Bird Technologies Group 5PI031202 SIGNAL BOOSTER TWO-WAY User Manual 61 89A 50 A18 G1 UserManV3

Download:
Mirror Download [FCC.gov]
Document ID	393008
Application ID	mlgIih+LZp/1DCADDHAcKg==
Document Description	USERS MANUAL
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	38.23kB (477850 bits)
Date Submitted	2004-01-30 00:00:00
Date Available	2004-01-30 00:00:00
Creation Date	2004-01-27 12:05:26
Producing Software	Acrobat Distiller 4.05 for Windows
Document Lastmod	2004-01-27 12:05:29
Document Title	61-89A-50-A18-G1-UserManV3.fm
Document Creator	HP_CLJ85.DRV Version 4.20
Document Author:	dennish

61-89A-50-A18-G1-UserMan page 1 of 20
Part No.
7-9352-4
Installation and Setup Manual
for the Two-Way Signal Booster System
Model Number 61-89A-50-A18-G1
Copyright (c) 2003 TX RX Systems, Inc.
First Printing: December 2003
TX RX Systems Inc.
Version Number
Version Date
12/11/00
01/15/04
01/26/04
01/27/04
Manual 7-9352 (version 4)
01/27/04
Page 1
61-89A-50-A18-G1-UserMan page 2 of 20
Warranty
This warranty applies for one year from shipping date.
TX RX SYSTEMS INC. warrants its products to be free from defects in material and workmanship at the time of
shipment. Our obligation under warranty is limited to replacement or repair at our option, of any such products (with
the exception of tubes) which shall have been defective at the time of manufacture. TX RX SYSTEMS INC. reserves
the right to replace with merchandise of equal performance although not identical in every way to that originally sold.
TX RX SYSTEMS INC. is not liable for damage caused by lightning or other natural disasters. No product will be
accepted for repair or replacement without our prior written approval.
All Shipping charges on returned products must be prepaid by the purchaser. TX RX SYSTEMS INC. shall in no event
be liable for consequential damages, installation costs or expenses of any nature resulting from the purchase or use
of products, whether or not they are used in accordance with instructions. This warranty is in lieu of all other warranties, either expressed or implied, including any implied warranty of merchantability or of fitness. No representative is
authorized to assume for TX RX SYSTEMS INC. any other liability or warranty than set forth above in connection with
our products or services.
Disclaimer
Product part numbering in photographs and drawings is accurate at time of printing. Part number labels on
TX RX products supercede part numbers given within this manual.
Symbols Commonly Used
CAUTION or
ATTENTION
TX RX Systems Inc.
High Voltage
Electrical Shock Hazard
Use Safety Glasses
Hot Surface
ESD Electrostatic Discharge
Important Information
Manual 7-9352 (version 4)
01/27/04
Page 2
61-89A-50-A18-G1-UserMan page 3 of 20
For Class A Unintentional Radiators
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.
WARNING
Changes or modifications not expressly approved by TX
RX System Inc. could void the user’s authority to operate
the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference and
(2) this device must accept any interference received, including interference
that may cause undesired operation.
WARNING
To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of 1.0 Meters or more
should be maintained between the UPLINK antenna of this
device and persons during device operation. To satisfy FCC
RF exposure requirements for mobile transmitting devices, a
separation distance of 0.2 Meters or more should be maintained between the DOWNLINK antenna of this device and
persons during device operation. To ensure compliance,
operations at closer than these distances is not recommended.
The antenna used for this transmitter must not be co-located
in conjunction with any other antenna or transmitter.
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 3
61-89A-50-A18-G1-UserMan page 4 of 20
Antenna System Installation
The antenna or signal distribution system consists of two branches. An uplink
branch typically uses an outdoor mounted, unidirectional gain antenna such
as a yagi and a downlink signal radiating system consisting of a network of
zero-gain whip antennas or lengths of radiating cable usually mounted inside
of the structure.
Even though the antenna system may not be supplied or installed by TX RX
Systems. The following points need to be observed because both the safety
of the user and proper system performance depend on them.
1) Antenna system installation should only be performed by qualified technical personnel.
2) The following instructions for your safety describe antenna installation
guidelines based on FCC Maximum RF Exposure Compliance requirements.
3) The uplink antenna is usually mounted outside and exchanges signals
with the repeater base station or donor site. It is typically mounted permanently-attached to the building wall or roof. The gain of this antenna should
NOT exceed 10 dB. Only qualified personnel should have access to the
antenna and under normal operating conditions, no one should be able to
touch or approach it within 1 meter (40 inches).
4) The downlink or in-building signal distribution system is connected to the
downlink booster port using coaxial cable. The distribution system may
use radiating coaxial cable or a network 1/4 wave whip antennas whose
gain does not exceed 0 dB for any radiator. These antennas should be
installed so that the user cannot approach any closer than 0.2 meters (8
inches) from the antenna.
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 4
61-89A-50-A18-G1-UserMan page 5 of 20
Table of Contents
Specifications
General Description
Note About Output Power Rating
Installation
Cautionary Note
Pre-RF Connection Tests
Test Equipment
Antenna Isolation
Procedure for Measuring Antenna Isolation
Increasing Isolation
Input Signal Levels
Procedure for Measuring Input Signal Levels
Reduction of Incoming Signal Strength
Operation
Main Status Display Screen
Configuration Settings
Calibrate Currents
Set Gain
Set Output Level
Detailed Status Screens
Amplifiers
Power Supply
OLC
OLC Historical Info
Alarms
LED Indicators
Form-C Contacts
Performance Survey
Maintenance and Repair
10
10
10
13
13
13
13
14
14
14
14
14
14
14
14
14
14
14
15
15
17
illustrations & Tables
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
TX RX Systems Inc.
Front view of the Model 61-89A-50-A18-G1
Measuring Antenna Isolation
Measuring Input Signal Levels
Software flow chart
Boot-up display screen
Main status display screen
Measuring Signal Booster Gain
Surveying Performance
Manual 7-9352 (version 4)
11
12
13
13
15
16
01/27/04
Page 5
61-89A-50-A18-G1-UserMan page 6 of 20
Model 61-89A-50-A18-G1 Specifications
Ele ctr ical
Frequency Range:
806-869 MHz
FCC Identif ication Number:
EZZ5PI031202
Number of Passbands:
Passband Frequencies:
806-824 / 851-869 MHz
Minimum Passband Separation:
45 MHz
Pass Bandw idth:
18 MHz
Gain:
+80 dB
Guardband:
27 MHz
Output Level Control Range:
60 dB (less user programmed digital attenuation)
System Noise Figure at Maximum Gain:
3.5 dB maximum
Pow er Output 806-824 MHz ((total composite)
1.3 Watts
Pow er Output 851-869 MHz (total composite)
1.6 Watts
Third Order Output Intercept Point:
+55 dBm minimum, w ith no attenuation
Primary Supply V oltage:
100-240 V A C; 50-60 Hz
A utomatic Battery Backup Option:
+24 to +30 V DC
M e chanical
Height:
24"
Width:
24"
Depth:
8"
Weight
85 lbs.
Housing Type:
Painted Steel
Enclosure Type:
GENERAL DESCRIPTION
Signal boosters extend radio coverage into areas
where abrupt propagation losses prevent reliable
communication. This system receives an RF signal, raises its power level, and couples it to an
antenna or leaky (radiating) coaxial cable system
so that it can be re-radiated. No frequency translation (conversion) occurs with this device.
The two-way signal booster model 61-89A-50-A18G1 (shown in Figure 1) is a broadband, bidirectional dual branch (uplink and downlink) system
with an 18 MHz passband. The booster passes
uplink signals from 806 to 824 MHz and downlink
signals from 851 to 869 MHz. Linear RF active
amplifiers, filters, and DC power sources are used
to adequately boost and re-radiate the passband
signals.
The system is hardware configurable to operate at
one of two coarse gain levels including medium
(+60 dB gain max) or high (+80 dB gain max). The
coarse gain adjustments is made by physically
removing the low level amplifier card (part# 319575) from the branch. Without the low level card
in place the system gain will be +60 dB max. The
coarse gain of the uplink or downlink branch can be
TX RX Systems Inc.
NEMA 4 Standard
adjusted independently of each others. In addition,
for fine adjustment the gain of a branch can be
reduced up to 30 dB in 0.5 dB increments via software interface regardless of which coarse gain setting the branch is configured for.
The output level of any signal passing through a
signal booster is determined by the systems gain
specification. All signals passing through a properly operating signal booster are amplified by the
same amount but will come out at power levels that
are related to their respective input level by the
gain specification. Signal leveling is not an
intended function of a signal booster. Amplifier
stages used in this signal booster system may be
damaged by excessively strong input signal levels.
The system is equipped with Output Leveling Circuitry (OLC) to protect the amplifiers and reduce
spurious signals. It is interesting to note that the
total power for the multicarrier condition is always
less than the maximum single carrier rating. As the
number of carriers increases, the difference
between the single carrier maximum and the total
power of all carriers grows even greater.
Linear power amplifiers (Class-A or Class-AB operation) are used in this application in contrast to the
Manual 7-9352 (version 4)
01/27/04
Page 6
61-89A-50-A18-G1-UserMan page 7 of 20
Uplink
Low-Level
Amplifier
(remove for coarse
gain adjustment)
Uplink
Power
Distribution
Downlink
Low-Level
Amplifier
(remove for coarse
gain adjustment)
Downlink
Power
Distribution
Controller
Downlink
Mid-Level
Amplifier
Uplink
Mid-Level
Amplifier
Duplexer
Duplexer
Downlink
Power
Amplifier
Uplink
Power
Amplifier
Menu
Select
Buttons
AC Power
Switch
Power Supply
Battery
Backup
Switch
Downlink In
Uplink Out
Alarm Contact
Terminal Strip
Uplink Out
Downlink In
Connect
Backup
Battery
here
Figure 1: Front view of the model 61-89A-50-A18-G1 two-way signal booster system.
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 7
61-89A-50-A18-G1-UserMan page 8 of 20
highly efficient Class-C power amplifiers used in
the output stages of most FM land mobile transmitters. Linear amplifiers are biased for a relatively
high continuous DC current drain. Class-A amplifiers generally have the lowest efficiency of the various amplifier types, typically in the range of 25 33% and Class-AB amplifiers can reach 50% efficiency. Their biggest advantage is faithful reproduction of the input waveform which results in the
lowest levels of intermodulation distortion products
(IM) of all the classes of amplifiers. The generation
of IM distortion is a serious design consideration
when two or more channels are simultaneously
present in the same amplifier stage.
weight and size of the unit should it become
detached from its mounting surfaces for any reason.
Filtering is used at the input and output of the signal path to help suppress any IM products that may
be inadvertently generated. Signals that exceed
the maximum input rating may either damage the
signal booster or cause it to generate intermodulation products that exceed the maximum allowed by
the FCC or other regulatory agency.
Connection of RF to the unit is made via “N” female
connectors located on bottom of the cabinet.
These connectors are individually labeled “Downlink In / Uplink Out” and “Downlink Out / Uplink In”.
Care should be used when making connections to
these ports to insure the correct antenna cable is
connected to its corresponding input / output port
or the system will not work. The use of high quality
connectors with gold center pins is advised. Flexible jumper cables made of high quality coax are
also acceptable for connecting to rigid cable sections.
Note About Output Power Ratings
A single maximum output power rating does not
apply to broadband signal boosters because the
linear amplifiers used in them may have to process
multiple simultaneous signals. Under these conditions, the questions of power rating becomes more
complex.
When more than one signal is amplified, a number
of spurious signals will also appear in the amplified
output. They are referred to as intermodulation distortion products, more commonly called IM. These
spurious products would not be present in a perfectly linear amplifier but as in all things, something
short of perfection is realized. Accepted industry
practice is to use the Third Order Intercept Point
specification of a signal booster to predict the level
of IM products. The intercept point is derived from
the measurement of an amplifiers 1 dB compression point.
INSTALLATION
The layout of the signal distribution system will be
the prime factor in determining the mounting location of the signal booster enclosure. However,
safety and serviceability are also key considerations. The unit should be located where it cannot
be tampered with by unauthorized personnel yet is
easily accessible to service personnel using trouble shooting test equipment such as digital multimeters and spectrum analyzers. Also consider the
TX RX Systems Inc.
Very little is required to install this signal booster.
The unit should be bolted in its permanent position
using lag bolts or other suitable fasteners. Make
sure there is an unobstructed airflow over the
external heatsinks. Safety and serviceability are
key considerations. The signal booster cabinet will
stay warm during normal operation so in the interest of equipment longevity, avoid locations that will
expose the cabinet to direct sun or areas where the
temperature is continually elevated.
The signal booster is designed to be powered from
120 VAC and a conduit entry box is provided at the
bottom of the enclosure for bringing the AC line into
the cabinet. AC line connections should be made in
accordance with local electrical and building codes.
In addition, the unit is capable of being operated
from a backup DC power source between +24 and
+30 VDC. A terminal screw connector is available
inside the bottom of the cabinet for connecting the
backup voltage. In addition, there are also terminal
screw connections inside the cabinet for alarm
monitoring that are designed for connection to a
customer supplied supervisory alarm system, see
figure 1.
CAUTIONARY NOTE
The following cautions are not intended to frighten
the user but have been added to make you aware
of and help you to avoid the areas where experience has shown us that trouble can occur.
1) Just like the feedback squeal that can occur
when the microphone and speaker get too close
to each other in a public address system, a signal booster can start to self oscillate. This will
occur when the isolation between the input
Manual 7-9352 (version 4)
01/27/04
Page 8
61-89A-50-A18-G1-UserMan page 9 of 20
antenna or signal source and the output distribution system does not exceed the signal
boosters gain by at least 15 dB. This condition
will reduce the effectiveness of the system and
may possibly damage the power amplifier
stages.
2) The major cause of damage to signal boosters
is the application of input RF power levels in
excess of the maximum safe input. This can
happen inadvertently when connecting a signal
generator with full power out to one of the inputs
or by a very strong signal that is far stronger
than expected. Following the pre-RF connection
checks listed next will help to avoid these two
problems.
PRE-RF CONNECTION TESTS
Certain characteristics of the signal distribution
system should be measured before connecting it to
the signal booster. This step is necessary to insure
that no conditions exist that could possibly damage
the signal booster and should not be skipped for
even the most thoroughly designed system. Two
characteristics need to be measured; antenna isolation and input signal levels.
Test Equipment
The following equipment is required in order to perform the pre-installation measurements.
1) Signal generator for the frequencies of interest
capable of a 0 dBm output level. Modulation is
not necessary.
2) Spectrum analyzer that covers the frequencies
of interest and is capable of observing signal
levels down to -100 dBm.
3) Double shielded coaxial test cables made from
RG142 or RG55 coaxial cable.
Antenna Isolation
Antenna isolation is the signal path isolation
between the two sections of the signal distribution
system that are to be connected to the signal
boosters antenna ports. Lack of isolation between
the input and output antennas can cause the
amplifiers in the system to oscillate. This can hap-
EXTERNAL
ANTENNA
INTERNAL
SIGNAL DISTRIBUTION
SYSTEM
SPECTRUM
ANALYZER
SIGNAL
GENERATOR
ISOLATION (dB)
ZERO LOSS
REFERENCE
Figure 2: Typical test equipment setup for measuring antenna isolation.
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 9
61-89A-50-A18-G1-UserMan page 10 of 20
pen at a high enough level to damage the power
amplifier stages. In general, if one or both antenna
ports are connected to sections of radiating coaxial
EXAMPLE
Gain Reduction (dB) = Minimum Isolation (dB) Measured Isolation (dB)
If the measured isolation is -75dB and the minimum isolation is -80dB then the amount of gain
reduction required is: -80dB - (-75) = -5 dB
cable (lossy cable) the isolation will be more than
adequate because of the high coupling loss values
that are encountered with this type of cable. When
a network of antennas are used for the input and
output, this problem is much more likely. Isolation
values are relatively easy to measure with a spectrum analyzer and signal generator.
Procedure for Measuring Antenna Isolation
1) Set the signal generator for a 0 dBm output
level at the center frequency of one of the signal
boosters passbands.
2) Set the spectrum analyzer for the same center
frequency and a sweep width equal to or just
slightly greater than the passband chosen in
step one.
3) Connect the test leads of the signal generator
and the spectrum analyzer together using a
female barrel connector, see Figure 2. Observe
the signal on the analyzer and adjust the input
attenuator of the spectrum analyzer for a signal
level that just reaches the 0 dBm level at the top
of the graticule.
4) Referring to figure 2, connect the generator test
lead to one side of the signal distribution system
(external antenna) and the spectrum analyzer
lead to the other (internal distribution system)
and observe the signal level. The difference
between this observed level and 0 dBm is the
isolation between the sections. If the signal is
too weak to observe, the spectrum analyzer's
bandwidth may have to be narrowed and its
input attenuation reduced. Record the isolation
value. The isolation value measured should
exceed the signal boosters gain figure by at
least 15 dB.
TX RX Systems Inc.
It is wise to repeat the procedure listed above for
measuring antenna isolation, with the signal generator set to frequencies at the passbands edges in
order to see if the isolation is remaining relatively
constant over the complete width of the passband.
Increasing Isolation
If the measured isolation does not exceed the signal boosters gain figure by at least 15 dB then
modification of the signal distribution system is
required. Alternately, the gain of the signal booster
can also be reduced to insure the 15 dB specification is met. If the isolation cannot be increased
then the amount of gain reduction required is determined as shown in the following example.
Input Signal Levels
Excessive input signal levels can damage the signal booster. Although this problem is less severe in
OLC protected systems, strong signals may cause
sudden reductions in gain and an associated
decrease in the desired output signal strength.
Even in the most carefully designed signal distribution systems, unpredictable situations can arise
that can cause this trouble. A few of the more common causes are:
a) Unintended signals entering the system. Primarily caused by radios operating on channels that
are within the operational bandwidth of the signal booster. Sometimes this will be a transient
problem caused by mobile units when they
transmit while in close proximity to your system.
b) Hand-held and mobile units that approach
much closer than expected to one of the antennas in the signal distribution system.
c) Unexpected signal propagation anomalies.
Building geometry can cause signal ducting and
other phenomena that cause signal levels that
are much stronger (or lower) than expected.
d) Lower than estimated signal attenuation causes
signals to be unusually strong. Higher losses
can also occur giving weaker signals than
desired.
e) Signal booster model with excessive gain. In
systems that have an existing signal booster, it
is sometimes assumed that an identical unit
should be installed when expanding the system
Manual 7-9352 (version 4)
01/27/04
Page 10
61-89A-50-A18-G1-UserMan page 11 of 20
S IG N A L D IS T R IB U T IO N
S p e c tru m
S Y S T E M
A n a ly z e r
R a d io 2
R a d io 1
Figure 3: Typical test equipment setup for measuring input signal levels.
to provide extended coverage. In most cases, a
signal booster with far less gain than the first is
required.
4) Connect the analyzer to the section of the signal distribution system that is going to serve as
the input (see Figure 3).
f) Improper installation or application of signal
splitters or directional couplers in the signal distribution system. This is usually the cause of too
low a signal level but deserves mentioning here.
Signal splitting needs to be done with constant
impedance signal splitters so that the proper
power splitting ratios and VSWR are maintained. Using tee connectors by themselves is
inviting trouble. Directional couplers must be
connected with regard to their directionality and
coupling levels or improper system signal levels
may result.
5) Record the power level (in dBm) of all carriers in
the passband frequency range that are significantly greater than the noise floor displayed on
the analyzer.
Procedure for Measuring Input Signal Levels
1) Set a spectrum analyzer for the center frequency of one of the signal boosters passbands.
2) Set the analyzers sweep width so that the entire
passband frequency range can be observed.
3) The analyzers input attenuator should be set in
order to observe input signal levels from
approximately -80 dBm to 0 dBm.
TX RX Systems Inc.
6) To find the total power being applied the calculations listed below must be performed. The
conversion chart at the rear of the manual can
be used. Here are the steps:
a) Convert all values in dBm to Watts
b) Total the power for all carriers in Watts
c) Convert the total power in Watts to dBm
Example: suppose we have a signal
booster with a maximum gain of 70
dB. After checking the input signal
levels, it was determined that there
are three signals that are significantly greater than the noise floor displayed on the
analyzer. These signals have strengths of -45
dBm, -43 dBm and -41 dBm.
First we use the conversion chart at the end of this
manual to convert the power levels in dBm to watts
Manual 7-9352 (version 4)
01/27/04
Page 11
61-89A-50-A18-G1-UserMan page 12 of 20
NOTE
If no button is pressed within
2 minutes, system returns to
Main Status Display Screen
KEY
LOW
MID
PA
## MA ## MA ## MA
## MA ## MA ## MA
E Press ENTER key
Press Item Select arrow key
Status OK
NOTE
Pressing CANCEL always returns
you to the previous menu without
saving changes
Detailed Status
Calibrate Currents
Uplink Low Level Amp
Set Gain
Uplink Mid Level Amp
Configuration
Set Output Level
Restore Orig Config
Uplink Power Amp
Downlink Low Amp
Downlink Mid Amp
Downlink Power Amp
Are you sure
you want to restore
the Factory Presets?
Yes No
Power Supply
Current OLC Status
OLC Historical Info
Set Output Levels
Uplink
## dBm
Downlink
## dBm
OLC Historical Info
Done
UL
Avg
# dB
#%
Day
# dB
#%
Save Changes?
Yes No
Current OLC Status
Set Desired Gain
Uplink
## dB
Uplink
# dB
#%
Downlink
# dB
#%
Downlink
## dB
Done
Power Supply Status
24v ### 12v ###
Press Enter to
Calibrate Currents
Calibrating . . .
Done Calibrating
Press Enter to Save
Name of Amp
Current # Temp #
Amp Is/Not
Bypassed/Connected
NOTE
This menu screen will also give you
the option to place an amplifier into
Bypass or take one out of Bypass.
Figure 4: Software flow chart.
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 12
61-89A-50-A18-G1-UserMan page 13 of 20
so that we can add them together. The power in
watts is written in scientific notation but the chart
a) The addition of extra filtering. Consult TX RX
System's sales engineers for help in this
respect.
b) Modification of the signal distribution layout by
changing the type or location of pickup antennas. This has to be approached in an empirical
way, that is, change-and-try until you get the
desired results. Sometimes changing from omni
to directional antennas will correct the problem.
Figure 5: Software version is displayed briefly during
the boot-up sequence.
uses computer notation. For example, in the chart,
an exponent may be written as E-08. In conventional mathematical notation E-08 is written 10-8.
The total power must be written as a number
between 0 and 10 to use the chart. Look up
1.611E-7 in the Watts column. This number falls
between -38 and -37 dBm so we chose -37
because it is the next higher value.
Figure 6: Main Status Display Screen.
Power (dBm)
Power (watts)
-45 dBm
3.16 x 10-8
-43 dBm
5.01 x 10-8
-41 dBm
7.94 x 10-8
TOTAL
16.11 x 10-8
Reduction of Incoming Signal Strength
Reducing the strength of offending signals may
require some or all of the following steps:
TX RX Systems Inc.
OPERATION
Power is applied to the signal booster by turning on
the AC power switch located on the junction box
inside the cabinet, refer to figure1. This will turn on
the power supply assembly and the LED indicator
on the power supply should come on indicating the
assembly is functioning normally.
The model 61-89A-50-A18-G1 signal booster system is software controlled. Interface to the system
is done through the LCD display screen and the
menu select buttons located on the display panel,
see figure 1. A flow chart showing all of the possible user menu selections is shown in Figure 4.
Each menu selection will be discussed in detail
below. Upon power up the system will begin to
cycle through its normal boot-up sequence during
which time the LCD display will briefly show the
current software version, see Figure 5.
Main Status Display Screen
Once the boot-up sequence is completed (after
several seconds) the LCD display will switch to the
main status display screen as shown in Figure 6.
This is the normal display screen for the signal
booster. The system will return to this screen from
any other screen if no menu interface buttons are
pressed within 2 minutes.
The main status display screen shows the current
draw of all 6 amplifiers in the system. First the
uplink amplifiers, power (PA), mid-level (MID), and
low-level (LOW) then the three downlink amplifiers.
The current value will flash on and off for any
amplifier in error. The last line of the main display
screen gives a summary status message for the
entire signal booster. In this example “Status Okay”
is being displayed. Pressing the “ENTER” button
will move you from the main status display screen
into the menu selections and will permit interaction
with the system. There are two main functions
available within the software menus including configuration settings and detailed status displays.
Manual 7-9352 (version 4)
01/27/04
Page 13
61-89A-50-A18-G1-UserMan page 14 of 20
Configuration Settings
These items allow system configuration changes to
be made. The final selection in this group “Restore
Orig Config” will restore all configurable settings to
their original factory default values. Each configurable item is discussed below in detail.
CALIBRATE CURRENTS
Selecting this function automatically calibrates the
current alarm “trip” point of each amplifier in the
system. Due to manufacturing tolerances there are
small differences in current draw between amplifier
assemblies. This software function matches the
alarm sensing circuit to the respective amplifier
assembly and should be repeated whenever an
amplifier assembly is replaced for maintenance
purposes.
SET GAIN
This function allows the user to electronically
reduce the gain of the booster up to 30 dB in increments of 0.5 dB. Gain can be adjusted independently for both the uplink and downlink channels.
SET OUTPUT LEVEL
Allows the output levels for the uplink and downlink
channels to be independently adjusted in 1 dB
increments up to +30 dBm. Note that the OLC circuitry will make every effort to maintain the systems output level at the values you have selected in
this menu.
Detailed Status Screens
These items allow a detailed examination of system components including; all amplifiers, the power
supply, and the OLC function. Each item is discussed below in detail.
AMPLIFIERS
A separate status screen is available for each
amplifier in the system. When an amplifier is
selected this function will display the present current draw of that amp as well as its present operating temperature in degrees Celsius. In addition, a
status message will indicate if the amplifier is connected and whether the amplifier is bypassed or
not bypassed. This menu selection also provides
the option of placing an amplifier in bypass or taking an amplifier out of bypass.
POWER SUPPLY
This function displays the real time power supply
voltages for both 24 volt and 12 volt supplies.
TX RX Systems Inc.
OLC
This screen shows the amount of attenuation presently being used by the OLC for both the uplink and
downlink channels. In addition, the percentage of
OLC presently being used is also shown.
NOTE
The amount of OLC currently being
used in either the uplink or downlink
channels is also indicated by LED bar
graph displays located on the display
panel.
OLC HISTORICAL INFO
This screen displays the OLC historical data over
the past 100 days for both uplink and downlink. The
average OLC attenuation used when the OLC was
active is given both for individual days and over the
entire past 100 days. The percentage of time the
OLC was active is also given for both individual
days and over the past 100 days. This archived
information will permit the creation of a user signal
profile to facilitate optimum system configuration
and performance.
Alarms
The system continuously monitors the current draw
and operating temperature of each amplifier as well
as the voltage level of the +12 and +24 VDC supplies. If any of these parameters exceed normal
operating levels by a factory preset percentage the
system enters an alarm condition. Notification of an
alarm condition is provided by LED indicators and
Form-C contacts available via the alarm terminal
screws.
LED INDICATORS
There are LED indicators for each amplifier in the
system as well as the +12 and +24 VDC power
supply voltages. The LED indicators for the low and
mid level amplifiers are located on the individual
plug-in module. These are tri-color LED’s with
green representing NORMAL operation, orange
representing a WARNING condition, and red indicating a FAULT condition. A warning condition
occurs when the current draw of the amplifier
exceeds nominal by +/- 20%. Fault conditions
occur when the current draw exceeds +/- 30% or
the amplifiers operating temperature exceeds 80°
Celsius.
The LED indicators for the power amplifiers are
located on the assembly next to the RF input connector and are dual color LED’s. Green represents
NORMAL operation while red indicates a FAULT
Manual 7-9352 (version 4)
01/27/04
Page 14
61-89A-50-A18-G1-UserMan page 15 of 20
Spectrum
Analyzer
Signal
Generator
Gain
10 dB Pad
Test Port
Test Port
Zero
Reference
Figure 7: Test equipment interconnection for measuring signal booster gain.
condition. Fault conditions occur when the current
draw exceeds +/- 30% or the amplifiers operating
temperature exceeds 80° Celsius. The power
amplifiers do not have a warning state.
The power supply LED indicators are located on
display panel next to the menu selection buttons
and are also dual color. Green representing normal
operation and red a fault condition. A fault condition
for the +24 VDC supply occurs whenever the voltage potential drops below +16 VDC (30% below
nominal). Likewise, a fault for the +12 VDC supply
occurs when the potential is below +8 VDC (30%
below nominal).
FORM-C CONTACTS
Form-C contacts are available inside the cabinet
next to the power supply assembly, see figure1.
These screw terminals are intended for connection
to the customers supervisory alarm or data acquisition system. One set of terminals is notification of
any alarm condition occurring and the second set
TX RX Systems Inc.
of contacts indicate the system is operating on battery backup power.
PERFORMANCE SURVEY
It is a good idea to document the performance of
the system after installation so that a reference
exists for future comparisons. This information can
make troubleshooting an interference problem or
investigation of a complaint about system performance much easier. If there are coverage problems with a system, this survey will usually reveal
them allowing corrective measures to be taken
before the system is put into routine use. The following is an outline of how to do such a survey.
Because the nature of each installation can be
quite different, only a broad outline is given.
1) Measure the gain of the signal booster being
careful not to exceed the maximum input level.
Figure 7 shows this being done using a signal
generator and spectrum analyzer. This is basically a substitution measurement. Record the
measured values for each passband.
Manual 7-9352 (version 4)
01/27/04
Page 15
61-89A-50-A18-G1-UserMan page 16 of 20
2) The signal booster is equipped with a -30 dB
signal sampler port following the final output
amp (part of the Duplexer assembly). This port
is for the connection of test equipment such as
a spectrum analyzer and will allow the observation of the amplifier output at a considerably
reduced output level. This decoupling figure
needs to be added to a measured signal value
in order to arrive at the actual signal level.
3) With a spectrum analyzer connected to the signal sampler port (see Figure 8), have personnel with handheld radios move to several
predetermined points and key their radios.
Record the level of these signals as observed
on the analyzer and also record the location of
the person transmitting. In this way, a map of
the systems performance can be generated.
Spectrum
Analyzer
Signal Distribution System
Boosted
RF Signal
10 dB Pad
Test Port
Figure 8: Test equipment interconnection for surveying performance.
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 16
61-89A-50-A18-G1-UserMan page 17 of 20
4) For signals coming from a fixed antenna or station, record the level of all the desired incoming
signals for future reference.
MAINTENANCE AND REPAIR
Signal boosters manufactured by TX RX Systems,
Inc. can function reliably for 10 or more years with
little or no maintenance. However, if the amplifiers
are subjected to excessively high signal levels,
power surges or lightning strikes, failures may
occur. The following procedures may be followed
for detecting a malfunctioning unit or as part of a
periodic maintenance program.
1) The heatsink area should be cleared of dust
and debris.
2) Inspect the unit to see that the power supply
LED DC indicator is lit (remove any dust or
debris that may obscure the LED). This will verify that DC power is flowing properly. Check all
hardware for tightness.
3) Compare system performance to initial performance levels measured when the system was
first installed. The lack of signal can be traced to
a malfunctioning amplifier by progressive signal
monitoring from the output (far end) to the input
end of the system noting the area where the
signal returns to normal level. The next amplifier
toward the output end of the system will probably be the one that failed.
or
Measure the gain at any convenient frequency
in the working frequency band to verify that the
gain specification is being met. If the gain values fall below that specified for the model check
the following:
A) Open the signal booster cabinet and inspect for
any loose or broken connections or cables, and
repair as necessary.
B) Measure the output of the power supply to see
that the proper operating voltage is being maintained.
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 17
61-89A-50-A18-G1-UserMan page 18 of 20
Power Conversion Chart
dBm to dBw : Watts : Microvolts
dBm
dBw
Watts
Volts (50Ω)
dBm
dBw
Watts
Volts (50Ω)
80
50
100000
2236.07
40
10
10
22.36
79
49
79432.82
1992.9
39
7.94
19.93
78
48
63095.74
1776.17
38
6.31
17.76
77
47
50118.72
1583.01
37
5.01
15.83
76
46
39810.72
1410.86
36
3.98
14.11
75
45
31622.78
1257.43
35
3.16
12.57
74
44
25118.86
1120.69
34
2.51
11.21
73
43
19952.62
998.81
33
9.99
72
42
15848.93
890.19
32
1.59
8.9
71
41
12589.25
793.39
31
1.26
7.93
70
40
10000
707.11
30
7.07
69
39
7943.28
630.21
29
-1
0.79
6.3
68
38
6309.57
561.67
28
-2
0.63
5.62
67
37
5011.87
500.59
27
-3
0.5
5.01
66
36
3981.07
446.15
26
-4
0.4
4.46
65
35
3162.28
397.64
25
-5
0.32
3.98
64
34
2511.89
354.39
24
-6
0.25
3.54
63
33
1995.26
315.85
23
-7
0.2
3.16
62
32
1584.89
281.5
22
-8
0.16
2.82
61
31
1258.93
250.89
21
-9
0.13
2.51
60
30
1000
223.61
20
-10
0.1
2.24
59
29
794.33
199.29
19
-11
0.08
1.99
58
28
630.96
177.62
18
-12
0.06
1.78
57
27
501.19
158.3
17
-13
0.05
1.58
56
26
398.11
141.09
16
-14
0.04
1.41
55
25
316.23
125.74
15
-15
0.03
1.26
54
24
251.19
112.07
14
-16
0.03
1.12
53
23
199.53
99.88
13
-17
0.02
52
22
158.49
89.02
12
-18
0.02
0.89
51
21
125.89
79.34
11
-19
0.01
0.79
50
20
100
70.71
10
-20
0.01
0.71
49
19
79.43
63.02
-21
0.01
0.63
48
18
63.1
56.17
-22
0.01
0.56
47
17
50.12
50.06
-23
0.01
0.5
46
16
39.81
44.62
-24
0.45
45
15
31.62
39.76
-25
0.4
44
14
25.12
35.44
-26
0.35
43
13
19.95
31.59
-27
0.32
42
12
15.85
28.15
-28
0.28
41
11
12.59
25.09
-29
0.25
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 18
61-89A-50-A18-G1-UserMan page 19 of 20
Power Conversion Chart
dBm to dBw : Watts : Microvolts
dBm
dBw
Watts
uVolts (50Ω)
dBm
dBw
Watts
uVolts (50Ω)
-30
1.0000E-03
223606.8
-40
-70
1.0000E-07
2236.07
-1
-31
7.9433E-04
199289.77
-41
-71
7.9433E-08
1992.9
-2
-32
6.3096E-04
177617.19
-42
-72
6.3096E-08
1776.17
-3
-33
5.0119E-04
158301.49
-43
-73
5.0119E-08
1583.02
-4
-34
3.9811E-04
141086.35
-44
-74
3.9811E-08
1410.86
-5
-35
3.1623E-04
125743.34
-45
-75
3.1623E-08
1257.43
-6
-36
2.5119E-04
112068.87
-46
-76
2.5119E-08
1120.69
-7
-37
1.9953E-04
99881.49
-47
-77
1.9953E-08
998.82
-8
-38
1.5849E-04
89019.47
-48
-78
1.5849E-08
890.2
-9
-39
1.2589E-04
79338.69
-49
-79
1.2589E-08
793.39
-10
-40
1.0000E-04
70710.68
-50
-80
1.0000E-08
707.11
-11
-41
7.9433E-05
63020.96
-51
-81
7.9433E-09
630.21
-12
-42
6.3096E-05
56167.49
-52
-82
6.3096E-09
561.68
-13
-43
5.0119E-05
50059.33
-53
-83
5.0119E-09
500.59
-14
-44
3.9811E-05
44615.42
-54
-84
3.9811E-09
446.15
-15
-45
3.1623E-05
39763.54
-55
-85
3.1623E-09
397.64
-16
-46
2.5119E-05
35439.29
-56
-86
2.5119E-09
354.39
-17
-47
1.9953E-05
31585.3
-57
-87
1.9953E-09
315.85
-18
-48
1.5849E-05
28150.43
-58
-88
1.5849E-09
281.5
-19
-49
1.2589E-05
25089.1
-59
-89
1.2589E-09
250.89
-20
-50
1.0000E-05
22360.68
-60
-90
1.0000E-09
223.61
-21
-51
7.9433E-06
19928.98
-61
-91
7.9433E-10
199.29
-22
-52
6.3096E-06
17761.72
-62
-92
6.3096E-10
177.62
-23
-53
5.0119E-06
15830.15
-63
-93
5.0119E-10
158.3
-24
-54
3.9811E-06
14108.64
-64
-94
3.9811E-10
141.09
-25
-55
3.1623E-06
12574.33
-65
-95
3.1623E-10
125.74
-26
-56
2.5119E-06
11206.89
-66
-96
2.5119E-10
112.07
-27
-57
1.9953E-06
9988.15
-67
-97
1.9953E-10
99.88
-28
-58
1.5849E-06
8901.95
-68
-98
1.5849E-10
89.02
-29
-59
1.2589E-06
7933.87
-69
-99
1.2589E-10
79.34
-30
-60
1.0000E-06
7071.07
-70
-100
1.0000E-10
70.71
-31
-61
7.9433E-07
6302.1
-71
-101
7.9433E-11
63.02
-32
-62
6.3096E-07
5616.75
-72
-102
6.3096E-11
56.17
-33
-63
5.0119E-07
5005.93
-73
-103
5.0119E-11
50.06
-34
-64
3.9811E-07
4461.54
-74
-104
3.9811E-11
44.62
-35
-65
3.1623E-07
3976.35
-75
-105
3.1623E-11
39.76
-36
-66
2.5119E-07
3543.93
-76
-106
2.5119E-11
35.44
-37
-67
1.9953E-07
3158.53
-77
-107
1.9953E-11
31.59
-38
-68
1.5849E-07
2815.04
-78
-108
1.5849E-11
28.15
-39
-69
1.2589E-07
2508.91
-79
-109
1.2589E-11
25.09
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 19
61-89A-50-A18-G1-UserMan page 20 of 20
Power Conversion Chart
dBm to dBw : Watts : Microvolts
dBm
dBw
Watts
uVolts (50Ω)
dBm
-80
-110
1.0000E-11
22.36
-120
-81
-111
7.9433E-12
19.93
-121
-82
-112
6.3096E-12
17.76
-122
-83
-113
5.0119E-12
15.83
-84
-114
3.9811E-12
-85
-115
-86
-116
-87
dBw
Watts
uVolts (50Ω)
-150
1.0000E-15
0.22
-151
7.9433E-16
0.2
-152
6.3096E-16
0.18
-123
-153
5.0119E-16
0.16
14.11
-124
-154
3.9811E-16
0.14
3.1623E-12
12.57
-125
-155
3.1623E-16
0.13
2.5119E-12
11.21
-126
-156
2.5119E-16
0.11
-117
1.9953E-12
9.99
-127
-157
1.9953E-16
0.1
-88
-118
1.5849E-12
8.9
-128
-158
1.5849E-16
0.09
-89
-119
1.2589E-12
7.93
-129
-159
1.2589E-16
0.08
-90
-120
1.0000E-12
7.07
-130
-160
1.0000E-16
0.07
-91
-121
7.9433E-13
6.3
-131
-161
7.9433E-17
0.06
-92
-122
6.3096E-13
5.62
-132
-162
6.3096E-17
0.06
-93
-123
5.0119E-13
5.01
-133
-163
5.0119E-17
0.05
-94
-124
3.9811E-13
4.46
-134
-164
3.9811E-17
0.05
-95
-125
3.1623E-13
3.98
-135
-165
3.1623E-17
0.04
-96
-126
2.5119E-13
3.54
-136
-166
2.5119E-17
0.04
-97
-127
1.9953E-13
3.16
-137
-167
1.9953E-17
0.03
-98
-128
1.5849E-13
2.82
-138
-168
1.5849E-17
0.03
-99
-129
1.2589E-13
2.51
-139
-169
1.2589E-17
0.03
-100
-130
1.0000E-13
2.24
-140
-170
1.0000E-17
0.02
-101
-131
7.9433E-14
1.99
-141
-171
7.9433E-18
0.02
-102
-132
6.3096E-14
1.78
-142
-172
6.3096E-18
0.02
-103
-133
5.0119E-14
1.58
-143
-173
5.0119E-18
0.02
-104
-134
3.9811E-14
1.41
-144
-174
3.9811E-18
0.01
-105
-135
3.1623E-14
1.26
-145
-175
3.1623E-18
0.01
-106
-136
2.5119E-14
1.12
-146
-176
2.5119E-18
0.01
-107
-137
1.9953E-14
-147
-177
1.9953E-18
0.01
-108
-138
1.5849E-14
0.89
-148
-178
1.5849E-18
0.01
-109
-139
1.2589E-14
0.79
-149
-179
1.2589E-18
0.01
-110
-140
1.0000E-14
0.71
-150
-180
1.0000E-18
0.01
-111
-141
7.9433E-15
0.63
-112
-142
6.3096E-15
0.56
-113
-143
5.0119E-15
0.5
-114
-144
3.9811E-15
0.45
-115
-145
3.1623E-15
0.4
-116
-146
2.5119E-15
0.35
-117
-147
1.9953E-15
0.32
-118
-148
1.5849E-15
0.28
-119
-149
1.2589E-15
0.25
TX RX Systems Inc.
Manual 7-9352 (version 4)
01/27/04
Page 20

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : No
Create Date                     : 2004:01:27 12:05:26
Producer                        : Acrobat Distiller 4.05 for Windows
Author                          : dennish
Creator                         : HP_CLJ85.DRV Version 4.20
Title                           : 61-89A-50-A18-G1-UserManV3.fm
Modify Date                     : 2004:01:27 12:05:29-05:00
Page Count                      : 20

EXIF Metadata provided by EXIF.tools