Nautel NV7.5, Operation And Maintenance Manual

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NV10/NV7.5 Operations and Maintenance Manual Operating the transmitter
Page 2-76 Issue 3.4 2016-08-03
Figure 2.49: Factory Settings - IPA Bias Balance
Note:
The IPA Bias Balance function targets the lowest possible total transmitter reject
power. However, there is no guarantee that it will achieve less than a specific
amount. Variables such as RF module output power and phase differences result in
system reject power that can sometimes not be compensated for with this function.
Note:
The Reject Power Percentage meter is only available in this functional menu. The
green/amber/red colours are simply to provide user feedback as to the progress of
the function. If the transmitter is operating normally, without fault, and the total
reject power percentage falls within the amber or red "post" an IPA bias balance
routine, there is nothing to be concerned with, the function is simply not able to
completely compensate for the reject power (phase/amplitude differences).
IPA Bias DAC 1 = Module 1
IPA Bias DAC 2 = Module 2