Nautel NX50, Troubleshooting Manual, Page: 55 / 205

NX50 Troubleshooting Manual Responding to alarms
Issue 6.0 2019-04-01 Page 1-45
RF Power Module faults
There are many alarms on the AUI, prefixed by the text
Module
, that indicate faults related to
one or more of the 20 RF power modules in a cabinet. The number that appears after Module
or PM, identifies the serial identification of the affected RF power module. These serial
numbers are labeled on the front panel of each RF power module.
1. Check the forward power reading on the AUI. If it is less than the preset level, one or
more RF power modules are defective. Proceed to “RF power module fault
validation” .
2. If the forward power reading in Step 1 is normal press the
Status
button on the AUI to
check for other alarms that may have triggered the RF power module alarm.
3. From the AUI’s
Meter List View
page (see Figure 1.2 ), click the i (information) button
next to the Modules - Rack 1 folder in the Transmitter Layout section to view the
status screen for all RF power modules (see Figure 1.3 on page 1-46 ) or click the left-
hand drop down arrow to expand the Modules folder to allow clicking on the i button
for an individual Module (PM) (see Figure 1.4 on page 1-46 ). These screens display
critical parameters for RF power modules. As an aid in troubleshooting, compare
parameters to isolate possible module faults.
Figure 1.2: Meter List View Page
1. Click here to open the
Meter List View page
2. Click here to open the
Module status screen
3. Click here to expand
folder to allow viewing
of each Module’s
status screen