The Keysight Agilent HP 8511A is a 45 MHz to 26.5 GHz four-channel frequency converter designed for use with the 8510C Network Analyzer. It operates as a general-purpose magnitude/phase receiver, featuring four separate RF-to-IF converters with precision 3.5 mm connectors, making it ideal for multiport device, subsystem, and antenna measurements.

Specifications

General

ParameterValue
InterfacesTest Set Interconnect, 4 x IF Output (BNC)

Physical

ParameterValue
Power Supply100 / 120 / 220 / 240 V AC ±10%, 47 to 66 Hz
Operating Temperature0 to 55 °C
Dimensions (W×H×D)425 mm × 133 mm × 508 mm
Weight15

RF Input Specifications

ParameterValue
RF Frequency Range45 MHz to 26.5 GHz
RF Input Impedance50 Ω nominal
RF Input Connector TypePrecision 3.5 mm (female)
Number of RF Channels4 separate RF-to-IF converters

Transfer & Distortion Characteristics

ParameterValue
Magnitude Slope±0.08 dB/GHz
Dynamic Range (0.045 to 8 GHz)105 dB
Dynamic Range (8 to 20 GHz)105 dB
Dynamic Range (20 to 26.5 GHz)98 dB
High Level Noise (Magnitude)0.012 dBrms / 0.02 dBrms / 0.04 dBrms (frequency dependent)
High Level Noise (Phase)0.1° rms / 0.15° rms / 0.25° rms (frequency dependent)
Low Level Noise-95 dBm / -90 dBm / -85 dBm (frequency dependent)

Control & System Integration

ParameterValue
Compatible Mainframe SystemAgilent/HP 8510C Network Analyzer
System Integration RoleFour-channel receiver/signal processor (1 channel for phase-lock, 3 channels for measurements)

Outputs

ParameterValue
IF Output Frequency20 MHz
IF Output Connectors4 x BNC (female)
Number of IF Output Channels4 (a1, a2, b1, b2)

RF Inputs

ParameterValue
Number of RF Input Ports4 (a1, a2, b1, b2)
Input Port Return Loss (0.045 to 8 GHz)> 14 dB
Input Port Return Loss (8 to 20 GHz)> 10 dB
Input Port Return Loss (20 to 26.5 GHz)> 8 dB
Maximum Safe RF Input Power+20 dBm
Maximum DC Input Voltage0 V

Rear Panel Connections

ParameterValue
LO Input Connector3.5 mm (female), rear panel
Test Set Interconnect Connector25-pin D-sub

Technology

Superheterodyne Frequency Conversion

Applications

Four-channel receiver and signal processor for network analysis