COMMSCOPE APT-HFHM-CB Surge Arrestors for 4.3/10 Interface Types Instruction Manual

: June 1, 2024
: CommScope

Table of Contents

COMMSCOPE APT-HFHM-CB Surge Arrestors for 4.3/10 Interface Types
Description
Installation
Microwave Performance Testing
Surge Performance Testing
Documents / Resources

COMMSCOPE APT-HFHM-CB Surge Arrestors for 4.3/10 Interface Types

COMMSCOPE-APT-HFHM-CB-Surge-Arrestors-for-4-3-10-Interface-Types-product-
image

Specifications

Product: Surge Arrestors for Types 4.3/10 Interfaces
Description: Designed to protect equipment from damaging transients induced by lightning strikes. Available for use in several frequency bands and interface combinations. Operating bandwidth specified on each arrestor.

Installation Instructions

Installation
The arrestor is a bidirectional RF device. Connect either RF port to the equipment side or antenna side of the transmission line interface for equivalent protection. Do not expose RF ports in outdoor applications.
Grounding: Attach arrestor grounding stud to a master ground bar or system’s earth ground ring for low impedance path to ground. Ensure all grounding contact surfaces are clean, dry, and free of oxidation.
Note: Surge arrestors installed outdoors in areas of severe industrial pollution must be wrapped with weatherproofing tape to prevent corrosion.
Microwave Performance Testing
Test microwave performance using a network analyzer. VSWR and insertion loss specified for operating bandwidth. Fault location testing can be done using a vector network analyzer with time domain capability (Frequency Domain Reflectometry).
Surge Performance Testing
Surge Arrestors use reliable quarter-wave technology without expendable devices needing periodic maintenance.
Maintenance
Qualified personnel should handle installation, maintenance, or removal of antenna systems. Inspect antenna systems annually for proper installation, maintenance, and equipment condition.

Commscope disclaims liability for improper or unsafe installation practices.

FAQ

Q: How often should surge arrestors be inspected?
A: Surge arrestors should be inspected annually by qualified personnel to ensure proper functioning and protection.

Installation Instructions

Surge Arrestors
for Types 4.3/10 Interfaces
Bulletin 7828009 Revision C Page 1 of 1
CommScope Infrastructure Academy offers installation training

Description

Surge Arrestors are designed to protect equipment from damaging transients induced by lightning strikes. These arrestors are available for use in several frequency bands and a variety of interface combinations. The operating bandwidth is specified on each arrestor.

Installation

The arrestor is a bidirectional RF device. Thus either RF port may be connected to the equipment side or the antenna side of the transmission line interface to provide equivalent protection. Do not leave the Surge Arrestor RF ports exposed in outdoor applications.
The arrestor grounding stud must be attached to a master ground bar or the system’s earth ground ring to ensure a low impedance path to ground.
During installation, all grounding contact surfaces must be clean, dry, and free of oxidation.
Note: To prevent corrosion near areas of severe industrial pollution, surge arrestors installed outdoors must be wrapped with weatherproofing tape. $COMMSCOPE-APT-HFHM-CB-Surge-Arrestors-for-4-3-10-Interface-Types-fig- $1$$

Microwave Performance Testing

Surge Arrestors can be readily tested for microwave performance using any network analyzer. VSWR (return loss) and insertion loss are specified for the operating bandwidth only. Fault location testing can be performed through the arrestor with the appropriate test equipment; that is, a vector network analyzer with time domain capability. Some test equipment manufacturers refer to this type of fault location testing as Frequency Domain Reflectometry (FDR).

Surge Performance Testing

Surge Arrestors are constructed using extremely reliable quarter-wave technology and do not contain expendable devices that require periodic maintenance.

Notice

The installation, maintenance, or removal of antenna systems requires qualified, experienced personnel. CommScope installation instructions are written for such personnel. Antenna systems should be inspected once a year by qualified personnel to verify proper installation, maintenance, and condition of equipment.
Commscope disclaims any liability or responsibility for the results of improper or unsafe installation practices.

$COMMSCOPE-APT-HFHM-CB-Surge-Arrestors-for-4-3-10-Interface-Types-fig- $2$$

PN| Interface type| Interface Tightening torque| Grounding Screw/Nuts| Grounding Screw/Nuts Tightening torque
---|---|---|---|---
APT-HFHM| 4.3-10| 5-10 N•m| M8*1.25 Nut| 12-18 N•m
APT-HFHM-CB| 4.3-10| 5-10 N•m| M5 Phillips Screw| 2.3-2.9 N•m

CommScope
3642 E US Highway 70, Claremont, NC 28610 USA
828-324-2200 (800) 982-1708
www.commscope.com

Customer Service 24 hours
North America: +1-800-255-1479 (toll free)
Any country: +1-779-435-6500
email: accustomersupportcenter@commscope.com

Notice: CommScope disclaims any liability or responsibility for the results of improper or unsafe installation, inspection, maintenance, or removal practices.

© Feb, 2024 CommScope

Documents / Resources

| COMMSCOPE APT-HFHM-CB Surge Arrestors for 4.3/10 Interface Types [pdf] Instruction Manual
APT-HFHM-CB Surge Arrestors for 4.3 10 Interface Types, APT-HFHM-CB, Surge Arrestors for 4.3 10 Interface Types, Arrestors for 4.3 10 Interface Types, Interface Types
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