Vertex Standard Spirit VXA-700, Руководство по обслуживанию, Страница: 14 / 40

14
Alignment
Tx FM Deviation Adjustment
r
Connect the Radio Tester to the antenna jack, then
adjust the AF generator output level for injection of
200 mV rms @ 1 kHz to the
MIC
jack.
r
Set the transceiver to 146.000 MHz and turn the trans-
ceiver off.
r
Press and hold in the
PTT
switch,
MONITOR
switch,
and key while turning the transceiver on to enter
the alignment mode.
r
Rotate the
DIAL
selector knob to select “
FM MAX DEV
xxx
.”
r
Press the
PTT
switch, and confirm that the maximum
deviation is ±4.2 to ±4.5 kHz.
r
If not:
1. Press the key momentarily;
2. Rotate the DIAL selector knob clockwise (increases the
deviation) or counter-clockwise (decreases the devia-
tion);
3. Press and hold the key for 1/2 second;
4. Confirm the deviation level.
r
Repeat above steps 1 - 4, as necessary, until you achieve
the specified deviation of ±4.2 to ±4.5 kHz.
r
Turn the transceiver off.
CTCSS Deviation Adjustment
r
Connect the Radio Tester to the antenna jack, then set
the transceiver to 146.000 MHz and turn the transceiver
off.
r
Press and hold in the
PTT
switch,
MONITOR
switch,
and key while turning the transceiver on to enter
the alignment mode.
r
Rotate the
DIAL
selector knob to select “
CTCSS DEV
xxx
.”
r
Press the
PTT
switch, and confirm that the maximum
deviation is ±0.5 to ±0.7 kHz.
r
If not:
1. Press the key momentarily;
2. Rotate the DIAL selector knob clockwise (increases the
deviation) or counter-clockwise (decreases the devia-
tion);
3. Press and hold the key for 1/2 second;
4. Confirm the modulation level.
r
Repeat steps 1 - 4, as necessary, until you achieve the
desired deviation of ±0.5 to ±0.7 kHz.
r
Turn the transceiver off.
Receiver Section
AM & Narrow FM Squelch Hysteresis Adjustment
r
Press and hold in the
PTT
switch,
MONITOR
switch,
and key while turning the transceiver on to enter
the alignment mode.
r
Rotate the
DIAL
selector knob to select “
AM
/
FM HITS
xxx
.”
r
Press the key momentarily, then adjust the hys-
teresis level using the
DIAL
selector knob (default:
001
).
r
Turn the transceiver off.
Wide FM Squelch Hysteresis Adjustment
r
Press and hold in the
PTT
switch,
MONITOR
switch,
and key while turning the transceiver on to enter
the alignment mode.
r
Rotate the
DIAL
selector knob to select the “
WFM HITS
xxx
.”
r
Press the key momentarily, then adjust the hys-
teresis level using the
DIAL
selector knob (default:
000
).
r
Turn the transceiver off.
AM & Narrow FM Squelch Threshold Adjustment
r
Connect the Radio Tester to the antenna jack, and ad-
just its output level to –11 dBµ (with standard AM
modulation: 30 % AM modulation @ 1 kHz) at 128.000
MHz.
r
Set the transceiver to 128.000 MHz and turn the trans-
ceiver off.
r
Press and hold in the
PTT
switch,
MONITOR
switch,
and key while turning the transceiver on to enter
the alignment mode.
r
Rotate the
DIAL
selector knob to select “
AM
/
FM TH SQ
xxx
.”
r
Press the key momentarily (you will hear a long
beep), then press and hold in the key (until you
hear the short beep).
r
Turn the transceiver off.