The Agilent/Keysight 5087A is a modular distribution amplifier for high-performance frequency standard signal distribution in precision test and measurement systems. It accepts three input channels configured for 5 MHz or 10 MHz operation, with support for up to four different input frequencies, and delivers up to 12 individually adjustable output channels with voltage levels from 0 Vrms to 3 Vrms. Tuned output amplifiers ensure low distortion and excellent channel-to-channel isolation, while internal shielding minimizes noise and crosstalk across all signal paths.
Technical Specifications
Input Configuration
• Three input channels
• Accepts 5 MHz or 10 MHz input frequencies
• Supports up to four different input frequencies across three channels
Output Configuration
• Up to 12 selectable output channels
• Individual output voltage adjustment: 0 Vrms to 3 Vrms per channel
• Tuned output amplifiers with high channel-to-channel isolation
Power Supply
• AC Input: 115 or 230 Vac ±10%, 48 to 440 Hz, 20 VA maximum
• DC Input: 22–30 Vdc, 600 mA maximum
• Well-regulated internal supply with negligible effect from line voltage fluctuations
• External DC backup provision ensures operation during AC failure
Signal Integrity
• Phase stability: <0.1 ns/°C (5 and 10 MHz); <0.5 ns/°C (1 MHz); <5 ns/°C (100 kHz)
• Amplitude change due to load on other channels: <0.1 percent
• Phase change due to load on other channels: 60 dB (1 V up to 50 MHz injected on any output); >50 dB on 10 MHz output
Environmental Specifications
• Humidity: 95% relative at 40°C
• Altitude: Up to 30,000 ft
• Shock: MIL-T-21200 Class 1 and MIL-E-5400 (30 G)
• Vibration: MIL-STD-167
• EMC: MIL-STD-461A
Physical Characteristics
• Dimensions: 88 mm (H) × 425 mm (W) × 286 mm (D)
• Weight: 7 kg net; 10 kg shipping
• Front panel meter with 16-position switch for monitoring inputs, outputs, and power supply voltage
– Key Features
• Modular architecture supports custom configurations with up to 3 input and 12 output amplifiers
• Individual shielding around each amplifier module reduces noise and crosstalk
• Low distortion output with excellent isolation between channels
• Precise voltage control per output channel
• Dual power supply topology (AC/DC) with uninterrupted operation capability
















