vision microsystems EPI 800, Уведомление о установке, Страница: 63 / 91

SECTION 4: INSTALLATION REFERENCE
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EPI800 Manual.doc EPI 800 MANUAL
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2001 Vision Microsystems Inc.
APPENDIX B: DPU P1 Connector Harness Fabrication
The proper fabrication of the DPU P1 and P2 harnesses requires that the
following steps be carefully followed. Refer to FIGURE 5 for pictures of the
different stages of fabrication and APPENDIX G for recommended tools.
Initial preparation:
The individual cables need to be cut to length and prepped from the bulk
shielded cable provided. Follow the steps below:
Step 1. Determine the required length of the cable to be connected and
cut it to this dimension (plus a little extra).
Step 2. Trim cable exterior jacket back 2 ½ " on both ends.
Step 3. On the end to be connected to P1, trim the braided shield back so
that only ¼" is left.
Step 4. Remove the exposed inner foil and clear plastic wrap.
Step 5.
Tin the ¼” of shielding with solder.
Step 6. Note that unused wires and shielding should be cut off close to the
outer jacket.
Repeat steps 1 through 6 until all cables are prepared. Continue with the
next procedure.
Shield interconnection:
The shields of the prepared transducer cables must now be ‘daisy-
chained’ together at the ends that will be attached to connector P1:
Step 1.
Cut one 2” piece of 20 awg stranded wire for each cable you
prepared and strip both ends back ¼". Bend e
ach piece into a ‘U’
(shaped) jumper.
Step 2. Twist and solder the ends of the jumpers together. Leave the two
outside ends of the jumper chain unattached.
Step 3. Solder each junction to the shield of each cable. You should now
have only one jumper end not connected.
Step 4. Ins
tall and shrink 1" of heat shrink tubing over each ‘shield to
jumper’ connection.