Vertex Standard VX-6000 Alignment Manual page 2

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: Do not connect this line to ground, and be Caution: Caution: Caution:
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
receiver alignment steps.
3.5 φ PLUG
Attenuated
Output(1/2)
AF Test Adapter Schematic
Alignment Channel Frequencies Alignment Channel Frequencies
Alignment Channel Frequencies Alignment Channel Frequencies
VHF TYPE C
Channel Frequency
(simplex)
CH1 148.01MHz
CH2 161.01MHz
CH3 173.99MHz
CH4 148.01MHz
above, when conducting
Test
2 Ω 10W
Ground
+ 470uF
2 Ω 10W
CTCSS DCS Narrow
Encode Encode /wide
None None Wide
None None Wide
None None Wide
None None Narrow
CH5 161.01MHz
CH6 173.99MHz
CH7 161.01MHz
CH8 161.01MHz
CH9 161.01MHz
CH10 161.01MHz
UHF TYPE D
Channel Frequency
(simplex)
CH1 450.01MHz
CH2 465.01MHz
CH3 479.99MHz
CH4 450.01MHz
CH5 465.01MHz
CH6 479.99MHz
CH7 465.01MHz
CH8 465.01MHz
CH9 465.01MHz
CH10 465.01MHz
PLL & Transmitter PLL & Transmitter
PLL & 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 VCV PLL 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-capaciter on the Unit for
4.2 V on the voltmeter.
VHF: TC1016 / UHF: TC1002
□ □
Key the transmitter, and adjust trimmer-capacitor
□
on the Unit for 4.2 V on the voltmeter.
VHF: TC1017 / UHF: TC1003
□ □
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 Frequency
PLL 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
None None Narrow
None None Narrow
151.4Hz None Wide
None 023 Wide
151.4Hz None Narrow
None 023 Narrow
CTCSS DCS Narrow
Encode Encode /wide
None None Wide
None None Wide
None None Wide
None None Narrow
None None Narrow
None None Narrow
151.4Hz None Wide
None 023 Wide
151.4Hz None Narrow
None 023 Narrow