Bob, did you open an Oak Grigsby encoder? It appears to be completely
sealed.
Barry N1EU
On Sat, Jun 21, 2014 at 10:41 PM, Bob McGraw - K4TAX <RMcGraw@blomand.net>
wrote:
> Shouldn't the two outputs be 90 degrees quadrature? "A" leads "B" in one
> direction and "B leads "A" in the opposite? I seem to think so. I had to
> replace the MULTI encoder in my Eagle and I seem to recall it worked this
> way.
>
> I actually opened the original one, cleaned it, put it back together and
> it works. I don't advise this however, unless you have a lot of spare time
> with nothing to do, good illumination and steady hands under good
> magnification.
>
> 73
> Bob, K4TAX
>
>
> ----- Original Message ----- From: "Barry N1EU" <barry.n1eu@gmail.com>
> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
> Sent: Saturday, June 21, 2014 1:59 PM
> Subject: Re: [TenTec] Orion 565 tuning encoder
>
>
>
> After hooking up a scope, I think the encoder is bad. I'm seeing negative
>> going pulses on the A pin but not seeing positive going pulses on the B
>> pin.
>>
>> Barry N1EU
>>
>>
>> On Sat, Jun 21, 2014 at 6:41 PM, Barry N1EU <barry.n1eu@gmail.com> wrote:
>>
>> I measure 4.9V on the A9 board. I flipped the rig over and now I'm
>>> measuring 4.3V on the encoders (?!). Not sure what's going on. vfoA
>>> encoder is still working fine.
>>>
>>> Barry N1EU
>>>
>>>
>>> On Sat, Jun 21, 2014 at 6:34 PM, Barry N1EU <barry.n1eu@gmail.com>
>>> wrote:
>>>
>>> I measure 4.63V on both tuning encoders. And both encoders work on the
>>>> A
>>>> cable, so it doesn't seem like that would explain it. But I'll poke
>>>> around
>>>> the A9 board. I replaced all the A9 capacitors a few months ago.
>>>>
>>>> Thanks & 73,
>>>> Barry N1EU
>>>>
>>>>
>>>> On Sat, Jun 21, 2014 at 5:23 PM, shristov <shristov@ptt.rs> wrote:
>>>>
>>>>
>>>>> Barry N1EU <barry.n1eu@gmail.com> wrote:
>>>>>
>>>>> > Thanks Sinisa. vfoB would not tune at all.
>>>>>
>>>>> I had the same problem. VFO B encoder had a supply voltage of only
>>>>> 4.66
>>>>> V.
>>>>> After tightening 4 fixing screws on the A9 board, the voltage at
>>>>> encoder
>>>>> rose to 4.77 V
>>>>> and it started workig.
>>>>>
>>>>> 73,
>>>>>
>>>>> Sinisa
>>>>> _______________________________________________
>>>>> TenTec mailing list
>>>>> TenTec@contesting.com
>>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>>>
>>>>>
>>>>
>>>>
>>> _______________________________________________
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>>
>>
>
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