Vertex Standard VXA-200, Service Manual

Page: 11 / 28

11
Alignment
Receiver Section
AM Squelch Hysteresis Adjustment
ˆ
Press and hold in the
PTT
switch,
MONITOR
switch,
and [
ENT
( )] key while turning the transceiver on
to enter the alignment mode.
ˆ
Rotate the
DIAL
selector knob to select “
AMHS xxx AMHS xxx
AMHS xxx AMHS xxx
AMHS xxx
.”
ˆ
Press the [
ENT
( )] key momentarily, then adjust the
hysteresis level using the
DIAL
selector knob ( Default
Setting : 01 ).
ˆ
Press the [
ENT
( )] key.
ˆ
Turn the transceiver off.
FM Squelch Hysteresis Adjustment
ˆ
Press and hold in the
PTT
switch,
MONITOR
switch,
and [
ENT
( )] key while turning the transceiver on
to enter the alignment mode.
ˆ
Rotate the
DIAL
selector knob to select “
FMHS xx FMHS xx FMHS xx FMHS xx FMHS xx
.”
ˆ
Press the [
ENT
( )] key momentarily, then adjust the
hysteresis level using the
DIAL
selector knob ( Default
Setting : 01 ).
ˆ
Press the [
ENT
( )] key.
ˆ
Turn the transceiver off.
AM Squelch Threshold Adjustment
ˆ
Connect the Radio Tester to the antenna jack, then
adjust the output level to –9 dB
μ (with a standard AM
modulation: 30 % AM modulation @ 1 kHz) at 128.000
MHz.
ˆ
Set the transceiver to 128.000 MHz and turn the trans-
ceiver off.
ˆ
Press and hold in the
PTT
switch,
MONITOR
switch,
and [
ENT
( )] key while turning the transceiver on
to enter the alignment mode.
ˆ
Rotate the
DIAL
selector knob to select “
AMTH xx AMTH xx
AMTH xx AMTH xx
AMTH xx
.”
ˆ
Press the [
ENT
( )] key twice.
ˆ
Turn the transceiver off.
FM Squelch Threshold Adjustment
ˆ
Connect the Radio Tester to the antenna jack, then
adjust the output level to –11 dB
μ (with a standard
FM modulation: ±3kHz deviation @ 1 kHz) at 163.275
MHz.
ˆ
Set the transceiver to 163.275 MHz and turn the trans-
ceiver off.
ˆ
Press and hold in the
PTT
switch,
MONITOR
switch,
and [
ENT
( )] key while turning the transceiver on
to enter the alignment mode.
ˆ
Rotate the
DIAL
selector knob to select “
FMTH xx FMTH xx FMTH xx FMTH xx FMTH xx
.”
ˆ
Press the [
ENT
( )] key twice.
ˆ
Turn the transceiver off.
AM Squelch Tight Adjustment
ˆ
Connect the Radio Tester to the antenna jack, then
adjust the output level to +10 dB
μ (with a standard
AM modulation: 30 % AM modulation @ 1 kHz) at
128.000 MHz.
ˆ
Set the transceiver to 128.000 MHz and turn the trans-
ceiver off.
ˆ
Press and hold in the
PTT
switch,
MONITOR
switch,
and [
ENT
( )] key while turning the transceiver on
to enter the alignment mode.
ˆ
Rotate the
DIAL
selector knob to select “
AMTI xxx AMTI xxx AMTI xxx AMTI xxx AMTI xxx
.”
ˆ
Press the [
ENT
( )] key twice.
ˆ
Turn the transceiver off.
FM Squelch Tight Adjustment
ˆ
Connect the Radio Tester to the antenna jack, then
adjust the output level to +10 dB
μ (with a standard
FM modulation: ±3kHz deviation @ 1 kHz) at 163.275
MHz.
ˆ
Store Weather Channel “ WX-010 ” into a “regular”
memory channel, per the instructions in the box to
the bottom.
ˆ
Recall the memory channel into which you just stored
Weather Channel “
WX-010 ” in the previous step, then
turn the radio off.
ˆ
Press and hold in the
PTT
switch,
MONITOR
switch,
and [
ENT
( )] key while turning the transceiver on
to enter the alignment mode.
ˆ
Rotate the
DIAL
selector knob to select “
FMTI xxx FMTI xxx
FMTI xxx FMTI xxx
FMTI xxx
.”
ˆ
Press the [
ENT
( )] key twice.
ˆ
Turn the transceiver off.
How to Store Weather Channel “WX-010”
into a Regular Memory Channel
ˆ
Press the [
ENT
( )] key (repeatedly, if nec-
essary) to select the Weather channel mode.
The
VXA-220
will scan quickly through the
Weather channels.
ˆ
Press the
MONITOR
switch momentarily to
stop the scanning, then rotate the
DIAL
knob
to select the channel “ WX-010 .”
ˆ
Press and hold in the [
MW
(
SPL-W
)] key for 2
second, then rotate the
DIAL
knob to select the
memory channel number for storage.
ˆ
Now, press and hold in the [
MW
(
SPL-W
)] key
for 2 second to save the entry and exit.