User's Guide

Troubleshooting: Accessories

LED

ISSUE

TRY

QRE – All LEDs

Flashing

Unplug the INPUT cable, wait 5 seconds, and plug it back in. If the condition

persists the unit needs to be replaced.

Any RJ45

Green LED is off

between

NU/QRE/CU

Link is down

CU is not connected or cannot be seen. Check QRE to CU cable and/or CU. CU may

be checked by plugging directly to back of NU or QRE Output with LAN test cable.

Check NU – QRE – CU cables lengths (must not exceed 100 meters each, and use

of patch panels may reduce maximum length).

CHAPTER 7. TERMINOLOGY

Active DAS. A powered DAS (Distributed Antenna System) Network.

Attenuator. An electronic device that reduces the amplitude of a signal.

Cel-Fi WAVE. A cloud portal system for managing Cel-Fi systems

Coverage Unit (CU). The Cel-Fi unit that broadcasts cellular service where coverage is needed (Service

signal).

Donor Antenna. Receives and transmits signals with the existing cellular network.

External Antenna. Antennas external to a device and connected with RF cables.

Gain, or System Gain. The amount of amplification that may be applied to the source signal.

IBwave. A solutions planner that allows you to perform complete RF distribution designs with hardware

such as Cel-Fi products.

Interference. Locations usually between multiple cell sites that may be interfering with each other and

reducing network capacity.

Isolation. Separating donor-service antennas to limit feedback potential.

MIMO. Multiple-Input Multiple-Output antenna scheme that improves capacity. Cel-Fi QUATRA is a 2x2

MIMO system, using two antennas per NU or CU.

Network Unit (NU). The Cel-Fi unit that connects to the existing cellular network (Donor signal).

Pilot Pollution. See Interference.

PoE (Power over Ethernet). To pass electrical power along with data on Ethernet cabling.

QMA connector. A spring loaded quick connect small-size RF connector used to join coaxial cables.

QMT (Cel-Fi QUATRA Management Tool). A Smartphone App and cloud-based management system that

allows local and remote management of Cel-Fi QUATRA systems.

QRE (Cel-Fi QUATRA Range Extender). Allows Cel-Fi QUATRA NU to CU interconnect cable lengths to

200m.