Vertex Standard VX-131 Series, Руководство по обслуживанию

Страница: 18 / 34

18
RX Sensitivity
Set the transceiver to “CH 3 (173.995 MHz)“ via the
“
CH ” box.
Injust a 160.005 MHz siganl at a level of 40dBµ with
±3.0 kHz deviation with a 1 kHz to the Antenna Jack.
Double click the left mouse button on the “ RX Sensi-
tivity ” parameter to open the pop-up window.
Move the Slide bar, as need, to tune for best sensitiv-
ity; ultimately, the transceiver should be aligned so
that the RF Signal Generator output level is –6 dBµ
EMF (0.25 µV) or less for 12 dB SINAD.
Click the the left mouse button on the [ OK ] box to lock
in the new data.
Alignment
Threshold NSQ Level (Wide)
Set the transceiver to “CH 2 (160.005 MHz/Wide)“ via
the “
CH ” box.
Injust a 160.005 MHz siganl at a level of –10dBµ with
±3.0 kHz deviation with a 1 kHz to the Antenna Jack.
Double click the left mouse button on the “ Threshold
NSQ Level ” parameter to open the pop-up window.
Move the Slide bar from the Value “ 0 ” position to the
position which the LED indicator on the transceiver's
top panel will blinks green.
Click the the left mouse button on the [ OK ] box to lock
in the new data.