Vertex Standard VX-2500U Service Manual page 17

 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.
 Adjust the AF generator output level to
774mVrms(0dBm) at 300Hz to the pin3 of the
J1502 (D-sub 9pin).
VX-2500 UHF Service Manual
 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
Alignment
NG NG
17