EMI/RFI Band Application System for .125 & .250 Shield Termination Bands
ONE-STEP BAND APPLICATION TOOL PROCEDURES
FOR M85049/128-03, /128-04, /128-07, AND /128-08 BANDS
Step 1: Prepare the Connector and Cable Braid
Prepare the connector and cable braid for band termination process.
Step 2: Prepare Band
Using an appropriate size band, feed the end of the band through the narrow slot on the buckle twice. This will create a double-looped band. Never use a single-looped band. To hasten the termination process on smaller adapters, pull on the end of the band to reduce the diameter of the loop.
Step 3: Insert Looped Band into Tool
Squeeze the release lever and insert the end of the band into the nose of the tool. Ensure the orientation of the band matches the graphic on the body of the tool (coil down when the tool is held upright).
Step 4: Positioning
Position the connector and the shield assembly through the band.
Step 5: Tighten Band around Braid/Connector
Repeatedly squeeze the tensioning handle until the band closes around the assembly. Once the band is close around the assembly, use half strokes of the handle until the band is tight against the braided cable. Release the tensioning handle and allow it to open fully. With one final stroke, close the tensioning handle until it locks against the tool body. This indicates that the band has been tightened to the pre-set tension.
Step 6: Cut Off
Once the tensioning handle is locked in place, squeeze the cut-off handle to finish the termination process. Both handles will open up on their own. (If shrinkable tubing is to be applied, it is recommended that the band is wrapped in tape and the excess braid folded back over the band to prevent cutting of shrinkable tubing.)
Step 7: Remove Excess Band Material
Release the tensioning handle and then squeeze the release lever. While squeezing the release lever, carefully pull on the band and slide it out of the tool and discard.
TWO-STEP BAND APPLICATION TOOL PROCEDURES
FOR M85049/128-01, /128-02, /128-05, AND /128-06 BANDS
Step 1: Prepare the Connector and Cable Braid
Prepare the connector and cable braid for band termination process.
Step 2: Prepare Band
Using an appropriate size band, feed the end of the band through the narrow slot on the buckle twice. This will create a double-looped band. Never use a single-looped band. Pull on the end of the band to reduce the diameter of the loop.
Step 3: Insert Looped Band into Tool
Insert the band into the banding tool at least 1.75 inches, the band loop should be orientated on the upper side of the tool’s nose. Actuate the movable tensioning handle of the tool one complete stroke to insure that the band has been captured by the gripping mechanism.
Step 4: Positioning
Position the connector and the shield assembly through the band.
Step 5: Tighten Band around Braid/Connector
Actuate the movable tensioning handle of the tool until the band is snug and tool resistance is felt, then release the movable handle and actuate the handle one full stroke thus locking the movable handle (locking occurs at the pre-set tension).
Step 6: Bend and Cut Band
To complete the termination, the band must be bent 90° by lifting the cutter lever upwards, and cut by depressing the cutter lever downwards.
Note: Sometimes the movable handle will open during the bend or cut operation. This is normal.
Step 7: Remove Excess Band Material
Remove excess band material from the tool by pulling out toward rear of tool.
Step 8: Roll Over Tab
The cutoff tab must be rolled over 180° in a manner which will prevent slippage Use the Tab Roll-Over Tool to perform the rollover. NOTE: Slippage may occur if rollover exceeds 180°
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GENERAL PROCEDURES FOR BANDING
Careful measurement should be made prior to installing the backshell. The outer jacket is then uniformly removed at a distance which would allow the braid to make a comfortable transition onto the backshell termination area. This dimension will vary depending upon the differences between cable and backshell diameters or other application dependent factors.
The braid is then trimmed to a length which will allow it to extend 1 inch past the backshell termination platform. Then the braid is carefully folded rearward to expose the wires which will be inside the backshell.
A sufficient number of wraps of self-vulcanizing tape (normally red in color) are applied over the wires to buildup a diameter slightly less than the inside diameter of the backshell. Care should be taken not to apply tension to the contacts located in the outer perimeter of the connector.
These layers of tape are followed by a minimum of one layer of Teflon tape which will prevent adhesion with the backshell and other components.
The backshell is then installed onto the connector, using a nonabrasive tool such as a strap wrench. The braid is then carefully moved from under the backshell. It is important to retain the woven characteristics of the braid during this step.
Use self vulcanizing tape or a preformed component to build up the area behind the backshell. It is important that the braid is supported in the transition from the backshell rear diameter to the natural diameter of the wire bundle. Leave approximately 1/8 inch spacing between the tape wrap and the backshell.
The braid is pushed into position over the backshell termination platform. Care must be taken to make sure the weave is uniform and no large “windows” are present. A shield termination band is then loaded into the tool. The band is then slid over the connector/backshell assembly into a position of alignment with the termination platform. Apply an adequate amount of pressure in line with the cable as it enters the backshell to allow the 1/8 inch space to be reduced to zero. The tool is then activated to the preset tension and the band terminated according to the individual tool’s procedures.
For braided a non-jacket cable use fine point shears to trim the excess braid as close to the connector side of the bands as possible.
Do not leave any unsecured braid wires longer than 1/8 inch. Do not allow the trimmed wires to fall into any areas where they may present a foreign object damage hazard.
PROCEDURE FOR SPLICING
The jacket is present, and shield are cut and separated to expose the wires requiring service. Care must be taken to avoid damaging the insulation on internal wires. The required service is then completed.
The wire bundle is then protected by a few wraps of self-vulcanizing tape followed by 2–3 layers of teflon tape. An appropriate size split ring set is then selected and installed. One layer of teflon tape is applied over the split ring set to hold the halves in position while the next steps are being performed.
The braid is then overlapped across the split ring set. Be sure the braid ends protrude completely under the band in both directions.
Heat shrinkable tape is then applied over the splice. Where a jacketed cable is used, be sure the tape extends onto the jacket in both directions.
For more information on Banding
Banding Tool Applications
One-Step Banding Tool System
Two-Step Banding Tool System