User Manual

P.G. TM0040AE
1-1
SECTION 1. GENERAL INFORMATION
1.1 INTRODUCTION
1.1.1 Scope of Manual
- This manual is intended to familiarize personnel working with
the Dual Band Cellular/PCS Bidirectional Amplifier A289 with all pertinent aspects of the
amplifier. Included in this manual are a brief physical description, a technical summary,
installation information and operating data.
1.1.2 Purpose of Equipment
- The A289 amplifier is used as a drop-in booster for
cellular and PCS signals carried on 50 ohm coax cable. The amplifier will simultaneously
amplify signals in the Cellular and PCS transmit bands in one direction and the Cellular and
PCS receive bands in the opposite direction. A typical use of the A289 is to provide
Cellular and PCS phone coverage in underground installations.
1.1.3 Physical Description
- The bidirectional amplifier, shown in Figure 3-1, is designed
to be mounted on a flat vertical surface. The unit has two N connectors for connection to
the distribution cable and two BNC test ports to check RF signals. Color coded indicators
provide visual display of the unit's operating status.
1.1.4 Electrical Description
- The bidirectional amplifier provides approximately 20 dB of
gain for signals in the 824 - 849 MHz and 1850 - 1910 MHz bands in the direction of J1 to
J2 (antenna to base) and the same amount of gain for signal in the 869 - 894 MHz and
1930 - 1990 MHz bands in the opposite direction (J2 to J1).
1.1.4.1
- The cable powered unit (P/N 001-0289-001) is powered through the distribution
cable. The unit provides DC continuity from J1 to J2 to allow powering of downstream
amplifiers from upstream power sources such as PS212 and PS213.
The local powered unit (P/N 001-0289-002) is powered through a 5-pin DIN receptacle.
The P.G. Electronics power source PS288 should be used for local powering. The unit
provides DC continuity from J1 to J2 to allow powering of downstream amplifiers from
upstream power sources such as PS212 and PS213. Local power is isolated from J1 and
J2.
1.1.4.2
- The unit monitors bias conditions of active devices in the RF path and monitors
downlink power in both bands. If one of these devices draws more or less than a
predetermined limit, or if the RF downlink power is low then the FAULT indicator will go on.
Under normal operating condition only the green NORMAL indicator will be on.