I think they are talking about TTL logic levels - read up on TTL transition levels on google. IIRC, HIGH is maybe 3-4V.

Jerry W4UK

At 02:38 PM 1/12/2011, Doug Allen wrote:
There are seven open collector control pins that can be configured with the
External Control Tab to go "logic high" on either transmit or receive
depending onhow youm configure them.  I am seeing  + 0.6V when"high." Is
that correct?

Doug K4LY
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