User's Manual

044-05298 Rev A 1-1
Chapter 1
Product Description
Introduction
This manual contains information and procedures for installation, operation, and maintenance of the
PAF-19XX-EX-XXX Multi-Carrier Power Amplifier (MCPA) Indoor System. The manual is organized into
chapters as follows.
Scope of Manual
This manual is intended for use by service technicians familiar with similar types of equipment. It contains
service information required for the equipment described and is current as of the printing date. Changes which
occur after the printing date may be incorporated by a complete manual revision or alternatively as additions.
Product Description
The PAF-19XX-EX-XXX system, shown in the Figure 1-1 block diagram, is an 1900 MHz, 4-way combined,
frame-mounted BTS solution. The PAF system contains three MCPA subracks, each capable of containing up
to four MCPAs, three filters, and one DC circuit breaker panel.
The MCPA subrack, shown in Figure 1-3, contains linear, feed-forward MCPAs that operate in the
1930 - 1990 MHz range. Each subrack is also equipped with automatic power control (APC), an ethernet
connection, an RS-485/RS-232 connection, a filter I/O port, and two cooling fans. The subrack is installed on
sliding rails so that it can be pulled forward to allow access to the rear of the subrack.
The MCPA, shown in Figure 1-4, is a 1900 MHz module that produces a typical output of 160 watts (52.0
dBm) before system losses, with an instantaneous bandwidth of 25 MHz.
The filter assembly, shown in Figure 1-5, if used, supresses unwanted signals and non-linear components of
the signal from the amplifiers.
The circuit breaker panel, shown in Figure 1-8, consists of two +27 VDC input buses (A and B), and a system
circuit breaker panel. The panel receives +27 VDC from the BTS and then distributes circuit breaker protected
DC power to the individual subracks.
Functional And Physical Specifications
PAF-19XX-EX-XXX system functional and physical specifications are listed in Chapter 5.
❑
Chapter 1 - Product Description
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Chapter 2 - Controls and Indicators
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Chapter 3 - Installation
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Chapter 4 - Maintenance
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Chapter 5 - Specifications