Radio Alignment Procedures
24
Softpot The alignment screens introduce the concept of the “softpot,” an
analog SOFTware-controlled POTentiometer used for adjusting all
transceiver alignment controls.
Each alignment screen provides the ability to increase or decrease the
softpot value by using a slider or the screen’s UP/DOWN arrow keys (▲
▼), or by entering the new value from the keyboard. A graphical scale
on the display indicates the minimum, maximum, and proposed value
of the softpot; see Figure 6
.
Figure 6. Typical Softpot Screen
Adjusting the softpot value sends information to the radio to increase
(or decrease) the voltage in the corresponding circuit. For example,
left-clicking the UP arrow ▲ on the Reference Oscillator screen
instructs the radio’s microcomputer to increase the voltage across a
varactor in the reference oscillator, which increases the frequency.
In ALL cases, the softpot value is just a relative number corresponding
to a digital-to-analog (D/A) generated voltage in the radio.
Perform the following procedures in the sequence indicated.
NOTE: Some of the following screens may vary depending
upon the radio under test and the version of tuner
software you are using. Refer to the software’s on-line
help.
Do NOT switch radios in the middle of any Alignment
procedure. Always left-click the Close button on the screen to
return to the MAIN menu screen before disconnecting the
radio. Improper exits from the Alignment screens may leave
the radio in an improperly configured state and result in
seriously degraded radio or system performance.
To Next Page
Loading...
