Temperature Test
Check the transmitter temperature (see Monitoring > Radio ‘Transmitter Current Temperature’ on
page 318). The normal operating range is 0 to 70 °C.
Connections
Check that all connections including earthing, interfaces and RF connectors are secure.
Antenna and Feeder System
Check the VSWR and compare the measurement to the commissioning values (see Monitoring > Radio
‘Transmitter Last TX Packet VSWR’ on page 318). This value will be dependent on the feeder and antenna
performance, a value of <1.5:1 shows acceptable performance.
Check the reverse power and compare the measurement to the commissioning values (see Monitoring >
Radio ‘Transmitter Last TX Packet Reverse Power’ on page 318). The value will be dependent on the
impedance presented to that antenna port of the radio by the feeder and antenna system. A reflected power
of 15 dB below the transmit power shows an acceptable performance.
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