Re: CM11A hangup: Any better products?

[nobody@xxxxxxxxxxxx (Dave Houston)]

So you think they adjust the PIC clock frequency by guess and by gosh?

Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:

>Hello Dave,
>
>> If you look at the schematic of the current RR501 you'll find about the same
>> number of components, including the same tuned transformer that's used with
>> the discrete oscillator, in the circuit driven by 120kHz from the PIC. It
>> needs alignment, too.
>
>I believe you mean the LC tank circuit. Yes, it needs aligment. But it
>is only a peaking operation where all you need is level metering. A
>circuit that is in an oscillator requires a frequency counter which is
>more expensive in production. Assembling a diode concoction on the pogo
>pins of a production tester is easy if it can't digest 120kHz directly.
>However, measuring a frequency isn't possible with cheaper testers.
>
>Regards, Joerg
>
>http://www.analogconsultants.com