Nautel XR6, Operation And Maintenance Manual

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XR6/XR3 Operations and Maintenance Manual Description
Page 1-6 Issue 3.1 2013-03-14
Control/monitor stage
See electrical schematics
SD-1
and
SD-5
through
SD-8
.
The control/monitor stage monitors critical signal samples and status/alarm signals from the exciter
stage, RF power stage, and ac/dc power stage. For example, RF power monitoring and RF power
stage status information is applied to the control/monitor stage. Based on the value and status of
each input, the control/monitor stage produces the appropriate control signals for the exciter stage
and the RF power stage to ensure the proper operation and protection of the transmitter.
Figure 1.3: Control/Monitor Stage
From RF Power Stage
From Ac/Dc Power Stage
LCD
(GUI)
Analog
Meter
To RF Power Stage
To Ac/Dc Power Stage Control/Display
PWB
Front
Panel
Overlay
To Exciter Stage
From Exciter Stage