GV60 TROUBLESHOOTING MANUAL
RESPONDING TO ALARMS
VERSION 1.0 2018-01-01
PAGE 4.1.13
Controller: High
Forward Power (High
Fwd Power)
Output Network
(amber)
This alarm occurs if the transmitter’s average forward power exceeds the
high forward power threshold [1.036 times the maximum power setting for
all modes; e.g., 68,376 W for FM mode]. This alarm occurs only if the
controller ALC cannot respond fast enough to transmitter load changes.
Suspect the module control/interface PWB (A3).
Controller: High
Reflected Summary
Output Network
(amber)
Not displayed in AUI or UI status. Configurable as a remote output.This
alarms occurs if there are alarms present that are related to high reflected
power on the transmitter’s RF output. Check for specific reflected power
related alarms and troubleshoot accordingly.
Controller: High
Reject Power (High
Reject)
Output Network
(amber)
This alarm occurs if any of the transmitter’s reject loads’ average power
exceeds the high reject power threshold (1200 W). Typically, high reject
power is a result of RF power module failure or removal, or PA power supply
failure or removal.
Controller: High RF
Drive
Exciter (red)
This alarm occurs if the RF drive power from the exciter is greater than the
high threshold (45% above the setpoint). This may be the result of a
calibration problem with either the exciter or the transmitter RF drive
sample. Check all connections to the exciter.
Controller: High SWR Output Network
(amber)
This alarm occurs if the transmitter's average reflected power exceeds the
high SWR threshold (1680 W). The GV60 takes no action on this alarm.
Inspect the antenna and transmission line system for damage or de-tuning.
Controller: High SWR
Shutdown
Output Network (red) This alarm occurs if the transmitter tries to reduce the forward power below
a level that is equivalent to a 3:1 VSWR (user-configurable) at the SWR
Foldback threshold due to a gradually degrading load match. This alarm
causes the transmitter to latch off. Inspect the antenna and transmission
line system for damage or de-tuning.
Controller: High
Temperature
Summary
-
Not displayed in AUI or UI status. Configurable as a remote output.This
alarms occurs if there are high temperature related alarms occurring. Check
for specific temperature related alarms and troubleshoot accordingly.
Controller: Host
Network Down
Exciter (amber)
This alarm indicates that the microcontroller that runs the remote
interfacing applications is unable to acquire an IP address. When this alarm
is present, it will not be possible to access any of the remote AUI
functionality. Check that the Ethernet cable is properly connected to A1J8A
(LAN) on the rear of the transmitter. If the alarm is still present see
“Network Setup” on page 3.2.146
of the Operations and
Maintenance Manuals for information on setting up the network
connection. Disable the alarm by setting DHCP to OFF and setting the IP
Address to all zeroes (i.e. 0.0.0.0).
Device and
Alarm Name
(AUI, UI)
Controller Front
Panel LED (color)
Description and Troubleshooting Action
Summary of Contents for GV60
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Page 463: ...VERSION 1 0 2018 01 01 MD 17 Figure MD 17 NAPA31C Power Amplifier PWB Q1 ...
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