Good question Mark. You will get all kinds of misinformation about this from
non-technical types out there but here's the facts. As you may already know,
solid state devices do not run depend on a flow of electrons like vacuum
tubes did. Instead, they depend upon a flow of "holes".
In most digital devices, these holes are included at no extra charge however
with TenTec, you must generate your own holes by cranking the optical
encoder. Turning the encoder clockwise forces the holes from the encoder's
output into the digital hole counter, DHC. Turning the encoder counter
clockwise sucks the holes back out of the counter resulting in a lower
frequency.
It's really quiet crude but it certainly works better than PTO grease. 73
Steve Ellington N4LQ.
----- Original Message -----
From: "Mark Erbaugh" <mark@microenh.com>
To: "Tentec (E-mail)" <tentec@contesting.com>
Sent: Tuesday, August 13, 2002 2:11 PM
Subject: [TenTec] Optical Encoder operation
I believe I understand the basic operation of an optical encoder, such as
the 302. As you turn the knob, a series of holes on a plate connected to the
shaft generate a series of pulses which the Pegasus software counts and
convert into a value indicating movement. My question is how does the
Pegasus determine which way (CW or CCW) the knob is being turned?
Mark
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