P. G. TM0047 REV. 0 electroni El cs electronics OPERATOR'S MANUAL DUAL BAND BIDIRECTIONAL AMPLIFIER MODEL A300 P/N 001-0300-001 RESTRICTION ON DISCLOSURE OF DATA This document contains information proprietary to P.G. Electronics and any disclosure or use of this information or any reproduction of this document for other than the specific purpose for which it is intended is expressly prohibited except as P.G. Electronics may otherwise agree in writing.
P. G. TM0047 GUARANTEE This unit is guaranteed for a period of one year from the date of shipment against failure due to defective parts or improper assembly. This guarantee is limited to replacement of defective material and does not cover damages or other costs resulting from the use of this material whether used correctly or otherwise.
P. G. TM0047 TABLE OF CONTENTS Paragraph Page SECTION 1. GENERAL INFORMATION 1.1 1.1.1 1.1.2 1.1.3 1.1.4 1.2 INTRODUCTION Scope of Manual Purpose of Equipment Physical Description Electrical Description TECHNICAL SUMMARY 1-1 1-1 1-1 1-1 1-1 1-2 SECTION 2. THEORY OF OPERATION 2.0 2.1 2.2 2.2.1 2.2.2 2.2.3 GENERAL DESCRIPTION FAULT REPORTING General Report Type Fault Conditions 2-1 2-1 2-3 2-3 2-3 2-3 SECTION 3. INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS 3.1 3.2 3.3 3.
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P. G. TM0047 SECTION 1. GENERAL INFORMATION 1. INTRODUCTION 1.1.1 Scope of Manual - This manual is intended to familiarize service personnel working on the Dual Band Bidirectional Amplifier A300 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.
P. G. TM0047 1.2 TECHNICAL SUMMARY TABLE 1-1 Performance Characteristics and Salient Features of the A300 SMR/PCS Bidirectional Amplifier Parameter Specification 1. Input Power: 24 - 28 VDC @ 3 A Max. (use PS293) 2. Frequency Range*: (MHz) SMR Uplink: 804-824 PCS 3. Gain: 20dB ±1.5dB 4. Impedance 50 Ohms 5. VSWR 2:1 Typical, 3:1 Maximum 6. Composite Output Power Rating** (dBm) SMR Uplink: +9 7. Output 1dB Compression Point (dBm) Uplink: +17 8.
P. G. TM0047 NOTE IMPORTANT RATING INFORMATION Manufacturer’s rated output power of this equipment is for single carrier operation. For situations when multiple carrier signals are present, the rating would have to be reduced as per Table 1-2, especially where the output signal is re-radiated and can cause interference to adjacent band users. This output power reduction is to be achieved by reduction of input power or by gain reduction and not by an attenuator at the output of the device.
P. G. TM0047 SECTION 2. THEORY OF OPERATION 2.0 GENERAL As explained in Section 1, the A300 is a bidirectional amplifier, which provides 20 dB of gain in both the SMR and PCS wireless transmit and receive bands. The block diagram of the amplifier is shown in Figure 2-1. 2.1 DESCRIPTION 2.1.1 - The unit is composed of two diplexers, two independent bidirectional amplifiers and alarm and voltage regulation circuits. 2.1.
P. G. TM0047 REGULATION EXT DC + ALARM TRANSMITTER CRF CB PB PRF DCJ1-DCJ2 SMR AMPLIFIER ALARM DETECTION SENSOR CRF 800 MHz CB + SENSOR SMR ATTENUATOR J2 J1 BASE SENSOR U2 PB + SENSOR J4 TEST PRF U1 1900 MHz PCS ATTENUATOR PCS AMPLIFIER Figure 2-1.
P. G. TM0047 2.2 FAULT REPORTING 2.2.1 General - The amplifier incorporates a number of circuits to detect deviations in important performance parameters. The unit reports alarm conditions to a remote Monitor unit such as the Model PS212. The various functions are described in this section and may also be referenced in Section 4 where the programming of amplifier options is discussed. 2.2.
P. G. TM0047 The DC current monitoring triggers a fault condition if DC bias current deviates outside predetermined high or low current limits. The downlink RF output power from each frequency band is monitored by separate detectors and a FAULT condition is triggered if the level in either band drops below a nominal level of + 5 dBm.
P. G. TM0047 SECTION 3. INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS 3.1 UNPACKING AND INSPECTION The following checks are recommended after receipt of the equipment from shipping agent: 1. Check for any external damage that could have occurred in transit. If damage is found, report to the shipping agent and to the supplier immediately. 2. Check that all items on the packing slip are present. If any are missing, report to the supplier immediately. 3.
P. G. TM0047 3.2 INSTALLATION The bidirectional amplifier is designed for mounting on a flat vertical surface The unit is mounted with the indicator side down for adequate air circulation. Proceed as follows: 1. Locate a suitable mounting location, allow a clearance of at least 5 inches (13 cm) to route mating cable and connectors to the unit. Drill four pilot holes on 9 x 5 inch centers for No.10 fasteners. 2. Mount the amplifier ensuring there is good air circulation around the amplifier. 3.
P. G. TM0047 9.80 0.265" DIA (4 MOUNTING HOLES) 9.00 BNC FEMALE (2 PLACES) -30dB 850 MHz -24dB 1.9 GHz J4 TAP J3 TAP 5.00 J1 ANTENNA N FEMALE (2 PLACES) MOUNT IN THIS DIRECTION TO ALLOW AIR FLOW. FRONT VIEW J2 BASE RIGHT SIDE VIEW SMR PCS BIAS PWR BIAS PWR FAULT TEST STATUS NORMAL FAULT FAULT CODE 000 FSCM 38243 MODEL A300 P/N 001-0300-001 S/N MADE IN CANADA VERTICAL WALL BOTTOM VIEW Figure 3-1. Installation Data 3-3 VERTICAL WALL 7.
P. G. TM0047 3.3 OPERATING INSTRUCTIONS The A300 dual band bidirectional amplifier has no external controls. When powered the unit will amplify signals in each band and in each direction. When the green light is on, bias conditions of active devices in the RF paths are within specifications and the downlink power in each band is above the minimum preset limit. The red FAULT light goes on whenever a monitored active device in the RF paths has failed or the downlink output power is too low.
P. G. TM0047 SECTION 4. PROGRAMMING OPTIONS 4.0 PROGRAMMING OPTIONS The amplifier contains a number of options which are programmed before the unit is installed, or may be adjusted during system installation or modification. They are set in a default setting by PG before shipment. A summary diagram of these jumpers is affixed to the inside of the removable amplifier cover for use in the field, but a larger view is shown herein (Fig 4-1) together with the following description of these settings.
P. G. TM0047 4.3. FAULT OPTIONS (F) The block of four jumpers for the fault options allows disabling of each of four tests by removing the appropriate jumper. The jumpers to monitor downlink RF power are labelled CRF for the SMR band and PRF for the PCS band. The jumpers to disable amplifier bias current monitoring are labelled CB for the SMR amplifier and PB for the PCS amplifier.
P. G. TM0047 ALARM CODE (SEE HANDBOOK) BINARY CODE IN THIS EXAMPLE IS ZERO FOR PG TEST USE ONLY 0 1 2 3 4 5 6 7 CODE / H OPEN FOR NORMAL OPERATION STATUS REPORTS (OPEN DISABLES OK REPORTS) CELL SMR BAND ATTN ATTENUATOR OUT | 8| 4| 2| 1| STATUS IN 8dB 4dB 2dB 1dB DC CONTINUITY AUTOSET OPTION (OPEN REMOVES DC) DCJ1 DCJ2 IMPORTANT PCS BAND PCS ATTENUATOR ATTN OUT | 8| 4| 2| 1| LEAVE OPEN PG TEST ONLY EX , 1 EXT.
P. G. TM0047 4.4 STATUS OPTION (S) If it is desired to use the amplifier in a system that has "Fault only" monitoring such as is provided by the PS200 unit, then the "OK" reports may be disabled by removing the STATUS jumper. 4.5 TEST (T) The test jumper location does not have any function in normal system operation. It is provided for use in FAT testing in the factory by speeding up the rate of OK code reporting. It should be open for normal operation. 4.
P. G. TM0047 EXAMPLE 1: H L 0 1 2 3 4 5 6 7 20 x 1 = 1 21 x 0 = 0 2 2 x1= 4 23 x 1 = 8 24 x 0 = 0 5 2 x0= 0 26 x 0 = 0 7 2 x 1 = 128 code = 141 U12 H = HIGH OR IN L = LOW OR OUT EXAMPLE 2: H 0 1 2 3 4 5 6 7 L 20 x 1 = 1 1 2 x1= 2 22 x 0 = 0 3 2 x1= 8 24 x 0 = 0 5 2 x 1 = 32 26 x 0 = 0 27 x 0 = 0 code = 43 U12 H = HIGH OR IN L = LOW OR OUT NOTE: DO NOT SET FAULT CODE ABOVE 199. FAULT CODES ABOVE 199 ARE RESERVED Figure 4-2.
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P. G. TM0047 A-1 GENERAL The AUTOSET optional gain control board installs on the jumper pins normally used for manual setting of the gain control attenuators referred to in Paragraph 4.2. When installed the AUTOSET board automatically limits the amplifier output power to the maximum composite level compatible with low intermodulation performance. A-2 INSTALLATION The AUTOSET board has four jumpers which are set depending on whether the amplifier is being used as an IN-LINE or ANTENNA amplifier.
P. G. TM0047 AUTOSET SHUNT POSITIONS CI SHUNT INSTALLED FOR INLINE AMP REMOVED FOR ANTENNA AMP CI AM SHUNT REMOVED FOR STANDARD (TIMED) AGC MODE INSTALLED FOR CONTINUOUS AGC MODE SS AM SHUNT INSTALLED FOR INLINE AMP REMOVED FOR ANTENNA AMP SS AS AS SHUNT REMOVED FOR INLINE AMP INSTALLED FOR ANTENNA AMP PI SHUNT INSTALLED FOR INLINE AMP REMOVED FOR ANTENNA AMP PI Figure A-1. Autoset Shunt Positions.
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