Vertex Standard VX-6000L Manuel utilisateur
FCC ID: K66VX-6000L
Alignment
Vertex Standard Co., Ltd.
1
VX-6000L Alignment
The VX-6000L 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 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.
FCC ID: K66VX-6000L
Alignment
Vertex Standard Co., Ltd.
2
Required Test Equipment
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･RF signal generator: calibrated output level at 100 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 100 MHz
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･Regulated DC Power Supply: adjustable from 10 to 17 VDC, 30 A
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･50
ΩNon-reactive Dummy Load: 200 W at 100 MHz
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･Frequency Counter: >0.1 ppm accuracy at 100 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 Ω, 20 W
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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
InlineWattmeter Coupler
Transceiver
DeviationMeter CT-70
CT-29Connection
Frequency Cable PowerSupply
Counter IBMPC 13.6VDC
COMport
FCC ID: K66VX-6000L
Alignment
Vertex Standard Co., Ltd.
3
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 to 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 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 dBµ = 0.5 µV (terminated 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
φPLUG
Attenuated
TestOutput(1/2)
2
Ω 10 W
Ground
+ 470 µF
2
Ω 10 W
AFTestAdapterSchematic
FCC ID: K66VX-6000L
Alignment
Vertex Standard Co., Ltd.
4
Alignment Channel Frequencies
Channel Frequency
(simplex) CTCSS
Encode DCS
Encode
CH1 37.01MHz None None
CH2 43.01MHz None None
CH3 49.99MHz None None
CH4 43.01MHz 151.4Hz None
CH4 43.01MHz None 023
PLL & Transmitter
Set up the test equipment as shown for transmitter alignment.
Maintain the supply voltage at 13.6 V DC for all steps.
PLL VCV
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Connect the positive lead of the DC voltmeter to the test point TP1007 (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
L1021 on the Unit for 7.0 V on the voltmeter.
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Key the transmitter, and adjust trimmer-capacitor L1022 on the Unit for 7.0 V on the
voltmeter.
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･Next select to the low edge frequency channel and confirm about 1.8 V (1.5 V to 2.1 V) on
the voltmeter.
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Key the transmitter, and confirm about 1.8 V (1.5 V to 2.1 V) on the voltmeter.
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 LVHF
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Select band center frequency channel, and select high power output level.
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･Key the transmitter and adjust by control commands for high power from the computer for
120 ±2 Watts as indicated on the wattmeter.
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Select band center frequency channel, and select low power output level.
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･Key the transmitter and adjust by control commands for low power from the computer for
50 ±1 Watts as indicated on the wattmeter.
FCC ID: K66VX-6000L
Alignment
Vertex Standard Co., Ltd.
5
Transmitter Deviation
Microphone Audio Modulation Level
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Select band center frequency channel, and adjust the AF generator for 25 mV(-30 dBm)
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 4.2 KHz ±0.1 KHz 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 0.7 KHz ±0.05 KHz 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
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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 ±3.0 KHz deviation with 1 KHz tone
modulation, and set the output level for 1 µV 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 0.25 µV 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 1 KHz tone modulation, and set
the output level for -8 dBµ at the antenna jack.
Adjust the squelch threshold level by control commands for squelch threshold from the
computer so that it just closes (BUSY LED turns off).
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3
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