Vertex Standard VX-6R/E, Техническое дополнение

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12
Alignment
Internal System Alignment Routine
This uses a programmed routine in the transceiver
which simplifies many previously complex discrete com-
ponent settings and adjustments with digitally-controlled
settings via front panel buttons and LCD indications.
To begin, set the transceiver to the center of the 144
MHz, 220 MHz and 430 MHz bands. Next, select the 430
MHz band, then turn the transceiver off.
Now, press and hold the
[
BAND
]
,
[ ]
and
[
0
]
buttons
(at the same time) while powering the radio on again. The
display will show the first setting.
Note: that the first few settings are not adjustable and are
left as set from the factory.
In the alignment process, each adjustment is selected
by rotating the DIAL . Alignment is performed by:
❍
Pressing the
[
V/M
]
button;
❍
Injecting a signal of the required frequency and level;
then
❍
Pressing the
[
V/M
]
button after a level setting or adjust-
ment is made. This second pressing of the
[
V/M
]
button
stores the entry.
To exit the alignment routine, press the
[
HOME
]
but-
ton. After performing the system alignment in its entire-
ty, individual settings can be returned to and adjust should
the need arise
In the section to follow, typical default values (as set
at the factory) are shown in brackets (e.g. [119]), to serve
as a general guideline. As each transceiver is individual-
ly optimized at the factory, the precise settings for the
transceiver on your bench may be slightly different.
PLL Reference Frequency (REF)
Press the
[
V/M
]
button, then transmit and adjust the
counter frequency to 440.000 (±300 Hz) by rotating the
DIAL , then press the
[
V/M
]
button. Rotate the DIAL to se-
lect the next setting.
430 MHz band Alignment
Squelch Preset Threshold (
THL
) [
167
]
❍
Press the
[
V/M
]
button, then inject a –12.0 dBµ RF signal
(1 kHz tone @ ±3.5 kHz deviation), then rotate the DIAL
for minimum squelch hysteresis, then press the
[
V/M
]
button. Rotate the DIAL to select the next setting.
Squelch Preset Tight (
TLG
) [
136
]
❍
Press the
[
V/M
]
button, then adjust the generator level
to –4.0 dBµ, then press the
[
V/M
]
button. Rotate the DIAL
to select the next setting.
S-Meter S-1 Adjustment ( S1 ) [ 27 ]
❍
Press the
[
V/M
]
button, then adjust the generator level
to –8.0 dBµ (1 kHz tone @ ±3.5 kHz deviation), then
press the
[
V/M
]
button. Rotate the DIAL to select the next
setting.
S-Meter Full-Scale Adjustment ( S9 ) [ 66 ]
❍
Press the
[
V/M
]
button, then adjust the generator level
to +20 dBµ (1 kHz tone @ ±3.5 kHz deviation), then press
the
[
V/M
]
button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter S-1 Adjustment (
S1
) [
53
]
❍
Press the
[
V/M
]
button, then adjust the generator level
to 0 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the
[
V/M
]
button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter Full-Scale Adjustment (
S9
) [
77
]
❍
Press the
[
V/M
]
button, then adjust the generator level
to +20 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the
[
V/M
]
button. Rotate the DIAL to select the next set-
ting.
High TX Power Adjustment (
HP
) [
220
]
❍
Press the
[
V/M
]
button, then transmit, and adjust the
output power level for 5.0 W ±0.3 W by rotating the
DIAL , then press the
[
V/M
]
button. Rotate the DIAL to
select the next setting.
LOW3 Tx Power Adjustment (
LP3
) [
166
]
❍
Press the
[
V/M
]
button, then transmit, and adjust the
output power level for 2.5 W ±0.2 W by rotating the
DIAL
, then press the
[
V/M
]
button. Rotate the
DIAL
to
select the next setting.
L2 Tx Power Adjustment (
LP2
) [
125
]
❍
Press the
[
V/M
]
button, then transmit, and adjust the
output power level for 1.0 W ±0.1 W by rotating the
DIAL , then press the
[
V/M
]
button. Rotate the DIAL to
select the next setting.
L1 Tx Power Adjustment (
LP1
) [
95
]
❍
Press the
[
V/M
]
button, then transmit, and adjust the
output power level for 0.3 W ±0.1 W by rotating the
DIAL , then press the
[
V/M
]
button. Rotate the DIAL to
select the next setting.