3-2
044-05xxx Rev A
Table 3-1. Status Indicator Colors and Status
Control/Indicator
Description
LED Color
MCPA Status
Green (solid)
RF enabled, Reset/On/Off switch set to On
(middle position). Operation normal.
Green (blinking)
Standby.
Yellow (solid)
Minor* alarm - APC function enabled.
Yellow Blinking
VSWR Warning.
Red (solid)
Major* alarm – Critical fault present. If
present on only one amplifier, amplifier
replacement required. If present on all
amplifiers in a sub-rack, a fault likely exists in
the sub-rack or in the RF load attached to
the sub-rack.
STATUS (Multi-colored
LED Indicator)
Red/Yellow (alternating)
Downloading. Do not interrupt power.
Toggle Switch Positions
RESET (Up)
Amplifier in RESET mode. LED indicates Boot mode, then turns solid
green.
On (Middle)
Amplifier enabled. LED indicates solid green
Off (Down)
Amplifier RF disabled. LED Indicates solid red.
* See Table 4-1 for an explanation of major and minor alarms.
3-2.3 RJ-11 PC Interface
The RJ-11 PC Interface connector located on the front panel is for updating the amplifier’s
firmware, and is for factory use only.
3-3 Initial Start-Up and Operating Procedures
To perform the initial start-up, proceed as follows:
1. Verify that all input and output cables are properly connected.
CAUTION
Before applying power, make sure that the input and output of the amplifier
are properly terminated at 50 ohms. Do not operate the amplifier without a
load attached. Refer to table 1-2 for input power requirements. Excessive
input power may damage the amplifier.
Note
The amplifiers must be warmed up for a minimum of 5 minutes prior to
setting power levels. Failure to properly warm the amplifiers may result in
lower output power, once the amplifiers reach operating temperature.
2. Turn on the supply that pr27 Vdc to the amplifier.
3. Place the power 3-position (Reset/On/Off) switch on the amplifier front panel to the On
(middle) position.
4. Allow the amplifiers to warm up for at least 5 minutes before taking power readings.
