Vertex Standard VXR-9000U-A User manual

FCC ID: K6610444140
IC ID: 511B-10444140
Alignment
1/5
Vertex Standard Co., Ltd.
VXR-9000U-A Alignment
The VXR-9000U 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 STANDSRD 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: K6610444140
IC ID: 511B-10444140
Alignment
2/5
Vertex Standard Co., Ltd.
Required Test Equipment
RF signal generator: calibrated output level at 1000 MHz (0 dBµ =1.0 µV - closed 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, 15A
50 ΩNon-reactive Dummy Load: 100W 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 Ω, 20W
Oscilloscope
Spectrum Analyzer
IBM PC/compatible computer w/ VERTEX STANDARD VPL-1 programming cable and CE-49 channel
programming editor.
50-ΩRF Signal
Dummy load Generator
Inline RFSampling
Wattmater Coupler Transmitter
DeviationMeter VPL-1
Frequeuncy IBM PC Power Supply
Counter COM Port 13.6V DC

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.
3.5φPLUG
Attenuated
TestOutput(1/2)
2Ω10 W
Ground
+ 470 µF
2Ω10 W
AF Test Adapter Schematic

FCC ID: K6610444140
IC ID: 511B-10444140
Alignment
4/5
Vertex Standard Co., Ltd.
Alignment Channel Frequencies
Channel Frequency
(simplex)
CTCSS
Encode
DCS
Encode
Narrow
/wide
CH1 400.00MHz None None Wide
CH2 407.50MHz None None Wide
CH3 415.00MHz None None Wide
CH4 422.50MHz None None Wide
CH5 430.00MHz None None Wide
CH6 400.00MHz None None Narrow
CH7 407.50MHz None None Narrow
CH8 415.00MHz None None Narrow
CH9 422.50MHz None None Narrow
CH10 430.00MHz None None Narrow
CH11 415.00MHz 151.4Hz None Wide
CH12 415.00MHz None 023 Wide
CH13 415.00MHz 151.4Hz None Narrow
CH14 415.00MHz None 023 Narrow
PLL & Transmitter
Set up the test equipment as shown for transmitter alignment.
Maintain the supply voltage at 13.8 V DC for all steps.
PLL VCV
Connect the positive lead of the DC voltmeter to the test point TP1001 (VCV) on the Main Unit, as
indicated in the figure, and the negative lead to chassis ground.
Key the transmitter, and adjust coil L1020 on the Unit for 1.5 V on the voltmeter.
Next select to the band center (low edge) frequency channel (CH2) and confirm about 6.8 V (6.5V –
7.2V) on the voltmeter.
Next select to the high band frequency channel (CH4) and confirm about 6.8 V (6.5V – 7.2V) on the
voltmeter.
Key the transmitter, and confirm about 6.8 V (6.5 V – 7.2 V) on the voltmeter.
Transmitter Output Power
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 50 ± 1 W 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 10 ± 0.1 W
as indicated on the wattmeter.

FCC ID: K6610444140
IC ID: 511B-10444140
Alignment
5/5
Vertex Standard Co., Ltd.
Transmitter Deviation
Microphone Audio Modulation Level
Select band center frequency channel, and adjust the AF generator for 50 mV (-30 dBm) output at 1
kHz to the microphone jack.
Key the transmitter and adjust by control commands for maximum deviation from the computer for 4.2
kHz ± 0.05 kHz 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 0.7
kHz ± 0.05 kHz 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
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 ±3.0 kHz deviation (for 25 kHz steps) with 1kHz tone
modulation, and set the output level for 1 µV 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 0.25 µV for 12 dB 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 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).