Vertex Standard VX-410 series Service Manual page 18

Vhf fm
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Alignment
CTCSS Deviation
Set the transceiver to CH 2 (band center).
To adjustment, click the left mouse button on the
CTCSS Modulation” box, then press the [ ENTER ]
“ CTCSS Modulation
CTCSS Modulation
CTCSS Modulation
CTCSS Modulation
key to open the pop-up window.
Use the [ ] or [ ] arrow keys so that the deviation
meter reading is ±0.8 kHz (±0.1 kHz) (for 25 kHz steps)
or ±0.5 kHz (±0.1 kHz) (for 12.5 kHz steps) deviation.
Press the “OK” box to lock in the new data.
MAX Ref Deviation
Set the transceiver to CH 2 (band center).
To adjustment, click the left mouse button on the “ MAX
MAX
MAX
MAX
MAX
Deviation” box, then press the [ ENTER ] key to
Ref
Ref Deviation
Ref
Deviation
Deviation
Ref
Ref
Deviation
open the pop-up window.
Use the [ ] or [ ] arrow keys so that the deviation
meter reading is ±0.5 kHz (±0.1 kHz) (for 25 kHz steps)
or ±0.4 kHz (±0.1 kHz) (for 12.5 kHz steps) deviation.
Set the transceiver to CH 2 (band center), then key the
transmitter, and confirm that the deviation is ±0.6 kHz
~ ±0.9 kHz (for 25 kHz steps) or ±0.35 kHz ~ ±0.6
kHz (for 12.5 kHz steps).
Press the “OK” box to lock in the new data.
STD Deviation
Set the transceiver to CH 2 (band center).
Inject a 1 kHz tone at –37 dBm to the MIC jack.
To adjustment, click the left mouse button on the “ MIC
MIC
MIC
MIC
MIC
Sensitivity” box, then press the [ ENTER ] key to open
Sensitivity
Sensitivity
Sensitivity
Sensitivity
the pop-up window.
Use the [ ] or [ ] arrow keys so that the deviation
meter reading is ±3.0 kHz (±0.1 kHz) (for 25 kHz steps)
or ±1.5 kHz (±0.1 kHz) (for 12.5 kHz steps) deviation.
Press the “OK” box to lock in the new data.
DTMF Deviation
Set the transceiver to CH 2 (band center).
To adjustment, click the left mouse button on the
DTMF Deviation” box, then press the [ ENTER ] key
“ DTMF Deviation
DTMF Deviation
DTMF Deviation
DTMF Deviation
to open the pop-up window.
Use the [ ] or [ ] arrow keys so that the deviation
meter reading is ±3.0 kHz (±0.1 kHz) (for 25 kHz steps)
or ±1.5 kHz (±0.1 kHz) (for 12.5 kHz steps) deviation.
Press the “OK” box to lock in the new data.
DCS Deviation
Set the transceiver to CH 2 (band center).
To adjustment, click the left mouse button on the “ DCS
DCS
DCS
DCS
DCS
Modulation” box, then press the [ ENTER ] key to open
Modulation
Modulation
Modulation
Modulation
the pop-up window.
Use the [ ] or [ ] arrow keys so that the deviation
meter reading is ±0.7 kHz (±0.1 kHz) (for 25 kHz steps)
or ±0.45 kHz (±0.1 kHz) (for 12.5 kHz steps) devia-
tion.
Press the “OK” box to lock in the new data.
Sensitivity
Set the transceiver to CH 3 (high band edge).
Tune the RF signal generator to the same frequency as
the transceiver’s, then set the generator output level to
40 dBµ with ±3.0 kHz deviation @ 1 kHz tone modu-
lation.
To adjustment, click the left mouse button on the “ RX
RX
RX
RX
RX
Sensitivity” box, then press the [ ENTER ] key to open
Sensitivity
Sensitivity
Sensitivity
Sensitivity
the pop-up window.
Use the [ ] or [ ] arrow keys to tune for best sensi-
tivity; ultimately, the radio should be aligned so that
the RF signal generator output level is –6 dBµ EMF
(0.25 µV) or less for 12 dB SINAD.
Press the “OK” box to lock in the new data.
This completes the internal alignment routine. To save all
settings and exit, press the “OK” box.
Page 18

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