@**優價給力!HP3708A/HP8757A/HP8758A
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HP3708A信號發分析儀
The HP 3708A Noise and Interface Test Set offers an accurate, yet simple, method of simulating microwave radio fade conditions. Designed for operation in the IF section of a digital or FM microwave radio, with addition of calibrated levels of white noise and/or interference **s to the radio IF carrier. A built-in power meter and microprocessor control enables the radio IF carrier power to be sampled at the point of noise injection and the noise density adjusted automatically to maintain a constant carrier level variations. A simple, yet powerful interference test facility is also included, allowing an external broadband ** to be mixed with the radio IF carrier along with/instead of the injected noise. Additional capability provided within the instrument includes