User Manual

G3L-2100-30-B/G3L-2100-30-C Operation Manual
1-4 Alarms
The WPA generates the following alarms and communicates then to the base station via the
TLIC bus:
• VSWR
• Gain
• Temperature
• Over-Drive
• Power Supply
• Linearization
The base station is able to query the current alarm status from the WPA. Fault status is cleared at
unit reset which means that any alarm detected after reset is reported to the base station. The
alarm status always represents existing conditions.
1-4.1 VSWR
The WPA supervises the output (load) VSWR and gives the alarm based on the following limits
as listed in table 1-3.
Table 1-3 VSWR Alarm Limits
VSWR Alarm Status Limits
VSWR alarm ON VSWR at the output>8.5:1 @ phase 0-360º
VSWR alarm OFF VSWR at the output<3.0:1 or when the VSWR alarm is dis-
abled @ phase 0-360º
1-4.2 Gain
The WPA supervises the gain of the unit and gives the gain alarm according to the limits listed in
table 1-4.
Table 1-4 Gain Alarm Limits
Gain Alarm Status Limits
Gain alarm ON
Gain deviates more than ±1.5 dB from specified nominal
gain or if the carrier cancellation loop is out of lock, the gain
alarm is activated
Gain alarm OFF Gain is within the specified range or disabled
1-4.3 Temperature
The WPA monitors the internal temperature. The measured temperature must represent the base
plate temperature of the main power amplifier. The alarm is given according to the limits listed in
table 1-5.
 Copyright Powerwave Technologies, Inc., March 2003. All rights reserved
044-05133 Rev. A 1-3 March 2003