User's Manual

Appendix A
BreezeACCESS MMDS Series 33 SU-I-D Installation Manual
LEDs are also facing downward they can be checked for operation from the
bottom of the mast.
DC Power to the amplifier is supplied through the transmission cable, using an
indoor power supply and DC Injector. The amplifier unit also contains its own
integral lightning protection and DC surge protection to ensure years of
continuous outdoor operation.
BreezeCOM provides the user with two models of the AMP 2440 bi-directional
amplifier:
•
AMP 2440-500. Provides 500 mW (+27dBm) maximum output
•
AMP 2440-250. Provides 250 mW (+24dBm) maximum output
The transmit gain for both models is 12 - 15dB. Full output power of
approximately 500 mW is achieved with 30 mW (+15 dBm) input to the
amplifier; 8 mW (+9dBm) for the AMP 2440-250 model. The amplifier goes into
limiting at this point and higher input power results in only slight increases in the
output power. Up to 100 mW of power may be safely applied directly to the
amplifier input without any damage on either model.
The AMP 2440 bi-directional amplifier comes with power supplies that have
standard 2.1 mm barrel plugs (which are configured as positive (+) tip and
negative (-) outer conductor). Although normally supplied with a power supply,
any regulated 12 Volt DC 1 amp supply can be used. The power supply can be
used with 110 or 240 VAC power.
A.5.1 Installing the AMP 2440 Bi-Directional Amplifier
The AMP 2440 bi-directional amplifier is designated for installation by
professional radio installers. Several key factors unique to the particular
installation determine the power level at the input of the amplifier. The most
important consideration is the cable loss in the transmission cable between the
radio and the pole mounted amp. The installer should understand these and other
factors when computing the input power to the amplifier.
The AMP 2440 bi-directional amplifier can be mast mounted using the steel U-
bolt included with the unit, as shown in Figure A-7. The AMP 2440 bi-