3
rd
Generation Rack-
Mount RDMS™
120
Quasonix, Inc.
•
A value of zero indicates no input signal
•
A value above zero indicates how strong the signal is above no input
•
“*** dBm” displayed (
Figure 202) indicates AGC is not zeroed and the value is invalid
•
S
mall “r” displayed next to the
Signal label indicates AGC Zero Relative was selected
Figure 202: Signal Graph and Signal Indicators Windows, Zero AGC Signal
Display “Relative”
The Data Quality Metric (Q) graph displays to the right of the Signal Strength graph. The DQM range is 0 to 10,
with 10 being the best possible quality.
Note:
The integrated Quasonix demodulator can detect and establish signal lock at very low signal levels. Therefore,
it is not uncommon to see a red signal strength bar indicator accompanied with a green signal lock indicator.
4.5.2.2
Spectrum Graph
Each channel display provides a real-time power spectral density (PSD) plot as it might display on a spectrum
analyzer. An example is shown in Figure 203.
