NEC DTU-70, Instruction Manual

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GWP-G22996
2 - 2
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Coolant feeding is easier.
○
Air purge is easier.
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Dusts that strainers or filters cannot remove will precipitate at the bottom of the
tank and can easily be removed.
(4) Compact Size
Its compact size (up to 5 PA mounted model, cooling system is built in transmitter
rack
）
contributes to the effective use of the station building inside space.
(5) High Reliability
This transmitter series incorporates a function for monitoring the status of each
component unit to prevent major faults from occurring and assure continuation of
stable operation.
(6) Excellent Maintenance Function
Adaptive Digital Corrector (ADC) updates correction coefficients automatically and
keeps the best signal qualities of a transmitter. With the adaptive function, routine
maintenance activities are greatly reduced.
(7) Ease of Operation and user-friendly monitoring
Equipped with a character 40 x 2 display panel (or optional color LCD Display) for
visually displaying operating and trouble statuses for the operator so as to be
perceptible at a glance. Besides the “LCD Display”, the trouble displaying functions
are distributed among several units : UHF Exciter, UHF PA (Power Amplifier unit).
The TX control unit features a built-in web server and SNMP. By connecting
transmitters to a local area network, transmitters can be monitored and controlled from
a remote PC with a web browser. Monitoring and control are also possible using the
SNMP manager.
In order to improve the operational flexibility of the TV transmitter and the life
expectancy of the PA, a wide variety of circuit design improvements have been
incorporated.