Quick Installation Sheet | CMA-607-AEN | Page 1Corning Optical Communications

1. ITEMS REQUIRED FOR IFB INSTALLATIONThe following kits and included items are required for installing the IFB. If any of the listed items are missing, contact your Corning representative.

Item Qty ImageIFB (P/N: AK-ONE-HE-GX-INTBOX) 1

DC Terminal Block; two pole with screw for wire (Manufacturing PN: Dinkle MP/N 2ESDV-02P)

Note: The DC terminal blocks are pre-inserted into the units’ DC connectors.

1

QMA 50 Ohm RF load terminations (RF connections are preterminated)

25

ERFCv2-OCH — RF Cables used for interfacing between headend (i.e., HEU/IHU) RF extender module (RIX) and IFB; includes three pairs of UL/DL QMA cables and one QMA cable 10 MHz sync cable; Length = 2 m

1

GENERAL INFORMATION• The IFB is a combiner/splitter unit that combines services from two HEUs/IHUs and interfaces between the headend units

and GX remotes via the optical central hubs (OCHs).

• The IFB includes an integrated clock unit (pilot) required for the TDD band supported by the GX dual-band WCS/2.5 GHz TDD remote.

• The unit is installed in a 19-in rack with the headend and OCH units.

• Number of supported OCH optical modules per service group — six OCH-4-WDMs or three OCH-8-WDMs.

This document describes how to install the IFB and perform the connections towards the headend unit(s) and the OCHs.

Table 1. IFB Kit Items

CMA-607-AEN

Headend Unit-to-GX Interface Box (IFB)Assembly Quick Installation Sheet

Quick Installation Sheet | CMA-607-AEN | Page 2Corning Optical Communications

2. ADDITIONAL REQUIRED ITEMS The IFB includes 12 QMA output ports which interface to the OCHs. QMA/QMA cables are not provided with the IFB.

Corning QMA/QMA cable accessory kits are available and can be ordered separately.

Cable Accessory Kits

AK-RIU4-OCH-CABLES – Cable Accessory Kit; includes four QMA-to-QMA R/A cables; Length = 1 m

AK-RIU12-OCH-CABLES – Cable Accessory Kit; includes four QMA-to-QMA R/A cables; Length = 1 m

Table 2. Cable Accessory Kits

Figure 1. Example of Location of Units in 19-in Rack

3. MOUNT IFB IN 19-IN RACK

Step 1: Determine the location of the unit in the rack. Note: Keep in mind the length of the ERFCv2-OCH

cables and the QMA/QMA cables connecting to the OCH rear panel input ports. See Figure 1 for example of rack configuration.

Step 2: Install the IFB (1U) into the 19-in rack and, using the preassembled rack brackets, secure the unit in place with appropriate rack screws (two for each bracket).

4. GROUNDING

The grounding connection is performed via two screws located on the IFB rear panel.

Required tools and components

The following additional (not supplied) tools and components are required for connecting the system ground:

• Grounding wire and two-hole lug. The grounding wire should be sized according to local and national installation requirements. The size of the provided grounding screws is 1/4-in supporting 18 AWG cable. Note: The length of the grounding wire depends on the proximity of the switch to proper grounding facilities.

• Wire-stripping tool to remove the insulation from the grounding wire

Step 1: Use a wire-stripping tool to remove approximately 0.4 in (10.9 mm) of the covering from the end of the grounding wire.

Step 2: Insert the stripped end of the grounding wire into the open end of the grounding lug.

Step 3: Crimp the grounding wire in the barrel of the grounding lug. Verify that the ground wire is securely attached to the ground lug by holding the ground lug and gently pulling on the ground wire.

Step 4: Prepare the other end of the grounding wire and connect it to an appropriate grounding point at the site to ensure adequate earth ground.

Figure 2. IFB Side Panel with Rack Bracket

Figure 3. IFB Rear Panel — Grounding Screws

Quick Installation Sheet | CMA-607-AEN | Page 3Corning Optical Communications

Figure 4. DC Wiring Connections

5. DC WIRING CONNECTIONS

Power input voltage: -40 V to -58 V

• Maximum current: 0.3 A

• Consumption power: 12 W

Step 1: Identify the positive and negative terminals on the feed positions as indicated on the”Main Power” connector. The wiring sequence is positive to positive and negative to negative as shown in Figure 4.

Step 2: Open the terminal block screw above the negative feed position and then insert the exposed black wire (negative feed) into the terminal block.

Step 3: Torque the terminal block captive screw (above the installed wire lead) using a ratcheting torque screwdriver. Recommended torque is 0.51 N•m.

CAUTION! Secure the wires coming in from the terminal block so that they cannot be disturbed by casual contact. For example, use tie wraps to secure the wires to the rack.

Step 4: Connect the DC wiring to the DC power source.

6. IFB-TO-HEU/IHU CONNECTIONS

Refer to Figure 5 and connect the HEU(s) to the IFB using the ERFCv2-OCH cable as follows:

Note: Each ERFCv2-OCH cable supports UL/DL connections to up to three service group input connections and one 10 MHz reference clock connection.

Step 1: Connect the 9-pin connector side of the ERFCv2-OCH cable to an available HEU/IHU RIX port and secure the connector in place.

Step 2: UL/DL QMA connections — connect a pair of UL/DL QMA cables to each of the IFB UL/DL service group input ports (i.e., SG1, SG2, and SG3).

Step 3: Connect the single QMA connection cable to the IFB 10 MHz QMA port.

Step 4: Perform Steps 1-2 above for second HEU if installed (only one 10 MHz clock reference connection to the IFB is required).

Step 5: Make sure that any unused ports are terminated with the QMA 50 Ohm RF load terminations.

Figure 5. Example of Connections between IFB and Two HEUs via ERFCv2 Cables

Corning Optical Communications LLC • PO Box 489 • Hickory, NC 28603-0489 USA800-743-2675 • FAX: 828-325-5060 • International: +1-828-901-5000 • www.corning.com/opcommCorning Optical Communications reserves the right to improve, enhance, and modify the features and specifications of Corning Optical Communications products without prior notification. A complete listing of the trademarks of Corning Optical Communications is available at www.corning.com/opcomm/trademarks. All other trademarks are the properties of their respective owners. Corning Optical Communications is ISO 9001 certified. © 2017 Corning Optical Communications. All rights reserved. CMA-607-AEN / December 2017

P/N 709C022001 Rev A00

7. IFB-TO-OCH CONNECTIONS

Notes: • The IFB output connections to the OCH are performed using QMA/QMA cables (not provided with unit).

• Each IFB supports two optical modules (i.e., one OCH-8 or two OCH-4 units) per service group.

Refer to Figure 6 and connect the IFB to the OCH as follows:

UL/DL QMA connections — connect a pair of QMA/QMA cables from each of the service group UL and DL output ports to the OCH optical module UL and DL link ports. IFB supports connections to two optical modules per service group.

IMPORTANT! Make sure that any unused ports are terminated with the QMA 50 Ohm RF load terminations.

8. VERIFY NORMAL OPERATION

Refer to IFB LEDs and verify normal operation.

Figure 6. Connections Between IFB and Three OCH-8 Units

LED Description

ALM LED Green — TDD sync lockedRed — TDD sync unlocked

PWR LED Green — power input detectedOff — no power

Table 3. IFB LED Descriptions