Download Cisco Systems uBR10-MC5X20H Getting Started Guide

Use an ESD-preventive wrist or ankle
strap during the line card installation.
1 Feature Description
Quick Start Guide
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
MA
INT
uBR10-MC5x20S-D
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STA
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Upstream
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The UCH must be used for all Cisco uBR10MC5X20S/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.
US11
US10
US13
US12
US11
CISCO
10000
CISCO
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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.)
US14
US12
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Step 2
Remove the ESD cap from a cable, and
insert it into the hole in the UCH2. See
Figure 2.
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SRP
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POS
E
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CD
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CD
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RF
OC–48/STM–16 POS/SRP SM–LR
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OC–48/STM–16 POS/SRP SM–LR
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SYNC
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PASS
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Downstream
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CD
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We recommend that the cables be installed
in the UCH as shown in Table 1 and
Table 2.
DS0RF
DS1RF
DS2RF
DS3RF
DS4RF
1 Feature Description
2 Installing the Cables
3 Installing the UCH
The cables come in kits that consist of cable sets
and spare F connectors.
4 Removing the UCH
The MC5X20 dual-shielded cable kit includes:
5 Removing the Cables
• Two 10-bundle MCX to “F” conn., 3–m cables
6 Troubleshooting
• One 5-bundle MCX to “F” conn., 3–m cables
7 Related Documentation
• 28 spare F connectors
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.
The MC5X20 quad-shielded cable kit includes:
Warning
Only trained and qualified
personnel should be allowed to
install, replace, or service this
equipment.
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.
2 Installing the Cables
TX
US11
US0–US9
Step 3
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US10
DS0
US15
Cabling the
Cisco uBR10-MC5X20S/U/H
Cable Interface Line Card with
Universal Cable Holder—UCH2
POWE
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US3
Tools required for cable installation include:
• 1/4-in. slotted screwdriver and T-10 TORX
driver
Also see “Tool Manufacturers and Part Numbers.”
FAIL
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POWE
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FAIL
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FAIL
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POWE
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In European markets only, you must use
the quad-shielded cable kit with the
Cisco uBR10-MC5X20H.
Port—Quad-Shielded Cable Colors
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
uBR10-MC5x20S-D
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Note
Table 2
• 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
DS0–DS4
DS0 to DS4–red, white, blue, green,
yellow, respectively.
155826
Caution
line card accessory kits and spare cards. Or, the
UCH2 is available as a spare.
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).
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3 Installing the UCH
After the cables are installed in the UCH, perform
the following steps to prevent ESD damage to the
line card.
Caution
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.
Before proceeding, remove the protective
sticker covering the line card DS ports.
Make sure that you are grounded using an
ESD-preventive wrist or ankle strap.
Step 1
Attach a jumper cable to the ground point
on the chassis.
Step 2
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
3. Keep test cables as short as possible to limit static
buildup.
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.
Contact Cisco TAC for further information:
(Make sure the lock bar is completely open
or the cables will not release.)
Tool Manufacturers and Part Numbers
Caution
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
Small pin
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Red triangle
Figure 4
Step 3
Figure 5
Be careful not to bend the cables.
Carefully pull the cable out of the hole.
Sliding Open the Lock Bar
Removing the UCH
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Red line
Shroud
US1
US9
US2
Step 5
Step 6
Step 7
Shroud
US3
Large pin
Hold the cables and UCH in place while
finger tightening the leadscrew. Do not
bend the cables at right angles.
Use the flathead screwdriver to tighten the
leadscrew 10 in–lbs, (maximum torque
15 in.-lbs).
2. Verify that the shroud fits snugly against the
faceplate (the cutouts are closed).
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US7
3. Verify that the cables are properly seated and
secure in the UCH.
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Align the end pins with the pin holes in the
faceplate, and guide the UCH onto the
faceplate.
US9
1/4 in. flathead
screwdriver
Check the following:
1. Verify that the lead screw is tight.
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155818
Cutout
Lead screw
6 Troubleshooting
US0
US8
155819
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Cisco Systems
MC5X20 dual-shielded
MC5X20 quad-shielded
UCH2
CAB-RFSW520TPMF=
CAB-RFSW520QTPMF=
CAB-520-UCH2
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
US2
US6
Tool Part Numbers
White Sands Engineering, Inc.
If the UCH does not easily pull away from
the card, loosen the lead screw until it
completely disengages from the faceplate.
US5
http://www.cisco.com/tac
Table 3
4 Removing the UCH
Installing the UCH
Red line
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.
Step 1
155820
Note
Torquing the leadscrew to more than
20 in-lbs can cause the leadscrew to
fail.
5 Removing the Cables
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.
CPT-7538
Quad-shielded F connector CPT-7538Q
strip tool
75–ohm precision miniature
video cable:
Dual-shielded single cable PN–WS940
Quad-shielded five pk
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
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:
http://www.cisco.com/warp/public/44/jump/
cable.shtml