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
contact (IDC) connector terminations. It is critical to remove the foil covering
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
(See Figures 4 and 5)
a.
Lock a test sample of cable into the Upgraded
Carpenter Model 47 using Handle 1
b.
Open micrometer just more than cable height
c.
Close micrometer a small increment and
slice blades using Handle 2
d.
Cycle Handle 3 to test strip foil covering
e.
Open blades, remove sample, and
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
* Note: Carefully read and follow the manufacturer’s precautions and
directions for use when working with Carpenter Model 47 Cable Stripper.
