User's Manual

PINEAPPLE TECHNOLOGY, INC.

UT X1K W-A Ope rating a nd Se rvic e Ma nua l

Page 52

VIII — ADJ USTMEN T S AND T UNIN G

Phase adjustments. This adjustment is ﬁ xed tuned for the channel of this transmitter. Adjustment

to this circuits requires the following equipment:

• HP 8508A VECTOR VOLTMETER

• BIRD THROUGH LINE WATT METER

• SPLITTER

• 2 ea. 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 Ampliﬁ er inputs

and those provided to connect the PA Ampliﬁ ers 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 ﬁ eld.