WJ Communications R1920 Single Channel Repeater User Manual 8
WJ Communications, Inc. Single Channel Repeater 8
Contents
- 1. USER MANUAL
- 2. 8
8
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| Document ID | 80889 |
| Application ID | H7JvxOcTzKFloeQXFz1WaA== |
| Document Description | 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 76.43kB (955341 bits) |
| Date Submitted | 2000-01-12 00:00:00 |
| Date Available | 1998-10-29 00:00:00 |
| Creation Date | 2001-04-30 19:09:02 |
| Producing Software | Acrobat Distiller 4.0 for Windows |
| Document Lastmod | 2001-04-30 19:09:03 |
| Document Title | 8 |
WATHNSJOHNSONCOMPANY
R19XX
PCSREPEATER
MANUAL
“This dmvn'ng. prim, or document and subject mnner disclosed
herein are proprietary items to which Warkins-Jnhnson
Company leminx the exclusive right of disseminatian,
reproduction, manufaflmm and sale, This drawing, print or
documt is submitted in cmfidmce fur eonsidentiun by the
designawd recipient or intended using organizatian alone
unless pemiissiun for further disclosure is expressly gflnwi in
writing."
n WATKINSJOHNSON COMPANY
WATK'NW'JOH N 3333 HiIIview Avenue
‘ Palo Alto, CA 94304—1223
RIQXX 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 R19XXXXX PCS Repeater, shown in Figure 1-1. The model number
represents the type of repeater. This manual covers the following types of PCS repeaters. The
model numbers and letters are defined in the following example.
Example: R1910CAD is a PCS indoor repeater, with CDMA modulation, using frequency bands A
and D.
Modulation PCS Frequency Band
R1910-PCS Indoor Repeater CDMA = C AD*,BE*,FC*
TDMA - T
GSM = G
R1920-PCS Outdoor Repeater CDMA - C AD”‘,BE"‘,FC‘=
TDMA - T
GSM = G
* Specifies dual bands.
This manual is divided into four chapters, each covering a particular topic for the operation and
maintenance of the unit. The topics, are as follows:
Chapter Topic
1 General Information and Safety Precautions
2 Installation
3 Operation
4 Scheduled Maintenance
A Appendix A- Software Commands
1-1
R19XX
General Information and Safety Precautions
Figure 1-1. R1910PCS Repeater
R19XX
Figure 1-2.
General Information and Safety Precautions
R1920 PCS Repeater
R19XX General Information and Safety Precautions
Chapter 1 provides a general description of the R19X0 and summarizes the electrical. mechanical,
and environmental characteristics. It also provides a tabular listing of the R19X0‘s 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 R19X0. 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 R19X0.
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.
Appendix A lists the software commands required to communicate with the R19X0, and brief
descriptions of the commands.
R19XX
1-2 SPECIFICATIONS
General Information and Safety Precautions
Table 1-1. R1910 Specification
DESCRWI'ION SPECIFICATION
Fgguency Band AD, BE. or PC
Output Power 100 mWatrs CDMA
500 mWatts TDMA
500 mWatts PCS-1900 (GSM! 4
Filter Bandwidth 1.25 MHz CDMA (other filters available)
5 MHz TDMA (other filters available)
200 kHz GSM-1900 (other filters available}
Noise Figure J 4 dB {mined
Maximum Input without -10 dBm
damage
Ingut Imgedance 50 ohms
Gain Range 40 dB to 70 dB
Riggs 2 dB _|
|_S_ign_ul De_l_ay 6 usec max
Power 1 10 VAC, 60 Hz
Alarms & Smtus
I_§ynv.hesizer, Amplifiers. Power Amplifier‘ Outgut Power, Oscillation
luterfaoe RS-232 jmodem ogtional!
Control Gain, Channel fluency, Auto Level Control, and Tracking Offset
r Cooling 1 Convection
Temperature Operating: -10 to +45 C
Storage: -40 to +85 C
T 12" 16" 3”
me x x
Weight 19 lbs
Weather Resistance NEMA 12
Connecwrs
RF Type N
Control 9 pin Dsub Female
AC Power LNEMA Tme S-ISP
1-5
R1 QXX General Information and Safety Precautions
Table 1-2. R1920 §pecification
DESCRIPTION W 7 7 ,, ,,,, " SPECIFICAN 77
Band AD, BE. or FC
Output Power 6 Watts CDMA
15 Watts TDMA
20 Watts GSM—l900
Filter Bandwidth 1.25 MHz CDMA
300 kHz TDMA
200 kHz GSM-1900
Noise Fi_ e 4dB T pica]
Maximum Input without -10 dBm
dma_e
In-ut Im nedanoe 50 ohms
Gain Rune 55 dB to 95 dB. with a 30dB ran_e
Gain Ste . s 2 dB
Si-al Dela 6 usec max
Power 110/220 VAC, 50/60 Hz
Alarms & Status
S lhesizer, Amlifiers, Power Am -lifier, Out ut Power, Oscillation
Interface RS-232 and modem
Control Gain. Channel -uenc . Auto Level Comm], and Trackin_ Offset
Coolin: Convection
Tempemmre Operating: -40 to +55 C
Storage: -40 to +85 C
Size 14.5“ x 16" x 7"
Weather Resistance
Connectors
RF
Control
AC Power
Weight
45 lbs
Type N
9 pin D—sub
Conduit {terminal block)
H19XX General Information and Safety Precautions
0T:
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 ormful interference when the equipment is operated in a
commerch environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed ard used
in accordance with the instruction manual, may cause hormfiAl
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 modification 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. manufacmre, and intended use of this instrument.
1—4 DESCRIPTION
The WJ-R19X0 Repeaters are used to extend the coverage of 3 PCS hasestation. 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 metroplitan area, or mountains in a more mal area, can reduce
basestation signal strength such that pockets of unuseable areas develop. The WJ-R1920 is
designed to solve these problems.
The repeater receives the basestation signal via an external antenna see FigUre 1-4. This signal is
amplified and filtered by the repeater and ultimately retransmitted via a second antenna. The
entire process is duplicated for the reverse path where the handset signal is amplified and filtered
1—7
R19XX General Information and Safety Precautions
and retransmitted to the basestation. This technique provides PCS coverage inside buildings or in
outside areas that previously did not have sufficient signal strength.
Outside Building Inside Building
Donor Antenna
Repeater Server Antenna
W] R1910
Lightning Arrestor
Figure 1-3. Typical Usage
14.1 Remote Control
Remote control and status reporting of the repeater is provided either through an RS-232 serial
interface or via modem using a standard POTS line. Either interface permits the control of channel
frequency and gain, and can provide unit alarm status.
1-4.2 Prime Power
The unit is equipped with a power supply with an input of 1 10 VAC at 60 Hz. Power consumption
of the R1910 is approximately 65 Watts, while the R1920 is approximately 200 Watts
1-5 MECHANICAL
The R1910 is a 12 x 16 x 3 wall mount unit. Four mounting brackets are provided for installation
The unit is designed to withstand a NEMA [2 type environment.
The R1920 is a 12 x 16 x 3 pole mount unit. Four mounting brackets are provided for installation.
The unit is designed to withstand a NEMA 4 type environment.
1-6 ENVIRONMENTAL CONDITIONS
1-6.1 Non-operating Environmental Conditions
The R19X0 will survive strains. jars, vibrations, or other conditions incident to normal
maintenance, transportation, and handling. Temperature ranges can vary between -40°C and
+85°C with humidity up to 9570 non-condensing.
1-8
Fl19XX General Information and Safety Precautions
1-62 Operating Environmental Conditions
The R1910 can be installed and operated in a commercial environment with temperatures varying
between 40°C and 45°C.
The R1920 can be installed and operated in an outdoor environment with temperatures varying
between 40°C and 55°C.
1-6.3 Transportahility
The R19X0 can be transported by commercial land Cam'ers or pressurized commercial air carriers
without special handling provisions.
1—9
R19XX Installation
CHAPTER 2
INSTALLATION
2-1 INTRODUCTION
This chapter provides information for the installation, setup and alignment of the R19X0 PCS
Repeateri The information consists of procedures for unpacking and inspection. preparation for
reshipment or storage, and description of unit connectors. lt also provides initial start»up
instructions and installation verification tests.
2-2 UNPACKING AND INSPECTION
Examine the shipping canon for damage before unpacking the unit. If the shipping canon is
damaged, try to have the carrier‘s agent present when the equipment is unpacked. If carrier's agent
is not available, retain the shipping canons and padding material for the carrier‘s inspection if
damage to the equipment is evident after it has been unpacked.
Verify that the equipment is complete, as listed on the packing slip. Contact Watkins-Johnson
Company, Palo Alto, California, or your local Watkins-Johnson representative with details of any
shortage.
The unit was thoroughly inspected and factory adjusted for optimum performance prior to
shipment. Thus, it is ready for use upon receipt. After unpacking and checking contents against the
packing slip. visually inspect all exterior surfaces for dents and scratches. If external damage is
visible. contact Watkins-Johnson Company.
2-3 PREPARATION FOR USE
2-3.1 Power Requirements
The R1910 is equipped with a power supply that accepts 110 VAC, at 60 Hz single phase. Power
consumption of the R1910 is approximately 65 Watts. The R1920 is equipped with a power
supply that accepts 110/220 @ 50/60 Hz. And has a power consumption of approximately 230
Watts.
WARNTNG
Removing or defeating the ground prong on the power cord may
present a lethal shock hazard. Do not use an ac two-to-three wire
adapter plug with this unit.
The R1910 power cord has a 3-conductor grounded plug complying with the National Electric
Code (NEMA Type 5»15P) for 1 10 VAC operation. For the R1920. or for operation at other
voltages, contact Watkins-Johnson Company or a qualified service technician.
2-1
R19XX Installation
2-3.2 Software Installatlon
The repeater control application, provided on 3.5" floppy disks, runs on any Personal Computer
(PC) running Microsoft Windows 95 or NT, The computer must also have one of two serial
communications ports available for use, COM 1 or COM 2. To install the application, insert disk
1 into floppy disk drive A: and from the Start menu select Run and enter “aNetup” in the text box
of the Run window. Click the OK button and follow the instructions given,
2-13 Operating Environment
Environmental conditions during operation should normally be limited as follows:
R19 10:
a. Maximum humidity: 95%
b. Temperature range: -10°C to +45"C.
R1920:
a. Temperature range: 40°C to +55°C.
2-4 HIE-INSTALLATION INFORMATION
2-4.1 R1910
You will need to know some basic information before beginning the R191!) installation. Write this
information down, you will need it later on.
Base station location and Channel number to be repeated.
Reverse Tracking offset in dB(0ptional).
Location where the Donor antenna is to be installed
Location where the Sewer antenna is to be installed.
Phone number of modem line. (Optional)
Location where the R1910 is m be installed.
EWEJ'PP’NT'
24.2 R1920
You will need to know some basic information before beginning the R1920 installation. Write this
information down. you will need it later on.
Base station location and Channel number to be repeated.
Reverse Tracking offset in dB(Optional).
Location where the Donor antenna is to be installed.
Location where the Server antenna is to be installed.
Phone number of modem line.
Location where the R1920 is to be installed.
Mwewwr
2-2
R19XX Installation
2-5 INSTALLATION INFORMATION
2-5.1 Donor Antenna Installation
The Donor antenna will be mounted outside most of the time. The antenna should be installed so
that it is in line—of-sight of the base station and is pointed directly at it. If there is an arrow or
polarity marking indicated on the antenna ensure that it is pointing up. Be sure that the antenna or
mast is properly grounded with a grounding strap‘
Determine where the RF cable will enter building and drill hole if necessary. If using a lightning
suppresser, install suppresser inside building where cable entry is. Attach grounding strap to
lightning suppresser. Measure distance between antenna connection and lightning suppressor, add
some length for drip loop and cut cable. When routing cable be careful not to kink. cut or damage
cable. Install connectors on cable using the appropriate tool and connect to antenna and lightning
suppresser connector labeled Surge.
2-52 Server Antenna Installation
The Server antenna should be located in an open area free from metallic obstruction if possible.
Mount antenna and route cable from antenna to R1910 location. When routing cable be careful not
to kink, cut or damage cable. No lightning suppression is needed if the antenna is indoors or under
an overhang. Install connector using the apprOpr-iate tool and connect to antenna.
2-53 R191!) Installation
Ambient temperature in the area where the unit is installed should not exceed 45 °C. Be sure that
unit is positioned upright to permit adequate air flow and that nearby equipment does not discharge
hot air directly on the unit. The installation should allow a free flow of air around the outer
surfaces of the chassis. Access to the bottom should be allowed so that input and output
connections can be conveniently made or changed ifdesired. The unit weighs nominally 19 pounds
and may safely be carried and installed by a single person.
The preferred mounting of the R1910 is on 16" center studs. See mounting bracket installation at
end of manuals If mounting to other surfaces he sure to use appropriate hardware able to withstand
19 lbs. Before mounting to wall verify AC power outlet is within 10 feet. Attach the mounting
brackets to the repeater. Screw in the bottom two Va" X 1 1/2" bolts into studs. Slide in repeater and
mark top two bolt locations. Remove repeater and install remaining two bolts. Slide in repeater and
tighten bolts. Route cable between repeater and lightning suppressor. When routing cable be careful
not to kink, cut or damage cable. Install connectors using the appropriate tool and connect to
lightning suppresser connector labeled Protected and repeater connector 13 Donor. Install connector
on cable from Server antenna and connect to repeater connector 14 Sewer. Connect power cord.
2-5.4 R192!) Installation
TBD
2-3
FHSXX Installation
2-6 R1910 INITIAL TURN-ON PROCEDURE
There are no special instructions for the initial tum-on or operation of the R1910, Simply turn on
the switch Jl located at the bottom of the unit and verify PW'R led is illuminated green as Well as
the AMP and OSC LED’s
2-6.l R192l] Installation
TBD
2-7 SETUP
2-7.1 SERIAL INTERFACE
For the R1910. connect a 9 pin cable between connector 12 Control. For the R1920, connect the Tx,
Rx, and GND, lines to the serial port terminal block inside the repeater. Connect the other end of
the serial cable to the serial COM port on a PC
Serial Port settings:
Baud 9600
Data Bits 8
Stop Bits 1
Parity None
Flow Control Off
Verify software has been installed on PC. On PC click “WJ Repeater Controller" icon. Choose
the COM port the cable is attached to. After the Repeater window opens, all the parameters
should begin appearing. If not, the wrong COM port may have been selected. If the ALC or Rev
Tracking Offset box is enabled '. disable them. Set the correct Channel #. For more detail on a
specific function see the section 3 Operations.
‘NOTE: If ALC is to be used, you must have greater than 75 dB antenna isolation.
2-7.1 MODEM INTERFACE
For the R1910. connect a 9 pin to phone jack adapter to the J2 Control connector. Plug the phone
line into the phone jack of the adapter. For the R1920. connect the Tip and Ring lines of a POTS
line to the Tip and Ring terminal block inside the repeater.
Modem settings:
Baud 2400
Data Bits 8
Stop Bits 1
Parity None
Flow Control Off
2-4
R19XX Installation
Connect a modem phone line to the modem of a PC. Verify software has been installed on the PC.
On the PC, click the “WJ Repeater Controller" icon on the Desktop or in the Stan menu and
follow these steps to establish a connection to the repeater.
1. Choose “Modem" from the interface selection window and press “0k".
2. Enter the phone number of the repeater when prompted. and press “0k".
3 When the main window appears, click “File" on the menu bar. Then select “Connect“ from the
menu.
4. When the Dialer window appears press the “Dial" button to call the repeater.
When a connection is established the Dialer window will disappear and. after several seconds, the
repeater’s parameters will be downloaded. If the ALC or Rev Tracking Offset box is enabled ',
disable them. Set the correct Channel #. For more detail on a specific function see section 3.
Operations.
'NO’1'E: HALC is to be used, you must have greater than 75 dB antenna isolation.
2-7 CONNECTORS
Figure 2-7,l shows the connectors and Table 2-1 provides a description of each connector on the
R1910 unit.
Table 2-1. R1910 Connectors
Reference
Desimator Label Description
11 AC PWR IN This POWER connector is a multipin connector cabling a user-
supplied ac power source (110 VAC.60 Hz) to the power
supply in this unit.
12 RS-232 This 9 pin D-sub female connector is provided for RS-232
communications between the R1910 and a PC.
13 SERVER Receives Handsets RF. Transmits Base Stations RF
J4 DONOR Receives Base Stations RF, Transmits Handsets RF
2-5
R19XX
Installation
Figure 2-7,l R1910 I/O Connections
2-8 ALIGNMENT PROCEDURE
After completing the installation, turn-on procedure, and setup you must align and verify proper
operation of the R19X0.
3.
Connect a PC to the repeater via the selected interface and start the repeater control
application by double clicking its ioon.
If the repeater is operational the application will fill in the Window with the current
settings of the repeater.
Adjust FWD gain until signal is present on RSSI.
Adjust Donor Antenna for maximum signal deflection on RSSI.
Set FWD gain to desired level.
When ready. click the “Use Test" button on the windows control software.
After test complete, verify no Alarms are illuminated red. If yes(no alarms red), skip to
step “i“. If no (alarms illuminated red) go to “e".
Reposition the Donor or Server antennas to improve isolation. or lower FWD or REV
gain settings by ME, clear alarms and repeat step “c'l
If using ALC ', enter ALC Level and enable. Repeat step “c". If not go to “g“.
Ifusing the serial interface, remove cable from 12, RS-232 on R1910.
Test is complete.
2-6
H19XX Installation
2-9 STORAGE
Environmental conditions during storage and shipment should normally be limited as follows:
a. Maximum humidity: 95% (no condensation)
b. Temperature range: -40°C to +85°C
2-10 PACKING FOR RESHIPMENT OR STORAGE
If the R19X0 must be prepared for reshipment or storage, use the original packing and shipping
materials, ifpossible. Otherwise, the following general instructions should be used for repackaging
with commercially available materials:
a. Wrap unit in heavy paper or plastic.
b. Use a strong shipping container. A double-wall carton made of 350-pound test
material is adequate.
c. Use a layer of shock-absorbing material 70 to 100 mm (3 to 4 inch) thick around all
sides of the instrument to provide firm cushioning and prevent movement inside
container. Protect rear panel connectors with cardboard.
d. Settl shipping container securely.
es Mark shipping container FRAGILE to ensure careful handling,
f. In any correspondence, refer to instrument by model number and full serial number.
R19XX Operation
CHAPTER 3
OPERATION
3-1 INTRODUCTION
This chapter provides information for operating the PCS Repeater. The R1910 is designed to
work in an indoor environment only, while the R1920 is designed to work in an outdoor
environment.
The R1910 and R1920 are fully compliant with FCC part 24. For the Rl9lO, there are no panel
controls other than the power switch. For the R1920, there are no external controls or indicators.
Access to A/C power connects and interface connections are via an access panel. ‘
The operator must be familiar with the control software being used and the operation and
functional capabilities of the R19X0.
3-2 OPERATING INSTRUCTIONS
The following paragraphs provide a description of the control functions and operation of the
R19X0 PCS Repeater.
3-2.I Power-up Sequence
For the R1910, to turn on the unit, push the “1" side of the power switch rocker arm to the
depressed position For the RI920, remove the access panel and push the power switch.
The unit will go through an initialization which includes restoring the unit to its last powered-up
state and checking the alarms stat-us.
Table 3-1. Initial Parameter Status
Parameter RIQlO Initial Value R1220 Initial Value
|_ Band AD,BE,FC AD.BE,FC
Channel 1-1199 CDMA 1—1199 CDMA
' 171999 TDMA 1-1999 TDMA
512-810 PCS-1900 (GSM) 512-810 PCS-1900 (GSM)
FWD RF 1930-1990MHz | 1930-1990Ml-Iz
FWD Gain 40-70dB 55-95dB
FWDPower Out 0 to +30dBm +15 to +45dBm
REV RF 1850-1910MH1 1850-1910MI—Iz
I— REV Gain 40-70dB 55-85dB
REV Power Out 0 to +30dBm +15 to +45dBm
3-1
R19XX Operation
FWD Rss > mam
3-22 WJ Repeater Control Application
The repeater is controlled via either a standard RS-232 interface or via modem interface using a
POTS line with the, Windows 95/NT based, Watkins-Johnson Company Repeater Control
application. Figure 3-1 shows the control panel of the application.
At the top of the panel is a menu bar with two menu items, File and Help. The File menu item
provides a means of changing interfaces, connecting or disconnecting from a modem, closing the
application, and also has a maintenance feature used by the factory. The Help menu item contains
a copyright notice and software version information.
CDMA
1540.0 MHz
158m] MHz
Figure 3-1. Repeater Control Panel
34.2.1 Starting Control Software
With the left mouse button, double—click the phone icon labeled “WI Repeater Control." The
application will launch and request which interface to use for communicating with the repeater.
Select the either one of two Com ports or the modem to use and press the OK button, or press
Cancel to quit the application The repeater must be equipped with the modem option in order to
use the modem interface.
3-2
R19XX Operation
When the application is running and using the serial interface, it is able to detect the presence of a
repeater on the selected serial Com port. When a repeater is detected, the application reads its
current configuration and settings and displays them in the application window. See figure 3.1.
When no repeater is detected the application clears the window.
3-2.2.3 Band, Modulation and Bandwidth Parameters
The band, modulation and bandwidth parameters are status indicators only. The “Band" parameter
is the PCS band setting of the repeater. There are 9 possible PCS bands combined into 3 dual band
selections, AD, BE, and FC. Bands AD. BE. and PC are wide band options that give the repeater
the ability to operate in two bands. The modulation parameter displays which modulation type the
repeater is configured for, CDMA, TDMA. or GSM. The bandwidth parameter is the customer
requested saw filter bandwidth of the repeater.
34.2.4 Channel Number and RF Frequency Parameters
The channel and frequency parameters (Fwd RF and Rev RF), are user configurable parameters.
The channel number displays and changes the current channel setting of the repeater, and the “Fwd
RF" and “Rev RF“ parameters display the forward and reverse frequencies of the repeater for the
channel number selected.
The repeater can be set to any allowable frequency channel in the band of the repeater by changing
the channel number. The channel can be changed by either clicking the Up/Down arrow next to
the channel, or by placing the cursor in the channel number box and typing in a new channel
number. Don't forget to press the key when typing in a channel number. When the
channel number is changed the forward and reverse frequencies for that channel are computed and
displayed in the “Fwd RF' and the “Rev RF“ windows.
The repeater can also be tuned by changing either the “Fwd RF“ or “Rev RF" frequency. This is
done by either clicking the lip/Down arrow next to the desired parameter, or by placing the cursor
in the window and entering the frequency via the keyboard. The frequency must be entered in
Megahertz. Once a frequency is entered, the channel number for that frequency is placed in the
channel number display and the other RF frequency is updated. A frequency entered that is not
centered in a valid channel is adjusted to the closest valid charmel. A frequency outside the band
of the repeater is rejected and the previous frequency is restored.
3-2.2.5 Forward and Reverse Gain Parameters
The gain values for the corresponding RF paths can be changed by either clicking the Up/Down
arrow next to the parameter. or by placing the cursor in the desired parameter window and typing
in the value. The ability to change the forward gain parameter is disabled when the Auto-Leveling
Control (ALC) feamre is enabled. Also, the ability to change the reverse gain parameter is
disabled when the Reverse Tracking (Rev Tracking) feature is enabled.
3-3
H19XX Operation
3-2.2.6 RF Power Out Parameters
The “Power Out“ parameters are status information only. They display the measured RF power out
of the repeater, in dBm.
34.2.7 Auto-Leveling Control
The Auto-Leveling Control (ALC), when enabled, commands the repeater to maintain the forward
path RF output power level indicated in the Level box, +l-ZdB. by automatically adjusting the
forward gain as appropriate. The valid range for ALC is 0 to 30dBm for the R19lO, and 15 to
45dBm for the 111920. When ALC is enabled, control of the forward path gain is no longer
allowed. The forward gain display box will tum into a status indicator displaying the current gain
setting, as controlled by the repeater.
34.2.8 Reverse Tracking Control
The Reverse Tracking, when enabled, commands the repeater to keep the reverse path gain at the
“Offset" level from the forward path gain. For example, suppose that the forward gain had been
set to 68dB, and the Reverse Tracking level set to ~4dB. When Reverse Tracking is enabled, the
reverse gain would be automatically set to 64dB.
34.2.9 Received Signal Strength (RSS)
The “Fwd RSS" parameter is a graphical display of the received (input) signal strength in the
forward RF path.
3-22.10 Repeater Alarms
In the center of the panel is the repeater‘s alarm information. There are a group of six General
Alarms and a group of alarms for each RF path. When an alarm condition is detected, the alarm
parameter on the panel will turn red. and stay red as long as the alarm is present With the
exception of an oscillation alarm and a Forward Power Amp alarm, the repeater maintains
operation as much as it is able. However, if an oscillation alarm or Forward Power Amp alarm
occurs, the repeater automatically shuts down the RF chains and ceases to function. Once this
occurs, the only way to clear the alarm is either to cycle AC power on repeater, or click the “Clear
Alarms” button on the control panel. After clearing, the unit will continue to shut down as long as
the oscillation alarm is present.
3-22.11 Oscillation Test
The “OSC Test“ button, when pressed, initiates the oscillation test function. The application
disables ALC and Tracking, if enabled, and raises the gain of each RF path by approximately
l4dB. and monitors the oscillation alarm. The test takes approximately 15 seconds. When the test
is complete, the gain settings and ALC and Tracking settings are restored to their original settings.
If an oscillation alarm occurred the “Clear Alarms” button must be pressed to clear it.
3-4
R19XX Operation
3-21.11 Status Bar
At the bottom of the panel is a status bar, that displays four pieces of information Beginning in
the left most, and largest box, is basic status infonnation about the operation of the application.
The second box from the left display the voltage level of the backup battery if one is installed.
The next box displays the internal temperature of the repeater in degrees centigrade. The right
most box displays the currently selected interface that the application is using to communicate
with the repeater.
When using the serial RS-232 interface, the application is able to detect the presence of a repeater.
When one is not detected the panel clears all the data fields and disables all parameter input fields,
and displays a status message on the status bar of “No Device.“ When a repeater is connected to
the serial pan and mmed on, the application will detect its presence and download and display its
configuration. It will also change the stems bar to indicate a device was found and reenable all
parameter may fields.
3-5
R19XX Scheduled Maintenance
CHAPTER 4
SCHEDULED MAlNTENANCE
4-1 INTRODUCTION
The W] PCS Repeaters are designed to operate for extended periods of time with minimum
routine maintenance Inspection and performance tests should be conducted at regular intervals
consistent with the facility’s normal scheduling and after troubleshooting. No routine adjustments
are required Troubleshooting and performance tests can be most effectively carried out if the
technician first familiar-ins himself with the operating instructions and circuit descriptions Parts
lists and component location diagrams are included in this chapter.
4-2 SCHEDULED MAINTWANCE ACTION INDEX
The scheduled maintenance action index is provided in Table 4—1. It lists the maintenance action to
be taken, gives the paragraph reference for detailed instruction, and specifies the maximum time
intervals between equipment cleaning, inspection, and performance checks.
WARNING
Whenever possible, all preventive maintenance should be
performed with the power cord disconnected from prime power
source
4-3 EQUn’leNT REQUIRED
No special tools or test equipment are required for performing routine preventive maintenance.
4-4 PREVENTIVE MAINTENANCE PROCEDURES
The R1910 is designed to operate for extended periods of time with minimum maintenance.
Normally, the only preventive maintenance tasks to consider are:
a. Cleaning the unit.
b. Inspecting the outside of the unit for physically worn. damaged, loose, or overheated
parts.
c. Performing a performance check of the unit
If the equipment is used in an environment where a great deal of dust, high temperature, or high
humidity is present, the frequency of the checks should be increased.
R19XX Scheduled Maintenance
Table 4—1. Scheduled Maintenance Action Index
agraph
4- 1
When the unit is not operating properly,
Every 12 months or when dust is seen on the
surface of the equipment.
Cleaning outside of equipment
Inspecting for damage or wear
44.1 Exterior Cleaning
Remove loose dirt accumulated on the outside of the unit with a moist paper towel, cloth, or brush.
The brush is good for removing dirt on and around the connectors, Dirt and grease which is not
removed can be cleaned off with a paper towel or cloth made moist with a detergent and water
solution. Do not use an abrasive cleaner.
4-4.2 Inspection For Damage or Wear
Many potential or existing troubles can be detected by making a visual inspection of the uniti For
this reason, a complete visual inspection should be made on a regular basis and whenever the unit
is inoperative. Damage due to overheating may be the result of other less apparent troubles in the
unit Mechanical parts such as pin connectors and power switch be inspected for excessive wear.
looseness, misalignment, corrosion. and other signs of deterioration.
4-5 GENERAL MAINTENANCE
A complete inspection of the unit should be made during the cleaning operation for signs of
mechanical and electrical failures. Mechanical parts. including connectors, should be checked for
wear, loose connections, bad alignment, or other possible causes of defective operation. Worn
parts should be replaced and loose connectors tightened. Check for loose cable connections, and
tighten those connectors Remove the fuse and check for corrosion or damage, replace when either
occurs.
After a repair has been made, alignment should be carried out, if necessary. and appropriate
performance tests should be used to verify proper operation.
4-6 ALIGNMENT
This unit requires that the gain be set correctly for both server and donor paths, to avoid
oscillation.
4-7 REPAIR
All repairs to W] PCS repeaters should be performed by a Watkins-Johnson authorized technician.
Any unauthorized repair could void the warranty.
42
R19XX PCS Repeater Interface
APPENDDK A
PCS REPEATER INTERFACE
A-l INTERFACE PROTOCOL
The interface to the Repeater is via a standard RS-232. The data protocol is ASCII, 8 data bits, 1
stop bit, no parity, 9600 baud.
The structure of a command string is as follows:
[ [] [<;>] ]
Elements within angle brackets (<.>)are required whereas elements within brackets ([,]) are
optional, depending on the command being sent and on whether cheeksum checking is enabled
(sec CHK command).
cmd = ASCII command string as defined in the command set below.
space - ASCII space character (20h).
parameter - Any ASCII parameter string required with the command
semicolon = Semicolon character to separate checksum from command string.
checksum - A 2 digit ASCII Hex value. Checksum - 256 - (sum of the string)
CR = Carriage return character (ODh) terminates the string,
Upon receiving the command string. the Repeater will respond with a status value (0 - 255).
followed by a . There will be no checksum in a status message. If the command was a
request for data. the status message will be sent first followed by the requested data string. If the
status returned is not good. no data will be returned.
The response to a request for data command is to return the original command followed by the
data requested, a semi-colon, then a checksum for the entire string.
Only one command string can be sent at a time. Once the controlling computer receives status and
any requested data from a sent command, then another command can he sent.
Examples:
Command string: APN 12345.678;F4 Sets the Part number
Response: 0 Responds with good status
Command string: AFN? ;87 Requests the Part number
A-l
R19XX
PCS Repeater Interface
Status Response: 0 Good Status
Response: APN 12345.678;F4 Responds with Part number
A-Z COMMAND SET
ADC?
ALCO f
ALCO?
ALRM?
ALRMl 7
ALCLR
AFN?
ASN?
ATPH i
ATPH'?
ATPL i
ATPL?
BBE
BBE
BBE’!
BLVL?
END?
CHK
Request Date Code. Returns: ADC dd/mm/yyyy
Enable AutoALevel Control for Forward Path.
Disable Auto-Level Control for Forward Path.
Request Auto-Level Control status.
Set Auto-Leveling level in dBm. f - 0 - 45 db. in .5 dB steps.
Set Reverse gain Tracking offset level in dB. f - +/-10 db, in 2 dB steps.
Request Reverse Tracking level in dB.
Request General Alarms. (see below).
Request Channel Convener Alarms. (see below)
Clear Alarms.
Request Assembly Part number.
Request Serial number. Returns: ASN s (20 char string max)
Set High Temperature Alarm value in degrees centigrade.
Request High Temperature Alarm setting in degrees centigrade.
Set Low Temperature Alarm value in degrees centigrade.
Request Low Temperature Alarm setting in degrees centigrade.
Enable backup battery monitoring.
Disable backup battery monitoring.
Request backup battery monitoring status.
Request backup battery level.
Request Band Setting.
Enable Checksum Checking on received command strings.
A-Z
H19XX
CHK/
CHK?
CHN?
CHSZ'!
FCA i
FCA'I
FLB'!
FPO?
HBE
HBE/
HBE?
HBT i
HBT?
HWR'!
LGIN s
LGIN/
MFN?
PEN
PEN/
PEN?
PHN s
PHN'.7
P07
PSW s
PSW?
PCS Repeater Interface
Disable Checksum Checking on received command strings.
Request Checksum Checking status. Retums "Cl-1K" or CHK/“.
Set channel number. i- 0 - 3500
Request channel number.
Request Channel Spacing in kHz.
Set Forward Coarse attenuation. i - 0 to 30 dB, even numbers only.
Request Forward Coarse attenuation.
Request SAW Filter Bandwidth in MHz.
Request Forward RF power-out in dBm.
Enable Heartbeat function.
Disable Heartbeat function.
Request Heartbeat function status.
Set Heartbeat time in hours. i = 0 ~ 255 hours
Request Heartbeat time setting.
Request Hardware Revision.
Login command. 5 - password string. 12 characters max.
Logout command.
Get Manufacturer's name.
Enable outgoing phone calls. (only with modern installed)
Disable outgoing phone calls.
Request outgoing phone call status
Set phone number for outgoing phone calls. (only with modern installed)
Request phone number for outgoing calls.
Request RF Power Output levels of both paths. Returns: P0 fwd rev (dBm)
Set user Login password. 12 characters max,
Request user Login password.
A-3
R19XX
RCA i
RCA?
RPO?
RTMP’.7
STBY
STBY/
STBY?
SWR?
TRK'.7
UGN?
Set Reverse Coarse attenuation. i - 0 to 30dB, even numbers only.
Request Reverse Coarse attenuation in dB.
Request RF Power Output level in (Him of Reverse path.
Request Ambient temperature in degrees centigrade.
Go to Standby mode. Tums off both RF paths.
Go to On-line mode. Turns on both RF paths.
Request operation mode. Retums: “STBY” or “STBY/"
Request Repeater Software Revision.
Enable Reverse Path Tracking. (see ALCO)
Disable Reverse Path Tracking.
Request Tracking status. Retums: ‘“TRK or “’I'RK/'
Request unit gain in dB. (i.e.. max gain of either RF path)
Note: The default user passwmd as shipped item the factory: Wlwueless
PCS Repeater Interface
R19XX PCS Repeater lnte/face
A-3 RESPONSE STATUS VALUES
0 No Error.
1 Range error. A parameter is out of range
2 Unknown Command.
3 Not Enough parametersr
4 Bad checksum.
5 Not Wrimhle.
6 Length Error. String is to long.
7 General Error.
8 Password not correct.
9 Initialization Not Complete.
10 Not Logged In
1 1 RF Convener Module(s) communications error.
12 Not logged in as administrator.
A-4 BIT MAP OF ALARM RESPONSES
There are two alarm commands, a General Alarm command. and a Convener Alarm command.
The Alarm status response for a particular alarm request consists of the original command string
and one or two bytes of alarm information encoded as decimal numbers in ASCII formaL The
alarm information is bit encoded in each alarm byter A set bit indicates an active alarm.
The returned alarm strings are as follows:
ALRM 255;XX
Where:
ALRM - The original command for the General alarms.
255 - General Alarm Byte.
XX - ASCII Hex Checksum ‘
A-S
R19XX
ALRMl 255 255;XX
PCS Repeater Interface
Where:
ALRMl - The original command for Convener alarms.
lst 255 - Forward Convener Alarm Byte.
2nd 255 - Reverse Convener Alarm Byte
XX = ASCII Hex Checksum
General Alarm Byte:
Lit film
0 Forward Power Amp Fail
1 AC Power Fail
2 Forward Power Amp VSWR Fault
3 Not Used
4 Battery Low
5 Temperature Alarm
6 Not Used
7 Convener Alarm
Forward Path Converter Alarm Byte:
B_il Allan
G LNA Failure
1 RF Input Power
2 DC Power Fall
3 Lock Failure
4 Power Amp Fall
5 Oscillation Fault
R19XX PCS Repeater Interface
6 Not Used
7 Not Used
Reverse Path Convener Alarm Byte:
M Al+ilfllI
0 LNA Failure
1 Max RF Input Power
2 Convener DC Power Fail
3 Lock Failure
4 Power Amp Fail
5 Oscillation Fault
6 Not Used
7 Not Used
Note that either an Oscillation Fault or a Forward Power Amp fault in the general alarm will cause
power to be shut off to the Convener modules and power amp. Either an “ALCLR” command or
cycling AC power to the unit is required to restore power to the modules
A-S BAND SETTING MAP
The Band setting defines the PCS modulation type and the band within the PCS RF spectrum
where the unit is operating. The format of the modulation/band information is a numeric followed
by the band letter, with no wl-n‘te space in between. For example, “1A“ would indicate modulation
type 1 and hand A.
Modulation Number Modulation
1 CDMA
2 TDMA
3 GSM
R19XX
PCS Band Assignments:
Band
Frmuency Allgcmiun
1850 - 1865 Mhz, Reverse Path
1930 » 1945 Mhz, Forward Path
1870 — 1885 M112, Reverse Path
1950 - 1965 Mhz, Forward Path
1895 - 1910 Mhz, Reverse Path
1975 - 1990 Mhz, Forward Path
1865 - 1870 M112, Reverse Path
1945 - 1950 Mhz, Forward Path
1885 - 1890 Mhz. Reverse Path
1965 » 1970 Mhz, Forward Path
1890 - 1895 Mhz. Reverse Path
1970 - 1975 Mhz, Forward Path
PCS Channel Assignments for CDMA Modulation:
mm UOw>
Channel Assignments
0 - 299
400 - 699
900 - 1199
300 - 399
700 - 799
800 - 899
To compute the frequency of a particular channel:
PCS Repeater Interface
Forward Path Channel Frcq‘ - Channel# "‘ 50kHz + 1930 MHZ
Reverse Path Channel Freq. - Channel}? * 50kl-lz + 1850 MHz
A—S
R19XX
PCS Channel Assignments for TDMA Modulation:
mUOW>
‘11
MM
1 4199
688-1165
15014999
501-665
1168-1332
1335-1499
To compute the frequency of a particular channel:
PCS Repeater Interface
Forward Path Channel Freq. - Channel# “‘ 30kHz + 19294990MH2
Reverse Path Channel Freq, - Channel# “‘ 30kl-Iz + 1850.010MHz
PCS Channel Assignments for GSM Modulation:
“1 U 0 U >
Channel Assignments
512 - 585
611 - 685
736 - 810
586 - 610
686-710
711-735
To compute the frequency of a particular channel:
Forward Path Channel Freq. = (Channel# - 511) * ZOOkHz + 1930MHz
Reverse Path Channel Freq. - (Channelft - 511) * ZOOkHz + IBSOMHZ
Note: The channel number sent is:
Channel# — 511
R19XX PCS Repeater Interface
Example:
To read the current band assignment:
BND7 Command to request the band info.
0 Good status response from unit.
END 1A;XX Response fmm unit to BND command,
Also. cemin bands can be combined to provide a wide band unit. Bands A and D can be combined
into band AD, bands B and E can be combined into band BE. and bands F and C can be combined
to form band PC. If a CDMA unit is set to band FC, for example, the allowable channels would be
800 to 1199, the concatenation of the channels for bands F and C4
A—IO
\%fi\£
PCS Repeater Interface
R19XX
Example:
To read the current band assignment:
BND7 Command to request the band info.
Good status response from unit.
0
BND 1A;XX
Also, certain bands can be combined to 1:
into hand AD, bands B and E can be combined ‘mw band BE,
w form band PC. If a CDMA unit is se( to ban ,
800 to 1199, the concatenation of the channels for bands F and C
ponse from unit to BND command.
and D can be combined
d C can be combined
le channels would be
Res
A-lO
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