Vertex Standard VX-6000V User manual

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
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□RF signal generator: calibrated output level at 1000 MHz (0 dBµ =1.0 µV - terminated circuit)
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□Deviation Meter (linear detector)
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□AF Millivoltmeter
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SINAD Meter
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□Inline Wattmeter with 5% accuracy at 1000 MHz
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□Regulated DC Power Supply: adjustable from 10 to 17 VDC, 30A
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□50-ohm Non-reactive Dummy Load: 200W at 1000 MHz
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□Frequency Counter: >0.1 ppm accuracy at 1000 MHz
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□AF Signal Generator
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□DC Voltmeter: high impedance
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□RF Sampling Coupler(attenuation pad)
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□AF Dummy Load: 4 ohm, 20W
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Oscilloscope
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Spectrum Analyzer
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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)
2
Ω10W
Ground
+470uF
2
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
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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.
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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.
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Key the transmitter, and adjust trimmer-capacitor TC1017 on the Unit for 4.2 V on the voltmeter.
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□Next select to the low edge frequency channel and confirm about 1.0 V(0.8V – 1.2V) on the
voltmeter.
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□
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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)
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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.
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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
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Select band center frequency channel, and adjust the AF generator for 25mV(-30dBm) output at 1
kHz to the microphone jack.
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□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
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Select band center frequency channel, with 151.4 Hz CTCSS encode, and reduce the AF generator
injection to zero.
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□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
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□Select band center frequency channel, with DCS 023 enabled, reduce the AF generator injection to
zero.
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□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
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□ Set up the test equipment as shown for receiver alignment, and construct the audio test adapter
as described in the box below.
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□ 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.
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□Adjust by control commands for tune from the computer for optimum SINAD, reducing signal
generator output level as necessary for proper meter deflection.
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□After the previous step, final signal generator level should be less than 0.25μV for 12dB SINAD.
Squelch Threshold
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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.
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□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).