Pineapple Technology Inc. UTX3KW Benutzerhandbuch

 

PINEAPPLE TECHNOLOGY, INC.

 

UTX3KW-A Operating and Service Manual

Page 57

VIII — ADJUSTMENTS AND TUNING

3.  GAIN & PHASE MATCHING: Each U600LDV-2 comes with a circuit for making Gain and Phase 

adjustments. This adjustment is fixed tuned for the channel of this transmitter. Adjustment to these 

circuits require the following equipment:

 

•  HP 8508A VECTOR VOLTMETER

 

•  BIRD THRU LINE WATT METER

 

•  SPLITTER

 

•  2ea DIRECTIONAL COUPLERS

 

•  2 ea. 500 watt terminations

 

•  Component selection charts for resistors

 

•  Component selection chart for capacitors

 

Component selection charts and setup block diagram provided as needed. Recommended tuning 

should be within +/- 0.15 dB and +/- 3 degrees as measured on the HP 8508A.

D.  PHASE MATCHED CABLES: The cables used to connect the splitter to the PA Amplifier inputs 

and those provided to connect the PA Amplifiers to the combiner are phase matched. If a cable 

is damaged and needs to be replaced, additional cables are available from Pineapple Technology, 

Inc. The customer may manufacture additional cables, however the same coax type with the same 

connector types should be used. The phase matching procedure listed above may be used for 

adjusting the lengths. Matching should be within +/- 2 degrees. 

E.   ADP500/1000 WATT METER: This unit comes calibrated from the factory for the rated power 

level of the transmitter. Adjustments are not recommended in the field.