Agilent/Keysight 8493A

The Agilent/Keysight 8493A is a precision coaxial fixed attenuator engineered to provide accurate signal reduction across DC to 12.4 GHz. Built for laboratory, system integration, and field deployment, it delivers flat frequency response and low VSWR to maintain signal integrity in sensitive RF and microwave circuits.

– Technical Specifications

• Frequency Range: DC to 12.4 GHz
• Attenuation Values: 3 dB, 6 dB, 10 dB, 20 dB, 30 dB
• Attenuation Accuracy:
– 3 dB: ±1.25 dB (DC–8 GHz), ±1.35 dB (8–12.4 GHz)
– 6 dB, 10 dB, 20 dB, 30 dB: ±1.2 dB (DC–8 GHz), ±1.3 dB (8–12.4 GHz)
• Maximum Input Power: 2 W average; 100 W peak
• Maximum VSWR:
– DC to 8 GHz: 1.25 (3 dB), 1.2 (6/10/20/30 dB)
– 8 to 12.4 GHz: 1.35 (3 dB), 1.3 (6/10/20/30 dB)
• Connectors: SMA male and SMA female; heat-treated beryllium copper construction
• Resistive Element: Film on attenuator card
• Testing: Swept-frequency tested across full operational range
• Calibration Data: Nameplate-mounted calibration points per unit

– Key Features

• Precise attenuation accuracy suitable for demanding measurement applications
• Low VSWR performance ensures minimal signal reflection across operating band
• Small form factor enables flexible integration into benchtop and system configurations
• Heat-treated SMA connectors provide durability for field and laboratory use
• Each unit individually swept-frequency tested to specification compliance

– Typical Applications

• Extending measurement range of sensitive power meters for higher power signals
• Impedance padding to improve system VSWR when measuring poorly matched devices
• Calibration standards for attenuation and RF substitution measurements
• Signal level reduction in sensitive RF and microwave instrumentation

– Compatibility & Integration

The 8493A accepts standard SMA connectors (male and female), enabling direct integration with laboratory instruments, test systems, and field equipment operating within the DC to 12.4 GHz band.