Thanks for this info. Now, please pardon my total ignorance in using
these instrument. If the scope has an input impedance of 1 Mohm, do I
still need to use the probe, or can I just use the BNC T ? I have the 50
ohm dummy on the other side of the T of course.
With the scope directly connected, I read slightly over 600 mV peak to
peak. Should be almost there, right?
Pf
>>>>> "Gunnar" == Gunnar Widell <sm3...@kkn.net> writes:
Gunnar> I also have the same problem. I got this information from Elecraft
Gunnar> support, but I have not been able to test yet since the radio is
remote
Gunnar> (Running K3 Twin with Remoterig). See below:
Gunnar> Connect a bnc tee to the XVTR OUT jack, and a 50 ohm load or
resistor to
Gunnar> one side of the tee.
Gunnar> Then use an RF probe to see if there is at least 0.224Vrms at the
other
Gunnar> side of the tee. You could use an oscilloscope to do the
measurement
Gunnar> too, but convert 0.224Vrms to peak to peak voltage for the scope.
Gunnar> Use Tune if the K3 Utility automated TX Gain calibration does not
work.
Gunnar> Also, have a look in the manual, "Calibration Procedures" 1.0
Milliwatt
Gunnar> Meter Calibration.
Gunnar> 73 de Gunnar SM3SGP @ SK3W
Gunnar> Robert Bajuk skrev 2012-02-12 18:51:
>> I do have the same problem with TX Gain Calibration, 5w and 50w
calibration
>> goes well, but 1mW calibration fails, I am getting the error something
>> like: "Power set to 0.1 mW, 1.9 MHz, TX gain calibration failed because
>> transmit power did not reach the expected value".
>>
>> I did reload FW, EE INIT, settings restore, nothing helps.
>>
>> KXV3A is enabled and set to normal in config, no jumpers on W1 and W2, 50
>> Ohm dummy load on XVTR Out is OK. XV144 does not work properly, I believe
>> that is connected with XVTR Out problems. XVTR parameters in config are
set
>> correctly.
>>
>> Any ideas?
>>
>> 73 Robert
>>
>> 2012/2/12 Don Wilhelm<w3...@embarqmail.com>
>>
>>> Did you forget to cut the jumpers when you installed the KXV3A?
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> On 2/12/2012 11:22 AM, Pierfrancesco Caci wrote:
>>>> I get the following error when trying the 1 mW calibration for a
freshly
>>>> installed KXV3A:
>>>>
>>>> Starting 1 milliwatt calibration.
>>>> Calibrating at 1.900 MHz
>>>> IsSamplingComplete: Unexpected response 'DB 0.10 MW;' to ''. State 220
>>>> Calibration power settled at ' 0.10 MW;'
>>>> 1 milliwatt calibration failed.
>>>> Elapsed time: 19.2 secs
>>>>
>>>>
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Gunnar> ______________________________________________________________
Gunnar> Elecraft mailing list
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Gunnar> Help: http://mailman.qth.net/mmfaq.htm
Gunnar> Post: mailto:Elecraft@mailman.qth.net
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--
Pierfrancesco Caci, ik5pvx
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