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E1501-4-2 Assembly Instructions    [1500 Series]   

3mm Tight Buffered Fiber Instructions (15 Steps)

Specifications:

Type:  ST*, Field Installable, ST*II Compatible

Mode: Multimode

Ferrule Material:  All Borosilicate glass ferrule

Curing Type:  Anaerobic and Epoxy Curable

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Step 1

Slide tapered end of 3mm flame retardant boot onto 3mm cable approx. 6".  Starting with the small side of the crimp ring, slide the crimp ring onto the 3mm Cable.

[Diagram]

 

Step 2

Place 3mm jacketed cable over Template.  Mark 1.505 dimension, as per template.  Strip.

[Diagram] [Template]

 

Step 3

Trim Kevlar whiskers approx. 1/2".

[Diagram]

 

Step 4

Place .9mm buffered tube over template.  mark .74" dimension, as per template.  Strip buffer tube off in front of 3mm cable with No Nik stripper.

[Diagram] [Template]

 

Step 5

Now the 3mm jacketed cable will appear as shown in diagram.   

[Diagram]

 

Step 6

This step is very important.  Clean stripped fiber with isopropyl alcohol soaked lint free cloth or a dry lint free cloth.  To clean fold cloth in half over fiber and gently squeeze on the fiber and pull it through the cloth.  This will clean the fiber of debris.  Set aside carefully.

[Diagram]

 

Step 7 - Gluing the Fiber (Anaerobic and Epoxy)

Anaerobic Instructions

  1. Take Loctite RC680 adhesive with flat end needle and insert into the back end of the connector ferrule holder. When it bottoms out, gently squeeze adhesive until a green dot forms in front of the ferrule. Then slowly withdraw adhesive (while maintaining pressure to allow some adhesive to coat the inside of the ferrule and ferrule holder.)

  2. Brush the stripped part of the fiber approx. .615" of the fiber from in front of the buffer (leaving 1/8" (.125") from the front end of the stripped part of the fiber uncoated) and 1/4" of the buffer with Loctite 7649 primer.  Wait 15 seconds to allow primer to dry.

  3. Thread the fiber through the back end of the ferrule holder until it bottoms out.  [Diagram]

  4. Slide the crimp ring over Kevlar whiskers until flush with back of connector.  Using the Sargent 2165 CT crimp tool, crimp back portion of larger diameter crimp ring w/.178 die.  Next, crimp small portion of crimp ring w/.128 die.  [Diagram]

  5. Slide flame retardant boot over crimp ring.  [Diagram]

  6. Proceed to Step 8.

Epoxy Instructions

  1. Mix Epo Tek 353ND epoxy (recommended).

  2. After mixing epoxy, fill a syringe with epoxy. Place needle tip over syringe and insert into back end of ferrule holder. When needle tip bottoms out, inject epoxy until a yellow dot forms in front of the ferrule. Slowly withdraw syringe (while continuing to inject epoxy to allow some epoxy to coat the inside of the ferrule holder).

  3. Thread the fiber through the back end of the ferrule holder until it bottoms out.  [Diagram]

  4. Slide the crimp ring over Kevlar whiskers until flush with back of connector.  Using the Sargent 2165 CT crimp tool, crimp back portion of larger diameter crimp ring w/.178 die.  Next, crimp small portion of crimp ring w/.128 die.  [Diagram]

  5. Slide flame retardant boot over crimp ring.  [Diagram]

  6. Place in fiber optic curing oven at 120° C or more for 3 minutes to accelerate and reduce chemical bond time. Remove from oven and allow to cool. (PVP curing oven recommended.)

  7. Proceed to Step 8.

Step 8

Cleave fiber on two sides. Pull straight up.  Carefully dispose of cleaved fiber.

[Diagram]

 

Step 9

Place PVP rubber mat over PVP lapping plate and line with 15, 5, 1, &.3 micron lapping film.

 

Step 10

Add 3 drops of water to each lapping film.  Place connector into ST* polishing puck.

 

Note for Steps 11 thru 14: 

Be sure to blow off connector and puck after each lapping sequence to prevent contamination scratching of core. 

 

Step 11

Push down on the spring 1/2 way and do 10 figure 8's, using light even pressure, with 15 micron lapping film.

[Diagram]

 

Step 12

Push down on the spring 1/2 way and do 14 figure 8's, using light even pressure, with 5 micron lapping film.

[Diagram]

 

Step 13

Push down on the spring with 100% pressure and do 10-15 figure 8's using 1 micron lapping film.

[Diagram]

 

Step 14

Push down on the spring with 100% pressure and do 10-15 figure 8's using .3 micron lapping film.

[Diagram]

 

Step 15

Then insert ferrule straight up into 100x Inspection Microscope and inspect fiber core.  Click on links below for acceptable and unacceptable polishing outcomes.

[Acceptable]  [Unacceptable]

 

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       2008 Pine Valley Precision, Inc.
       Last modified: 02/27/08