Automatic shut down, Measurement and monitoring of rf power, Measurement and monitoring of rf power 1 – Bird Technologies DA40 UHF Series-Manual User Manual
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Operating Instructions
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Automatic Shut Down
When operations are completed, turn the RF power to the load off. The
load fans will stay on until the load is cool, then they will shut off.
Measurement and Monitoring of RF Power
The Digital Air Series load may be used in conjunction with any of the
Bird rigid coaxial line power meters. When fitted with the appropriate line
section and wattmeter, the combination is a useful tool for tuning and
adjusting a transmitter as well as monitoring RF power directly in watts.
Broadcasters involved in the transmission of high definition televi-
sion, digital audio broadcast, or other signals with complex modula-
tion should use Bird Broadcast Power Monitors (BPM) for the
measurement of true average power in these systems. BPMs are also
required in applications where multiple carriers are present in the
transmission system simultaneously, as in the case of post combiner
power measurements. Conventional broadcast power meters will pro-
duce erroneous readings in the presence of complex modulation due to
the high peak to average power ratio of these signals. Contact a Bird
sales representative for more information.