Vertex Standard VX-6000V Manuale utente

VX-6000V

VX-6000VVX-6000V

VX-6000V Alignment

AlignmentAlignment

Alignment

The VX-6000 has been carefully aligned at the factory for the specified performance across the

frequency range specified for each version.

Realignment should therefore not be necessary except in the event of a component failure, or

alteration of version. All component replacement and service should be performed only by an

authorized Yaesu 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 Yaesu 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 Yaesu 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, Yaesu 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

Required Test EquipmentRequired Test Equipment

Required Test Equipment

□

□RF signal generator: calibrated output level at 1000 MHz (0 dBµ =1.0 µV - terminated circuit)

□

□Deviation Meter (linear detector)

□

□AF Millivoltmeter

□

SINAD Meter

□

□Inline Wattmeter with 5% accuracy at 1000 MHz

□

□Regulated DC Power Supply: adjustable from 10 to 17 VDC, 30A

□

□50-ohm Non-reactive Dummy Load: 200W at 1000 MHz

□

□Frequency Counter: >0.1 ppm accuracy at 1000 MHz

□

□AF Signal Generator

□

□DC Voltmeter: high impedance

□

□RF Sampling Coupler(attenuation pad)

□

□AF Dummy Load: 4 ohm, 20W

□

Oscilloscope

□

Spectrum Analyzer

□

IBM PC/compatible computer w/Vertex CT-71 programming cable(CT-29+CT-70) and CE-35

channel programming editor.

50-

Ω RF Signal

Dummyload Generator

RFSampling

InlineWattmater Coupler

Transceiver

DeviationMeter CT-70

CT-29Connection

Frequeuncy Cable PowerSupply

Counter IBMPC 13.8VDC

COMport

Alignment Preparation & Precautions

Alignment Preparation & PrecautionsAlignment Preparation & Precautions

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 ℃(68~86F). 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 CT-71 programming cable as described

in the EEPROM Programming chapter, and download 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 mV(terminated

circuit).

Caution:

Caution:Caution:

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

φPLUG

Attenuated

TestOutput(1/2)

Ω10W

Ground

+470uF

Ω10W

AFTestAdapterSchematic

Alignment Channel Frequencies

Alignment Channel FrequenciesAlignment Channel Frequencies

Alignment Channel Frequencies

Channel Frequency

(simplex)

CTCSS

Encode

DCS

Encode

Narrow

/wide

CH1 148.01MHz None None Wide

CH2 161.01MHz None None Wide

CH3 173.99MHz None None Wide

CH4 148.01MHz None None Narrow

CH5 161.01MHz None None Narrow

CH6 173.99MHz None None Narrow

CH7 161.01MHz 151.4Hz None Wide

CH8 161.01MHz None 023 Wide

CH9 161.01MHz 151.4Hz None Narrow

CH10 161.01MHz None 023 Narrow

PLL & Transmitter

PLL & TransmitterPLL & Transmitter

PLL & Transmitter

Set up the test equipment as shown for transmitter alignment.

Maintain the supply voltage at 13.8V DC for all steps.

PLL VCV

PLL VCVPLL VCV

PLL VCV

□

Connect the positive lead of the DC voltmeter to the test point TP1013 (VCV) on the Main Unit, as

indicated in the figure, and the negative lead to chassis ground.

□

Set the transceiver to the high band edge frequency channel, then adjust trimmer-capacitor

TC1016 on the Unit for 4.2 V on the voltmeter.

□

Key the transmitter, and adjust trimmer-capacitor TC1017 on the Unit for 4.2 V on the voltmeter.

□

□Next select to the low edge frequency channel and confirm about 1.0 V(0.8V – 1.2V) on the

voltmeter.

□

□



Key the transmitter, and confirm about 1.0 V(0.8V – 1.2V) on the voltmeter.

PLL Reference Frequency

PLL Reference FrequencyPLL Reference Frequency

PLL Reference Frequency

With the wattmeter, dummy load and frequency counter connected to the antenna jack, and select

band center frequency channel, key the transmitter and adjust TC1001 on the Main Unit, if

necessary, so the counter frequency is within 100 Hz of the channel center frequency for the

transceiver version.

Transmitter Output Power (VHF)

□

Select band center frequency channel, and select high power output level.

Key the transmitter and adjust by control commands for high power from the computer for

(VHF:110 UHF:100) ± 2 Watts as indicated on the wattmeter.

□

Select band center frequency channel, and select low power output level.

Key the transmitter and adjust by control commands for low power from the computer for 50 ±1

Watts as indicated on the wattmeter.

Transmitter Deviation

Transmitter DeviationTransmitter Deviation

Transmitter Deviation

Microphone Audio Modulation Level

Microphone Audio Modulation LevelMicrophone Audio Modulation Level

Microphone Audio Modulation Level

□

Select band center frequency channel, and adjust the AF generator for 25mV(-30dBm) output at 1

kHz to the microphone jack.

□

□Key the transmitter and adjust by control commands for maximum deviation from the computer for

4.2kHz ± 0.05kHz deviation as indicated on the deviation meter.

CTCSS Modulation Level

□

Select band center frequency channel, with 151.4 Hz CTCSS encode, and reduce the AF generator

injection to zero.

□

□Key the transmitter and adjust by control commands for CTCSS deviation from the computer for

0.7kHz ± 0.05kHz deviation as indicated on the deviation meter.

DCS Modulation Level

□

□Select band center frequency channel, with DCS 023 enabled, reduce the AF generator injection to

zero.

□

□Key the transmitter and adjust by control commands for DCS deviation from the computer for 0.7

kHz ± 0.05 kHz deviation as indicated on the deviation meter.

Receiver

ReceiverReceiver

Receiver

□

Set up the test equipment as shown for receiver alignment, and construct the audio test adapter

as described in the box below.

□

With the transceiver set to band center frequency channel, and the RF signal generator tuned to

the same frequency, set the generator for ±3.0kHz deviation (for 25kHz steps) with 1kHz tone

modulation, and set the output level for 1μV at the antenna jack.

□

□Adjust by control commands for tune from the computer for optimum SINAD, reducing signal

generator output level as necessary for proper meter deflection.

□

□After the previous step, final signal generator level should be less than 0.25μV for 12dB SINAD.

Squelch Threshold

□

Select band center frequency channel, and the RF signal generator turned to the same frequency,

set the generator for ±3.0 kHz deviation with 1kHz tone modulation, and set the output level for -

8dBμat the antenna jack.

□

□Adjust the squelch threshold level by control commands for squelch threshold from the computer so

that it just closes (BUSY

BUSYBUSY

BUSY LED turns off).

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