Vertex Standard VXA-150 Introduction

The VXA-150 is carefully aligned at the factory for the specified performance across
the Aircraft and Weather bands. Realignment should therefore not be necessary except
in the event of a component failure.
The following procedures cover the adjustments that are not normally required once
the transceiver has left the factory. However, if damage occurs and some parts
subsequently are replaced, realignment may be required. If a sudden problem occurs
during normal operation, it is likely due to component failure; realignment should not
be done until after the faulty component has been replaced.
We recommend that servicing be performed only by authorized Vertex Standard
service technicians who are experienced with the circuitry and fully equipped for
repair and alignment. If a fault is suspected, contact the dealer from whom the
transceiver was purchased for instructions regarding repair. Under no circumstances
should any alignment be attempted unless the normal function and operation of the
transceiver are clearly understood, the cause of the malfunction has been clearly
pinpointed and any faulty components replaced, and realignment determined to be
absolutely necessary. Problems caused by unauthorized attempts at realignment are
not covered by the warranty policy
Vertex Standard reserves the right to change circuits and alignment procedures, in the
interest of improved performance, without notifying owners.
The following test equipment (and familiarity with its use) is necessary for complete
realignment. While most steps do not require all of the equipment listed, the
interactions of some adjustments may require that more complex adjustments be
performed afterwards. Do not attempt to perform only a signal step unless it is clearly
isolated electrically from all other steps. Have all test equipment ready before
beginning, and follow all of the steps in a section in the order presented.
Correction of problems caused by misalignment resulting from use of improper test
equipment is not covered under the warranty policy.
Note: Signal levels in dB refereed to in this procedure are based on 0 dBµ = 0.5 µV
(closed circuit).
Introduction Introduction
Introduction Introduction
1
VXA-150
Alignment
Vertex Standard Co., Ltd.