Optical Encoder for DDS

This is a USED Optical encoder for use with my DDS

From what I guess it was a special made by Oak Grigsby, it is not listed in their current offerings.
The case is Metal (approx 1 in x 1 in).
These are Used, removed from equipment, but guaranteed to work.
There are 128 pulses per revolution (you can achieve 256 ticks per revolution with appropriate setup)

A mounting nut and washer included.

Pushbutton switch NOT included you will have to add your own (SPST-NO)

Pricing:

SOLD OUT

Installation instructions:
Encoder Cnx

The Encoder has 4 pins on the back, labeled: + A B - These come out on a grey 4 conductor cable, the gound line is generally striped black. Some of these have a connector on the end, I recoment that you just cut this off.

Connect Encoder pin "+" to +5v on the PCB
Connect Encoder pins A, B to the holes marked A.B on the PCB photo above.
(Note that you can reverse the tuning direction, by exchanging A,B)
Connect the encoder pin labeled "-" to ground.
Connect the pushbutton switch pins to the holes makes PB-SW and GND
NOTE: Do not connect the power up backwards, you WILL permanently damage the encoder

You will need to connect the serial port and change some paramtertes in the micro. (No programming is required) Refer to the RS-232 manual on This page Change these parameters:
- Change parameter #4 to 0.001 (Step size)
- Change parameter #5 to 0.003 (3 for 128pulse, 1 for 256)
- Change parameter #6 to 0.200 (Loop delay)
- Change parameter #7 to 1.100 (Acceleration)
- Change parameter #8 to 0.000 (Debounce)
- Change parameter #9 to 0.001 (Tick Divider)
If you purchase the deluxe kit with optical encoder, your micro will already have these changes.

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