CommScope NOVUX DSC 650 User manual

Installation Instructions
page 1 / 23
© 2023 CommScope, Inc. All Rights Reserved
NOVUX™ Fiber Optic System
TC-1554-IP
Rev. D, August 2023
http://www.commscope.com
DSC 650
1 About this manual
This manual describes the installation steps of the Dome Splice Closure 650. The document starts with providing an
overview of the tools required to perform the installation. Also warnings and cautions are indicated, which should be
observed before starting the product installation.
Images in this manual are for reference only and are subject to change.
2 General product information
2.1 Dimensions
13.6 Inches
345 mm
35.45 Inches
900 mm
13.6 Inches
345 mm
41.4 Inches
1050 mm
Handle (x4)
Mounting Holes
Gel Block Collar
Mounting Holes (x4)
External Bracket
Latch (x4)
Small Gel Block Ports
Large Gel Block Port
Through Lugs
Ground Feed

2.2 Cable diameter range
See the figure/table below to determine which cable diameter can be used in combination with which port/gel block.
.
Small
gel block
port
Large
gel block
port
Small
gel block
port
Small gel blocks
Cable Attachment Bracket
Cable Attachment Bracket
Small 3-Pos. Small 4-Pos.
3-way 4-way
Large 4-Pos.
Large gel block
4-way
Small
Cable Ports
Large
Cable Port(s)
Gel Blocks # Ports Cable Outside Diameter
Min. - Max. # Ports Cable Outside Diameter Min. - Max.
Small 3-way
28 - 20 mm
0.32 - 0.79 inch 125 - 35 mm 1.0 - 1.38 inches
Small 4-way
28 - 22 mm
0.32 - 0.87 inch 210 - 28 mm 0.39 - 1.1 inches
Large 4-way
218 - 25 mm
0.7 - 1.0 inch 225 - 40 mm 1.0 - 1.6 inches
Note: Regarding the small 4-way cable gel block: if both lower cable ports have cable diameters greater than 26
mm / 1 inch, then the maximum cable diameter in the upper cable ports will be 20 mm / 0.79 inches.
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© 2023 CommScope, Inc. All Rights Reserved

Contents
Contents1 About this manual............................................................................. 1
2 General product information........................................................... 1
2.1 Dimensions.........................................................................................................1
2.2 Cable diameter range.................................................................................... 2
3 Abbreviations..................................................................................... 4
4 Tools.................................................................................................... 4
5 Warnings and Cautions..................................................................... 4
6 Open the closure................................................................................4
7 Closure preparation........................................................................... 5
7.1 Tray support tower..........................................................................................5
7.2 Cable attachments assembly...................................................................... 5
8 Cable preparation.............................................................................. 6
8.1 Remove Jacket.................................................................................................. 6
8.2 Strength member fixation............................................................................ 7
9 Cable installation............................................................................... 8
10 Routing............................................................................................. 9
10.1 Preparation...................................................................................................... 9
10.2 Route in basket............................................................................................10
11 Trays................................................................................................12
11.1 General product information................................................................. 12
11.2 Tray dimensions.......................................................................................... 12
11.3 Tray installation........................................................................................... 12
11.4 Tray support..................................................................................................13
11.5 Route on tray................................................................................................13
11.6 Splice Fibers and Store on Trays...........................................................14
12 Gel blocks....................................................................................... 14
12.1 Install gel blocks......................................................................................... 15
13 Close the closure........................................................................... 17
14 Testing the Closure Seal............................................................... 17
15 Grounding...................................................................................... 18
16 External cable fixation..................................................................19
16.1 External cable fixation kit content........................................................19
16.2 Installation external cable fixation bracket.......................................19
17 Mount the closure.........................................................................20
17.1 Wall mounting............................................................................................. 20
17.2 Aerial mounting.......................................................................................... 21
18 Disclaimer.......................................................................................23
19 Contact information......................................................................23
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© 2023 CommScope, Inc. All Rights Reserved

3 Abbreviations
DSC: Dome Splice Closure
4 Tools
Optional
5 Warnings and Cautions
R
• Follow the installation instruction steps to ensure the performance of the closure. It is necessary to take
precautions and keep the working space clean to protect the closure sealing materials and splices.
• Exposure to laser radiation can seriously damage the retina of the eye. Do not look into the ends of any optical
fiber. Do not assume the laser power is turned off or that the fiber is disconnected at the other end. Looking into
the ends of any optical fiber is entirely at your own risk. A protective cap or hood MUST be immediately placed
over any radiating adapter or optical fiber connector to avoid the potential of dangerous amounts of radiation
exposure. This practice also prevents dirt particles from entering the connector and adapter.
• Fiber optic cables may be damaged if bent or curved to a radius that is less than the recommended minimum bend
radius. Always observe the recommended bend radius limit when installing fiber optic cables, subunits and patch
cords.
6 Open the closure
1
2
1
2
3
1 Open the latch by pulling downwards.
2 Then turn the latch down.
3 Open the 4 latches and lift the dome away from the base and set aside until the end of the installation.
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© 2023 CommScope, Inc. All Rights Reserved

7 Closure preparation
7.1 Tray support tower
7.1.1 Tower positioning and displacement
1
2
3
1 The tray tower is factory installed in one of two orientations depending on part number configuration. The tray
tower orientation can be changed to align with the gel block ports being utilized. The tray tower should be
installed between the two utilized ports for easier fiber routing.
2 To change the tray tower orientation, remove the 3 bolts holding the tower in place. Move the tower to the position
between the two utilized ports.
3 Secure the tower with the 3 bolts.
7.1.2 Open tower
The tower has a closed construction. It is possible to open it to facilitate guiding fibers under the tower.
1
2
3
7.2 Cable attachments assembly
7.2.1 Overview
There are 3 cable attachment assemblies available.
• 2 cable attachment assemblies for use with the small gel block ports (3 or 4 cable attachments)
• 1 cable attachment assembly for use with the large gel block port (4 cable attachments)
Small 3-Pos.
Cable Attachment
Small 4-Pos.
Cable Attachment
Large 4-Pos.
Cable Attachment
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© 2023 CommScope, Inc. All Rights Reserved

7.2.2 Cable attachment assembly installation
Two cable attachment assemblies can be installed on the tray support tower. To use the full capacity of the closure, a
third cable attachment assembly can be installed in the closure with an additional support bracket.
1
2
3
1 Remove the two pins that hold the cable attachment assembly in place.
2 Remove the top cable attachment assembly.
3 Install the bottom cable attachment assembly on the tray support tower with 2 screws.
4
5
6
4 When the tower is installed between the 2 small ports, install 2 small cable attachment assemblies on the tray
support tower.
5 If applicable, install a 3rd cable attachment assembly on the additional support bracket.
6 Install the support bracket with the cable attachment assembly with 3 bolts between the 2 small gel block ports in
the closure.
8 Cable preparation
Strength Member lengths
Cable Type Opening
Location
Min. & Max. Suggested
Storage Length Small Large XC
Loose Buffer Tube
Loose Buffer Tube Ribbon
Central Core Tube Ribbon
Stub end
and
Midspan
300 cm ± 5 cm / 120 ±2 Inches
31 mm
1-1/4
inches
44 mm
1-3/4
inches
80 mm
3.2 inches
Note: Midspan can be used for up to 1728 fibers, contact technical support for more information.
8.1 Remove Jacket
300 cm
120 Inches
1 Remove the cable jacket over a length of 300 cm / 120 Inches.
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© 2023 CommScope, Inc. All Rights Reserved

8.2 Strength member fixation
There are three sizes of strength member attachment brackets and lugs in the kit. Use the large attachment bracket and
lug (2) for strength members with diameters over 6,35 mm / 0.25 inches, and the small strength member attachment
bracket and lug (1) for smaller strength member. The XC bracket and lug (3) is for use with cable diameter 40 mm / 1.6
inches. The small and large strength member attachment brackets have 3 prongs on one end. The central prong is for
use with central strength members. For dual strength members, use the two outer prongs
Small bracket (1) large bracket (2) XC-bracket (3)
mm Inches mm Inches mm Inches
Strength member diame-
ter < 6,35 < 0.25 > 6,35 > 0.25 Cable Ø 40 mm / 1.6 inches
Strength member length 31 1-1/4 44 1-3/4 80 3.2
1
1-1/4 Inches
31 mm
Top view
Side view
2
44 mm
1-3/4 Inches
Top view
Side view
3
80 mm
3.2 Inches
15 mm
0.6 Inches
Top view
Side view
1 If using the small strength member attachment bracket (1), trim the strength member to 31 mm / 1-1/4 Inches
length from the ring cut and secure the strength member on the bracket with the small lug(s).
Note: If needed, remove the unused prongs of the strength member bracket by using pliers to bend them sharply
away from the cable and out of the way.
2 If using the larger strength member attachment bracket (2), trim the strength member to 44 mm / 1-3/4 Inches
length from the ring cut and secure the strength member on the bracket with the appropriate lug.
Note: If needed, remove the unused prongs of the strength member bracket by using pliers to bend them sharply
away from the cable and out of the way.
3 If using the extra large strength member attachment bracket (3), trim the strength member to 80 mm / 3.2 Inches
length from the ring cut. If the diameter of the strength member is too large for the lug, then remove 15mm / 0.6
inches of sheathing from the end of the strength member. Secure the strength member on the bracket with the
appropriate lug.
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© 2023 CommScope, Inc. All Rights Reserved

9 Cable installation
Important: Slide the gel seal collar over the cables to be installed. Make sure the cables always go through the gel
seal collar before inserting through the port on the base.
1
2
3
1 Insert the cable with the strength member attachment bracket installed through the gel seal collar and into the
port on the base.
Important: For armored cables, refer to chapter 15 Grounding on page 18.
2 Install the strength member bracket into the bottom cable attachment assembly by pushing the metal tab into the
slot. If an alligator clip is used for grounding, make sure that strength member bracket and grounding attachment
are on opposite sides.
3 Adjust the sheath retention clips until they grip the cable sheath. Wrap a hose clamp around the sheath retention
clips and cable and use a 1/4-inch nut driver to tighten the hose clamp in place. Tighten the clamp such that the
retention teeth fully seat into the cable assembly. Do not over-tighten the clamp.
Note: The sheath retention clips should not extend past the ring cut of the cable.
Note: Position the hose clamp bolts to the sides of the cable. They could become trapped between the cables and
the closure or interfere with upper cable attachments if left on the top or bottom.
Note: For cable with no rigid strength member, the strength member attachment is not required.
page 8 / 23
© 2023 CommScope, Inc. All Rights Reserved

4
5
4 Re-install “top” cable attachment assembly onto “bottom” cable attachment assembly and secure in place with the
two pins.
5 If required, cables can be installed in the “top” cable attachment assembly.
10 Routing
10.1 Preparation
Note: Below is an example of cable preparation using a mesh tubing kit (ordered separately). Other prescribed
practices may be available per local practice.
85 mm
3.4 Inches
1 Ring cut buffer tubes at 85 mm / 3.4 Inches from cable sheath ring cut.
100 cm
86 cm
40 Inches
34 Inches
2 Slide a piece of the big mesh tube (Length: 100 cm / 40 inches - Diameter: 31.75 mm / 1.25 inches) over the entire
group of buffer tubes and a small mesh tube (Diameter: 9,53 mm / 3/8 inch) with a length of 86 cm / 34 inches
over each buffer tube.
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© 2023 CommScope, Inc. All Rights Reserved

10 cm / 4 Inches
3 Slide back the loose buffer tubes and slide the big mesh tube toward the ring cut to, just above the cable clamp
point. Secure with a cable tie. Slide the small mesh tubes into the big mesh tube with an overlap of 10 cm / 4
Inches.
4 Remove each loose buffer tube and slide a fiber sleeve and a small section of the buffer tube (20 cm / 8 inches)
back over the fibers for color identification. Slide the fiber sleeve into the small mesh tube and secure with 1 wrap
of tape.
Note: Finish the tubes one by one making sure tubing colors are kept in order.
5 Repeat for all tubes.
Store in Basket
Store on tray
6 The transition of the big mesh tube to the small mesh tube will be stored in the basket.
10.2 Route in basket
1a
Basket
1b
Splice Tray
S1
S2
1
a When routing two cables into the same side of the closure, route the first cable into one side of the basket and
around to the opposite side.
b Then route the tubes/fibers out of the basket, going underneath the tray tower and up to the splice tray area
on the S2 side (same side as cable entry).
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© 2023 CommScope, Inc. All Rights Reserved

2a
2b
S1
S2
2
a Route the second cable into the same side of the basket and make an S-turn in the basket.
b Then route the tubes/fibers out of the basket, going underneath the tray tower and up to the splice tray area
on the S1 side (opposite side of cable entry).
3a
3b
A
B
S1
S2
S1
S2
B-Section
A-Section
Buffer Tube
Cable
Ties
3 At the entrance to the splice tray, secure the end of the mesh tubing with the fiber sleeve underneath to the tray
with 2 cable ties.
Note: Make sure the transition between the big and small mesh tubes is in the basket.
4a
4b
S1
S2
4 When all tubes are routed, ensure the big mesh is secured with a cable tie over the sheath retention clips and
secure the transition of the big and small mesh tubing in the basket with Velcro.
page 11 / 23
© 2023 CommScope, Inc. All Rights Reserved

11 Trays
11.1 General product information
DSC 650 supports up to twelve hinged splice trays dependent on type. Capacity per tray is dependent upon the style
of tray. DSC 650 splice trays have a maximum capacity of 576 ribbon fibers. This capacity is achieved by using 4 splice
modules per tray. Each module has 6 splice positions and each position holds up to 2 ribbon sleeves.
Note: FOSC D size trays can be installed into the DSC 650 as well. Refer to the FOSC D tray installation manual for
more information.
Note: For flat matrix ribbon store fiber slack in basket or use FOSC D double height tray to store slack in tray.
11.2 Tray dimensions
210 mm
387 mm
15.25 Inches
8.25 Inches
11.3 Tray installation
1
2
3
1 Hold the tray vertically over the tray holder bracket.
2 Insert the tray hinge into the first slot on the tray holder bracket and lower the tray. Repeat this procedure to add
the other trays.
3 To remove splice trays from the closure base, raise the tray. Pull the tray hinge out of the tray holder bracket,
releasing the tray.
page 12 / 23
© 2023 CommScope, Inc. All Rights Reserved

11.4 Tray support
1
2
3
1 The tray includes a tray support latch to lock the tray in a raised position.
2 Lift the tray and lock it in position by sliding down the tray support latch. To unlock the tray, slide the tray support
latch up and lower the tray.
3 To regain access to a lower tray, all trays above it must be individually locked in the open position. Start by locking
the top tray, then lock the lower ones until the lower tray is reached.
11.5 Route on tray
1
A
B
S1
S2
1 The tray has 2 splice zones, A and B. Left side (S1) is typically for the drop fibers. Right side (S2) is typically for the
feeder fibers.
S1
S2
A
B
2
A
B
S1
S2
3
A
B
S1
S2
4
2 Route the small braided tubes from the feeder cable through the basket to the S2 side of the tray. Secure the
braided tube to the tray with the fiber sleeve and 2 cable ties. Slide the colored tube against the fiber sleeve. Adjust
the length of the colored buffer tube going to the B section of the tray to 4 cm / 1.6 inches. Store the fibers in
sections A and B.
page 13 / 23
© 2023 CommScope, Inc. All Rights Reserved

3 Route the small braided tubes from the drop cable through the basket to the S2 side of the tray. Secure the braided
tube to the tray with the fiber sleeve and 2 cable ties. Slide the colored tube against the fiber sleeve. Adjust the
length of the colored buffer tube going to the B section of the tray to 4 cm / 1.6 inches. Store the fibers in the
sections A and B.
4 Picture 4 shows the feeder and drop fibers stored and ready for splicing.
11.6 Splice Fibers and Store on Trays
Fiber splicing should be done in compliance with company approved practices. This section outlines some basic splice
organizing techniques to be followed.
1 Always begin splicing with the bottom tray. Lift the remaining trays and secure all of them with the tray support
latch.
2 Remove all stored and unspliced fibers from the tray and clean those that will be spliced. Refer to the splice
manufacturer’s instructions for directions on fiber splicing.
3 Store the first completed splice in the top splice slot (the slot farthest from the hinge). Coil the slack loops around
the respective tray sections (A or B) in an orderly fashion. The splice modules can be moved or removed to
accommodate most splice arrangements.
Note: Make sure all fibers are routed under the tray fingers.
4 When all the splices in the tray are stored, replace the clear plastic tray cover.
5a
5b
5 Secure all trays to the basket with the fastener straps.
12 Gel blocks
Small gel blocks Large gel block
page 14 / 23
© 2023 CommScope, Inc. All Rights Reserved

12.1 Install gel blocks
Small 4-way gel block
1
2
3
4
5
Large 4-way gel block
1
2
3
4
5
1 Unlock and open the gel block assembly.
2 Place the gel block assembly between the cables with the tail centered.
3 Close and lock the assembly.
4 Place the gel block collar bolts into their base mounting positions prior to installing each gel block collar. Leave
room for collar eyelets to rotate under each bolt head. Slide the gel block collar into position by pressing collar
onto base and rotating counter clockwise until eyelet wall is firmly against the collar bolts.
5 Hand tighten all bolts. If using a torque wrench do not exceed 25 in. lbs. All bolts must be seated in the center of
their corresponding eyelet.
page 15 / 23
© 2023 CommScope, Inc. All Rights Reserved

6
7
8
6 Pull the gel block into position.
7 The small gel blocks are in place when the gel block tab pops out.
8 The large gel block is in place when it touches the end of the gel seal collar.
Note: The external bracket needs to be installed to secure the large gel block cables. See chapter 16 External cable
fixation on page 19 for the installation steps.
9
9 Insert one cable port plug into each empty cable port.
10
10 Twist the "tail" of each gel block clockwise to seal cables (The tail can bend away from cables). When the tail
reaches its physical stop, the seal is complete. Insert a screwdriver through the loop in the tail, or use a Crescent
wrench to apply extra torque, if required.
Note: Do not over-tighten or use a drill to turn the tail as this could cause damage to the gel seal.
page 16 / 23
© 2023 CommScope, Inc. All Rights Reserved

13 Close the closure
1
2
1
2
3
1
2
3
4
1 Make sure that the rubber gasket in the base of the closure is clean and seated in the groove. Slide the dome over
the fiber management system and back onto the base.
2 Lift the latch and place the hook over the rim of the dome. Close the latch.
3 Close the 4 latches crosswise 2 by 2. First at the back and front, then left and right. This will ensures an even
pressure distribution on the sealing ring.
4
4 Install a cover on unused gel block ports.
14 Testing the Closure Seal
Pressure test the closure with no more than 5 psi. Thoroughly soap all seals and the valve to check for seal integrity.
Note: After flash testing, release the pressure from the closure through the valve.
page 17 / 23
© 2023 CommScope, Inc. All Rights Reserved

15 Grounding
Note: Follow local practice for bonding and grounding procedures.
1
0.75 Inch
19 mm
2
3
1 If a shield is present in the cable, tab the cable 19 mm / ¾ inch from the sheath ring cut.
2 Attach a supplied bond wire to the tab with the alligator clamp over the sheath and armor. Crimp the alligator
clamp onto the sheath and armor with a pliers.
3 Tape the bonding wire in place and proceed cable installation as explained in the basic installation instructions.
4
5
4 After installation of the cable in the closure, attach the grounding wire to the ground feed through lug inside the
closure. Tighten the nut with a socket wrench up to 40 lb-in of torque.
Note: If isolated grounding is required, the common ground plate can be removed on the outside of the closure.
5 The external grounding needs to be attached at the outside of the closure. (External grounding cable is not
included in the kit.)
page 18 / 23
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16 External cable fixation
Note: The external cable fixation bracket is only needed when installing cables into the large ports on the large gel
block.
16.1 External cable fixation kit content
2
13
N° Description Qty
1 External cable fixation bracket 1
2 Screws 4
3 Hose clamps 2
16.2 Installation external cable fixation bracket
1
2
3
1 Install the external cable fixation bracket on the base with the 4 screws.
2 Secure the cable to the bracket with the hose clamp.
3 Position hose clamps so as to not interfere with future cables.
page 19 / 23
© 2023 CommScope, Inc. All Rights Reserved

17 Mount the closure
17.1 Wall mounting
17.1.1 Wall mounting kit
2
1
3
5
4
N° Description Qty
1 Base wall plate 1
2 Top mounting plate 1
3 Bolts 2
4 Nuts 2
5 Washers 2
Note: Mounting hardware (such as screws, plugs, washers) should be selected according to intended mounting
surface (not included in the kit).
17.1.2 Install Mounting bracket
1
2
3
1 Mount the top mounting plate on the top of the dome.
2 Mount the base mounting plate to a wall and insert the handle of the dome closure into the base mounting plate.
3 Secure the top base plate to the wall.
page 20 / 23
© 2023 CommScope, Inc. All Rights Reserved