Vertex Standard VX-2500U, Service Manual, Page: 17 / 79

17
Alignment
Move the Slide bar, as needed, to set the Max
Deviation (Wide) to the following specification,
as indicated on the deviation meter.
Max Deviation (Wide): 2.8[kHz](±0.1[kHz])
When the desired deviation level is attained,
press "OK" to lock in the new data.
Set the transceiver to CH#2, and set the Max De-
viation (Narrow) to the following specification,
as indicated on the deviation meter.
Max Deviation (Narrow): 1.4[kHz](±0.1[kHz])
When the desired deviation level is attained,
press "OK" to lock in the new data.
Modulation balance
This parameter is used to align Modulation balance.
Set the transceiver to CH#1 via the "Channel" box
located upper right corner on the "Alignment"
window previously.
To adjustment click the left mouse button on the
"
Modulation balance " then " Start " button.
Move the Slide bar, as needed, to set the modula-
tion (Wide) wave as follows.
When the desired the modulation wave is at-
tained, press "OK" to lock in the new data.
Set the transceiver to CH#2, and set the modula-
tion (Narrow) wave as follows.
When the desired deviation level is attained,
press "OK" to lock in the new data.
OK NG NG
Adjust the AF generator output level to
774mVrms(0dBm) at 300Hz to the pin3 of the
J1502 (D-sub 9pin).