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8594E poor sensisity

Question asked by fcruzeiro on Jan 21, 2016
Latest reply on Feb 3, 2016 by dhamilton
Measuring a CAL OUT  it reads only -34dBm instead of -20,  looking the spectrum it appears with two other peaks 9.6MHz distant, like a AM modulation. 

Looking for a loose connection I realize that cable 5106 ,from 321.4 filter to third converter, is very sensitive. When  I disconnect and connect again the cable from filter output all measurements, CONFIDENCE TEST and calibration are good but if I cycle the power of 8594 the problem is present again.

There are no mis-connection , I tried several times and this phenomena is persistent, and more strange is if I disconnect the cable from the board (3rd conv), or from filter input nothing happens and the error remains until disconnect and connect again the cable from filter output.

If anybody can help me I will be very gratefull .  

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