System: v1.4-192-g73fe677
While checking the output levels of the signal generator, I noticed an odd behavior at signal levels below -70 dBm.
When checked against a bench top spectrum analyzer, the signal levels were measured to be within about 0.5 dBm from -18.5 dBm to -70 dBm. However, when going from -70 dBm to -80 dBm, the output signal was only about -76 dBm. And then farther below that level the measured output levels were also generally off.
I first when down by -10 dBm steps from -50 dBm to the minimum at -115 dBm, and then went up in +10 dBm steps to -55 dBm.
Photos below.
Nelson
Seattle WA
-50 dBm output
-60 dBm output
-70 dBm output
-80 dBm output
-90 dBm output
-100 dBm output
-110 dBm output
-115 dBm output
-105 dBm output
-95 dBm output
-85 dBm output
-75 dBm output
-65 dBm output
-55 dBm output
