RF-KIT RF2K-S - Indication Area Segment-Size

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Operating and installation instructions RF-KIT Power Amplifier RF2K-S
6.5 Indication area Segment-Size
Indication area Segment-Size displays the usable segment width for a
stored setting in kHz. The term Segment-Size describes the frequency
range for which a stored setting can be used.
- The lower the transmit frequency, the narrower this frequency range
becomes.
- The higher the transmit frequency, the wider this frequency range beco
-
mes.
Example:
The tuned frequency is f
0
= 3,675 MHz. For the 80 m band the Segment-
Size is 9 kHz. A tuner setting already determined for 3.678 MHz therefore
applies (rounded) for the frequency range
f
SeGMeNTCeNT eR
= 3,678 MHz ± f
SeGMeNT-SIZe
/2 = 3,674 - 3,682 MHz.
If you you leave f
SeGMeNTCeNT eR
= 3,678 MHz and tune your exciter to f
0
= 3,675
MHz, the deviation to f
SeGMeNTCeNT eR
will be displayed.
The deviation to f
SeGMeNTCeNT eR
is -3 kHz, as displayed in (Dist:) in the
screenshot above.
A valid tuning process will be confirmed by display of „Match!“
If the deviation from the center of the currently used tuning segment
is more than f
SeGMeN TSIZe
/2, then the antenna tuner changes to the settings
stored for the next available tuning segment in tuning direction.
If the following segment has not yet been assigned to a setting, the color
of indication area Segment-Size changes from green to yellow.
From a difference of more than twice the segment size to the next seg
-
ment with valid settings stored, the antenna tuner warns with the note:
„no match found!!“.
NOTE:
If the antenna tuner is activated, but no valid
tuning is stored yet for the used frequency, trans-
mitting is not possible!
Therefore no transmission is possible without successful antenna tuning
process.
f
SeGMeNTCeNT eR
3,678
f
SeGMeNTLIMIT
3,674
f
SeGMeNTLIMIT
3,6823,670 3,685
Tuning process
required
Setting available,
no tuning required
f
0
Tuning direction
Setting still acceptable,
tuning possible
Segment A Segment B Segment C Segment D Segment E Segment F Segment G Segment H
Setting still acceptable,
tuning possible
• Segment C
and D refer to the stored setting values of Segment B.
• Segment F and E refer to the stored setting values of Segment H.
•
To transmit at a frequency in Segment E a tuning process is necessary.