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Voltage Standing Wave Ratio (VSWR)
This alarm is triggered when the return loss of the Downlink antenna or cable
connection exceeds 6 dB (VSWR 3:1).
The VSWR module measures the voltage standing wave ratio of the Downlink output
antenna port. If the VSWR falls below 13 dB, an alarm is triggered.
This alarm provides an indication of the status of the cable connected to the antenna. If
a cable is defective, the VSWR is decreased and the alarm is triggered again. The alarm
can be forwarded to the RMT so that faults and irregularities can be recognized and
eliminated rapidly.
Measurements
Temperature Measurements: Measures ambient temperature of the repeater chassis.
A temperature sensor is placed on the heat sink and provides analog voltage to the
Control Box. The controller processes the input with a formula and provides the
measured temperature.
Downlink Forward Power Measurements: Measures the output power of the
Downlink. (If the output power is less than 30 dBm, 30 dBm is displayed.) This module
measures the composite output power in the downlink output path of the repeater.
If the output power falls below a certain level, an alarm is triggered. You can set the
power level and the mask for the alarm. (See the RMT User Guide for more
information.) This feature provides you with the output power of the repeater and
thereby achieves optimum output power.
The alarm can be forwarded to RMT by burst or polling, so that faults can be
recognized and eliminated rapidly.
Dekolink™—IDEN Repeater Hardware Manual
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