Vertex Standard VXR-9000U-A, Alignment Manual

FCC ID: K6610444140 

IC ID: 511B-10444140 

Alignment 

3/5 

Vertex Standard Co., Ltd.

Alignment Preparation & Precautions

A dummy load and inline wattmeter must be connected to the main antenna jack in all procedures that 

call for transmission, except where specified otherwise. Correct alignment is not possible with an 

antenna. After completing one step, read the following step to determine whether the same test 

equipment will be required. If not, remove the test equipment (except dummy load and wattmeter, if 

connected) before proceeding. 

Correct alignment requires that the ambient temperature be the same as that of the transceiver and 

test equipment, and that this temperature be held constant between 20 and 30 °C (68 and 86 °F). 

When the transceiver is brought into the shop from hot or cold air it should be allowed some time for 

thermal equalization with the environment before alignment. If possible, alignments should be made 

with oscillator shields and circuit boards firmly affixed in place. Also, the test equipment must be 

thoroughly warmed up before beginning. 

Before beginning, connect the transceiver and PC using the VPL-1 programming cable as described in 

the EEPROM Programming chapter, and downloads the EEPROM data from the transceiver to the 

computer. 

Store this data in a disk file so that it can be saved and retrieved later. Using the table below, program 

the channel, CTCSS, and DCS alignment settings for your transceiver version. Upload this file to the 

transceiver. 

Note: Signal levels in dB referred to in this procedure are based on 0 dBm = 0.5 µV (closed circuit). 

Caution: 

Do not connect this line to ground, and be certain that the speaker has adequate 

capability to handle the audio output from the radio. 

Because of the bridge audio amplifier circuit used in the radio, it is necessary to construct and 

use a simple audio load test adapter as shown in the schematic diagram above, when conducting 

receiver alignment steps.

3.5

φ

 PLUG 

                      Attenuated 

                                                                          Test Output (1/2) 

                                                      2 

Ω



10 W 

                                                                          Ground 

                             + 470 µF 

                                                    2 

Ω

 10 W 

        AF Test Adapter Schematic