Transcript
ADCP-70-043 Issue 2, June 1998
LCC (Little Coaxial Connector) Installation Instructions These instructions provide the information necessary to terminate Little Coaxial Connectors (LCC) on coaxial cable at customer locations. The stripping and crimping tools and accessories needed for each cable type are listed below, and the step-by-step terminating instructions are included in paragraph 2, Installation Procedure. If necessary, refer to the installation drawing (provided in each kit of 25 LCC connectors) for additional illustrations of the tools and the connector parts. 1. TOOLS A. Connection Tool Kit The connection tool kit (Catalog Number LCA-600001) for little coaxial connector 1.01 installation includes the following items: crimp tool (WT-2), 735A die set (LCA-000015), stripping tool with green cassette (STC-13G), cable termination tray (LCA-000009), and connector insertion/withdrawal tool (LCA-400001), in a carrying case. All the tools are illustrated on the next page. Table 1 includes the catalog numbers of other crimp die sets and stripping tools used for 1.02 cable types other than type 735A. ADC recommends the use of either 735A or 0222 mini coaxial cable for equipment cabling to Mini DSX-3 modules. Although larger diameter cables such as RG59 and 734 are available, they are not recommended for use with high density Mini DSX-3 bays due to severe cable congestion that may result. As some company practices require the use of specific coaxial stripping tools such as, for 1.03 example, an automated programmable coaxial stripping machine, check with local company practices to see if any such requirements apply. Table 1. Cable Stripper and Die Set Selection Table 735A
CABLE TYPE 0222 RG59
734
Cable Dimensions:
Outer Diameter Center Conductor
0.127" 26 gauge
0.155" 24 gauge
0.241" 23gauge
0.236" 20gauge
0.197" 0.042"
0.197" 0.042"
0.240" 0.042"
0.240" 0.042"
WT-2 LCA-000015 STC-13G CCS-GRN
WT-2 LCA-000010 STC-13G CCS-GRN
WT-2 LCA-000012 STC-12G CCS-GRN
WT-2 LCA-000011 STC-12G CCS-GRN
Connector Crimp Dimensions:
Sleeve Center Pin Coaxial Tools:
Crimp Tool Crimp Die Set Complete Stripping Tool Replacement Cassette
4-40001-1688
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ADCP-70-043 Issue 2, June 1998
B. Tool Illustrations
XXXX LCC
LCC XXXX
10444-A
Die Set, LCA-00001X
8345-A
Crimp Tool, WT-2
MINIATURE COAXIAL CABLE ADAPTER
8346-B
Cable Stripper, STC-13G (or STC-12G)
8347-A
Replacement (Green) Cassette, CCS-GRN
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8348-A
Tightening Wrenches, LCA-000008
3335-B
Connector Insertion/Withdrawal Tool, LCA 400001
2. INSTALLATION PROCEDURE Note: Before stripping usable coaxial cable, do several test strips on spare coaxial cable to ensure that the cutting blades of the cable stripper are set to the proper depths. If necessary, adjust the blade depth settings using a thin-blade screwdriver on the rear (memory section) of the cable stripper. Cutting blade adjustments are acceptable when six consecutive test cuts produce acceptable cutting performance. Making sure that the marked end (marked with the “cable type”) goes on first, slide the crimp sleeve onto the coaxial cable. Position the crimp sleeve at least 6 inches (15.3 cm) from the end of the cable, then tape it in place.
X
MARKED END OF CRIMP SLEEVE AWAY FROM CABLE END
XX
1.
8301-B
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2.
Select the proper cable stripper and green cassette (from Table 1). Pull thumb switch away from cutting blades to fully open the cable stripper. If necessary, straighten the end of the cable. For 735A or 0222 mini coaxial cable only, insert the cable adapter between the rollers of the cable stripper, then place the end of the mini coaxial cable between the cable adapter and the green cassette, allowing it to extend about a quarterinch beyond the body of the cable stripper as shown below: 1/4 IN.
SNAP LOCK
MEMORY UNIT
SNAP LOCK
CABLE ADAPTER
8302-C
8635-A
When all cables are stripped, remove the cable adapter from between the rollers of the cable stripper, then open the memory unit, slide the cable adapter into its storage position as shown above, then snap the memory unit closed. 3.
Advance the thumb switch toward the cutting blades until the cable touches the cutting blades. Holding the cable perpendicular to the stripping tool during the entire stripping process, rotate the stripping tool three times. Advance the thumb switch, again rotating the stripper three times. Repeat this process until the thumb switch cannot be advanced any more; then pull thumb switch all the way back, releasing the coaxial cable from the cutting blades. Cable end should have three separate cuts and should appear as follows: CUTS
8332-A
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4.
The stripper will have cut the outer jacket, the braided shield (and foil shield, if present), and the dielectric. Carefully slide the cut pieces of coaxial layers off the end of the cable, exposing each layer. If the cable has a foil shield under the braided shield, remove equal portions of both shields. CABLE CENTER CONDUCTOR (BEFORE TRIMMING)
DIELECTRIC SHIELD(S)
OUTER JACKET
8331-A
5.
Using the crimping hand tool and the center conductor trimming station on the die set, trim the center conductor to length. The stripped, trimmed cable end should then match the diagram shown below: DIELECTRIC
CRIMP SLEEVE CRIMPING STATION CENTER CONDUCTOR TRIMMING STATION
CABLE CENTER CONDUCTOR
OUTER JACKET
CENTER CONDUCTOR CRIMPING STATION
LCC
XXXX
XXXX
LCC
.200 REF 8333-A
6.
SHIELD
.235 REF .47 REF .670 REF
8303-A
Fold back the braided shield; then slide the center pin assembly onto the cable end, over
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the foil shield (if present), until it butts against the edge of the outer jacket. Check that the end of the coaxial cable center conductor is visible through the center pin inspection hole in the center pin assembly. FOIL SHIELD
BRAIDED SHIELD
CABLE BRAIDED SHIELD
CENTER PIN ASSEMBLY
DIELECTRIC
8343-A
CENTER PIN INSPECTION HOLE
8304-B
7.
Using the center conductor crimping station on the die set at the cutaway portion of the center pin assembly, crimp the center conductor. The center pin assembly should now be well attached to the center conductor of the coaxial cable. CENTER PIN ASSEMBLY
CRIMP
8344-A
8.
Fold the braided shield evenly over the end (i.e., ferrule), of the center pin assembly, then slide the crimp sleeve over the braided shield until it butts against the body of the center pin assembly. CABLE CENTER PIN ASSEMBLY
BRAIDED SHIELD
CRIMP SLEEVE
XXX
8305-C
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9.
Using the center (hex) position of the die set, crimp the crimp sleeve onto the braided shield and the ferrule of the center conductor assembly. CRIMPED CRIMPSLEEVE
XXX
8306-B
10.
Slide the connector shell onto the center pin assembly, and screw down until hand tight. XXX
8334-A
11.
Using the two (supplied) tightening wrenches, tighten the connector approximately oneeighth turn (or about 4 to 6 inch-pounds). This completes the installation of the crimp style LCC onto the coaxial cable. XXX
8307-B
Completed Installation
12.
Perform the following LCC termination tests: a. Visually check that the center conductor is centered in the connector shell and that it remains centered with no movement when you wiggle the cable in back of the connector. Also check that no braid can be seen at the back of the connector. b. Using a DC ohmmeter, test for opens or short-circuits in the cable. Check the cable for end-to-end continuity of (a) the center conductor and (b) the cable shield. Also, check for no continuity between the center conductor and the connector shell. c. Perform a Time Domain Reflectometer (TDR) test by patching a TDR to the front IN and OUT jacks of a DSX module while the newly installed LCC connector is plugged into to the rear of the module. d. Finally, perform a digital signal test. While a DS-3 test set is sending and receiving a set pattern, wiggle the cable at the LCC connector; for a proper connection, the test set will detect no bit errors.
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4. SYSTEM INTEGRATION SERVICES ADC offers the following system integration services. For calls originating in the U.S.A. 4.01 or Canada, dial 1-800-366-3891, extension 3000. For calls originating outside the U.S.A. or Canada, dial 612-946-3000. Technical Assistance Center
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Technical Training
• Product Technology • Custom Designed Training
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• Detail Engineering • End-to-End Installation • Drafting Services
5. CUSTOMER SUPPORT SERVICES ADC offers the following customer support services. For calls originating in the U.S.A. 5.01 or Canada, dial 1-800-366-3891, then request the extension listed. For calls originating outside the U.S.A. or Canada, dial 612-946-3000. BCG Technical Assistance Center Extension 3475 E-Mail:
[email protected]
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Sales Administration Extension 3000
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Quotation Proposals Ordering Delivery General Product Information
Product Return Department Extension 3000 E-Mail:
[email protected]
• ADC Return Authorization number and instructions must be obtained before returning products.
Product information and service can also be obtained by writing ADC Telecommunications, 5.02 Inc., P.O. Box 1101, Minneapolis, Minnesota 55440-1101, U.S.A.
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Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period. This publication may be verified at any time by contacting ADC’s Technical Assistance Center at 1-800-366-3891, extension 3223 (in U.S.A. or Canada) or 612-946-3223 (outside U.S.A. and Canada), or by writing to ADC Telecommunications, Inc., Attn: Technical Assistance Center, Mail Station #77, P.O. Box 1101, Minneapolis, MN 55440-1101, U.S.A.
© 1998, ADC Telecommunications, Inc. All Rights Reserved Printed in U.S.A.
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