CNG-70/140 Carrier to Noise Generator

CNG-70/140 Carrier to Noise Generator
The CNG-70/140 is a fully automated test instrument that sets
and maintains a highly accurate ratio between a user-supplied
carrier and internally generated White Guassian noise.
The instrument operates over a wide range of power levels.
The modular design provides one or two totally independent
channels covering 50 to 180 MHz. The instrument utilizes dBm's
proprietary microprocessor controlled attenuator with 0.015 dB
resolution, so resolution uncertainty is less than 0.008 dB.
Typical attenuator error is less than 0.02 dB over its entire
frequency range and attenuation range.
The CNG corrects for noise density and signal level variations
over frequency, and integrates the actual noise power over the
user defined signal bandwidth. The carrier signal path is never
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