Broadcast Electronics AM-2.5E, User Manual

Page: 91 / 320

5-6
WARNING: DISCONNECT POWER PRIOR TO SERVICING
TABLE 5-1. AM-2.5E/AM-5E INDICATORS
(Sheet 2 of 4)
ASSEMBLY INDICATOR FUNCTION
ANTENNA VSWR GREEN DISPLAY - Indicates a normal antenna load.
YELLOW DISPLAY - Indicates a VSWR condition of
1.2:1.
RED Display - Indicates a high reflected/forward
power condition. In the AM-2.5E, indicates a 100 watt
reflected power condition or a condition which results
in a high forward power indication of greater than 20%.
In the AM-5E, indicates a 200 watt reflected power
condition or a condition which results in a high forward
power indication of greater than 20%.
FLASHING RED Display - Indicates a reflected power
emergency condition. In the AM-2.5E, indicates a 500
watt reflected power condition. In the AM-5E,
indicates a 1000 watt reflected power condition.
REMOTE Illuminates to indicate transmitter remote control
operations are enabled. Extinguishes to indicate
transmitter remote control operations are disabled:
1) using the remote/local switch on the controller
circuit board or 2) due to a fault in the remote control
unit.
CONFLICT Illuminates to indicate an incorrect power level is
selected for operation into the antenna connected to the
transmitter.
LIGHTNING
In the AM-2.5E, Illuminates to indicate a 1500 volt
or greater potential is present at the transmitter
output. In the AM-5E, illuminates to indicate a 2100
volt or greater potential is present at the transmitter
output.
INTERLOCK Illuminates to indicate all internal and external
interlocks are closed.
FOLDBACK Illuminates to indicate when the transmitter is in a
foldback condition. Foldback is when the transmitter
output power is automatically reduced in response to
one of the following fault conditions: 1) high reflected
power, 2) high forward power, 3) high temperature, or
4) detection of a lightning potential.
OVERTEMP Illuminates to indicate when the transmitter operating
temperature exceeds 70
°
C (158
°
F).
RESET Illuminates to indicate one or more of the following
transmitter faults have occurred: 1) over-temperature,
2) exciter fault, 3) power supply fault, 4) RF power
module fault, 5) high reflected power, 6) reflected power
emergency, or 7) lightning. Once the fault condition is
removed, the fault circuitry must be reset.