ADC Tower-mounted Amplifier ClearGain - Manual (Page 6)

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ClearGain ® AISG Compliant TMAs
Americas
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AISG Compliant Power Distribution Unit
Time and space are important considerations when selecting and installing wireless components at
base transceiver station sites. The simple, compact design of ADC’s ClearGain AISG Compliant Power
Distribution Unit (PDU) is intended to help service providers save both. From a compact unit that is
easily mounted on a wall or in a rack, the ClearGain PDU provides power and alarming for up to three
ClearGain Tower-Mounted Amplifiers (TMAs).
ClearGain TMAs are fully AISG Compliant. Therefore, the TMA system allows for Remote Electrical Tilt
(RET) signals to be injected into the system at the PDU and extracted out of the TMA from a special RET
connector. The benefit of this system is that the carrier does not have to run RET-specific cables up the
tower resulting in less wind loading, fewer components, and lower costs.
Features:
• Fully AISG Compliant
• Provides power and alarm functions for on-site monitoring of up to six masthead units (MHUs)
• Monitors condition of feeder cable
• Wall or rack-mountable to fit available space
• LED indicators for alarm functions
• Simple, compact design allows for easy installation and connections
The ClearGain AISG Compliant PDU is an integrated unit that provides power and alarm functions for
the ClearGain TMA system. The PDU monitors the current of the MHU. If an MHU fails, the ClearGain
AISG Compliant PDU gives an alarm indication. The ClearGain PDU also monitors the condition of the
feeder cable. Alarm indicators identify failure in the feeder cable or MHUs and in which MHU the failure
occurred, providing fast and easy on-site diagnostics.
The ClearGain TMA system allows for RET signals to be injected into the system at the BTS and
extracted out of the TMA from a special RET connector. The benefit of this system is that the carrier
does not have to run RET-specific cables up the tower resulting in less wind loading, fewer components,
and lowers costs.
The flexible design of the ClearGain AISG Compliant PDU allows it to be rack-mounted or mounted
indoors on the wall or on the side of a BTS cabinet.
An external Bias-T unit is used in conjunction with the Dual Inline PDU and is designed to connect
directly into the BTS coaxial connector. Bias-T units are available with various connector types, with
gas tube arrestors for lightning protection on the ANT and MHU ports. Quarter wave stub lightning
protection is integrated on the BTS port of the Bias-T units.