The maximum noise level (input open) referred to the input of the remote amplifier is З p V rms, and the minimum (input shorted) is 1. 6 pV rms. This means that to ensure a signal — to-noise ratio of 10 to 1 mean square, the input signal should be about 10 p V rms. In experiments with 2000 picofarads of detector and cable capacity attached to the input, the noise level is about 2. 2 p V rms.

7.3 RANGE

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The MMSVM was designed to monitor flux over the six-decade range of 10 to 10 nv (in-core detector). Assuming a linear chamber, the electronics are capable of ±5 percent linearity operating over 6. 5 decades.