The HP 3708A Noise and
Interference 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
signals 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 signal to be mixed with the
radio IF carrier
along with/instead of the injected noise. Additional capability
provided within the
instrument includes
