Cisco Systems uBR10-MC5X20H Quick start guide

Cisco Systems
Brand
Cisco Systems
Model
uBR10-MC5X20H
Category
Signal cables
Type
Quick start guide
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Quick Start Guide
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Cabling the
Cisco uBR10-MC5X20S/U/H
Cable Interface Line Card with
Universal Cable Holder—UCH2
1 Feature Description
2 Installing the Cables
3 Installing the UCH
4 Removing the UCH
5 Removing the Cables
6 Troubleshooting
7 Related Documentation
Warning
Only trained and qualified
personnel should be allowed to
install, replace, or service this
equipment.
Caution Use an ESD-preventive wrist or ankle
strap during the line card installation.
1 Feature Description
The Cisco uBR10-MC5X20S, U and H cable
interface line cards use 75–ohm precision video
coax cables and 75–ohm MCX connectors to
connect to the CMTS.
This document describes how to install and remove
cables and the second generation universal cable
holder (UCH2).
Figure 1 shows the cards in a Cisco uBR10012
router.
Figure 1 Cisco uBR10-MC5X20S/U/H Cards
The cables come in kits that consist of cable sets
and spare F connectors.
The MC5X20 dual-shielded cable kit includes:
• Two 10-bundle MCX to “F” conn., 3–m cables
• One 5-bundle MCX to “F” conn., 3–m cables
• 28 spare F connectors
The MC5X20 quad-shielded cable kit includes:
• Five 5-bundle MCX to “F” conn., 3–m cables
• Five spare F connectors
The cable kits do not contain the universal cable
holder (UCH); however, the UCH is available with
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line card accessory kits and spare cards. Or, the
UCH2 is available as a spare.
Note In European markets only, you must use
the quad-shielded cable kit with the
Cisco uBR10-MC5X20H.
Tools required for cable installation include:
• 1/4-in. slotted screwdriver and T-10 TORX
driver
Also see “Tool Manufacturers and Part Numbers.”
2 Installing the Cables
The UCH must be used for all Cisco uBR10-
MC5X20S/U/H line card cable connections.
Failure to use the UCH may cause permanent
damage to the line card connectors and result in
low or no RF output.
Step 1 Loosen the top screws and slide open the
lock bar. (If the UCH2 is already installed
in the line card, use a screwdriver to slide
open the bar. See Figure 5.)
Step 2 Remove the ESD cap from a cable, and
insert it into the hole in the UCH2. See
Figure 2.
We recommend that the cables be installed
in the UCH as shown in Table 1 and
Table 2.
Caution If using quad-shielded cables, make
sure there is no heat-shrink wrap on
the ends by the MCX connectors.
Table 1 Port—Dual-Shielded Cable Colors
US0–US9 US0 to US9–red, white, blue, green,
yellow, violet, orange, black, gray,
brown, respectively.
US10–US19 US10–grey; US11–brown; US12 to
US19–red, white, blue, green, yellow,
violet, orange, black, respectively.
DS0–DS4 DS0 to DS4–red, white, blue, green,
yellow, respectively.
Table 2 Port—Quad-Shielded Cable Colors
Step 3 Insert the cable completely into the UCH.
(The cables will fit loosely in the holes
until the lock bar is closed in Step 5.)
Caution Do not kink the cables.
Figure 2 Inserting a Cable in the UCH2
Step 4 Repeat this procedure for all of the cables.
Step 5 Ensure the cables are fully inserted in the
UCH2 and slide the lock bar closed
completely. (The lock bar will not close if
cables are not fully inserted or properly
aligned.)
Step 6 Using the T-10 TORX driver tool tighten
the screws on the lock bar (maximum
torque—10 in-lbs).
US0–US9 US0 to US9–red, white, blue, green,
yellow, red, white, blue, green, yellow,
respectively.
US10–US19 US10 to US19–red, white, blue, green,
yellow, red, white, blue, green, yellow,
respectively.
DS0–DS4 DS0 to DS4–red, white, blue, green,
yellow, respectively.
155826
3 Installing the UCH
After the cables are installed in the UCH, perform
the following steps to prevent ESD damage to the
line card.
Note Before proceeding, remove the protective
sticker covering the line card DS ports.
Step 1 Make sure that you are grounded using an
ESD-preventive wrist or ankle strap.
Step 2 Attach a jumper cable to the ground point
on the chassis.
Step 3 Briefly touch each cable’s center connector
with the jumper cable to remove any
built-up ESD potential.
Step 4 Position the UCH2 so the red line is on the
same side as the red triangle on the
faceplate.
Figure 3 Installing the UCH
Step 5 Align the end pins with the pin holes in the
faceplate, and guide the UCH onto the
faceplate.
Step 6 Hold the cables and UCH in place while
finger tightening the leadscrew. Do not
bend the cables at right angles.
Step 7 Use the flathead screwdriver to tighten the
leadscrew 10 in–lbs, (maximum torque
15 in.-lbs).
155818
US0
US1
US2
US3
US4
US5
US6
US7
US8
US9
Lead screw
Red triangle
Small pin
Shroud
Large pin
Red line
Cutout
Caution Torquing the leadscrew to more than
20 in-lbs can cause the leadscrew to
fail.
The UCH is fully engaged when the
semi-circles on the shroud show metal and
the red and black lines are completely
covered. See Figure 3.
4 Removing the UCH
Step 1 Make sure that you are grounded using an
ESD-preventive wrist or ankle strap.
Step 2 Loosen the lead screw (counterclockwise)
until it disengages from the faceplate.
Step 3 Gently pull the UCH straight away from
the faceplate.
Note If the UCH does not easily pull away from
the card, loosen the lead screw until it
completely disengages from the faceplate.
Figure 4 Removing the UCH
US0
US1
US2
US3
US4
US5
US6
US7
US8
US9
155819
Red line
Shroud
1/4 in. flathead
screwdriver
5 Removing the Cables
Step 1 Use the T-10 TORX driver tool to loosen
the lock bar on the side you want to
remove cables.
Step 2 Slide the lock bar open by hand, or with a
flathead screwdriver if the bar is stuck or
hard to access. See Figure 5.
(Make sure the lock bar is completely open
or the cables will not release.)
Caution Be careful not to bend the cables.
Step 3 Carefully pull the cable out of the hole.
Figure 5 Sliding Open the Lock Bar
6 Troubleshooting
Check the following:
1. Verify that the lead screw is tight.
2. Verify that the shroud fits snugly against the
faceplate (the cutouts are closed).
3. Verify that the cables are properly seated and
secure in the UCH.
If downstream RF power measurements are made, use
these ESD precautions to prevent damage to the
product:
1. Check for a proper ground on the equipment and
chassis before connecting any cables.
2. Ensure that there is a common ground between all
the test equipment that you are using and the unit
under test.
155820
3. Keep test cables as short as possible to limit static
buildup.
4. Before attaching any test cables to the unit under
test, momentarily ground the center pin of the test
cable to remove any ESD potential that may be
present.
Contact Cisco TAC for further information:
http://www.cisco.com/tac
Tool Manufacturers and Part Numbers
7 Related Documentation
• Cisco uBR10-MC5X20S/U/H Cable Interface
Line Card for the Cisco uBR10012 Router:
http://www.cisco.com/univercd/cc/td/doc/
product/cable/ubr10k/ubr10012/frus/
index.htm
• More Cisco cable products information:
Table 3 Tool Part Numbers
Cisco Systems
MC5X20 dual-shielded
MC5X20 quad-shielded
UCH2
CAB-RFSW520TPMF=
CAB-RFSW520QTPMF=
CAB-520-UCH2
White Sands Engineering, Inc.
F and MCX crimper tool PN–ACT-483
MCX connector strip tool:
Dual-shielded cables
Quad-shielded cables
PN–CPT-7538-125
PN–CPT-7538-200Q
Dual-shielded F connector
strip tool
Quad-shielded F connector
strip tool
CPT-7538
CPT-7538Q
75–ohm precision miniature
video cable:
Dual-shielded single cable
Quad-shielded five pk
PN–WS940
PN–WS386
MCX fixed pin conn.:
Dual-shielded cable
Quad-shielded cable
PN–MCXFP
PN–MCXFPQ
F conn.:
Dual-shielded cable
Quad-shielded cable
PN–ASFP
PN–ASFPQ
http://www.cisco.com/warp/public/44/jump/
cable.shtml
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Cisco Systems uBR10-MC5X20H Quick start guide

Cisco Systems
Brand
Cisco Systems
Model
uBR10-MC5X20H
Category
Signal cables
Type
Quick start guide
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