Vertex Standard VX-160V Service Manual page 15

Vhf fm transceiver
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MAX Deviation
r Set the transceiver to CH 2 (band center).
r Inject a 1 kHz tone at –17 dBm to the MIC jack.
r Open the "Adjust" window on CE44, then select the
"MAX Deviation" parameter.
r Press the [ ENTER ] key to enable programming of this
parameter; use the [ ¡ ] or [ ¢ ] arrow keys so that the
deviation meter reading is ±4.2 kHz (±0.1 kHz) (for
25 kHz steps) or ±2.1 kHz (±0.1 kHz) (for 12.5 kHz
steps) deviation.
r Press the [ ENTER ] key to lock in the new data.
CTCSS Deviation
r Set the transceiver to CH 2 (band center).
r Open the "Adjust" window on CE44, then select the
"CTCSS Deviation" parameter.
r Press the [ ENTER ] key to enable programming of this
parameter; 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.
r Press the [ ENTER ] key to lock in the new data.
DCS Deviation
r Set the transceiver to CH 3 (high band edge).
r Open the "Adjust" window on CE44, then select the
"DCS Deviation" parameter.
r Press the [ ENTER ] key to enable programming of this
parameter; use the [ ¡ ] or [ ¢ ] arrow keys so that the
deviation meter reading is ±0.75 kHz (±0.1 kHz) (for
25 kHz steps) or ±0.35 kHz (±0.1 kHz) (for 12.5 kHz
steps) deviation.
r Press the [ ENTER ] key to lock in the new data.
RF Frequency
r Set the transceiver to CH 2 (band center).
r Open the "Adjust" window on CE44, then select the
"RF Frequency" parameter.
r Press the [ ENTER ] key to enable programming of this
parameter; use the [ ¡ ] or [ ¢ ] arrow keys so that the
frequency counter displays the band center frequency
(±100 Hz) for the version being aligned.
r Press the [ ENTER ] key to lock in the new data.
Sensitivity
r Set the transceiver to CH 3 (high band edge).
r 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.
r Open the "Adjust" window on CE44, then select the
"RX Tune" parameter.
r Press the [ ENTER ] key to enable programming of this
parameter. Use the [ ¡ ] or [ ¢ ] arrow keys to tune for
best sensitivity; 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.
r Press the [ ENTER ] key to lock in the new data.
Alignment
15

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