User manual

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Once the coupler has verified RF power, the tuning sequence
proceeds as follows:
1. Output capacitance is added until the phase switches to
capacitive.
2. At this point, series inductance is added until the antenna is no
longer capacitive.
3. Fine tuning is performed by trying a small amount of input
capacitance (this may or may not be required).
4. At this point, the program executes the same as step 5
(antenna too short).
The preceding gives a simplified program flow on only two
possible antenna conditions. Much more complex tuning is
normally the case. Further detailed description, however, is
beyond the scope of this manual.
5.1.9.3 JP1 – Tuning Elements Out during
Receive
JP1 – Factory Default
Setting - NO
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YES - In this position the software will retain data required in
transmit to match the coupler while removing all tuning elements
when no forward power is detected.
NO - In this position the coupler will retain the required tuning
data and will change nothing whether in receive or transmit. If
typical operation is out of band duplex, Yes would be most likely
to give better performance. If in band operation is typical and
duplex or simplex is the predominant mode of operation, then
No
is usually the better choice.
5.1.9.4 JP3 – Tune from Memory
YES - In this position the coupler will recall data previously saved
and try this data before attempting to re-tune. If the data is valid
and the VSWR is less than 2:1 the tune is completed. In this
position the coupler will save any new data in its memory for any
frequency. A new frequency must first be learned, while in this
mode, before it can be recalled.
JP3 – Factory Default
Setting - YES