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HP 84125A Microwave EMI Measurement System, 1 to 18 GHz | |
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![[ Specifications ]](../Graphics/tab-specs.gif)
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To help electronic equipment manufacturers save time by eliminating the need to piece together and characterize components required for testing electromagnetic interference (EMI) at microwave frequencies, Hewlett-Packard has produced the industry's first fully configured and characterized system for accurately measuring EMI in the 1 GHz to 18 GHz range from intentional and unintentional radiators.
The HP 84125A is fully integrated and calibrated for testing products to rigorous U.S. Federal Communications Commission (FCC) regulations and proposed European EMI standards above 1 GHz. Microwave EMI regulations affect a wide range of wireless networks products including cordless telephones, pagers, security monitors, spread spectrum transceivers, computers, and Fibre Channel LAN products. Electronic device manufacturers, EMC test laboratories and regulatory authorities will find this system a valuable addition to existing EMI test capabilities.
The HP 84125A microwave EMI measurement system has the frequency range
and sensitivity to meet your needs today and in the future. The system
includes an EMC analyzer or spectrum analyzer, antennas, amplifiers,
and a set of high-pass filters that prevent overload by reducing the
level of the fundamental at the analyzer input. The cart-mounted
equipment is connected to a microwave test set with a three-meter
harness containing low-loss cable to maximize system sensitivity. The
functionality of the HP 8593EM analyzer and the microwave test set is
combined using a system downloadable program (DLP). The system DLP
provides softkeys on the analyzer display that allow easy setup of
measurement parameters. The displayed data is corrected for antenna,
cable and filter losses, and amplifier gains, allowing direct viewing
of emission field strengths (in dBµV/m).
Test System Specifications:
Frequency Range: 1 to 18 GHz Displayed Average Noise Level Specified: 8 dBµV1 Typical: -1 dBµV1 Third Order Intercept (characteristic): >45 dBµV Test Set Specifications (amplifier, filter and cable assembly): Calibration Data Uncertainty: ±0.9 dB Flatness Uncertainty: ±1.7 dB typical Test Set Repeatability: ±0.7 dB2 typical Maximum Temperature Drift: ±1.5 dB3 typical Input VSWR 1 to 18 GHz: 3.2:1 typical 1Specified noise levels are worst-case over respective frequency ranges and are measured in a 1 MHz bandwidth. 2Test set repeatability includes cable flexure, amplifier aging and connector repeatability. 3System specifications apply between the ambient temperatures of 20°C to 30°C.
Test System Antenna and Filter Specifications:
Horn Antenna Specifications: Frequency Range: 1 to 18 GHz Antenna Factor Range (typical):4 24 to 47 dB/m Uncertainty: ±2 dB VSWR (typical): 2.8:1 4Antenna factors are specified at a one-meter distance. Filter Specifications Frequency Passband 60 dB Passband Range (GHz) Rejection VSWR (GHz) (GHz) (Typical) 1 to 18 1.5 to 18 <=0.95 2.1:1 1 to 18 3.52 to 18 <=2.5 2.1:1 1 to 18 8.2 to 18 <=5.9 2.3:1
HP 84125A Microwave EMI Measurement System, 1 to 18 GHz
Opt E10 This option allows customers to use their own HP 8593EM
in an HP 84125A microwave EMI system. The order must include
the serial number of the customer furnished HP 8593EM.
For more information, contact your local Hewlett-Packard
sales representative.
HP 84125 Series Microwave EMI Measurement System, Product Overview
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Page Updated: Thursday June 19 16:16:43 UTC 1997