Max Deviation; Modulation Balance - Vertex Standard VX-2500EV Service Manual

Alignment

Max Deviation

This parameter is used to align Max Deviation.
Set the transceiver to CH#1 or CH#2 via the "CH"
box located upper left corner on the "Alignment"
window previously.
Adjust the AF generator output level to
39mVrms(-26dBm) at 2 kHz to the pin3 of the
J1502 (D-sub 9pin).
To adjustment double-click the left mouse but-
ton on the "
window.
Move the Slide bar, as need, to set the Deviation
(Wide or, Narrow) to the following specification,
as indicated on the deviation meter.
VCO Deviation(Wide): 3.0[kHz](±0.1[kHz]) or,
VCO Deviation(Narrow): 1.5[kHz](±0.1[kHz])
When the desired deviation level is attained,
press "OK" to lock in the new data.
14
" box to open pop-up

Modulation balance

This parameter is used to align Modulation balance.
Set the transceiver to CH#1 or CH#2 via the "CH"
box located upper left corner on the "Alignment"
window previously.
Adjust the AF generator output level to
774mVrms(0dBm) at 300Hz to the pin3 of the
J1502 (D-sub 9pin).
To adjustment double-click the left mouse but-
ton on the "
pop-up window.
Move the Slide bar, as need, as need, to set the
modulation wave as follows.
When the desired the modulation wave is at-
tained, press "OK" to lock in the new data.
Press [Enter] to lock in the new data.
" box to open