FCC ID: K6610934740
IC: 511B-10934740
Alignmen
t
1/3 Vertex Standard Co., Ltd.
VX-4500 / VX-4600 Alignment
Introduction
The VX-4500 / 4600 series has been aligned at the factory
for the specified performance
across the entire frequency range specified. Realignment should therefore not be necessary
except in the event of a component failure. All component replacement and service should be
performed only by an authorized Vertex Standard representative, or the warranty policy may
be voided. The following procedures cover the sometimes critical and tedious adjustments that
are not normally required once the transceiver has left the factory. However, if damage occurs
and some parts 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. Therefore, if a fault is suspected, contact the
dealer from whom the transceiver was purchased for instructions regarding repair. Authorized
Vertex Standard service technicians realign all circuits and make complete performance
checks to ensure compliance with factory specifications after replacing any faulty components.
Those who do undertake any of the following alignments are cautioned to proceed at their own
risk. Problems caused by unauthorized attempts at realignment are not covered by the
warranty policy. Also, Vertex Standard must reserve the right to change circuits and alignment
procedures in the interest of improved performance, without notifying owners. 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 the need for realignment determined to
be absolutely necessary. The following test equipment (and thorough familiarity with its correct
use) is necessary for complete realignment. Correction of problems caused by misalignment
resulting from use of improper test equipment is not covered under the warranty policy. 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 single 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.
Required Test Equipment
■
Radio Tester with calibrated output level at 600 MHz
■
In-line Wattmeter with 5% accuracy at 600 MHz
■
50-ohm, 50-W RF Dummy Load
■
Regulated DC Power Supply (standard 13.6V DC, 15A)
■
Frequency Counter:
±
0.2 ppm accuracy at 600 MHz
■
AF Signal Generator
■
AC Voltmeter
■
DC Voltmeter
■
UHF Sampling Coupler
■
Microsoft Windows or later operating system
■
Vertex Standard VPL-1 Connection Cable and CE115
Alignment program
Alignment Preparation & Precautions
A 50-ohm RF Dummy load and in-line wattmeter must be connected to the main antenna jack
