meter DC bias cable for remote amplifier placement. Maximum output power reaches 25 W across dual-rail outputs.
Technical Specifications
DC Output
• +12 V at 2.0 A
• −12 V at 200 mA
• Maximum output power: 25 W
Regulation & Performance
• Line regulation: 0.1%
• Load regulation (20% to full load): 2.0%
• Output ripple: 25 mV RMS maximum
• Output noise: 2% peak-to-peak maximum
Protection
• Overvoltage limit protection enabled
• Short-circuit protection with current limiting; normal operation resumes upon overload removal
Power Input
• AC input: 90–250 VAC, 50/60 Hz
• Fuse: 1 A slow blow
Environmental
• Operating temperature: 0° to +55° C at full load
• Storage temperature: −40° to +70° C
Physical
• Weight: 0.9 kg (2.0 lb)
• Shipping weight: 1.8 kg (4.0 lb)
– Key Features
• Dual-output topology with independent voltage regulation on positive and negative rails
• Included 2-meter DC bias cable for flexible system layouts
• AC power cord supplied
• Current-limiting protection for overload and short-circuit conditions
– Typical Applications
Microwave amplifier biasing in bench and production environments. High-speed signal conditioning with lightwave converters.
– Compatibility & Integration
Designed for amplifier models 83006A, 83017A, 83018A, 83050A, 83051A, and 87415A. Supports the 83440C high-speed lightwave converter when paired with the 83440-60009 adapter.
