6.4
Monitoring combining unit (MCU) adjustments
6.4.1
Procedure
Insert the 90°/stub in the SBO output of the NM3531 Cabinet.
Connect the Field Test Set to the CL output of the MCU. Check that the reading is 0% ±0.5%
DDM.
Remove the 90°-stub from the SBO path.
Connect the Field Test Set to the DS output of the MCU. Adjust the MCU attenuator at A2 to
obtain 17.5% DDM.
6.5
Location of near field antenna position
According to site data (slope, etc.,) the theoretical position of the NF antenna should be calcu-
lated.
6.5.1
Near Field Monitor Position Search
Install the NF antenna at the position according to calculations (distance and height). Adjust
the height to obtain 0 DDM reading on the Field Test Set connected to the NF monitor cable.
(Ladder and personnel must be vacated from the NF area.)
Содержание NM 7000 Series
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