http://elecraft.85.s1.nabble.com/Kx1-Z1-Encoder-testing-tp2479809p2480636.html
base - (and therefore have the same resistance reading). Check again
> Another thing I meant to tell you in the las email. Unrelated to z1.
>
> I did the resistance checks on page 54. All checks out good except for
> Q4 Collector. I am getting 9.63k instead of >10k. Is this a problem?
> If so where should I look.
>
> Burke Jones
> Sent from my iPhone
>
> On Mar 14, 2009, at 7:37 PM, Don Wilhelm <
[hidden email]> wrote:
>
>
>> Burke,
>>
>> Yes, you can test the encoder and its circuit to the microprocessor
>> with a DMM.
>> Measure the voltage from the encoder pins as you slowly rotate the
>> encoder shaft. The outer two pins in the row of 3 are the ones to
>> measure. As you rotate the shaft, the voltage should jump between
>> zero volts and something close to 5 volts. If it does not go to
>> zero, there is a problem with the encoder.
>> If the voltage does not go up to the vicinity of 5 volts, look
>> carefully at RP3 and U1 pins 3 and 4.
>>
>> If that does not reveal a problem, I can give you some resistance
>> checks to make too.
>>
>> 73,
>> Don W3FPR
>>
>> Burke Jones wrote:
>>
>>> I am almost done with my KX1. During each test section I have
>>> noticed that there seems to be a problem. Sometimes turning Z1
>>> changes the frequency display but sometimes when you turn it the
>>> last 2 digits on the display just go back and fourth - like from 1
>>> to 2 then 1 then 2.
>>>
>>> I have triple checked the solder connections at Z1.
>>>
>>> I am trying to figure out if I might have a faulty Z1 encoder. Can
>>> anyone tell me how I could use my DMM to test directly at the
>>> "leads" of the Z1? If so which leads and what should I look for?
>>>
>>> Thanks for all your help!!
>>>
>>> Burke Jones
>>> N0HYD
>>> Http://www.n0hyd.com
>>>
>>> Sent from my iPhone
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