WJ Communications R810, R820 User Manual
W
Watkins-Johnson Company
Repeater
Manual
WATKINS-JOHNSON COMPANY
3333 Hillview Avenue
Palo Alto, CA 94304-1223
Watkins-Johnson Company
PCS Repeater
Manual
“This drawing, print, or document and subject matter disclosed
herein are proprietary items to which Watkins-Johnson Company
retains the exclusive right of dissemination, reproduction,
manufacture and sale. This drawing, print or document is
submitted in confidence for consideration by the designated
recipient or intended using organization alone unless permission
for further disclosure is expressly granted in writing.”
09/99
WATKINS-JOHNSON COMPANY
3333 Hillview Avenue
Palo Alto, CA 94304-1223
(800) 951-4401
Internet: http://www.wj.com
Repeater Table of Contents
Table of Contents
Section Topic Page
Chapter 1 General Information and Safety Precautions 1-1
Introduction 1-1
Specifications 1-6
Safety Considerations 1-10
Description 1-10
Mechanical 1-11
Environmental Conditions 1-12
Chapter 2 Installation 2-1
Introduction 2-1
Unpacking and Inspection 2-1
Preparation For Use 2-1
Pre-Installation Information 2-2
Installation Information 2-3
Repeater Initial Turn-On Procedure 2-6
Setup 2-6
Isolation and Alignment Procedure 2-7
Multicarrier & FCC Spurious 2-9
Connectors 2-10
Storage 2-11
Packing for Reshipment or Storage 2-11
Chapter 3 Operation 3-1
Introduction 3-1
Operating Instructions 3-1
Chapter 4 Scheduled Maintenance 4-1
Introduction 4-1
Scheduled Maintenance Action Index 4-1
Equipment Required 4-1
Preventive Maintenance Procedures 4-1
General Maintenance 4-2
Alignment 4-2
Repair 4-2
Chapter 5 Drawings 5-1
R1910 Mounting 5-1
R1920 Mounting Plate 5-2
R1920 and BB42 Mounting 5-3
R1920 Electrical and System Configuration 5-4
i
Repeater General Information and Safety Precautions
CHAPTER 1
GENERAL INFORMATION AND SAFETY PRECAUTIONS
1-1 INTRODUCTION
This manual provides information pertaining to the installation, operation, and maintenance of the
Watkins-Johnson Repeaters, shown in Figure 1-1. The model number represents the type of repeater.
This manual covers the following types of repeaters. The model numbers and letters are defined in
the following example.
Example: R1910CAD-1M is a PCS indoor repeater, with CDMA modulation, using frequency
bands A and D, 1.25mhz bandwidth, with a modem.
Repeater Model Number Repeater Description
R1910 PCS Inbuilding Repeater
R1920 PCS High Power Repeater
R1930 PCS Medium Power Repeater
R1940 PCS Low Power Repeater
R810 Cellular Inbuilding Repeater
R820 Cellular High Power Repeater
Modulation PCS
Frequency
CDMA = C
TDMA = T
GSM = G
AD*
BE*
FC*
Band
Bandwidth Interface
Option
-1 = 1.25 MHz
-2 = 0.20 MHz
-3 = 5.00 MHz
-4 = 15.0 MHz
-5 = 1.00 MHz
-6 = 4.50 MHz
-7 = 7.00 MHz
M= modem
* Specifies dual bands.
** The R810 and R820 cover the entire A or B band
1-1
Repeater General Information and Safety Precautions
This manual is divided into five chapters, the first four covering a particular topic for the operation
and maintenance of the unit. Chapter 5 includes drawings to assist in mounting WJ repeaters. The
topics are as follows:
Chapter Topic
1 General Information and Safety Precautions
2 Installation
3 Operation
4 Scheduled Maintenance
5 Drawings
1-2
Repeater General Information and Safety Precautions
Figure 1-1. R1910 and R810 Repeater
1-3
Repeater General Information and Safety Precautions
Figure 1-2. R1920/30/40, R820 Repeater
1-4
Repeater General Information and Safety Precautions
Chapter 1 provides a general description of the Repeater and summarizes the electrical, mechanical,
and environmental characteristics. It also provides a tabular listing of the Repeater performance
specifications. Safety precautions to be observed while operating or servicing the unit are also
explained.
Chapter 2 provides instructions for the initial inspection and installation of the Repeater. It describes
the purpose and function of all I/O connectors, provides initial start-up instructions, and provides
installation verification tests.
Chapter 3 describes the purpose and function of all remote controls and status indicators and
explains how to operate the unit.
Chapter 4 provides a scheduled maintenance action index and describes maintenance procedures that
should be performed on a regular basis, such as cleaning and inspection.
Chapter 5 provides drawings useful when mounting a WJ repeater to a structure.
1-5
Repeater General Information and Safety Precautions
1-2 SPECIFICATIONS
Table 1-1. R1910 Specification
DESCRIPTION SPECIFICATION
Frequency Band AD, BE, or FC
Output Power 100 mWatts CDMA
500 mWatts TDMA
500 mWatts PCS-1900 (GSM)
Filter Bandwidth 1.25 MHz CDMA (other filters available)
200KHz TDMA (other filters available)
200 kHz GSM-1900 (other filters available)
Noise Figure 4 dB Typical
Maximum Input without damage -10 dBm
Input Impedance 50 ohms
Gain Range 40 dB to 70 dB or 65 dB to 95 dB
Gain Steps 2 dB
Signal Delay 5 usec max
Power 115 / 230 VAC, 60 / 50 Hz, 1.6 / 0.8 Amps
Alarms & Status Synthesizer, Amplifiers, Power Amplifier, Output Power, Oscillation
Interface RS-232 (modem optional)
Control Gain, Channel frequency, Auto Level Control, and Tracking Offset
Cooling Convection
Temperature Operating: -10 to +45ºC
Storage: -40 to +85ºC
Size 12” x 16” x 3”
Weight 19 lbs.
Weather Resistance NEMA 12
Connectors
RF
Control
AC Power
Type N
9 pin Dsub Female
NEMA Type 5-ISP
1-6
Repeater General Information and Safety Precautions
Table 1-2. R1920 Specification
DESCRIPTION SPECIFICATION
Frequency Band AD, BE, or FC
Output Power 8 Watts CDMA
10 Watts TDMA
15 Watts GSM-1900
Filter Bandwidth 1.25 MHz CDMA (other filters available)
200 kHz TDMA (other filters available)
200 kHz GSM-1900 (other filters available)
Noise Figure 4 dB Typical
Maximum Input without damage -10 dBm
Input Impedance 50 ohms
Gain Range 65 dB to 95 dB
Gain Steps 2 dB
Signal Delay 5 usec max
Power 115 / 230 VAC, 60 / 50 Hz, 4 / 2 Amps
Alarms & Status Synthesizer, Amplifiers, Power Amplifier, Output Power, Oscillation
Interface RS-232 and modem
Control Gain, Channel frequency, Auto Level Control, and Tracking Offset
Cooling Convection
Temperature Operating: -40 to +50ºC
Storage: -40 to +85ºC
Size 14.5” x 16” x 9”
Weight 55 lbs.
Weather Resistance NEMA 4X
Connectors
RF
Control
AC Power
Battery
Type N
9 pin D-sub, 3 pin circular(see section 2 for pinout information)
3 pin Mini-circular(see section 2 for pinout information)
6 pin Mini-circular
1-7
Repeater General Information and Safety Precautions
Table 1-3. R1930 Specification
DESCRIPTION SPECIFICATION
Frequency Band AD, BE, or FC
Output Power 4 Watts CDMA
Filter Bandwidth 1.25 MHz CDMA (other filters available)
Noise Figure 4 dB Typical
Maximum Input without damage -10 dBm
Input Impedance 50 ohms
Gain Range 65 dB to 95 dB
Gain Steps 2 dB
Signal Delay 5 usec max
Power 115 / 230 VAC, 60 / 50 Hz, 4 / 2 Amps
Alarms & Status Synthesizer, Amplifiers, Power Amplifier, Output Power, Oscillation
Interface RS-232 and modem
Control Gain, Channel frequency, Auto Level Control, and Tracking Offset
Cooling Convection
Temperature Operating: -40 to +50ºC
Storage: -40 to +85ºC
Size 14.5” x 16” x 9”
Weight 55 lbs.
Weather Resistance NEMA 4X
Connectors
RF
Control
AC Power
Battery
Type N
9 pin D-sub, 3 pin circular(see section 2 for pinout information)
3 pin Mini-circular(see section 2 for pinout information)
6 pin Mini-circular
1-8
Repeater General Information and Safety Precautions
Table 1-4. R1940 Specification
DESCRIPTION SPECIFICATION
Frequency Band AD, BE, or FC
Output Power 2 Watts CDMA
Filter Bandwidth 1.25 MHz CDMA (other filters available)
Noise Figure 4 dB Typical
Maximum Input without damage -10 dBm
Input Impedance 50 ohms
Gain Range 65 dB to 95 dB
Gain Steps 2 dB
Signal Delay 5 usec max
Power 115 / 230 VAC, 60 / 50 Hz, 4 / 2 Amps
Alarms & Status Synthesizer, Amplifiers, Power Amplifier, Output Power, Oscillation
Interface RS-232 and modem
Control Gain, Channel frequency, Auto Level Control, and Tracking Offset
Cooling Convection
Temperature Operating: -40 to +50ºC
Storage: -40 to +85ºC
Size 14.5” x 16” x 9”
Weight 55 lbs.
Weather Resistance NEMA 4X
Connectors
RF
Control
AC Power
Battery
Type N
9 pin D-sub, 3 pin circular(see section 2 for pinout information)
3 pin Mini-circular(see section 2 for pinout information)
6 pin Mini-circular
1-9
Repeater General Information and Safety Precautions
Table 1-1. R810 Specification
DESCRIPTION SPECIFICATION
Frequency Band A or B
Output Power 100 mWatts
Filter Bandwidth Entire A or B band
Noise Figure 4 dB Typical
Maximum Input without damage -10 dBm
Input Impedance 50 ohms
Gain Range 40 dB to 70 dB
Gain Steps 2 dB
Signal Delay 5 usec max
Power 115 / 230 VAC, 60 / 50 Hz, 1.6 / 0.8 Amps
Alarms & Status Synthesizer, Amplifiers, Power Amplifier, Output Power, Oscillation
Interface RS-232 (modem optional)
Control Gain, Channel frequency, Auto Level Control, and Tracking Offset
Cooling Convection
Temperature Operating: -10 to +45ºC
Storage: -40 to +85ºC
Size 12” x 16” x 4”
Weight 19 lbs.
Weather Resistance NEMA 12
Connectors
RF
Control
AC Power
Type N
9 pin Dsub Female
NEMA Type 5-ISP
1-10
Repeater General Information and Safety Precautions
Table 1-1. R820 Specification
DESCRIPTION SPECIFICATION
Frequency Band A or B
Output Power 5 Watts
Filter Bandwidth Entire A or B band
Noise Figure 4 dB Typical
Maximum Input without damage -10 dBm
Input Impedance 50 ohms
Gain Range 55 dB to 85 dB
Gain Steps 2 dB
Signal Delay 5 usec max
Power 115 / 230 VAC, 60 / 50 Hz, 4 / 2 Amps
Alarms & Status Synthesizer, Amplifiers, Power Amplifier, Output Power, Oscillation
Interface RS-232 (modem optional)
Control Gain, Channel frequency, Auto Level Control, and Tracking Offset
Cooling Convection
Temperature Operating: -10 to +45ºC
Storage: -40 to +85ºC
Size 14.5” x 16” x 10”
Weight 55 lbs.
Weather Resistance NEMA 12
Connectors
RF
Control
AC Power
Battery
Type N
9 pin D-sub, 3 pin circular(see section 2 for pinout information)
3 pin Mini-circular(see section 2 for pinout information)
6 pin Mini-circular
1-11
Repeater General Information and Safety Precautions
NOTE:
This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the
interference at his own expense.
__________
CAUTION:
Changes or modifications not expressly approved by the
manufacturer responsible for compliance could void user’s
authority to operate the equipment.
1-3 SAFETY CONSIDERATIONS
__________
WARNING
To prevent personal injury, observe all safety precautions and
warnings stated on the instrument and in this manual.
Specific warnings, cautions, and instructions are placed wherever applicable throughout this manual.
These precautions must be observed during all phases of operation, service, and repair of this unit.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates
safety standard of design, manufacture, and intended use of this instrument.
1-4 DESCRIPTION
The WJ-R19XX Repeaters are used to extend the coverage of a PCS basestation. For example,
inside buildings that do not allow sufficient signal strength from the basestation, there exists a hole in
the coverage for wireless service. The WJ-R1910 is designed to solve that problem.
Likewise, tall buildings in a metropolitan area, or mountains in a more rural area, can reduce
basestation signal strength such that pockets of unusable areas develop. The WJ-R1920/30/40 is
designed to solve that problem.
1-12
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