Herb,
After reconnecting the NanoVNA with PuTTY, all is ok now and i can modify the frequency with span=0 as with the manual CW command.
One more time, thank you for helping me.
Best regards,
Rudi
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Le 02.06.2020 ¨¤ 00:10, hwalker a ¨¦crit?:
On Mon, Jun 1, 2020 at 10:28 AM, Rudolf Schaffer wrote:
I tried the "0" span solution but nanovna-saver refused a null value for the span.
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Rudy,
Another solution is to use PuTTY or other terminal program to control the CW frequency of the NanoVNA:
ch> sweep center 50000000
ch> sweep span 0
ch> sweep center 75000000
ch> sweep center 100000000
1. Above I've used PuTTY to set the NanoVNA center frequency to 50 MHz, and the span to 0 Hz to put the NanoVNA in CW mode.
2. Once in CW Mode you can use "sweep center <frequency in Hz)" to change subsequent CW frequencies (75 and 100 MHz above).
If your terminal program has scripting, then you can automate setting the CW mode and sweeping frequencies.
- Herb
