3M 7700 Series User Manual

Preparation Instructions for 3M
™
Round Conductor Flat,
Controlled Impedance Cable, 7700 Series
Using upgraded Model 47 Cable Stripper
from Carpenter Manufacturing Company, Inc.
Cable Preparation Instructions | July 2017
78-9102-5431-3 Rev A
3
General
This document covers cable preparation techniques and quality requirements
for the 3M
™
Round Conductor Flat, Controlled Impedance Cable, 7700 Series.
The primary cable inside the flexible foil covering is a mass-terminable ribbon
cable, constructed on a fixed-pitch interval to facilitate insulation displacement

from the primary cable only under the socket to prevent shorting. Removal of
the covering can be accomplished as described in this document or with similar
tooling and techniques.
To enhance the precision control of the Carpenter Model 47 Cable Stripper,
*
a few targeted upgrades were added. A micrometer on handle number two
and bushings were added for accuracy and tolerance. The blade orientation
was flipped and the angle was sharpened to 45° to better pierce through the
3M cable 7700 series flexible foil covering. A strip length stopper has been
added to save time with cable alignment.
Tools needed
Figure 2:
Prepared
cable
Figure 1:
Cut cable
Set blade depth
a.

b.
c. Close micrometer a small increment and

d.
e.
inspect per guidelines below
f. Repeat steps c, d, and e until foil
covering is removed but insulation
is not damaged
• Upgraded Carpenter Model 47 Cable Stripper • Standard scissors or precision utility knife • Standard ribbon cable cutter
Figure 4
Handle 2
Handle 3
Handle 1
Figure 5
Micrometer
Figure 3:
Cable ready
for termination

directions for use when working with Carpenter Model 47 Cable Stripper.

3M 7700 Series Specifications

General

Brand	3M
Model	7700 Series
Category	Cables and connectors
Language	English

Summary

General Cable Preparation

Document Overview

Covers cable preparation techniques and quality requirements for 3M™ Round Conductor Flat, Controlled Impedance Cable, 7700 Series.

Upgraded Cable Stripper Features

Details upgrades to the Carpenter Model 47 Cable Stripper for enhanced precision control, accuracy, and tolerance.

Tools and Setup Procedures

Tools Needed

Lists essential tools for cable preparation, including an upgraded stripper, scissors, and a ribbon cable cutter.

Setting Blade Depth

Instructions for setting the blade depth on the upgraded Carpenter Model 47 Cable Stripper using micrometer adjustments.

Cable Preparation Steps

Step 1: Set Blade Depth

Set the blade depth on the upgraded Carpenter Model 47, referring to the 'Set blade depth' section for details.

Step 2: Cut Cable Length

Cut the 3M cable 7700 series to the appropriate length using a ribbon cable cutter.

Step 3: Align and Lock Cable

Align the cable cut portion against the guide and push forward to contact the strip length stopper.

Step 4: Slice Covering

Close the slice blades using Handle 2 of the cable stripper.

Step 5: Remove Covering

Rotate Handle 3 to remove the foil covering from the cable.

Step 6: Reset Stripper

Reset Handles 2 and 3, then Handle 1 to their starting positions.

Step 7: Peel Remaining Foil

Remove the sample and carefully peel off any remaining foil covering.

Step 8: Inspect Sample

Inspect the prepared sample for proper foil removal and absence of insulation damage.

Step 9: Trim Excess Covering

Trim excess covering using a precision utility knife for clearance when terminating.

Preparation and Termination Guidelines

Preparation Tips

Maintain perpendicular cut edge, avoid slicing insulation, and use cycling for foil removal on complex cables.

Termination Best Practices

Ensure minimal exposed ribbon cable, prevent foil contact with IDC contacts, and remove excess foil for clearance.

Inspection Criteria

Verify insulation is not scrapped or pierced, and all foil covering is removed from cable sides.

Supporting Documents

Lists related documents for supplementary information on cable and socket assembly.