Holoseat

h1. Tone Ring Assembly

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h2. Tools

* Holoseat Test Stand

h2. Materials

* (optional) Instant/super glue (prefer Loctite Super Glue Ultragel Control)

* (1) 18PTR-01: 18 Pole Tone Ring Base

* (1) 18PTR-02: Tone Ring Cover

* (36) 18PTR-03: N52 3/16" x 3/16" Neodymium Cylinder Magnets

h2. Safety Issues

* Use safety glasses when working with small, high powered magnets to avoid eye injury from flying magnets  

* Be sure to maintain physical control of magnets (those being placed and those already placed) to avoid flying magnets

h2. Product

HS-03: 18 Pole Tone Ring

h2. Procedure

h3. 1. Place Magnets

# Select a *18PTR-03: N52 3/16" x 3/16" Neodymium Cylinder Magnet* and place it length wise into one of the slots in the *18PTR-01: 18 Pole Tone Ring Base*

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# Select another magnet and find its polarity by placing it along the outside edge so that it becomes attracted to the previous magnet

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# Rotate the magnet from the previous step 180 degrees (so that the pole attracted to the previous magnet is facing out to create a pole pair) and place it in the next slot in the base

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# Repeat the previous two steps until the tone ring is fully populated

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h3. 3. Verify Magnet Placement

# Set up the Holoseat Test Stand

## Ensure the calibrated sensor is attached to the sensor controller

## Ensure the power and USB connections are all configured according to the test stand operating instructions

## Place the new tone ring onto the tone ring adapter

# Run test

## Clear the sensor stats

## Run the stepper motor 1 revolution, in a CW direction, at 30 RPM

## Get the sensor stats and verify the number of reported poles is 18

# Remove the tone ring from the tone ring adapter

h3. 4. Complete the Tone Ring

# Align and place the *18PTR-02: Tone Ring Cover* over the *18PTR-01: 18 Pole Tone Ring Base*

# Press the parts firmly to secure the cover to the base

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